Tan Pham - DevOps Engineer in the DevOps Team

Q: Where is Tan based?

Tan is based in Hanau, Germany .

Q: What languages does Tan speak?

Tan speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Tan have?

Tan has at least 34 years of experience. During this time, Tan has worked in at least 34 different roles and for 34 different companies . The average length of individual experience is 1 year and 10 months . Note that Tan may not have shared all experience and actually has more experience.

Q: What is Tan's latest experience?

Tan's most recent position is DevOps Engineer in the DevOps Team at Rise-World .

Q: What companies has Tan worked for in recent years?

In recent years, Tan has worked for Rise-World , BAMF , Bundesdruckerei , IBB/DKB Bank , and Hornbach .

Q: Which industries is Tan most experienced in?

Tan is most experienced in industries like Banking and Finance , Information Technology (IT) , and Telecommunication . Tan also has some experience in Government and Public Administration , Transportation and Logistics , and Retail .

Q: Which business areas is Tan most experienced in?

Tan is most experienced in business areas like Information Technology (IT) , Operations , and Project Management . Tan also has some experience in Quality Assurance (QA) , Business Intelligence , and Customer Service .

Q: Which industries has Tan worked in recently?

Tan has recently worked in industries like Information Technology (IT) , Government and Public Administration , and Banking and Finance .

Q: Which business areas has Tan worked in recently?

Tan has recently worked in business areas like Information Technology (IT) , Operations , and Business Intelligence .

Recommended expert

Hanau, Germany

Experience

Jan 2023 - Mar 2025

2 years 3 months

Vienna, Austria

DevOps Engineer in the DevOps Team

Rise-World

Implementation of specified DevOps solutions to automate infrastructure (Terraform, Bicep, CloudFormation, Ansible) on-premises datacenter (Ovirt, Proxmox, Ceph Cluster, MinIO) and private cloud.
Administration, configuration and implementation of CI/CD DevOps pipelines (GitLab, GitFlow) to support development process (Artifactory, Prometheus, Istio, service mesh, Helm Chart, OpenShift (Red Hat Enterprise) / Kubernetes cluster), Red Hat Satellite.
Administration, setup, monitoring and patching of Linux infrastructure based on Red Hat Enterprise for Dev, Test and QA.
Use of Scrum and Kanban methods.
Administration, configuration and implementation of security standards for deploying on Dev, Test, QA and Prod stages of the new ePA applications.
Development of new plugins and add-ons needed on current infrastructure.
Database support.
Data analytics support (Python, Spark, Pandas, Power BI, Splunk Enterprise).
Implementation of best practices for DevSecOps and BizDevOps using GitOps (ArgoCD), Streamlit framework, Semaphore Ansible UI.
Configuration and testing of iperf, uperf, sysbench using benchmark-operator for external source data and IoT/MDM devices, creating reports via ELK / OpenSearch.
Building a new Databricks platform to collect and analyze big data from different sources and IoT devices into Hadoop framework (Python, Pandas, PySpark, Power BI, Apache Airflow).
Building backend data aggregation and processing to automate configuration deployment between different OpenShift clusters and big data framework (Python, Pandas, PySpark, Apache Spark, PostgreSQL, Django 2, Ansible Automation, Jira JSM).
Building a new ML pipeline platform using Kubeflow, TensorFlow, KServe.
Data extraction, transformation and loading from different data sources including structured and unstructured data to analytic DWH / big data cluster using Python, Pandas, Polars, Power BI, Django backend and PostgreSQL.
Setup of new DevOps Test and QA HashiCorp Vault cluster for PKI and IAM.
Configuration and testing of automated patching based on CVSS score, SIEM-integrated CVEs.
Use of Nexpose and InsightVM to scan vulnerability events in network, host, container and application.
Design and implementation of secure and scalable AWS architectures including VPC, EC2, S3, RDS and Route53 and similar setups on Azure and GCP.
Automated system provisioning and deployment using CloudFormation templates.
Configuration of IAM roles, policies and permissions to ensure secure access control.
Patch management, backup automation and disaster recovery setup on AWS infrastructure.
Monitoring and optimization of system performance using AWS CloudWatch and AWS Trusted Advisor.
Support of VMware services (vSphere, Aria, Horizon) and the virtual desktop environment.
Development and maintenance of CI/CD pipelines using Jenkins, GitLab CI/CD and AWS CodePipeline with interface to Nutanix.
Configuration of AWS CloudWatch to monitor application performance and system events.
Planning and execution of migration of on-premises applications to AWS cloud platforms.
Deployment of containerized applications using Docker and Kubernetes in AWS environments.
Deployment of internal software packages between availability zones using AWS CodeDeploy.
Building and deploying ML models using Scikit-learn, XGBoost and Spark MLlib including hyperparameter tuning, model evaluation and production deployment.

