Senior JAVA Developer for BA's client (B2B contract)
Baltic Amadeus is a technology partner helping organisationsbuild and scale their IT solutions. With a team of 300+ IT professionals, we turn complexity into systems that actually work.
Our expertisespans the full IT lifecycle, from IT consulting and custom software developmenttomobileapp development,mobile banking, cyber security,includingpenetration testing,and web portal development. We create internal systems and customer-facing platforms, including mobile applications, self-service, eCommerce, and banking solutions.
Our team has proven experience in industries where reliability and compliance are critical, such as banking and finance, public sector, telecommunications, logistics, and insurance.
With 37+ years in the industry, we partner with clients across the globe, including Fortune 500 and Forbes Global 2000 companies, helping them achieve measurable business results.
Project/Client: Banking
Location: Baltic States
Start Date: ASAP
Duration: Until 2027-02-28
Seniority: Senior
Language: English
Role Overview:
Baltic Amadeus’ client is looking for a Senior Java Developer under a B2B (business-to-business) contract to be part of the Core Banking team that modernises and supports mission-critical services for a leading banking platform. You will deliver new features, reduce technical debt, and ensure regulatory compliance using Java 11/17+, Spring Boot, REST APIs, and microservices on highly available, enterprise-scale systems. Expertise with Kafka, Oracle Database, and event-driven architectures is key to maintaining resilient integrations with digital channels.
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
Hourly Rate: up to 55 EUR (Gross). If you have different expectations, please let us know - we are open to discussing compensation based on your skills and experience.