09/21/2026 updated
100 % available
Lead Java Developer
Danzig, Poland
Only remote
Master's degree in ITJava (Programming Language)Kotlin
Hello!
I am a Senior Java Engineer with 9 years of experience, currently working at DHL. I specialise in designing, developing, deploying, and maintaining scalable applications within international teams.
Throughout my career, I have contributed to the success of numerous projects by using modern technologies and best practices, including:
- Backend Development: Building microservices using Java 21, Spring Boot and designing REST APIs.
- Cloud Technologies: Creating scalable solutions on platforms such as Kubernetes, PCF, AWS.
- Database and Messaging: Proficient with SQL/NoSQL databases, RabbitMQ, Apache Kafka.
- Frontend : Angular
- DevOps: Leading DevOps processes with Jenkins and GitHub Actions, and implementing monitoring and alerting setups using Prometheus, Kibana, Grafana, and Elasticsearch.
Experience
Professional experience5 - 10 years
Freelancer since2017
Languages
GermanFluentEnglishFluentPolishNative speaker
Project history
Developed a highly available Fedex backend ecosystem using reactive programming with Java, Kotlin, Spring Boot and WebFlux. Owned the whole backend project lifecycle as a lead developer in 2 projects, working closely with the software architect. Owned DevOps processes and supported production issues.
Lead developer in a remote team of 5. Built a new Booking System for Lufthansa, Swiss, Austrian and Brussels Airlines, having a lead backend solution design role. Designed reactive high-throughput apps with Spring Boot and Webflux.