Jun 2022 - Dec 2022

7 months

Nuremberg, Germany

DevOps Engineer in the ELISA Team

BAMF

Implementation of CI/CD pipeline for building Spring Boot FE microservices components (elisa-ui-xx, kafka-ui), testing and deployment on OpenShift cluster.
Implementation of CI/CD pipeline for building Spring Boot BE microservices components (elisa-xx, kafka-xx, mongodb-xx, oracle-xx), testing and deployment on Kubernetes/OpenShift cluster.
Administration, configuration and implementation of CI/CD DevOps tools to support development process (Jenkins, Artifactory, Spring Boot, Prometheus, Istio, service mesh, Helm Chart, OpenShift and Kubernetes), Red Hat Satellite, Nagios, Check_MK.
Use of Scrum and Kanban methods.
Administration, configuration and implementation of security standards for deploying on Dev, Test, QA and Prod stages.
Design and implementation of cybersecurity concepts and best practices using SIEM/SOAR, Microsoft Sentinel, NIST, EDR/NDR, OpenVAS, CIS Benchmark, OpenSCAP, OWASP, Splunk SOAR, Elastic Security, PCI DSS and hardening of IT infrastructure.
Tool development on demand (Python, Ruby, Golang, npm, shell, SQL, JavaScript, TypeScript, Angular, Oracle, MongoDB, Apache Kafka, Node.js, Kafka UI).
Use of DevOps tools framework (Jenkins, GitFlow, Bitbucket, Artifactory, Jira, Confluence, VS Code, IntelliJ, Istio, Prometheus, Grafana, Terraform, Ansible Automation Platform, Ansible Tower, AWX).

Jan 2022 - Mar 2022

3 months

Berlin, Germany

DevOps Engineer in the DevOps BKMS Team

Bundesdruckerei

Analysis and code review of CI/CD pipeline implementations and testing in the Bekanntmachung team (Scrum, sprint standard).
Administration, configuration and implementation of CI/CD deployment on Bundesdruckerei Kubernetes cluster (Rancher, Helm, Spring Boot, Docker, Jira, Elasticsearch, Grafana, Prometheus, Confluence, GitLab, Kubernetes cluster, Terraform, Ansible).

Nov 2021 - Jul 2022

9 months

Berlin, Germany

Application Manager and DevOps in the Treasury Engineer Team

IBB/DKB Bank

Administration, configuration and deployment of the Treasury Kondor+ system and its interfaces.
Development, configuration and testing of batch processing, import and export of end-of-day data, interfaces to feed server and different banking middleware components.
Disaster recovery support.

Aug 2021 - Apr 2022

9 months

Landau, Germany

DevOps Engineer in the DevOps Team

Hornbach

Implementation of shared library for CI/CD pipeline to send annotations to endpoints (Microsoft Teams, ArgoCD, Jira, Grafana, Dynatrace, OpenStack, Proxmox VE, Datadog, Ceph Cluster).
Analysis and implementation of pod validation of Kubernetes clusters using Sonobuoy open source.
Implementation of pipeline as code (Jenkins in YAML, Terraform).
Implementation and testing of Ansible configuration deployment on AWX.
Creation and migration of existing Ansible roles to Ansible Collections.
Implementation of ansible-navigator.
Development of DevOps tools for data security processing using Golang.
Development of DevOps tools for REST API communication interfaces using Golang.
Design and implementation of scalable cloud solutions on Azure including multi-region deployments and disaster recovery strategies.
Automation of deployment processes by integrating Azure DevOps pipelines, reducing release cycles.
Management of containerized workloads on AKS ensuring high availability and security compliance.
Work on machine learning projects leveraging Azure AI and ML tools to improve operational efficiency and business decision-making.
Design and implementation of secure and scalable AWS architectures including VPC, EC2, S3, RDS and Route53.
Automated system provisioning and deployment using CloudFormation templates.
Configuration of IAM roles, policies and permissions to ensure secure access control.
Patch management, backup automation and disaster recovery configurations on AWS infrastructure.
Monitoring and optimization of system performance using AWS CloudWatch and AWS Trusted Advisor.
Development and maintenance of CI/CD pipelines using Jenkins, GitLab CI/CD and AWS CodePipeline.
Configuration of AWS CloudWatch to monitor application performance and system events.
Planning and execution of migration of on-premises applications to AWS cloud platforms.
Deployment of containerized applications using Docker and Kubernetes in AWS environments.
Deployment of internal software packages between availability zones using AWS CodeDeploy.

Jun 2021 - Dec 2021

7 months

Berlin, Germany

DevOps Engineer in the Identity Solution Team

Bundesdruckerei

Analysis, code review, implementation of CI/CD pipelines and testing of Hyperledger open source tools (Besu, Fabric) to support blockchain infrastructure.
Analysis and implementation of CI/CD pipelines to deploy Hyperledger tools to different blockchain infrastructures using IPFS.

Mar 2021 - Nov 2021

9 months

Hamburg, Germany

DevOps Engineer in the Bitmarck Technik GmbH

Bitmarck

Concept, planning and migration of application services of IKK customers from private cloud on-premises in Ludwigsburg to Bitmarck data center in Hamburg.
Optimization of release processes.
Optimization of deployment processes.
Concept and planning to prepare microservice architecture using DevOps best practices (DevOps tools, Jenkins, JBoss, DB2, OpenShift, Docker, vSphere, GitLab, GitFlow, OpenStack, CI/CD pipelines, Terraform, Bicep, Ansible) and resource planning (Crossplane, Pulumi).
Design and deployment of scalable Azure-based solutions managing over 50 virtual machines and related resources.
Automation of infrastructure provisioning using Terraform, Ansible and Azure Resource Manager (ARM) templates.
Establishment of CI/CD pipelines with Azure DevOps to streamline deployments.
Migration of on-premises applications to Azure.

