Java Architect for GIS project (m/f/d)

Hays • Vienna, Vienna, Austria • Posted June 17, 2026

Location Vienna, Vienna

Job Type PART_TIME

Category Computer Occupations

Posted June 17, 2026

Java Architect for GIS project 
(m/f/d)
 Freiberuflich für ein Projekt in Teilauslastung Vienna Start date: 08/26 Reference number: 880114/1 
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 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 (, Arc42, DACI)
Act as a technical authority and sparring partner for architects and engineering teams
Conduct code and solution reviews and provide clear technical guidanc...
            

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