Thomas G.
Continuing Education
Experience
Apr 2023 - Present
2 years 5 monthsContinuing Education
- Testcontainers, Docker Compose v2, Kubernetes
- Spring Boot 3.x with Java 17 and Jakarta EE
- MongoDB with Java 17 and Python 3
- Microservices with Python and FastAPI
- GitHub Actions with TypeScript
- OpenAPI 3, Swagger UI, OpenAPI Code Generator
- Gradle tasks and plugins with Groovy
- AWS Lambda functions and AWS Serverless Application Model (SAM)
- Kubernetes with Helm
- Helidon with MicroProfile, Postman
- Payara Micro with MicroProfile and Testcontainers
- Quarkus
- Spring WebFlux and reactive programming
- OpenLiberty
- GitLab CI/CD (certificate)
May 2022 - Mar 2023
11 monthsLandshut, Germany
Lorem ipsum dolor sit amet
State Leadership Academy for Nutrition, Agriculture and Forestry (FüAk)
- Maintenance and further development of the web application iBalis
- Java 11, Tomcat, JPA with Hibernate, Wicket
- Build pipeline with Bamboo
- VCS with Git, Bitbucket
- Quality gate with SonarQube
- PostgreSQL and PostGIS for geodata
- Atlassian tools, communication with WebEx, Jabber
Jan 2022 - Feb 2022
2 months Lorem ipsum dolor sit amet
Bavarian Insurance Chamber (VKB)
- JFrog Artifactory Repository Manager.
Jan 2021 - Dec 2021
1 year Lorem ipsum dolor sit amet
AXA Group AG
- Microservices with SOAP and REST interfaces
- OpenShift 3 and 4
- Jenkins pipelines with Groovy
- Spring Security
- OpenAPI
- OpenFeign as a REST client
- Cucumber
Oct 2020 - Dec 2020
3 months Lorem ipsum dolor sit amet
Cognizant Technology Solutions GmbH for Telefónica O2
- Amazon Cloud (AWS) with ElastiCache, Lambda functions, ECS, EventBridge, CloudWatch
- Redis cache with Lettuce as the Java implementation
- Payara standalone and in a Docker container
- Terraform
- Java 8, Groovy
- Project language mostly English
Nov 2018 - Sep 2020
1 year 11 monthsPersonal training
- Microservices workshop with Eberhard Wolff (W-JAX 2018)
- Follow-up work on Spring Boot, Netflix stack, Docker, Kubernetes
- Integration of databases (MariaDB, PostgreSQL) into the above microservices using docker network
- Amazon Web Services (AWS) up to certification
- Amazon Elastic Container Service (ECS)
- Refreshed knowledge of Camunda
- Kafka with Avro for serialization
- Quarkus as a micro framework
- Microstream as a new, alternative persistence strategy
- Vue.js with HTML5 and CSS as the current frontend technology (but only as a supplement to my portfolio, not as a core skill)
Mar 2018 - Oct 2018
8 monthsSoftware Developer and Consultant
Cognizant Technology Solutions GmbH for Telefónica o2
- Further development of a middleware that distributes information between different frontends (REST) and backends (SOAP).
- Technologies: Kafka, Avro, JavaEE 7, JavaSE 8, WebLogic 12.2, Oracle 11g, Oracle Coherence, Oracle Advanced Queuing (JMS), JBoss Drools, Spring 2.5, EclipseLink, JAXB, Mockito, PL/SQL, JAX-RS, JAX-WS.
- Worked in a SCRUM process with Jira.
Jun 2017 - Feb 2018
9 months Lorem ipsum dolor sit amet
TNG Technology Consulting GmbH for Telefónica o2
- Developed a backend that, among other things, is accessed by the Telefónica middleware.
- JavaEE 7, JavaSE 7, WebLogic 12.2
- Build tools Ant and Gradle
- CI with Jenkins
- Scripts with Python, Apache web server configuration using mod_qos
- Vagrant, provisioning with Salt
- Docker and Kubernetes as a platform for ELK
- Behavior Driven Development (BDD) with JGiven
- Libraries such as Google Guava and AssertJ
- Atlassian tools (Jira, Confluence, Fisheye, Crucible, HipChat)
- Used Scrum process, partly in English
Feb 2016 - Dec 2016
11 monthsSoftware Developer and Consultant
Cognizant Technology Solutions GmbH for Telefónica o2
- Further development of a middleware that distributes information between different frontends (REST) and backends (SOAP).