Mar 2020 - Jan 2021

11 months

Frankfurt, Germany

DevOps Engineer in the IT 8 Enterprise Software Development

BaFin

Design of CI process concepts (Jenkins, Maven, Ant, Gradle, Bitbucket, SVN, Artifactory, Docker/Podman, OpenShift and on-premises Kubernetes) for snapshot and release builds.
Design of IAM concepts for CD process (continuous delivery and continuous deployment) across different stages.
Development, testing and operation of DSL CI/CD pipeline jobs with Selenium and code analytics (SonarQube).
Design of configuration automation concepts (Ansible and Ansible Tower) for dynamic setup of DevOps tool components.
Execution of various proofs of concept to demonstrate best practice implementations.
Design and implementation with infrastructure as code to set up staging environments (Terraform, Linux, IBM Red Hat, Ansible, Ansible Tower) and DevOps environment (Jenkins, Ansible Tower, AWX, Bitbucket, Artifactory, VMware VMs).
Redesign and implementation of enterprise internet and intranet applications to microservices architecture and deployment process using Docker, Podman, Kubernetes, Helm, OpenShift cluster, Artifactory, WebSphere and WebSphere Liberty.
Deployment of web service configuration using Python Fabric.
Customization of static data to data science systems and processing to big data (PySpark, Pandas, Power BI).
Documentation using Atlassian Confluence and presentations.
Proof-of-concept CI/CD pipelines for release build and deployment using Jenkins, Jira, Bitbucket, Docker, Ansible, OpenShift, Kubernetes, Artifactory, Python, shell scripting and analytics.
Design and setup of new CD pipeline for deploying broker on AWS (AKS) and OpenShift.
Conversion and migration of all Jenkins jobs to GitLab (Keycloak, HashiCorp Vault).
Implementation of deployment application with authentication using Python Django 2.x, SQLAlchemy, Flask, WSGI (pytest, unittest), REST API and network security checks.
Support of Kanban process.
Concepts for network and services infrastructure for microservice applications.
Design, development and optimization of ETL workflows using Informatica PowerCenter and Talend to extract, transform and load data into enterprise data warehouses.
Management of large-scale data integration projects ensuring data quality and consistency across multiple systems.
Implementation of data models and dimensional schemas to support reporting and analytics for business intelligence teams.
Migration of legacy data systems to modern cloud platforms (Snowflake, Redshift) using Talend.
Integration of security controls into the secure software development lifecycle (SDLC).
Risk analysis using vulnerability scoring systems such as CVSS.
Implementation of cybersecurity standards using SIEM/SOAR, CIS Benchmark, OpenSCAP, OWASP, PCI DSS and infrastructure hardening.

Jan 2019 - Feb 2020

1 year 2 months

Frankfurt, Germany

DevOps Engineer in the Transform Team cOps (Contractor)

Deutsche Bahn AG

Analysis and support of build processes (Jenkins, Docker, Maven, Gradle, Ant, Artifactory, SOAP, MockUI) and delivery processes (Jenkins, OpenShift) of the internal RIM (Rail in Motion) application on-premises (datacenter, Ceph, MinIO, NetApp, Crossplane, Pulumi) and in the cloud (AWS, EKS, GCP).
Setup of new CI build automation/integration, CD delivery and CD deployment for lift-and-shift to AWS and planned microservices (UI tests, unit tests, API tests, functional tests, Selenium, SonarQube).
Analysis and migration of RIM application structure into AWS cloud using lift-and-shift and microservice approaches.
Analysis and implementation of database migration from Oracle to open source PostgreSQL using Ora2Pg, AWS SCT and DMS services.
Support of DevOps CI/CD toolchain (Jenkins, Jira, Confluence, Artifactory, OpenShift/Kubernetes, GitLab with GitFlow, SonarQube, WhiteSource, Fortify).
Improvement of agile processes (Scrum, sprint, review, Kanban, retrospective).
Design and implementation of new CI and CD pipelines for common Gradle and Maven projects on GitLab with code compliance using WhiteSource and Fortify and deployment to different stages on-premises and in the cloud.
Conversion and testing of CI/CD pipelines from Jenkins to GitLab.
Mobile smoke tests (ELK stack, Grafana, JMeter, CouchDB).
Support of migration to different OpenShift environments.
Migration of multiple enterprise applications from data center to AWS cloud using lift-and-shift.
Migration of various microservice applications from cloud-based platforms into AWS cloud using container technology (Docker, Helm charts, Terraform).
Support of cloud-based applications (Modular Cloud on AWS, Azure, GCP), WebSphere and WebLogic application servers.
Design and implementation of new CI and CD for automated testing using Appium, Cucumber and Selenium for mobile apps.
Design and setup of new DevOps infrastructure on Modular Cloud (AWS, EC2, RDS, VPC, Ansible).
Design and setup of new CD pipeline for deploying broker on AWS (AKS) and OpenShift.
Conversion and migration of all Jenkins jobs to GitLab (Keycloak, HashiCorp Vault).
Implementation of deployment application with authentication using Python Django 2.x, SQLAlchemy, Flask, WSGI (pytest, unittest), REST API and network security checks.
Support of Kanban process.
Concept development for network and services infrastructure for microservice applications.

