Senior API Engineer Java

• 8+ years of experience with Java and as an API Engineer
• 5+ years in microservices-based back-end development (Spring Boot, caching, middleware, security/authentication)
• Hands-on experience with Kafka, Docker, Kubernetes, and service mesh
• Experience with monitoring and observability tools (e.g. Splunk, Grafana, Prometheus, Jaeger, OpenTelemetry)
• Cloud experience: VPC, firewalls, IAM, sizing and costing
• Solid knowledge of Linux, networking, and load balancing
• Excellent English
• A degree in Computer Science, Engineering, or a related field

• Prestigious position at one of the world’s largest banks
• Stable, long-term projects
• Competitive salary with a B2B contract
• Hybrid work (6 days per month from the office in Cracow)
• Private healthcare and multisport card
• Personal growth and development opportunities with the possibility to rotate between projects

,[ Design and build APIs and microservices for the new payment engine, Create architectural artefacts (low-level designs, data models, gap analysis), Ensure high availability, resilience, and performance, including JVM tuning, Modernise the existing payment estate and drive cloud adoption, Work with the DevOps team on CI/CD and infrastructure automation, Provide technical guidance and mentoring to the team] Requirements: Java, API, Microservices, Kafka, Cloud, Linux, Rust, SQL Additionally: Sport subscription, Private healthcare, Free coffee, Bike parking, Playroom, Shower, Free beverages, Modern office, No dress code.