Java Architect for GIS project (m/f/d)
Responsibilities
- Assess and challenge the existing microservices architecture (service boundaries, APIs, data ownership)
- Identify architectural risks, bottlenecks, and anti-patterns and define improvement measures
- Review and optimize Java-based APIs with a focus on scalability, resilience, and quality
- Evaluate event-driven data flows and system integrations (latency, idempotency, reliability)
- Support and validate the decoupling of legacy Oracle/JDBC dependencies
- Create, refine, and maintain architecture documentation (e.g., Arc42, DACI)
- Act as a technical authority and sparring partner for architects and engineering teams
- Conduct code and solution reviews and provide clear technical guidance
- Advise developers and enforce best practices and quality standards
Profile
- Senior Backend Engineer and/or Solution Architect with a strong architectural mindset
- Deep expertise in Java and Spring Boot within microservices environments
- Proven experience in architecture review, validation, and optimization
- Strong full-stack understanding without active day-to-day coding
- Experience in code reviews, technical leadership, and guiding engineering teams
- Solid knowledge of relational databases (Oracle, PostgreSQL)
- Experience with event-driven architectures (e.g., Kafka, outbox pattern)
- Familiarity with cloud-native environments and Kubernetes
- Strong analytical skills with the ability to challenge and improve existing solutions
- Familiarity with GIS / spatial systems is a plus
- Experience with geospatial APIs (e.g., routing, geocoding) is a plus
Benefits
- International client
- Partly remote
About Hays
IT is and always has been our core business that laid the foundation for Hays' success. We are the biggest privately owned IT recruitment agency in Germany and offer the best jobs for every career level – whether you are interested in vacancies in agile SMEs or international DAX groups. Hays masters the entire IT job spectrum, from support to software architecture or digitalisation – thanks to our broad portfolio, we have something for everyone. In the last decades, we were able to support numerous IT experts with choosing the right path for a successful career, positioning ourselves as their lifelong partner. Our highly specialised consultants can cater to your every wish and expectation and will prepare you for interviews and contract negotiations. Give it a try and learn what the market has to offer – our services are free of charge, non-binding and discreet! We look forward to hearing from you.
Staffing process for freelance specialists
- Analysis of qualifications
- Telephone or personal interview
- Contact with customers
- Contract with Hays
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1. Analysis of qualifications
We carry out a detailed analysis of your technical qualifications on the basis of your CV, your application documents and your profile.
Contact at Hays
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