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Tan (Loc) L.

DevOps Engineer

Hanau, Germany

Experience

Jan 2023 - Mar 2025
2 years 3 months
Vienna, Austria

DevOps Engineer

RISE-World

  • Implemented DevOps solutions to automate infrastructure using Terraform, Bicep, CloudFormation and Ansible on premises datacenter (Ovirt, Proxmox, Ceph Cluster, MinIO) and private cloud
  • Administered, configured and implemented CI/CD pipelines (GitLab, GitFlow) with Artifactory, Prometheus, Istio, Service Mesh, Helm Chart, OpenShift/Kubernetes and Red Hat Satellite
  • Set up, monitored and patched Linux infrastructure (Red Hat Enterprise) for Dev, Test and QA
  • Established and enforced security standards for deploying ePA applications across Dev, Test, QA and Prod stages
  • Developed plugins and add-ons for existing infrastructure
  • Provided database support and data analytics support using Python, Spark, Pandas, Power BI and Splunk Enterprise
  • Implemented DevSecOps and BizDevOps best practices using GitOps (ArgoCD), Streamlit framework and Semaphore Ansible UI
  • Configured and tested performance benchmarks (iperf, uperf, sysbench) with benchmark-operator, IoT and MDM devices, reporting via ELK/OpenSearch
  • Built Databricks platform for big data collection and analysis (Python Pandas, PySpark, Power BI, Apache Airflow)
  • Developed backend data aggregation and processing pipelines between OpenShift clusters and big data frameworks (Python Pandas, PySpark, Apache Spark, PostgreSQL, Django, Ansible, Jira Service Management)
  • Created ML pipeline platform using KubeFlow, TensorFlow and KServe
  • Performed ETL from structured and unstructured sources into analytic DWH/Big Data Spool (Python, Pandas, Polars, Power BI, Django, PostgreSQL)
  • Deployed HashiCorp Vault cluster for PKI and IAM in test and QA environments
  • Automated patching based on CVSS scores and SIEM-integrated CVE data; used Nexpose and InsightVM for vulnerability scanning
  • Designed and implemented secure, scalable AWS architectures (VPC, EC2, S3, RDS, Route53), with similar deployments in Azure and GCP
  • Automated provisioning and deployment with CloudFormation; configured IAM roles and policies
  • Managed patching, backup automation and disaster recovery on AWS
  • Monitored performance using AWS CloudWatch and Trusted Advisor
  • Supported VMware vSphere, vRealize and Horizon virtual desktop environments
  • Developed and maintained CI/CD pipelines in Jenkins, GitLab CI/CD and AWS CodePipeline; integrated Nutanix
  • Planned and executed migration of on-premises applications to AWS
  • Deployed containerized applications with Docker and Kubernetes; used AWS CodeDeploy across availability zones
  • Built and deployed ML models with Scikit-learn, XGBoost and Spark MLlib; handled hyperparameter tuning, evaluation and production deployment
Jun 2022 - Dec 2022
7 months
Nuremberg, Germany

DevOps Engineer

BAMF

  • Implemented CI/CD pipelines for Spring Boot frontend microservices (elisa-ui-xx, kafka-ui) and backend microservices (elisa-xx, kafka-xx, mongodb-xx, oracle-xx), testing and deployment on OpenShift/Kubernetes
  • Administered and configured DevOps tools (Jenkins, Artifactory, Spring Boot, Prometheus, Istio, Service Mesh, Helm Chart, OpenShift, Kubernetes), Red Hat Satellite, Nagios and Check_MK
  • Employed Scrum and Kanban methodologies
  • Implemented security standards across Dev, Test, QA and Prod stages
  • Designed and implemented cybersecurity best practices using SIEM/SOAR, Microsoft Sentinel, NIST, EDR/NDR, OpenVAS, CIS Benchmark, OpenSCAP, OWASP, Splunk SOAR, Elastic Security and PCI DSS
  • Developed custom tools in Python, Ruby, Go, shell, SQL, JavaScript, TypeScript and Angular; used Oracle, MongoDB and Apache Kafka
Jan 2022 - Mar 2022
3 months
Berlin, Germany

DevOps Engineer

Bundesdruckerei

  • Analyzed, code reviewed and implemented CI/CD pipelines for the Bekanntmachung team following Scrum and sprint standards
  • Configured and deployed CI/CD on BDR Kubernetes cluster with Rancher, Helm, Spring Boot, Docker, Jira, Elasticsearch, Grafana, Prometheus, Confluence, GitLab, Terraform and Ansible
Nov 2021 - Jul 2022
9 months
Berlin, Germany