Aug 2018 - Dec 2018

5 months

Frankfurt, Germany

DevOps Engineer in the Business Transform Team (Contractor)

Lufthansa AirPlus GmbH

Setup of new infrastructure environments for Test, Dev, Prod (non-live) and Prod (live) on Microsoft Azure in the Europe region.
Installation and configuration of DevOps tool components for CI build automation/integration and CD delivery/deployment using Atlassian Jira, Confluence, Bitbucket, Jenkins (DSL scripting), Maven, Gradle, Docker and Helm, Python, Ansible, Ansible Tower, Sonatype Nexus, SonarQube, IoT, mobile and smart devices, Terraform, Bicep, Vault, Tosca and SAP HANA.
Creation of new pipelines to support CI build automation.
Setup of new OpenShift Kubernetes and Azure Kubernetes Service (AKS) to deploy PCI credit application on Microsoft Azure using Kubernetes, Crossplane, Helm charts, OpenShift and Terraform.
Support of DevOps processes and external interfaces to Kafka and Hadoop ecosystem Hortonworks.
Configuration of application monitoring using AppDynamics and Docker container monitoring using Datadog, Prometheus, ELK and Grafana.
Generation of new infrastructure-as-code scripts using Python 2.x and 3.x, Python SDK and Jupyter (Anaconda).
Creation and management of Azure resources such as virtual machines, storage accounts and networks.
Monitoring of Azure resources using Azure Monitor, on-premises Datadog, Nagios and Check_MK.
Management of Azure Active Directory for user authentication and authorization.
Configuration of virtual networks, load balancers and VPNs.
Management of Azure storage accounts, blob storage and file shares.
Scripting and automation of Azure tasks using PowerShell, Azure CLI and ARM templates.
Use of Azure DevOps or GitHub Actions for CI/CD pipelines.
Third-level support for operations and operational documentation.

May 2018 - Aug 2018

4 months

Frankfurt, Germany

DevOps Engineer in the MBB Core Team (Contractor)

Valtech GmbH

Configuration and implementation of new microservice MBB in lift-and-shift architecture into AWS using Docker and Kubernetes, Docker Swarm, CloudFormation and IAM for MBB core of Audi/VW.
Provision of end-to-end DevOps CI pipeline to build core packages and web core components for MBB core service (Git, GitLab, Bitbucket, Java, Maven, Gradle, Ant, Jenkins, Chef, Terraform, Python, Oracle, PostgreSQL, SonarQube, Grafana).
Provision of end-to-end DevOps CD pipeline to deploy MBB core on AWS to different stages (UAT, BETA, PROD) using GitFlow, CodeDeploy, CodePipeline, AWS ECS.
Support of development team in designing and building test processes and test tools.
Building new Docker containers (Jenkins, Concourse) and testing.
Building new Kubernetes Helm chart packages for current services on AWS.
DevOps support for AmpelInfoCore service of Audi (Cassandra, Kafka, Tomcat, ZooKeeper), including build automation, CI/CD pipeline creation, testing and deployment.
Use of agile Scrum methods with Jira, Confluence and Bitbucket.
Implementation of cybersecurity best practices and standards using CIS Benchmark baseline, OpenVAS and analysis and automated response using SIEM/SOAR for IT infrastructure.

Jan 2018 - Apr 2018

4 months

Bensheim, Germany

DevOps Engineer in the Innovation Technology Team (Contractor)

Dentsply Sirona

Agile development and build automation using TeamCity, C#, .NET Core, PowerShell, shell scripting, Python and integration with external medical and IoT devices.
Continuous integration automatic builds of Sirona framework workflow pipelines on TeamCity (NuGet, Artifactory, Debian packages, NuGet feeds).
Continuous deployment of Sirona framework workflow pipelines using TeamCity to different environments.

Apr 2017 - Dec 2017

9 months

Seattle, United States

DevOps Support Engineer in SDE NSS (Contractor)

Amazon

Agile and Scrum-based development and build automation using AWS CodePipeline and code review.
Design and implementation of secure and scalable AWS architectures including VPC, EC2, S3, RDS and Route53.
Automated system provisioning and deployment using CloudFormation templates.
Configuration of IAM roles, policies and permissions to ensure secure access control.
Patch management, backup automation and disaster recovery setup on AWS infrastructure.
Monitoring and optimization of system performance using AWS CloudWatch and AWS Trusted Advisor.
Development and maintenance of CI/CD pipelines using Jenkins, GitLab CI/CD with GitFlow and AWS CodePipeline.
Configuration of AWS CloudWatch to monitor application performance and system events.
Planning and execution of migration of on-premises applications to AWS cloud platforms.
Deployment of containerized applications using Docker and Kubernetes in AWS environments.
Deployment of internal software packages between availability zones using AWS CodeDeploy.
Setup of new stages for new AWS regions and feedback to SDE teams for process improvements.
Setup and development of new security monitoring to manage credential access on networks across all regions (AWS CI/CD pipelines, SQS, ELK stack, CloudFormation, CloudWatch, Kafka, EC2, VPC, S3, DynamoDB, Git, GitLab, GitHub, Grafana, Prometheus alerts, Red Hat Satellite, Nagios, Datadog).
Configuration automation using CloudFormation for new internal projects including IoT, machine learning and ELK data collection.
Development and deployment of new high-availability network configurations to all devices within AWS regions using Python.
Big data collection, conversion and transformation for Disney streaming project (Hadoop, MapReduce, Kafka, Spark, PySpark, Python 2.x, Python 3.x, Ruby).
Development and review of applications for various media streaming projects using Kafka, AWS MQ and Hadoop ecosystem (Hortonworks, Cloudera).
Support of operational daily issues on national and global scale.

