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October 13, 2026

Lead Java System Engineer

Senior • Remote

Warsaw, Poland

Quick Facts

  • Role: Lead Java System Engineer (Java Technical Lead)

Description

You will provide technical leadership for the end-to-end delivery of a new Java microservice platform replacing a legacy system. You will mentor and coach team members while working in an Agile environment to implement an event-based, service-oriented architecture using Kafka and container technologies. The solution must follow enterprise engineering and architecture standards and remain consistent across teams and platforms.

Responsibilities

  • Build and contribute to a new IT team, providing technical leadership

  • Deliver a coherent end-to-end solution meeting functional and non-functional requirements

  • Lead migration of a legacy application to a new event-based/service-oriented architecture

  • Collaborate with the Solution Architect, Engineering Lead, and other stakeholders

  • Ensure compliance with enterprise engineering and architecture standards

  • Maintain end-to-end delivery consistency across platforms and teams (e.g., run solution walkthroughs)

  • Ensure design and development follow established guidelines and standards

  • Perform hands-on development and provide technical guidance, coaching, and mentoring

Requirements

  • Prior technical lead experience with strong solutions design and development capability

  • Hands-on experience with Core Java and frameworks such as Spring Boot

  • Line management experience

  • Experience developing Java services/microservices

  • Experience with event-driven architecture and messaging technologies (Kafka, MQ)

  • Container technology experience (Docker, Kubernetes)

  • Object-oriented design

  • Experience developing and deploying on Unix/Linux

  • Profiling and performance tuning experience

  • Testing experience (JUnit, Mockito, Cucumber, etc.)

  • Agile experience (Scrum, Kanban)

  • Database experience (SQL and/or NoSQL)

  • Strong technical leadership, organization, communication, problem-solving, analytical skills, and attention to detail

  • Willingness to learn and share knowledge; results-oriented mindset for tight deadlines

Benefits

  • Competitive salary and comprehensive benefits

  • International learning and development environment with a strong emphasis on knowledge sharing and training

  • Hybrid working model (office presence 8 days per month, with remote working)

  • Inclusive culture focused on diversity and being a Great Place to Work

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