Janusz Mazurek - IT Senior Software Engineer

Recommended expert

Munich, Germany

Experience

Jul 2023 - Dec 2023

6 months

Munich, Germany

IoT Edge Computing / Self-Driving-Cars

Automotive consulting company

Platform: Python ecosystem, RHEL 8, K10, AWS IoT Core, AWS Lambda, MLOps
Software: Java JEE/cloud, IntelliJ IDEA, AWS IoT Core, AWS Edge and Lambda, AWS SageMaker SDK, Docker Compose, Kubernetes, OpenShift 4, Tekton, Flux, Helm charts, JSON/XML technology, Nginx, Apache Spark, OpenAI (GPT Plus, DALL-E 3, Whisper), GAN, GitHub Copilot, AI/machine and deep learning, Jupyter notebooks, TensorFlow 2, Colab, Keras API, Prometheus, Grafana, Conda, Python 3.9, PySci stack (NumPy, pandas, Scikit-learn, matplotlib)
Responsible for webinar:
IoT edge computing: architecture, components, resources, management
IoT edge computing with MicroK8s, designing and creating flows/diagrams for AWS, three-step model for IoT ecosystem
IoT processes, connectivity, data transfer and deployment, security
Optimization of edge computing for IoT networks and services (AWS SQS queue, SNS notifications, events, analytics, buttons, device management/defender, Things Graph)
Machine/deep learning frameworks (models, training, pipeline optimization, deployment in the cloud/at the edge (OpenShift), monitoring workloads with Prometheus and Grafana)
Performance optimization for low latency/resilience using adaptive ML/DL/RL models for customer IoT data
Analysis of large sensor data sets with Apache Spark, Kafka clusters
Kasten K10 data management platform on Kubernetes multi-cluster with Helm chart, deployment, backup/disaster recovery (RTO/RPO), data lifecycle and security management
Implementation of multilayer artificial neural network (ANN) with TensorFlow 2 and Colab for regression and classification; data analysis and provisioning for applications; development of models for testing and training, deployment of models
Automation of business streamline processes with AI (Azure OpenAI, Discord bots/Zapier apps AI assistants (IntelliJ, GitHub Copilot))

Jan 2023 - Apr 2023

4 months

Germany

Implementation of cloud services based on Java and Spring Boot

Consulting company

Platform: Debian/Ubuntu, OpenShift 4.10
Software: Java 11/17, Spring Boot 2.x/3.0, PostgreSQL, Oracle, Kubernetes + operator frameworks, Helm charts, STS 4.5, IntelliJ, CI/CD systems, GitOps with GitLab, Docker, Apache/Tomcat, Nginx, Ansible 2, Postman, Kafka cluster
Implementation of automated workflow for continuous delivery using CI-Jenkins pipelines (Maven build, Artifactory, Ansible, JUnit test)
Creating Docker images, pushing and registering images in container registry, scheduling Jenkins pipeline deployments
Security procedures for JEE web applications with Spring Security including Java KeyStore, advanced authentication and authorization with OAuth2, JSON Web Token, RBAC policies, vulnerability checks for Maven-built artifacts
Support and integration of JMS messaging and management services based on Kafka clustering, auto-scaling of microservices container applications
Creating and integrating resources (services, policies, management groups, managed databases (Oracle, PostgreSQL, GraphDB, InfluxDB)) using scripting languages (bash, Perl, Python, XML, YAML) and Unix tools (awk, sed)
Business daily operations/teleconferences, advising clients in workshops (system integration)
Support of microservices with Java versions 8/9/11/14/17, Spring Boot v.2.7.6/Spring Cloud, Docker, Docker Compose, Docker Swarm, Helm charts, OpenShift v.4.10 and Kubernetes 1.26 frameworks

Mar 2022 - Dec 2022

10 months

Germany

Implementation of JEE microservices with Spring Boot

Consulting company

Platform: Windows 10, Linux CentOS 7/8, RHEL 7, JBoss EAP / WildFly
Software: Spring Boot 2.x, PostgreSQL, OpenShift 4.10 / Kubernetes, STS 4.5, IntelliJ, CI/CD systems, GitOps with Docker, Apache/Tomcat, Nginx, Ansible 2, Docker Compose, Terraform, Jenkins, GitLab, Atlassian JIRA / Confluence, AWS cloud derivatives
Responsible for: S/LDAP/Kerberos, advanced authentication and authorization with OAuth2, wallets, JSON Web Token, RBAC policies
Support/integration of JMS messaging and management services based on Kafka clustering
Support of microservices and backend frameworks such as Spring Boot 2/Spring MVC, Docker Compose, Docker Swarm, Helm charts, Kubernetes
Support for the following Java/JEE frameworks and toolkits: Java JEE 8/9/11, Spring 5/6 / Spring Boot 2/3, Spring Data/Cloud/Web/Security, IntelliJ IDEA, Eclipse, JDeveloper, Open Liberty, JBoss EAP/WildFly, Apache Tomcat/Beams, JetBrains tools, Nginx, OSGi, AOP, Guice, Thymeleaf

