Senior Java Developer

Project/Client: Fintech

Location: Lithuania, hybrid model (3 days in the office)

Start Date: ASAP

Duration: 12 months

Language: English

Role Overview:

We are looking for a Senior Java Developer to join a fintech project focused on scalable backend systems, data integration, and event-driven architecture. The role involves developing Java / Spring Boot microservices and working with data streaming and/or Data Warehouse solutions.

Key Responsibilities:

• Design, develop, and maintain backend services using Java and Spring Boot
• Build and support microservices and event-driven solutions
• Work with messaging and data streaming tools such as Kafka, RabbitMQ, or similar technologies
• Contribute to data integration, CDC, ETL/ELT, and/or DWH-related initiatives
• Work with relational databases such as PostgreSQL, MS SQL Server, or similar
• Collaborate with engineering, data, DevOps, and business teams

Must-Have Requirements:

• Strong hands-on experience with Java and Spring Boot
• Proven experience with microservices architecture
• Hands-on experience with Kafka, RabbitMQ, or similar messaging/streaming technologies
• Experience with data streaming and/or Data Warehouse / DWH projects
• Good knowledge of relational databases (PostgreSQL, MS SQL Server, or similar)

• Fluent English

Nice to Have:

• Previous experience in fintech, banking, or financial systems

  What we offer

  • Model: B2B contract with Bonapolia - one contract, one monthly invoice
  • Rate: negotiated per candidate seniority and client budget
  • Payment: monthly invoice, paid on the same schedule the client pays us (usually 30 days)
  • Contract written under your country's law
  • We handle the client-side paperwork: MSA, NDA, invoicing
  🏢 About Bonapolia Bonapolia is a family-owned IT staff augmentation team based in Lisbon. We build engineering teams for product companies and IT consultancies across Europe and the US.

  More at bonapolia.com

  📩 Ready to Join?

  We look forward to receiving your application and welcoming you to our team!