Application Manager and DevOps

IBB/DKB Bank

  • Administered, configured and deployed Treasury Kondor+ and interfaces
  • Developed, configured and tested batch processing for end-of-day imports/exports, interfaces to feed servers and banking middleware; provided DR support
Aug 2021 - Apr 2022
9 months
Landau, Germany

DevOps Engineer

Hornbach

  • Implemented shared library for CI/CD pipelines to send annotations to MS Teams, ArgoCD, Jira, Grafana, Dynatrace, OpenStack, Proxmox VE, Datadog and Ceph Cluster
  • Implemented pod validation for Kubernetes clusters using Sonobuoy
  • Adopted Pipeline as Code with Jenkins YAML and Terraform
  • Deployed Ansible configurations via AWX and migrated roles to collections; implemented ansible-navigator
  • Developed DevOps tools in Go for data security processing and REST API interfaces
  • Designed and implemented scalable, multi-region and DR cloud solutions on Azure with Azure DevOps pipelines
  • Managed AKS workloads ensuring high availability and security compliance; leveraged Azure AI/ML tools
  • Designed and implemented AWS architectures (VPC, EC2, S3, RDS, Route53); automated provisioning with CloudFormation
  • Configured IAM, patch management, backups and DR on AWS; monitored with CloudWatch and Trusted Advisor
  • Built CI/CD pipelines with Jenkins, GitLab CI/CD and AWS CodePipeline; used AWS CodeDeploy across AZs
  • Migrated on-premises applications to AWS; deployed containerized apps with Docker and Kubernetes
Jun 2021 - Dec 2021
7 months
Berlin, Germany

DevOps Engineer

Bundesdruckerei

  • Analyzed, code reviewed and implemented CI/CD pipelines for Hyperledger tools (Besu, Fabric) and IPFS deployment in blockchain infrastructure
Mar 2021 - Nov 2021
9 months
Hamburg, Germany

DevOps Engineer

Bitmarck Technik GmbH

  • Planned and migrated IKK customer application services from Ludwigsburg private cloud to Hamburg data center
  • Optimized release and deployment processes
  • Designed microservice architecture using Jenkins, JBoss, DB2, OpenShift, Docker, vSphere, GitLab, Terraform, Bicep, Ansible; planned resources with Crossplane and Pulumi
  • Deployed scalable Azure solutions managing 50+ VMs; automated provisioning with Terraform, Ansible and ARM templates; established Azure DevOps CI/CD; migrated on-premises apps to Azure
Mar 2020 - Jan 2021
11 months
Frankfurt, Germany

DevOps Engineer

BaFin

  • Designed CI process with Jenkins, Maven, Ant, Gradle, Bitbucket, SVN, Artifactory, Docker/Podman, OpenShift and on-prem Kubernetes
  • Architected IAM for CD across environments
  • Developed, tested and operated DSL CI/CD pipelines with Selenium and SonarQube
  • Designed configuration automation with Ansible and Ansible Tower; performed POCs for best practices
  • Implemented IaC for staging and DevOps environments using Terraform, Linux, Red Hat, Ansible, AWX, Bitbucket and VMware
  • Redesign enterprise apps to microservices with Docker, Podman, Kubernetes, Helm and OpenShift; deployed with Artifactory, WebSphere and WS Liberty
  • Deployed web services via Python Fabric; processed big data with PySpark, Pandas and Power BI
  • Documented in Confluence; conducted POCs for pipelines and broker deployments on AWS AKS and OpenShift; migrated Jenkins jobs to GitLab; implemented authenticated deployments with Django, SQLAlchemy, Flask, WSGI, pytest, unittest, REST API and network security checks
  • Developed ETL workflows with Informatica and Talend; managed data integration; implemented dimensional models and cloud migrations; integrated security controls into SDLC; performed risk analysis with CVSS; enforced cybersecurity standards (SIEM/SOAR, CIS Benchmarks, OpenSCAP, OWASP, PCI DSS)

Summary

  • 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

Languages

German
Advanced
English
Advanced

Education

Oct 1982 - Feb 1989

University of Applied Sciences

Diploma in Engineering · Aachen, Germany

Technical High School I

High School Diploma · Aachen, Germany

Certifications & licenses

AWS-CLF-C101

AWS-CLF-C102

AZ-104

AZ-204

AZ-900

C

C++

Cisco RS/600

DBA Oracle

Golang

IBM/S88 Admin I-II

ITIL

LPIC1-101-102

LPIC3-303

MSSQL

Price-2

Python Advanced

Solaris I+II+III

Splunk

TCP/IP

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