Feb 2021 - Dec 2021

11 months

Hanover, Germany

Migration IBM Synergy/Change to GIT/JIRA

Consulting company

Sub-project: integration of artifacts into DevOps frameworks
Platform: Windows 10, Linux, SUSE 13, RHEL 6/7, JBoss EAP/WildFly, OpenStack
Software: Spring Boot 2, Oracle, Kubernetes, STS 4.5, IntelliJ, Eclipse, CI/CD system (GitOps) with Docker, Ansible 2, Docker Compose, Terraform, Jenkins, Gradle/Maven/Ant, SourceTree, Bitbucket, Git/GiFlow, GitLab, GitHub, Synergy/CCM, Synergy/Change, Atlassian JIRA/Confluence
Migration plan from VCS IBM Synergy environment to Git/GitLab (old environment with Ant/Jenkins, SonarQube, Jacoco and Artifactory)
Production rollout of new GitOps (IaC) environment with JIRA-GIT/GitLab, SonarQube, code coverage (Jacoco), Artifactory
Migration plan from IBM Change environment to Atlassian JIRA/Confluence
Design/concept of GitOps including CI/CD system supporting binary artifacts repository (Docker images)
Implementation of JIRA client web apps (microservices) with RESTful web services / REST API
Deployment and monitoring of business applications
Defining metrics, workloads and troubleshooting for DevOps
Webinar: “Global Data Platform, Cloud Computing / Cloud Native Applications”
Cloud computing overview; Amazon/AWS, Azure, GCP, OpenShift 4, Oracle Cloud
IaaS backbone for PaaS (Google App Engine, Microsoft Azure, Amazon Elastic Beanstalk), SaaS, DBaaS with Oracle EM
Cloud Foundry (PaaS) with container technology, storage servers
Build and manage AWS (networks/VPC, services, elastic load balancing, Route 53, S3 storage) with AWS CDK frameworks and services
IaaS/IaC infrastructure (Ansible, Terraform), FaaS platform/service map (application decomposition by resources and services, resource performance issues (Epsagon))
Image hub repositories, Docker/Docker Compose, application images
Container technology, orchestration with Kubernetes, Helm/Helm charts
Cloud communication, CRI protocols, processes, API server/API (REST)
Cloud native (CNCF) applications, implementation of databases, messaging/logging/tracing services, tools (Envoy, Istio, Fluentd)

Jul 2020 - Dec 2020

6 months

Munich, Germany

Implementation of DevOps CI pipeline in Java/JEE environment

Consulting company

Platform: Linux, Windows 10, on-demand/edge computing, IoT
Software: JEE OpenStack, IDE Spring STS / Spring 5, Spring Boot 2 / Spring Cloud, Jetty, CI system (Subversion / Git / GitHub / Bitbucket, Maven / Jenkins, SonarQube, Nexus), JIRA / Confluence, Groovy DevKit
Design and implementation of CI pipeline with Jenkins
Setup/configuration of environment for CI processes
DevOps/continuous delivery automation with Ansible 2, Terraform, Kubernetes, Cloud Foundry, monitoring instances with Icinga
Template development for adopting old jobs
Configuration and administration of data views with Tableau
Implementation and processing of data search algorithms on graph platform (GraphQL, Apache Spark, Neo4j)
Administration of Oracle Linux operating system

