Senior Java Backend Engineer

• Work mode – Lithuania. Onsite, 2 days per week in the Vilnus office.

• Assignment type - B2B – 46 EUR/h.

• Contract length – Until the end of December 2026, with the possibility of extension in early 2027.

• Start – 19.11.2026

• Language – English.

• Industry – banking.

• Recruitment process – 1 interview with the client.

• Workload - Full time (40 hours per week).

Summary

The main function of the role is to contribute to the development of a cloud-native payments system that enhances digital transformation initiatives.

Main Responsibilities

• Designing and developing scalable cloud-native services.

• Building microservice-based applications using Java.

• Contributing to a new payments platform.

• Working with event-driven architecture and messaging technologies.

• Writing clean, testable, and well-structured code.

• Creating and improving automated tests, including unit and integration tests.

• Collaborating closely with developers, architects, testers, product owners, and other teams.

Key Requirements

• Strong experience with Java and related development tools.

• Good understanding of object-oriented programming principles.

• Knowledge of design patterns and software engineering best practices.

• Experience with service-oriented or cloud-native systems.

• Experience with messaging systems such as Apache Kafka, RabbitMQ or similar.

• Strong focus on test automation, clean code, and maintainability.

• Ability to take ownership and deliver in a structured manner.

• Good communication skills with upper-intermediate English proficiency or higher.

Nice to Have

• Experience with event-driven microservice architecture.

• Familiarity with Apache Kafka, especially Kafka Streams.

• Experience with Kubernetes resource configuration.

• Experience with automated testing, including unit and integration testing.

• Knowledge of CI/CD pipelines and GitOps practices.

• Familiarity with observability tools such as Grafana, Prometheus, or Kibana.

• Background in financial services, payment systems, or other business-critical platforms.

Other Details

• Location: On-site in Vilnius, Lithuania.

• Team Structure: Works closely with other teams.

• Focus: Implementing functional and non-functional requirements without production support responsibilities.