Senior Java Developer

Project/Client: Fintech
Location: Lithuania
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
  
  📩 Ready to Join?
  We look forward to receiving your application and welcoming you to our team!