Feb 2016 - Oct 2016

9 months

Frankfurt, Germany

DevOps Engineer in the Global Technology Office (Contractor)

Deutsche Bank AG

Supervision of incident, problem and release processes for global web hosting service built on OpenStack, Linux and Windows.
Third-level support for Deutsche Bank cloud hosting service (application servers).
Development of automated scripting tools and utilities (Python, Flask, Jinja, Perl, Ruby, Java, web services, REST API, SOAP).
Application release deployment and automation using CI/CD processes (Docker, Kubernetes, Jenkins, Python, Ansible, Django) in AWS and OpenStack environments.
Verification of release processes.
Big data analysis (Hadoop, Splunk, Python, AWS Glacier).
Optimization of server and network infrastructure.

Oct 2015 - Feb 2016

5 months

Frankfurt, Germany

Data Analyst in the Investment Banking IT Service (Contractor)

DZ Bank AG

Technical support for release change of FrontArena from 6.x to 7.x (installation, database, Arena configuration) and testing before go-live.
Development and deployment of APIs built in ETL processes for data transfer between Oracle and Sybase databases (SQL, Oracle, Sybase).

Feb 2015 - Oct 2015

9 months

Frankfurt, Germany

Application Management Engineer in the Private Banking IT Service (Contractor)

Commerzbank AG

Verification of release and testing processes of new payment transfer system (SEPA) for EFIS business (web services REST API, C, C++, Linux, PostgreSQL).
Setup, installation and configuration of new EFIS applications.
Application monitoring using TIBCO Hawk.
Training and user support.

May 2014 - Dec 2014

8 months

Frankfurt, Germany

System Engineer in the Investment Banking IT Service (Contractor)

DZ Bank AG

Maintenance and monitoring of applications and related API processes of derivative trading systems (XPASS, Front Arena, Murex MX, Eurex, Windows and Oracle).
Setup, installation and configuration of new applications.
Implementation of big data processes using Splunk (Python, SDK, web services, XML, REST API, SOAP).
Training and support.

Jan 2012 - Jan 2014

2 years 1 month

Waiblingen, Germany

DevOps Engineer in the IT Operation Management (Contractor)

Bosch Innovation GmbH

Design and implementation of application management and service management processes for innovative internet-based services (IoT, IAP, ESI).
Design and implementation of infrastructure and data management environments (cloud, AWS, Splunk, IC clusters, Docker, VMware ESX).
Handling and supervision of DevOps and configuration management processes (UC4 ARA, Git, Splunk, GitLab, Python, Ruby, Node.js, Angular.js, jQuery, D3.js, Rails, CFEngine, Puppet, Ansible, Vagrant, microservices, Kubernetes, Flask, Jira, Nexus, Jenkins, Maven, OSGi, Tomcat, Glassfish, Nginx, Java, REST API, SOAP), WebLogic and WebSphere.
Support of application management processes.
Maintenance and verification of patch management processes (Red Hat/SUSE, Red Hat Satellite, Nagios).
Maintenance and monitoring of database services (Oracle, MySQL, MongoDB).
Maintenance and monitoring of storage services (SAN, NAS, S3, Hadoop, Tivoli, NetBackup/Recovery).
Application release deployment and automation using CI/CD processes (Docker, Kubernetes, Jenkins, GitLab, Python, Ansible, Puppet, Django, Flask) in AWS and Google Cloud.
Verification of agile release processes (Agile, Scrum, Jira, Confluence).
Maintenance and monitoring of deployment processes (UC4 ARA, Docker, Kubernetes, Vagrant, Puppet, CFEngine, Ansible).
Preparation of performance analysis processes (Nagios, BMC Patrol, TIBCO BW, TIBCO Hawk).
Verification of security and audit processes (certificate management).
Design and optimization of server and network infrastructure for DevOps build and deployment.
Monitoring of datacenter infrastructure (Zabbix, Nagios, Check_MK, Icinga).
Training and support.

Jan 2010 - Dec 2011

2 years

Darmstadt, Germany

DevOps Engineer in the Product Innovation T-Online Service (Contractor)

Deutsche Telekom

Design and implementation of new infrastructure deployment system for Telekom cloud environment and external public cloud (Perl, Python, Ruby, Node.js, Angular.js, jQuery, Hadoop, Docker, Vagrant, Puppet, Ansible, OnCloud, VMware ESX, REST API, SOAP, Solaris Zones, KVM, LXC, AWS, MongoDB, Hadoop, OpenStack), WebLogic and WebSphere.
Verification of release management processes (Agile, Scrum, Jira).
Design and implementation of deployment management processes (Docker, Vagrant, Puppet, CFEngine, Ansible).
Maintenance and support of new infrastructure data center services (Linux and cluster, Hadoop and cluster, Solaris and cluster, applications and clusters, network and clusters).
Data modeling using ETL processes (Pentaho).
Maintenance of internal CMS information dashboard (Joomla-based, MySQL, PHP, add-ons, plugins).
Virtualization and optimization of server and network infrastructure (vSphere, vSAN, vStorage, ESXi, hypervisor, containers, Solaris Zones).
Data center monitoring (Nagios, Check_MK).