Mar 2020 - Jun 2020

4 months

DevOps + Continuous Integration and Delivery in Cloud

Consulting Company

Internal projects/webinars
Platform: Windows 10, Linux, RHEL 6/7
Software: Google Cloud Platform (App Engine for Java / Kubernetes), Amazon AWS, Cloud Foundry, Spring Boot 2/Cloud, Oracle Cloud, Kubernetes, Apache Mesos / Mesosphere Data Center / OS + Marathon Load Balancer, OpenStack, Prisma CC, Spinnaker, STS 4.5, IntelliJ, Eclipse, Ansible 2, Compose, Swarm, Cloud9, Terraform, Jenkins, Gradle / Maven / Ant, Git / GiFlow; Influx Enterprise / Influx Cloud
Best practices + webinars for:
AWS architectures including EC2, storage, networking, messaging and management services, VPN, scaling/load balancing, serverless apps
Kubernetes clustering infrastructure with Docker Swarm
deploy, manage and monitor applications on Kubernetes
container orchestration, deploying Docker images as Kubernetes pods and exposing them via services and ingresses
zero-downtime deployments, configuration and management of multiple applications
access to services and external systems in Kubernetes clusters
defining Kubernetes workloads, troubleshooting
Spring Boot 2 and Spring Cloud Platform
microservice web apps with Web MVC and RESTful web services
WebFlux with Project Reactor
managed endpoint with actuator services, monitoring with Micrometer
implementation and management of apps on Mesosphere DataCenterOS with Marathon and load balancer
migration of JEE applications to cloud platforms
native apps (virtualization) vs container technology (Docker)
container technology
Microsoft Azure cloud as a container cloud
packaging JEE applications, containerizing, Docker containers / images / networks, configuration of dockerized applications, deploying Docker images to Docker Cloud or Kubernetes
virtualization technology
Prisma Cloud security and compliance services for dynamic resources in hybrid clouds and agile environments
development of microservices with OpenStack (PaaS), front-end and back-end frameworks;
front-end (Vue2, Angular8, React/JSX, Webpack + npm / node)
back-end (IntelliJ, Spring Boot 2/Spring Cloud, Cloud Foundry)
deploying microservices on Amazon EC2
deploying apps on Google Cloud Platform
multi-cloud CD with Spinnaker on Cloud Foundry including triggers
pipelines via Git / Jenkins / Docker / Travis CI
monitoring with Stackdriver, Netflix OSS Hystrix dashboard, Turbine
monitoring and visualization of JEE applications with Icinga / Grafana, time series DB (Prometheus), ELK stack (Elasticsearch, Logstash, Kibana), Zipkin, TICK (Telegraf, InfluxDB, Chronograf, Kapacitor)

Sep 2019 - Feb 2020

6 months

Germany

Engineering DevOps CI pipeline / integration

Consulting Company

platform: Linux, Windows 10, Cloud Foundry, Ansible
software: IDEs Spring STS / Eclipse / IntelliJ, Spring 5 (Spring Boot 2 and Cloud), Apache Server / Tomcat, Jetty, CI systems (Subversion / Git / GitHub / GitLab / BitBucket, Maven / Gradle, Nexus / Artifactory, Ansible / Hiera, JaCoCo / SonarQube / Cobertura), JEE OpenStack, JSON/YAML/XML, JIRA Confluence, Red Hat OpenShift, Docker / Docker Swarm / Docker Compose, Kubernetes, Cloud Foundry, Ansible 2, Terraform (IaC), Tableau (Admin/Config), Graph/Spark/Neo4j
design and implementation of software as code for the new Jenkins CI pipeline with freestyle, pipeline and multibranch jobs, Maven central build system, linked Nexus repositories, Job DSL plugins, Groovy language for pipeline implementation, Git / Bitbucket / Gerrit / GitHub for version and control management (VCS / SCM)
migration planning for consolidating the existing not fully compatible CI pipelines into a central CI pipeline.
automation of infrastructure (PaaS) and cloud technology (IaaC) with Ansible 2, Terraform, Cloud Foundry, Kubernetes, Hiera
automation of DevOps and continuous delivery with Ansible 2, Terraform, Kubernetes, Cloud Foundry, monitoring instances

Apr 2019 - Aug 2019

5 months

Stuttgart, Germany

SAB bank outsourcing including software migration

Banking Consulting Company

platform: Windows 7/10, Linux RHEL 6/7, SLES 11, Solaris
software: JEE application servers, WebLogic 11/12, Oracle 11i/12c, JDK 7/8/11, Networker 8.1.4
migration processes / service delivery pipeline (planning and execution)
acceptance of operational software / quality gate
coordination of activities (development, data center), audit corrections
configuration and monitoring of banking business suites
management of software deliveries for roll-out
creation and management of required databases
user support for technical infrastructure questions
OIM, Oracle security procedures, authentication, encryption
design and implementation of backup & disaster recovery
data and performance analysis, tuning and monitoring
provisioning of test environments, technical documentation
maintenance of heterogeneous environment (Windows, Linux RHEL/SuSE)
execution of test-relevant processes during the outsourcing of WebLogic servers v.11/12 and Oracle 11g/12c databases

