Karl-heinz G. - DevOps Engineer / JEE-Developer - Asset Optimization Portal

Karlsruhe, Germany

Experience

Sep 2023 - Dec 2024

1 year 4 months

DevOps Engineer / JEE-Developer - Asset Optimization Portal

EnBW

Role: DevOps Engineer / JEE Developer

Further development of an existing microservice architecture (REST) for asset model management and runtime environment in the cloud.

Java development (backend) in the SCRUM team
Technologies/Tools:**
Java (Spring Boot/Security)
PostgreSQL
Docker
AWS services (Lambda, Cognito, ECS, SQS)
IntelliJ

May 2022 - May 2023

1 year 1 month

DevOps Engineer / JEE-Developer - Implementation of the Online Access Act (OZG)

HZD – Hessische Zentrale für Digitalisierung

Role: DevOps Engineer / JEE Developer

Development of REST-based microservices to implement specialized procedures/citizen services as part of the OZG.

Java development (backend) in the SCRUM team
Infrastructure maintenance GitLab/K8s
Technologies/Tools:**
Java (Quarkus)
GitLab
Oracle
Kubernetes / Docker
KeyCloak (OAuth2)
Eclipse, Swagger, Postman

Sep 2018 - Nov 2021

3 years 3 months

DevOps Engineer / JEE-Developer - Asset Optimization Portal

EnBW

Role: DevOps Engineer / JEE Developer

Web application for managing power plants (assets) and their schedules, fully document-oriented, time series and master data management as a REST service. Containerized (Docker) and deployed on the K8s cluster (on-prem).

Java development (backend/frontend) in the SCRUM team
Jenkins CI/CD pipeline
Setup/management of Kubernetes
MongoDB administration
Technologies:**
Java (Spring Boot/Data/REST/Security, Bootstrap, Thymeleaf, JUnit)
MongoDB
Jenkins CI/CD
Git
Maven
Kubernetes / Docker
Eclipse

Jun 2018 - Aug 2018

3 months

DevOps Engineer / JEE-Developer - POC for Technology Decision

EnBW

Role: DevOps Engineer / JEE Developer

Development of a reactive CRUD prototype in microservice architecture for technology decision-making for a web portal.

Java development in the SCRUM team
Setup/management of Kubernetes
Technologies:**
Java (Spring Boot/Reactive Web/Data Reactive)
MongoDB
React
Kubernetes / Docker
Kafka

Jul 2017 - May 2018

11 months

DevOps Engineer / JEE-Developer - Power Plant Event Notifications (EEX)

EnBW

Role: DevOps Engineer / JEE Developer

Generation and deployment of current power plant notifications in the cloud (AWS) as a static website.

Java development in the SCRUM team
Infrastructure setup/management AWS
Technologies:**
Java SE
Amazon S3
AWS Lambda
Amazon DynamoDB
AWS API Gateway
Serverless Framework
AWS CodeCommit
IAM roles and policies
Eclipse

Feb 2015 - Jun 2017

2 years 5 months

DevOps Engineer / JEE-Developer - Pricepilot

EnBW

Role: DevOps Engineer / JEE-Developer

Energy price management with a graphical interface (fat client) and Oracle as the persistence layer.

Java development (backend/frontend) in a Scrum team
Oracle administration
Technologies:**
Java (Spring, Swing, JPA, JUnit)
Oracle 11g
PL-SQL (scripts, stored procedures)
SVN
Maven
Jenkins
Eclipse
Bash

Jan 2014 - Dec 2014

1 year

DevOps Engineer / JEE-Developer - Monitoring and analysis of worldwide network node availability

Daimler

Role: DevOps Engineer / JEE-Developer

Fetching worldwide network node data at 15-minute intervals; persisting and graphically presenting the data in a fat client.

Java development
Oracle administration
Technologies:**
Java (Spring, Swing, JPA, JUnit)
Oracle 11g
IBM WebSphere
SVN
Maven
Jenkins
Eclipse

May 2012 - Nov 2013

1 year 7 months

Java-Developer - Framework for XML-based dynamic building of Swing components in an ERP front end

Command AG

Role: Java-Developer

The vendor's ERP system runs on an IBM AS/400. Business data is delivered to a Java fat client in XML format. On the client, the GUI is built dynamically and populated with the delivered data.

Java development
Technologies:**
Java (Spring, Swing, RMI)
SVN
Maven
Jenkins
Eclipse

May 2011 - Feb 2012

10 months

Java-Developer - POC for JSF framework / CRUD prototype development

HPV

Role: Java-Developer

For the client's end-customer portal (insurance), a JSF component framework was evaluated, followed by prototype implementation. Candidates: PrimeFaces, RichFaces, ICEFaces.