Apr 2009 - Dec 2009

9 months

Darmstadt, Germany

System Engineer in the IT System and Operation Service (Contractor)

Deutsche Post AG – DHL

Maintenance and monitoring of data center infrastructure services of DHL (servers – Sun Solaris and clusters, Solaris Zones, Linux and clusters, Windows and clusters, VMware ESX clusters, Veritas clusters, EMC Networker, application servers and clusters, Hadoop, AWS, REST API, SOAP).
Maintenance, configuration and support of global postal products (PEP, RIO, KGB, POINT, PALIS) in Tomcat and WebSphere environments.
Release deployment within SDLC.
Development of related tools and utilities.

Oct 2008 - Feb 2009

5 months

Heidelberg, Germany

System Engineer in the IT Operation Service (Contractor)

Heidelberger Lebensversicherung

Design and implementation of new portfolio fund contract system (PowerShell Windows tier system and Sybase database).
Setup, installation and testing of related test, development and production environments.
Maintenance and support of investment application products (Reuters, Bloomberg, Xetra, Eurex, Murex, Summit, Kondor+ and their clients).

Aug 2008 - Oct 2008

3 months

Munich, Germany

System Engineer in the IT System and Operation Service (Contractor)

Britisch Telecom

Maintenance, monitoring and support of data center services (application servers – Sun Solaris, Linux, Veritas, network devices, backup systems, database servers – Oracle, MySQL, MSSQL, PostgreSQL).
Development of automated tools and utilities for internal use (shell, Perl, Python, C, C++, SQL).
Data center monitoring (Zabbix, Nagios, Check_MK).

May 2008 - Aug 2008

4 months

Wiesbaden, Germany

Application Engineer in the IT System and Operation Service (Contractor)

Aareal Bank

Maintenance, monitoring and support of derivative trading system SUMMIT and related components (Solaris Veritas cluster, Sybase and replicated database server).
Verification of problem and release management processes.

Oct 2007 - Apr 2008

7 months

Frankfurt, Germany

System Engineer in the IT Operation Service (Contractor)

EDS – Salomon Openheim

Maintenance, monitoring and support of data center services in investment banking environment (backend application servers – Sun Solaris, Linux, Veritas, network devices, backup systems, database servers – Oracle, Sybase, DB2, MSSQL).
Handling of problem and release management processes.
Support of external customer CMS systems (PHP and Java-based).

Jan 2007 - Oct 2007

10 months

Offenbach, Germany

System Engineer in Investment Banking IT Service (Contractor)

Helaba

Maintenance, monitoring and support of derivative trading system Murex MX.x and related components (Solaris Veritas cluster and Sybase with replicated database server).
Maintenance, monitoring and support of data center services (backup, recovery, disaster recovery, data storage).
Data center monitoring (Zabbix, Check_MK).

Sep 2006 - Dec 2006

4 months

Rüsselsheim, Germany

DBA Engineer in the ITDB System Management (Contractor)

EDS – Opel AG

Maintenance, monitoring and support of database storage services in Opel data center (backend database servers – Oracle, Sybase, MSSQL, MySQL).
Handling of problem and release management processes.
Data center monitoring (Zabbix, Check_MK).

Oct 2005 - Sep 2006

1 year

Nuremberg, Germany

System Engineer in the IT System Operation Service (Contractor)

Fiducia – Noris Bank AG

Design and implementation of new technology processes for migration of investment banking business from old IBM structure to SAP R/3.
Preparation and implementation of new related service support processes (ITIL).
Development, configuration and testing of new applications connected to and from SAP R/3 environment.
Maintenance and monitoring of new data center.
Training of staff.

Jul 2005 - Oct 2005

4 months

Frankfurt, Germany

System Engineer in the Citibank AG – IT Investment Banking (Contractor)

Citigroup

Maintenance and support of data center services (backend application servers – Sun Solaris, Linux, Veritas, network devices, backup systems, database servers – Oracle, Sybase, external provider environments – Reuters, Bloomberg, German Stock Exchange, London Stock Exchange).
Maintenance, support and monitoring of investment application products (Reuters, Bloomberg, Xetra, Eurex, Murex, Summit, Kondor+ and their clients, Tibco RendezVous and Hawk).
Data center monitoring (Zabbix, Nagios, Icinga, Check_MK).

Oct 2004 - Jun 2005

9 months

Düsseldorf, Germany

System and Application Engineer in the IT Investment Banking – Risk Management Unit (Contractor)

West LB Bank

Maintenance and support of data center services (backend application servers – Sun Solaris, Linux, Veritas, network devices, backup systems, database servers – Oracle, Sybase, external provider environments – Reuters, Bloomberg, German Stock Exchange, London Stock Exchange), WebLogic application server.
Maintenance and support of investment application products (Reuters, Bloomberg, Xetra, Eurex, Murex, Summit, Kondor+ and their clients).

Apr 2004 - Sep 2005

1 year 6 months

Frankfurt, Germany

System Engineer in the Customer Technical Support Unit (Contractor)

Deutsche Boerse (German Stock Exchange)

First-level support for external customers and financial providers for German Stock Exchange products (Xetra, Eurex, Xentric).
Testing of new releases and products.

Sep 2003 - Mar 2004

7 months

Frankfurt, Germany

Application Management Engineer in the IT Investment Banking (Contractor)

Commerzbank AG

Maintenance and support of data center services (backend application servers – Sun Solaris, Linux, Veritas, network devices, backup systems, database servers – Oracle, Sybase, external provider environments – Reuters, Bloomberg, German Stock Exchange, London Stock Exchange).
Maintenance and support of investment application products (Reuters, Bloomberg, Xetra, Eurex, Murex, Summit, Kondor+ and their clients).