Jul 2018 - Mar 2019

9 months

Munich, Germany

Self-Driving Car / Testing Procedures

Automotive Consulting Company

platform: Robot Operating System (ROS), GitHub, SUSE OS, JBoss EAP, Windows 10
software: Robot Operating System (ROS) Medion release, ROS utility, C++ (roscpp), Python 2.7/3.4 (rospy), MediaPack, JEE (Java 8) / RESTful services, Docker / Docker Compose, Apache Server/Tomcat, JSON/XML technology
provisioning of the JEE test environment (container/Docker)
provisioning of test data for ROS simulation (MediaPack + rosbag)
integration testing, validation of JSON schemas
testing scheduled tasks, asynchronous flows
testing asynchronous flows, reactive flows
testing headers, parameters and cookies
testing Java applications with JUnit 5, JMeter, DbUnit, HtmlUnit, Mockito
testing JEE RESTful services/APIs with REST Assured
implementation of test procedures in C++/Python
testing functionality of RESTful services/APIs

Mar 2014 - Jun 2018

4 years 4 months

Munich, Germany

Electronic integration portal for the Bavarian State Ministry of Justice

Consulting Company, Unisys / virtual7

platform: SUSE SLES 11 (x86_64), Oracle Linux/RHEL, JBoss EAP (AS/WildFly), Xen hypervisor, OVM Manager/Server 2.1/3.x, VMware ESXi 4/vSphere 5/6, Windows 7/8/10
software: Oracle FMW 11-12/Oracle 11g-12c, eIP, JDK 7/8/9, IntelliJ, Eclipse 4.7 RCP, Maven 3/Gradle, Jenkins CI/CD, Git/Gerrit, SonarQube, FindBugs, PMD, IBM eBiz, Docker, VMware/vSphere, XML technology, Log4j, scan and rendition servers, Spring/STS, NetBeans, JavaScript/Ajax, JSP/JSF, AspectJ, OSGi, Apache Server/Tomcat, Beam/Hadoop, Groovy, Jython, Atom IDE
responsible for eJustice production/integration/training:
JEE integration, installation and management of production eJustice applications (about 230 base modules and services)
development, installation and management of Oracle WebLogic/SOA/BPM suites, document management systems (Alfresco DMS/IMDG/Cache Server), external subsystems (rendition and scan servers)
configuration of base interfaces and adapters to specialist applications, databases, DMS/CMIS web services, scan/rendition servers and to the global electronic communication platform (eKP)
design, build and deployment (Ant/Maven, WLST WebLogic Deployer) of the eIP software into the production Oracle VM environment with WebLogic/SOA/Oracle DBs 11g/12c
implementation of test procedures (functional/performance/stress tests) in the JEE development and integration environments
commissioning of eIP releases and execution of data migration;
health checks and performance analysis of specialist applications including databases and networks
support of JEE security frameworks with SSO (LDAP/Kerberos, AD), IAM
maintenance of self-contained systems (SCS) of the eIP
installation, migration and operation of the OS (SLES 11, Oracle Linux 7, VMware ESXi/vSphere v4/5)
installation/migration/maintenance/configuration of OVM v2.x/3.x (server/agent/manager, OVM clusterware (RAC-OVMs), server pool master, ISO file image deployment and reconfiguration of OVM images, management of OVM repositories, OVM templates and servers including utility servers)
updating and tuning OS kernel parameters of nodes/VMs of the STMJ team during problem solving
creation and management of databases, user support for technical questions
Oracle security procedures, authentication, encryption,
design and implementation of backup & disaster recovery procedures
data and performance analysis, tuning and monitoring
monitoring with Stackdriver, Netflix OSS Hystrix dashboard, Turbine
monitoring and visualization of JEE applications with Icinga/Grafana, time series DB (Prometheus), ELK stack (Elasticsearch, Logstash, Kibana) with Zipkin, TICK (Telegraf, InfluxDB, Chronograf, Kapacitor)
provision of technical documentation
eIP training environment (production-like environment)
virtualization, cloning, automation and management with VMware/vSphere tools, Puppet, Ansible;
implementing container technology with Docker/Java Kubernetes (orchestration + management);
design and implementation of REST web services for content subsystems

