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Kotlin Desktop Engineer with MacOS (Senior) @ VirtusLab
  • Kielce
Kotlin Desktop Engineer with MacOS (Senior) @ VirtusLab
Kielce, Kielce, Swietokrzyskie, Polska
VirtusLab
2. 11. 2025
Informacje o stanowisku

We are #VLteam – tech enthusiasts constantly striving for growth. The team is our foundation, that’s why we care the most about the friendly atmosphere, a lot of self-development opportunities and good working conditions. Trust and autonomy are two essential qualities that drive our performance. We simply believe in the idea of ​​“measuring outcomes, not hours”. Join us & see for yourself!

About the role

We’re looking for an engineer to join a team working on a widely used desktop application for developers, built with Kotlin and Kotlin Compose. You’ll be working on a multi-platform application, so experience with desktop environments is essential. You’ll also need to handle multithreading, work with security enclaves in operating systems, and integrate seamlessly with web services. If you’re excited about creating top-notch developer tools, we’d love to hear from you! We are looking for a passionate, self-driven developer who is open to working on a web application that manages developer tooling. The client is the leader within developer tooling space with excellent engineering culture.

Project
Toolbox

Project scope

The project builds a multi-platform desktop application that helps large organizations manage developer tools such as IDEs and plugins. It focuses on delivering a seamless user experience, enabling version control and configuration management at scale.

Tech stack

Kotlin, Spring, React, Redux, PostgreSQL, S3, TeamCity (for CI), Space (for code reviews)

Your future team

The team consists of 4 engineers on our side and over 5 on the client side, collaborating closely through code reviews. They bring strong experience in developer tooling and maintain high engineering standards across a distributed setup.

A few perks of being with us

  • Building tech community
  • Flexible hybrid work model
  • Home office reimbursement
  • Language lessons
  • MyBenefit points
  • Private healthcare
  • Training Package
  • Virtusity / in-house training
  • And a lot more!



What we expect in general

  • A big plus on this role: hands-on macOS desktop experience – codesigning/notarization, AppKit/Swift/Objective-C interop, and performance tuning on Apple silicon
  • Strong Kotlin and Java 17+ skills, willingness to learn new technologies
  • Understanding of asynchronous systems, Kotlin Coroutines knowledge is a plus
  • Understanding the specifics of creating desktop application
  • Motivation to contribute to technical improvements across teams, collaborate with architects, and start bottom-up initiatives to improve the whole data platform
  • Fluency in English, with good communication skills and a proactive problem-solving attitude
  • Self-motivation, ability to manage tasks independently

We are #VLteam – tech enthusiasts constantly striving for growth. The team is our foundation, that’s why we care the most about the friendly atmosphere, a lot of self-development opportunities and good working conditions. Trust and autonomy are two essential qualities that drive our performance. We simply believe in the idea of ​​“measuring outcomes, not hours”. Join us & see for yourself!

About the role

We’re looking for an engineer to join a team working on a widely used desktop application for developers, built with Kotlin and Kotlin Compose. You’ll be working on a multi-platform application, so experience with desktop environments is essential. You’ll also need to handle multithreading, work with security enclaves in operating systems, and integrate seamlessly with web services. If you’re excited about creating top-notch developer tools, we’d love to hear from you! We are looking for a passionate, self-driven developer who is open to working on a web application that manages developer tooling. The client is the leader within developer tooling space with excellent engineering culture.

Project
Toolbox

Project scope

The project builds a multi-platform desktop application that helps large organizations manage developer tools such as IDEs and plugins. It focuses on delivering a seamless user experience, enabling version control and configuration management at scale.

Tech stack

Kotlin, Spring, React, Redux, PostgreSQL, S3, TeamCity (for CI), Space (for code reviews)

Your future team

The team consists of 4 engineers on our side and over 5 on the client side, collaborating closely through code reviews. They bring strong experience in developer tooling and maintain high engineering standards across a distributed setup.

A few perks of being with us

  • Building tech community
  • Flexible hybrid work model
  • Home office reimbursement
  • Language lessons
  • MyBenefit points
  • Private healthcare
  • Training Package
  • Virtusity / in-house training
  • And a lot more!


,[ Requirements: AppKit, Swift, Objective-C, Performance tuning, Kotlin, Java, Kotlin Coroutines Additionally: Building tech community, Flexible hybrid work model, Home office reimbursement, Language lessons, MyBenefit points, Training Package, Virtusity / in-house training.

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