Aug 2002 - Aug 2003

1 year 1 month

Düsseldorf, Germany

Application Engineer in the IT Investment Banking (Contractor)

West LB Bank

Maintenance and support of data center services (servers – Linux, Solaris, Windows, Cisco network devices).
Maintenance and monitoring of investment banking database services (Oracle, Sybase, MySQL, MSSQL).
Maintenance and support of data storage services (SAN, NAS, IBM/Filer).

Nov 2001 - Jul 2002

9 months

Frankfurt, Germany

Application Management Engineer in the IT Operation and Investment Banking (Contractor)

ABN Amro Bank

Project management for various IT projects in investment banking unit for Y2K implementation.
Maintenance and support of data center services (backend application servers – Sun Solaris, Linux, Veritas, network devices, backup systems, database servers – Oracle, Sybase, external provider environments – Reuters, Bloomberg, German Stock Exchange, London Stock Exchange).
Maintenance and support of investment application products (Reuters, Bloomberg, Xetra, Eurex, Murex, Summit, Kondor+ and their clients, Tibco Hawk), WebSphere.
Service management, problem management, release management and capacity management.
Identity management and security management.

May 2001 - Oct 2001

6 months

Frankfurt, Germany

Application Management Engineer in the IT Investment Banking (Contractor)

Dresdner Bank

Maintenance and support of data center services (backend application servers – Sun Solaris, Linux, Veritas, network devices, backup systems, database servers – Oracle, Sybase, external provider environments – Reuters, Bloomberg, German Stock Exchange, London Stock Exchange).
Maintenance and support of investment application products (Reuters, Bloomberg, Xetra, Eurex, Murex, Summit, Kondor+ and their clients, Tibco Hawk).

Jan 1999 - Apr 2001

2 years 4 months

Frankfurt, Germany

Application Management Engineer in the IT Operation and Investment Banking (Contractor)

ABN Amro Bank

Project management for various IT projects in investment banking unit for Y2K implementation.
Maintenance and support of data center services (backend application servers – Sun Solaris, Linux, Veritas, network devices, backup systems, database servers – Oracle, Sybase, external provider environments – Reuters, Bloomberg, German Stock Exchange, London Stock Exchange).
Maintenance and support of investment application products (Reuters, Bloomberg, Xetra, Eurex, Murex, Summit, Kondor+ and their clients).
Service management, problem management, release management and capacity management.
Identity management and security management.

Jul 1998 - Jan 1999

7 months

Bonn, Germany

Application Management Engineer in the IT Operation - Private Banking (Employer)

Post Bank

System manager responsible for CASH front-end unit on IBM/S88 Stratus, RS600 and Sun Solaris.
Responsibility for team organization, development, maintenance and support.
Support of project teams for various migration projects.
Security management and data management.

Jan 1998 - Jul 1998

7 months

Mülheim, Germany

System Engineer in the IT Operation Service (Employer)

Tengelmann

Design and implementation of new position warehouse system (debit/credit acceptance system).
Design and implementation of new communication interface between POS and FOCIS data warehouse system (X.400, X.25).
Testing and training.

Feb 1993 - Dec 1997

4 years 11 months

Meerbusch, Germany

System and Development Engineer in the IT Operation Data Center Management (Employer)

Citigroup

Maintenance and support of ON/2-OLTP system on IBM/S88 Stratus.
Maintenance and support of SNA infrastructure, home banking services and POS services.
Support of ATM/POS European consolidation migration project to Meerbusch data center.
Development and testing of third-party software and APIs to other financial systems.
Service support.

Jan 1992 - Dec 1992

1 year

Frankfurt, Germany

System and Development Engineer in the IT Operation Data Center Management (Employer)

B&S Visa Card Service

Maintenance and support of ECASH/OLTP system on IBM/S88 Stratus.
Development and testing of tools for daily support.
Release updates, backup and recovery.
Support of new related projects.

May 1989 - Dec 1991

2 years 8 months

Frankfurt, Germany

Development Engineer in the IT Operation Data Center Management (Employer)

Sita – ITS Data Service

Design and implementation of client/API for SITA Telematics Node in C and C++ using X.25 protocol.
Maintenance and support of local telematics test and development environment.
Training and support.

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Banking and Finance (19 years), Information Technology (10 years), Telecommunication (4.5 years), Government and Administration (2 years), Transportation (2 years), and Retail (1 year).

Banking and Finance

Information Technology

Telecommunication

Government and Administration

Transportation

Retail

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (34.5 years), Operations (26 years), Quality Assurance (3 years), Project Management (3 years), Business Intelligence (2 years), and Customer Service (2 years).