Jul 2013 - Dec 2013

6 months

Munich, Germany

Load and Performance Testing for .NET4 Application

Consulting Company, TÜV Munich

Platform: Windows 7, Windows 2008 R2, VMware/ESXi
Software: .NET 4.0/4.5, Entity Framework, SYNC Frameworks, MinG/C#, VS2010/VC/C#, Silk Performer v10, ITSM Suite, JDK, Wireshark v1.5, Riverbed
Coordinating and communicating testing activities for staging and major releases
Developing test plans and test cases
Designing and implementing test chains with MS VS2010 Coded UI Automation, Silk Performer/SilkTest v10
Implementing relevant test functions in C# and Python
Integrating test modules
Load and performance analysis including reporting
Network performance analysis using Riverbed/Wireshark
Release software implementation for the TÜV environment

Jan 2013 - Apr 2013

4 months

Munich, Germany

Redesign/Refactoring of the J2EE web application

Consulting Company/Automotive

Platform: Linux SuSE 11.2 / Windows 7
Software: WebSphere 6.x, GlassFish 2/3, Java SDK, Eclipse 3.5 RC4, NetBeans v6/7, Oracle JDeveloper 11gR2/DB 11g/Test Suite, Ant/Maven/SVN with continuous integration (Hudson/Jenkins), Selenium, JUnit, JMeter
Concept for migrating legacy data
Creating/extending test units (Selenium, JUnit, JMeter)
Identifying performance issues of the eDocument web application (in-house workflow developments)
Refactoring the eDocument application for the delivery platform
Interface adjustments (XML/XSD/cXML format)
Automating the build process (Ant/Maven)
Visualizing analysis results
Developing processes and metrics for quality gates

May 2012 - Nov 2012

7 months

Munich, Germany

Tool implementation for SUT (software migration)

Consulting Company

Platform: RHEL 6, SuSE 11.2, Windows 7, VMware, Solaris 10/11
Software: Java SDK, Eclipse v3/4, NetBeans v7, Oracle JDeveloper 11gR2/DB 11g/Test Suite, agile processes (Scrum) with continuous integration/source version control/build management, Archiva, JUnit, JMeter, Selenium, Sonatype
Refactoring existing Unix Java software applications/modules to Linux RHEL 6
Migrating Oracle applications (Forms/Reports) to Fusion web application technology stack using the ADF framework and JDeveloper 11
ADF proof of concept/app build features (objects/views/associations), verification of application requirements
Quality assurance in the software development process, testing procedures especially performance/load tests
Automating (creating/extending) test units for DMS, CMS, SAP subsystems using JUnit/JMeter/Selenium, LoadRunner/VuGen
Creating and implementing test concepts, managing and optimizing test processes
Automating the build process/plugins/distributed builds
Visualizing test and analysis results
Developing processes and metrics for quality gates
Virtualizing the environment using VMware/ESXi/vCenter/vSphere/vCloud/View Desktop

Jan 2012 - Apr 2012

4 months

Munich, Germany

Software release acceptance for BMC ARS project tool development based on HP QC/LoadRunner/VuGen

BMW

Platform: Sun Solaris/Linux/Windows
Software: ARS 7.5, ITSM Suite 7.6.x, MinG/C++, VS2010/VC, JDK 6/7
Developing and implementing test concepts and strategies for problem management and investigation in Remedy ARS/ITSM Suite (mid tier/web interface)
Planning test phases (component, integration, system, acceptance testing, operations)
Designing and implementing test scripts with HP LoadRunner/VuGen software
Executing tests for relevant processes such as incident and change management, as well as problem investigation
Implementing relevant test functions in C/C++/Java/Python and integrating these test modules into TestController
System testing (performance and load testing) and acceptance testing in a heterogeneous environment (Solaris/Linux/Windows OS)

Jun 2011 - Dec 2011

7 months

Nuremberg, Germany

Rollout - software release management (test system manager/application integrator)

Public sector

Platform: Sun Solaris/Linux/Windows
Software: J2EE AS, WebLogic 10, BMC Remedy ARS 7.5
Management and optimization of test processes (service roll-out)
Provision of the test software environment
Coordinating test team activities (development, integration, data center)
Testing and acceptance of operational software / quality gate
Implementing, configuring, administering, and managing Oracle WebLogic 10.3.4/11.2 domains, including managed servers in a clustered environment with SuSE 10/11.2 OS
Implementing, configuring, and managing test software tools for HA cluster environments with WebLogic
Installing, configuring, and monitoring the OFM SOA 11g Suite
Internal support for Oracle OFM SOA 11g Suite
Executing test-related processes such as problem investigation, incident & change management (ARS-Remedy v7.5/ITSM Suite/CMDB)
Maintaining a heterogeneous environment (Sun/Linux SuSE/Windows)