- Migration from WebLogic 10.3 to WebLogic 12.2.
- Implementation of asynchronous processes (concurrency).
- Technologies: JavaEE 7, JavaSE 8, WebLogic 12.2, Oracle 11g, Oracle Coherence, Oracle Advanced Queuing (JMS), JBoss Drools, Spring 2.5, EclipseLink, JAXB, Mockito, PL/SQL, JAX-RS, JAX-WS.
- Worked in a SCRUM process with Jira.
Aug 2014 - Jun 2015
11 monthsSoftware Developer and Consultant
Cognizant SetCon GmbH for Telefónica o2
- Development of a middleware that distributes information between different frontends (REST) and backends (SOAP).
- WebLogic 10.3
- Oracle 11g database, Oracle Coherence (cache), Oracle Advanced Queuing (JMS)
- JBoss Drools (BRMS)
- JavaSE 7, Spring 2.5, EclipseLink, JAXB, Mockito, PL/SQL, JAX-RS, JAX-WS
- SCRUM, Jira
Jan 2013 - Jan 2014
1 year 1 monthMunich, Germany
Software Developer with Partial Responsibility for Architecture Issues
Siemens AG
- Development with JavaEE 6 full stack on JBoss EAP 6.2, especially Hibernate 4, CDI and EJB web services.
- Database: Oracle 11g.
- Architecture: SOA.
- Use of Apache POI.
- Test-driven development (TDD) with Arquillian.
- Working at distributed locations with daily conference calls, without agile processes.
- Topic: stock plans, accounting.
Mar 2012 - Oct 2012
8 monthsIsmaning, Germany
Backend software developer and Product Owner
msg systems AG
Backend software developer for a complex application.
Model-driven development with EMF and Xtext.
Platform: IBM WebSphere and IBM DB2.
Agile approach following SCRUM.
Product Owner in a SCRUM team with members from Germany and Romania (offshore).
Evaluating specifications, estimating costs for change requests, regular contact with the end customer (including travel).
Oct 2011 - Jan 2012
4 monthsMunich, Germany
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Swiss Life
- Participation in a complex migration project.
- Oracle SQL and PL/SQL on large data sets (>100 million rows per table).
- Java development against an ESB, SOAP web services with Apache CXF.
- Use of Sparx Systems Enterprise Architect, SoapUI.
- Analysis of COBOL code for re-implementation in Java.
- Basic use of Grails.
Mar 2011 - Jun 2011
4 monthsMunich, Germany
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metafinanz GmbH
- Design and implementation of a web application for Allianz AG.
- Technologies: Tomcat 6, Oracle 11g, Spring 3, Spring Security 3, JPA 2 (Hibernate 3.6), JSF with RichFaces 3.3.
Jul 2010 - Oct 2010
4 monthsWürzburg, Germany
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Minova GmbH
- Design and implementation of a Java enterprise application.
- Technologies: JBoss 5.1, MySQL 5.1, Ubuntu Linux, EJB 3, JSF 1.2, JBossWS.
Jul 2000 - Feb 2009
8 years 8 monthsRimpar, Germany
Technical project manager and team leader
empolis GmbH (a part of arvato)
- Technical project manager and team leader in enterprise content management for the sigmalink and e:CLS systems.
- Developing project plans and effort estimates.
- Leading project teams of up to six people.
- Writing functional and technical specifications, often for multiple projects in parallel.
- Software installations and upgrades (including Oracle databases) domestically and internationally.
- Intensive customer contact, including travel and on-site workshops in German and English.
Summary
I have been working as a Java Enterprise application developer since mid-2000, both standalone and in various application servers and web servers. I have learned many programming and especially testing methods. Today I am particularly interested in microservices and Docker networks, also in the cloud with Kubernetes. Developing (automated) tests is a special focus of mine.
Languages
German
NativeEnglish
AdvancedFrench
IntermediateEducation
Julius Maximilian University
Diploma · Physics · Würzburg, Germany
Certifications & licenses
GitLab Certified CI/CD Associate
GitLab
AWS Certified Solutions Architect – Associate
AWS
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