Information Technology

Operations

Quality Assurance

Project Management

Business Intelligence

Customer Service

Skills

Application Management
Project Management
Itil Service Management
Technology Business Analyst
System Development
Senior Engineering
Agile Software Development
Dba Maintained
Cloud Maintenance
Test Management
Infrastructure Management
Resource Management
Big Data Maintenance
Devops
Storage Management
Security Management
Sap R/3 Maintenance
Etl/data Warehouse
Virtualization
Requirement Management
Continuous Deployment
Data Center Management
Continuous Integration
Continuous Delivery
Devops Engineer
Cloud Engineer
Data Center Infrastructure
Cloud Infrastructure
Programming: C, C++, Perl, Python, Ruby, Java, Shell, Sql, R, Agile, Scrum And Kanban, Go
Operating System: Vos, Linux, Solaris, Embeded Linux, Sna
Database: Oracle, Sybase, Db2, Mysql, Mongodb, Postgresql, Sqlite, Sqlalchemy
Application And Web Server: Apache, Nginx, Tomcat, Glassfish, Weblogic, Websphere, Jboss
Storage: S3, San, Nas, Filler, Nfs, Vlan, Netbackup, Emc, Nsx, Vsan, Netapp, Sdn, Vsphere, Vcenter, Minio, Ceph Cluster
Framework: Uc4, Tivoli, Tibco, Docker, Docker Swarm, Docker Compose, Kubernetes, Microservices, Puppet, Chef, Cfengine, Vagrant, Nagios, Icinga2, Check Mk, Openstack, Hadoop, Hadoop Ecosystem (Hortonwork, Cloudera), Spark, Hadoop, Hive, Mapreduce, Yarn, Hbase, Informatica, Talend, Oncloud, Flask, Django, Jinja 2, Jquery, Node.js, Angular.js, D3.js, Splunk, Jenkins, Open Monitoring Distribute, Servicenow, Remedy, Tivoli, Jira, Confluence, Aws (Ec2, S3, Vpn, Route53, Codebuild, Codecommit, Codepipeline, Codedeploy, Eks, Lamdba, Sns, Sqs, Elk, Cloud Watch, Cloudformation, Rds, Lightsail, Emr, Elastic Beanstalk), Sap R/3, Rest Api (Oauth), Soap, Pentaho, Jenkins, Teamcity, Elk Ecosystem Stack, Citrix, Syslog-ng, Nx-log, Filebeat, Logstash, Kafka, Apache Cassandra, Concourse, Mock, Mockui, Graylog, Whitesource, Fortify, Aws, Azure, Azure Devops, Gc, Gitlab, Maven, Gradle, Ant, Modulare Cloud, Podman, Apache Mesos, Apache Camel, Apache Airflow, Spinnaker Ci/cd, Iot, Django, Spark, Hashicorp Terraform, Bicep, Prometheus, Pulumi, Crossplan, Data Dog, Cloud Foundry, Open Stack, Hashicorp Packer, Consul, Logstash, Awx Ansible, Ansible Tower, Ansible Automation Platform, Vmware Esxi, Rest Api, Aria, Horizon, Redhat Ansible Automation Platform, Redhat Satellite, Blockchain, Hyperledger/besu, Okd, Minikube, Kubeflow, Kserve, Azure-arc-k8s, Flux, Gitops Api, Solarwinds, Argocd, Linux Lipc-1 And Lipc-2, Cyberark, Sonobuoy, Ansible Collection, Data Analytics, Streamlit Framework, Semaphore Ansible Ui, Devsecops, Siem, Sentinel, Nexus Vulnerability Scanning, Soc, Cvss Score, Power Bi, Benchmark Operator, Data Sciences, Rasperypi Iot, Mlflow, Polars, Pytorch, Tensorflow, Scikit-learn, Microsoft Fabric, Datapipeline, Synapse Dataengineering, Onelake, Netbox, N8n Workflow Automtation.

Languages

German

Native

English

Advanced

Education

Dec 1982 - Feb 1989

University of Applied Sciences Aachen

Diplom Engineer · Aachen, Germany

Oct 1982 - Jun 1982

Technical High School I

High school diploma · Aachen, Germany

Certifications & licenses

AWS-CLF-C101,C102

AZ-104

AZ-204

AZ-900

CISCO RS/600

CompTIA SYS-601

DBA Oracle

IBM/S88 Admin I- II

ITIL

LPIC1-101-102

LPIC3-303

MSSQL

PRICE-2

Python Advanced

RedHat (RHCSA,EX200,EX280)

SOLARIS I+II+III

SPLUNK

TCP/IP

Profile

Created

May 2025

Last Update

January 2026

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Tan based?

Tan is based in Hanau, Germany.

What languages does Tan speak?

Tan speaks the following languages: German (Native), English (Advanced).

How many years of experience does Tan have?

Tan has at least 34 years of experience. During this time, Tan has worked in at least 34 different roles and for 34 different companies. The average length of individual experience is 1 year and 10 months. Note that Tan may not have shared all experience and actually has more experience.

What roles would Tan be best suited for?

Based on recent experience, Tan would be well-suited for roles such as: DevOps Engineer in the DevOps Team, DevOps Engineer in the ELISA Team, DevOps Engineer in the DevOps BKMS Team.

What is Tan's latest experience?

Tan's most recent position is DevOps Engineer in the DevOps Team at Rise-World.

What companies has Tan worked for in recent years?

In recent years, Tan has worked for Rise-World, BAMF, Bundesdruckerei, IBB/DKB Bank, and Hornbach.

Which industries is Tan most experienced in?

Tan is most experienced in industries like Banking and Finance, Information Technology (IT), and Telecommunication. Tan also has some experience in Government and Public Administration, Transportation and Logistics, and Retail.

Which business areas is Tan most experienced in?

Tan is most experienced in business areas like Information Technology (IT), Operations, and Project Management. Tan also has some experience in Quality Assurance (QA), Business Intelligence, and Customer Service.