Jan 2011 - Mar 2011

3 months

Cologne, Germany

Truck Toll (BAG/T-Systems International) deployment of EMC Documentum and CYA tools

BAG Köln

Platform: Sun Solaris/Linux/Windows, NetApp Storage/MetroCluster
Software: SunOS/Solaris, HP-UX, IBM-AIX, Windows, WLS/SOA Suite, OracleDB 8i/11g, JSP/JSF, XML, CYD, EMC Documentum
Implemented CYA software tools for Documentum 5.3/6.2
Implemented and supported DFS and web services (CTS/DTS/ADTS/SCS/SDS/CIS)
Customized and managed DocApps and virtual documents
Implemented search and indexing procedures
Implemented monitoring tools for Nagios/Oracle AQ
Reviewed installed software MSDR12 (German toll system release 12)
Troubleshot toll applications (DMS/KonB including Content Server/Oracle 11g DB)

Jul 2003 - Dec 2010

7 years 6 months

Munich, Germany

Truck Toll Germany (Electronic Toll Collect) implementation, testing and maintenance

T-Systems

Platform: Sun/Linux/Windows, NetApp Storage/Metro Cluster
Software: SunOS/Solaris, HP-UX, IBM-AIX, Windows, WebLogic/SOA Suite, OracleDB 8i/9i/10g/11g, WebSphere Suite, Eclipse IDE, NetBeans IDE, JS/Ajax, JSP/JSF, Java, C/C++, Ruby, Perl, Python, HTML, XHTML, CSS, RSS, ASF Apache AS/Tomcat, Remedy ARS, analysis tools, Tivoli, Nagios, HP OpenView, CA Best One, CA UC4, SNMP, TCP/IP, networking with Ethernet and NFS, X.25, NIS/NIS+, DNS, Samba SMB, SVN
Implemented ETC software packages for BAG
Project lead for enterprise backup systems within the HSR (hardware-software refresh) project
Implemented enterprise storage backup for SAN/NAS/FS and databases using RMAN/NetBackup and snapshot software
Subproject leader for printing subsystem migration
Coordinated activities (development, data center), audits/audit corrections, configuration and monitoring of banking business suites
Managed software deliveries for roll-out
Created and managed databases, supported users with technical issues
Implemented OIM, Oracle security procedures, authentication, encryption
Designed and implemented backup & disaster recovery
Performed data and performance analysis, tuning and monitoring
Provided test environments and technical documentation
Designed and supervised implementation of BAG and TC clusters with Sun Cluster SC 3.2 and Data Services
Supported software upgrades for MSDR12
Implemented EMC Documentum, related web services and interfaces to SAP/BW/DW, CRM
Developed DMS business processes with DFC/API/BOF/WDK (Webtop) and HTTP/WebDAV protocols
Provided Documentum Content Server/web services support for UUDI, WSDL, SOAP, XML-RPC and REST protocols
Verified SOA implementation (PeopleSoft CRM with ESB/BPEL and OOD/UML2/Java)
Created master and contingency plans for software refresh
Planned migration of SAP R/3 & SAP BW to new SAP R/3 4.6D release
Created, prioritized and estimated necessary changes for SAP R/3 migration
Coordinated teams (CMS, SAP-Base, Unix/Windows), provided technical support to CMS team
Backed up and restored SAP R/3 systems for migration
Supported SAP R/3 migration
Implemented and verified SAP interfaces (iDocs/iDoc adapters, ArchiveLink, RFC) to CRM, DMS and relevant subsystems
Implemented SAP job chains
Updated and tuned kernel parameters of SAP nodes, implemented web services and related interfaces
Reviewed SAP functionality (server processes, permissions and client access)
Performed SAP performance checks (applications, databases and networks)
Delivered final report of SAP R/3
Commissioned production SAP environment
Developed monitoring tools for Tivoli/UC4/Nagios/Oracle Advanced Queues
Designed and implemented relevant Oracle PL/SQL packages, security packages for selected applications, reports and application management tools with Perl, Python, awk and shell scripts
Implemented enterprise application frameworks

