Expert Java Microservices Engineer – Payments

Transform payment processing — engineer resilient, cloud-ready microservices that power the next generation of financial services!

Krakow-based opportunity with a hybrid work model, including up to 3 remote days per week.

As an Expert Java Microservices Engineer – Payments, you will be working for our client, a financial services organization focused on modernizing payment processing capabilities. You will help deliver a lean, reusable payment processing engine that supports future-state architecture, cloud adoption, high availability, and resilient next-generation payment services.

Your main responsibilities:

• Deliver engineering expertise for future-state payment processing architecture.
• Design, code, test, debug, and document highly available and resilient software services.
• Create high-quality code artefacts, robust test scripts, and solutions that meet quality gates.
• Support the modernization of existing payment systems through cloud-based technology adoption.
• Define software delivery standards and lead by example within the engineering team.
• Analyse and resolve technical and business issues, including architectural and development blockers.
• Partner with DevOps teams to enable automated infrastructure delivery, DevSecOps value streams, and CI/CD pipelines.
• Review systems and provide architecture guidance to ensure operational integrity and alignment with global standards.

You're ideal for this role if you have:

• At least 8 years of applied experience as an API Engineer.
• More than 8 years of programming experience in Java.
• More than 5 years of experience developing back-end microservices applications.
• Strong expertise in API design and the creation of architectural artefacts, including gap analyses, low-level designs, and data models.
• Expertise in distributed systems design, microservices, and Spring Boot.
• Experience with Kafka, Docker, Kubernetes, and service mesh technologies.
• Expertise in JVM tuning and diagnostics for performance optimization.
• A Bachelor’s degree in Computer Science, Engineering, or a related field.

It is a strong plus if you have:

• Strong SQL coding abilities.
• Experience working in a financial institution, particularly in payments.
• Experience with Go and Rust programming languages.
• Experience with Splunk, Grafana, Prometheus, Jaeger, Kiali, OpenTelemetry, cloud networking, IAM, Linux, storage, load balancing, or Kubernetes CNI.

Language Required for the role: Fluent English, both written and verbal.

Eligibility for the role: Only candidates with an existing legal right to work in Europe will be considered for this role.

#MAKEYourCareerBETTER

Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

Tech stack

• Java
• Microservices
• API Design
• Spring Boot
• Apache Kafka
• Kubernetes
• Docker
• JVM tuning
• SQL
• GO / RUST