
Senior Java Backend Developer
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- 52222 Stolberg (Rheinland)
- National
- de | en
- 27.02.2025
Kurzvorstellung
Qualifikationen
Projekt‐ & Berufserfahrung
6/2023 – 2/2025
Tätigkeitsbeschreibung
- Requirements engineering
- Solution design (ETL Orchestration & data-warehouse platform)
- Evaluation of different technical approaches and OLAP query engines
- Protocol design and implementation of worker-based approach
- implementation of ETL process orchestration and execution and data storage
- testing, reviews, documentation
Tech Stack:
Java, Spring Boot, Kotlin, GraalVM Native Image, DuckDB, Postgres, Keycloak, OpenTelemetry, TUS, Testcontainers, Protobuf, Parquet Files, Apache Arrow, Helm Chart, Kubernetes, minIO
Hibernate (Framework), Backend Entwickler, Big Data, Business Intelligence (BI), Continuous Delivery, Data Warehousing, Datenbankentwicklung, Distributed Computing Environment, ETL, Java-Entwickler, Java (allg.), Kubernetes, Postgresql, Representational State Transfer (REST), Spring Framework, SQL, UML, Workflows
6/2019 – 4/2023
Tätigkeitsbeschreibung
- Design & implementation of a declarative, DSL-driven approach to generate HMIs including the machine communication
- ModbusTCP-based machine communication
Backend Tech Stack: Java, Spring Boot, Maven, Eclipse Xtext, ModbusTCP, MQTT, Reactive Streams (Project Reactor), Websockets
Continuous Delivery, Java-Entwickler, Software Architecture, Software engineering / -technik, Advanced Message Queuing Protocol, Backend Entwickler, Eclipse Modeling Framework, Java (allg.), Spring Framework
3/2018 – 8/2019
Tätigkeitsbeschreibung
- Implementation of platform to optimize license usage across cloud providers
- aggregation, enrichment and historization of usage data
- rule-based recommendations, cost calculation and optimizations
Backend Tech Stack: Java, Spring Boot, Maven, Drools, Elasticsearch, RabbitMQ, Groovy, Netflix Conductor
Hibernate (Framework), Kubernetes, Backend Entwickler, Business Intelligence (BI), Drools, Elasticsearch, Java-Entwickler, Java (allg.), Java Message Service, Software Architecture, Software engineering / -technik, Spring Framework, Workflows
3/2018 – offen
Tätigkeitsbeschreibung
- Design of Cloud-native microservice architecture
- Mentoring & Reviews
- Design implementation and documentation (OpenAPI) of Restful APIs
- Implementation of business logic and persistence
- Integration into AWS ecosystem (EKS, S3, Recognition, Lambda)
- Integration of several third party services (DeepL, ChatGPT, Mapbox)
- Integration Testing
Backend Tech Stack: Java, Spring Boot, JPA, Hibernate, Hibernate Search, Maven, RabbitMQ, Postgis, Redis, Spring Security, Keycloak, Spring Authorization Server, OpenAPI, Mapbox, AWS Recognition, S3, Firebase, ChatGPT, DeepL, Testcontainers, Helm Chart, Kubernetes
Hibernate (Framework), Amazon Web Services (AWS), Backend Entwickler, Cloud Spezialist, Java (allg.), Java Message Service, Kubernetes, Lead Developer, Postgresql, Representational State Transfer (REST), Software Architecture, Software engineering / -technik, Spring Framework
6/2015 – 6/2018
Tätigkeitsbeschreibung
- Design and implementation of backend for an instant messenger for live-sport events
Tech Stack: Java, JEE, JSF, JPA, Hibernate, Maven, Openfire XMPP, APNS, RabbitMQ, Groovy, MariaDB, MongoDB
Docker, Backend Entwickler, Continuous Delivery, Hibernate (Java), J2EE, Java-Entwickler, Java (allg.), Jenkins, Software Architecture, Software engineering / -technik
Ausbildung
RWTH Aachen
Aachen
RWTH Aachen
Aachen
Persönliche Daten
- Deutsch (Muttersprache)
- Englisch (Fließend)
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