Sep 2002 - Jun 2003

10 months

Frankfurt, Germany

Development of secure services framework for international data exchange

Deutsche Bank

Software: Solaris and AIX OS, Oracle 8i database, Java, J2EE, JReport, Motif, PL/SQL, XML, HTTP, Perl, Python, AS400, IBM DB2
Designed and developed enterprise services based on J2EE/web technologies for international data exchange
Implemented reports for CMS, DA and OA systems
Developed support tools for enterprise services
Conducted production software acceptance/quality gate
Coordinated audit activities/audit corrections
Configured and monitored banking business suites/derivatives
Managed software deliveries for roll-out
Implemented DB2 security procedures, authentication
Designed and implemented backup & disaster recovery
Performed data and performance analysis, tuning and monitoring
Provided technical documentation

Jul 1998 - Jun 2002

4 years

Bamberg, Germany

Maintenance of T-Systems infrastructures (DKS)

T-Systems Enterprise

Software: SunOS/Solaris 2.x, HP-UX, IBM-AIX, RDBMS Oracle 8i, MS SQL, ARS Remedy, analysis tools, SNMP, TCP/IP, SNTP, NIS, DNS, VxVM Veritas Volume Manager, Logical VM, EMC Storage Data/Centera/Symmetrix Manager, Java, XML, HTML, JSP, JSF, Apache/Tomcat WebServer
Supported the decentralized core system (DKS) based on Solaris and HP-UX HA cluster solutions
Supported enterprise backup systems with HiBack/Legato Networker/Oracle RMAN and Informix Ontape
Implemented enterprise storage backup for SAN/NAS and Oracle/Informix/Versant databases using industry appliance snapshots
Planned migration of the DKS platform ("core business software") from Solaris to HP-UX
Created DKS migration master plan (MS Project slides)
Created and processed necessary changes (Remedy ARS)
Coordinated teams (SAP-Base, Unix/Windows), provided technical support to CMS team
Backed up and restored SAP systems for migration
Supported teams in SAP R/3 migration
Implemented SAP interfaces (RFC)
Implemented SAP job chains with ABAP
Updated and tuned kernel parameters of SAP nodes, configured software
Upgraded SAP R/3 and SAP BW (new software)
Performed performance checks for DKS applications/databases and network implementations, delivered final report
Backed up SAP system (business copy procedure) in DKS SAP environment
Contributed to design and implementation of Oracle PL/SQL packages, security packages, reports and tools with Perl, shell scripts and appliance software
Supported business applications: T-VPN in HA environment based on Versant OODB and PCB (Oracle applications with interfaces to SAP/BW)
Customized IBM Tivoli and BMC Patrol monitoring tools

Aug 1997 - Jun 1998

11 months

Frankfurt, Germany

Development of counterparty knowledge base CDB

Dresdner Bank

Software: Sun Solaris 2.5.x, Sybase DBServer 11.5, DS Informix 7.2x, DB2 databases, ODBC, Informix CLI v.2.5, PowerBuilder, SDesignor, SQL/ESQL, C/C++, Tivoli, Patrol, Continuous/CM, Windows NT
Developed incremental load for CDB (counterparty database)
Migrated CDB incremental from NT 4.0 to Solaris 5.8
Verified code for CDB PowerBuilder implementation

Skills

Software Engineering (Devops/cloud)

Deployment Automation
Jenkins Ci/cd Pipeline/multibranching Based On Maven | Gradle With Git/bitbucket/gerrit/github Source Code/build Management And Nexus/artifactory As Repositories
Pipeline With Jenkins And Gitlab Ci + Aws Ci Deploy + Kubernetes / Docker, Openshift
Ci Deployment Pipeline Building With Dsl Plugin In Groovy Including Ansible, Puppet

Cloud Technology

Google Gcp / Kubernetes, Openshift 3/4, Azure, Amazon Aws, Ibm Cloud, Apache Open Cloud-stack, Spring 5/6, Spring Boot 2/3
Native And Container Technology With Docker Swarm, Docker Compose, Docker Cloud, Kubernetes, Kubernetes Operator Framework, Micro- And Cloud Services
Integration Of Jee App Into Gcp, Azure, Aws With Kubernetes And Derivatives, Aws Lambda
Cncf / Implementation Of Dbs, Messaging Systems, Logging/tracing And Monitoring Services
Administration Of Multi-cluster Container Platform Based On Kubernetes, Orchestration Of Deployments With Argocd And Container Security (Service Meshes) With Istio

Jee Integration Including Databases (Rdb, Nosql Including Big Data)

