Senior Java Developer | Baltic States and Poland Citizen (remote) | Contract

Team: Backend

Location: Remote

Commitment: Remote

Workplace Type: remote

Key Responsibilities:

Design, build, and maintain Java microservices with Spring Boot and JPA/Hibernate.
Develop and integrate REST/SOAP services and Kafka-based messaging solutions.
Optimize SQL queries and ensure performance on Oracle Database.
Contribute to core banking transformation and legacy-modernization initiatives.
Collaborate in Agile/Scrum teams, providing technical leadership and code reviews.
Ensure high availability, resilience, and regulatory compliance across distributed systems.

Must-Have Requirements:

5+ years of enterprise Java development (Java 11/17+).
Deep Spring Framework / Spring Boot expertise.
Proven experience with REST APIs, microservices, and event-driven architectures.
Hands-on with JPA/Hibernate, Maven or Gradle.
Proficiency in Kafka (or similar messaging) and Oracle Database performance tuning.
Solid grasp of core banking architecture, integration patterns, and high-availability design.
Experience in production-critical financial environments and Agile/Scrum delivery.
Fluent English plus strong analytical and stakeholder-communication skills.

Nice to Have:

Exposure to core banking platforms such as Oracle FLEXCUBE, Temenos T24, Finacle, Mambu, or Thought Machine.
Experience with Git, CI/CD pipelines, Kubernetes/OpenShift, and AWS / Azure / GCP.
Knowledge of Domain-Driven Design (DDD), automated testing, and ISO 20022 / SWIFT standards.
Background in core banking migration or transformation programs.