Senior Java/Kotlin Engineer (Freelancer)

Employer · Supercharge

Software developerApplications developerFull-time

Budapest, Czuczor utca 2.

We're looking for a Senior Java/Kotlin Freelancer with at least 3 years of Kotlin backend development experience to join a renewable energy trading project. The solution connects asset data and trading operations on a single platform, enabling end-to-end automation across forecasting, trading, and dispatch. You'll work with Kotlin and Spring Boot in a full Supercharge project, with design, project management, architecture, and tech leadership provided in-house. The team works in Hungarian, while specifications are in English, and there is no direct client interaction.

Tasks

  • Supporting the development of a stable and scalable Kotlin and Spring Boot back-end from the ground up
  • Crafting code that adheres to the highest industry standards while ensuring seamless integration with our Cl tools
  • Collaborating effectively within a dynamic team environment on exciting, cutting-edge tech initiatives while working closely with fellow engineers and supporting Tech Leads and Architects
  • Bringing an architectural perspective to the planning process

Posted Oct 21, 2026 · Updated 13 days ago · 0 views