Design Of High-level Integration Architectures Based On Olnx/ovm With Weblogic, Spring Boot/spring (Mvc, Web, Security, Data, Cloud), Aspectj, Jboss, Struts, Hibernate/jpa, Restful/openapi, Yaml And Json Frameworks
Data Processing On Graph Platforms, Kafka/akka Including Spark
Design Of Ha Db Architectures (Including Interfaces And Db Views To External Resources) Based On Oracle, Postgresql, Mssql, Mongodb, Dynamodb, Cassandra, Tableau Including Firebase, Derby, Redis, Neo4j, Hbase And Influxdb / Tsdb
Development Of A Test Suite Based On Java, Junit, Dbunit, Jmeter, Mocks, Xml, Spring Boot Including Api Documentation

Automation Of Business Streamline Processes With Ai Software

Sagemaker, Azure Openai, Ai Assistants (Intellij Idea), Github Actions / Copilot
Ann With Tensorflow2 And Colab

Industries

Government Agencies, Banks, Insurance Companies, Industry

Practical Expert Knowledge And Hands-on Experience In

Java Ci/cd Development With Jenkins Ci Pipelines (Build Process - Maven/gradle; Vcs/scm - Git, Bitbucket, Github, Gitlab; Code Coverage - Jacoco; Code Analysis - Sonarqube, Cucumber; Artifacts Repository - Nexus, Artifactory)
Testing - Junit, Dbunit, Htmlunit, Mocks Frameworks
Shell Scripting (Bash, Perl, Python, Yaml, Xml)
Provisioning Of Complex “Software Delivery Platform” (Cloud Source Repositories, Ha Kubernetes Clusters, Deployment And Scaling Of Cloud-native (Cn) Applications In Gke)
Implementation Of “End-to-end Continuous Delivery” Workflows With Docker/container Technology (Build, Test, Push Images To Registry, Deploy)
Building And Modernizing Aws Cloud Infrastructure Architectures And Frameworks With Aws Cdk Including Ec2, Ecs, Eks, Elb, Web Services (Jetty, Nginx, Weblogic, Tomcat/apache), Scaling And Implementing Serverless Applications
Implementation Of Azure Cloud Infrastructure (Services, Policies, Management Groups, Resource Manager), Self-service Portals, Devops Services And Ci/cd Pipeline, Administration Of Azure Cloud Infrastructure And Managed Databases (Ms-sql, Cosmosdb, Postgresql)
Full Stack Development, Java Jee/web In Agile Environment (Scrum, Kanban), Implementation Of Microservices With Frameworks
Frontend (Node.js, Vue 2, Angular 8, React/jsx, Bootstrap 4, Webpack)
Backend (Spring Boot 2 / Spring Cloud, Docker Swarm, Kubernetes)
Several Years Of Experience Integrating Java Ee Based On Oracle Software Components Including Ovm Manager/server, Rac-ovm, Oem, Ofm Stack (Oracle Soa Suite, Osb, Weblogic Server 11g/12c), Designing High-level Integration Architectures (Virtualization/clustering, Containerization, Dockerization) With Weblogic, Spring, Aspectj, Jboss/wildfly, Struts, Hibernate/jpa, Restful/openapi And Json Frameworks
Supporting The Following Java/jee Frameworks And Toolkits: Sts, Spring 5/6, Spring Boot 2/3, Spring Data/cloud/web/security, Intellij Idea, Eclipse, Netbeans, Jdeveloper, Open Liberty, Jboss Eap/wildfly, Java Sdks, Glassfish/payara, Apache Tomcat/beams, Jetbrains Tools, Osgi, Aop, Jsf, Rxjava, Vue.js, Angularjs, Node.js, Bootstrap, Express, Flux, Redux, Guice, Thymeleaf

Testing Procedures In Jee Client/server Environment

Testing Restful Services And Apis With Postman
Using Tools/frameworks Such As Rest-assured, Eclipse/codemr, Silk Performer, Pmd, Loadrunner/vugen, Selenium, Jasmine, Easymock, Mocks/mockito, Junit/dbunit/htmlunit, Jmeter
Test Automation (Terraform, Ansible, Chef, Puppet)

Cloud Native (Cncf)

Application, Deployment, Implementation Of Databases, Java Messaging Systems, Logging/tracing And Monitoring Services

Automation Of Business Streamline Processes With Ai Support

Sagemaker, Azure Openai, Ai Assistants (Intellij Idea, Discord/zapier, Github Copilot Bots)
Machine Learning Frameworks (Models, Training Pipeline, Deployment)
Monitoring Workloads With Prometheus And Grafana
Multilayer Ann With Tensorflow2 And Colab For Regression/classification