Frontend Software Engineer

Tern Systems is an established and trusted provider of Air Traffic Management solutions operating in a competitive, regulated industry. The company has over 70 employees and nearly 30 years of experience delivering solutions to customers in Europe and Asia. The role involves building and maintaining web-based operator interfaces for mission-critical Air Traffic Control systems, with collaboration across teams including colleagues in Iceland.

• University degree in Software Engineering, Computer Science, or a related field
• Professional experience building production web frontends with TypeScript and React or comparable component frameworks
• Strong command of modern JavaScript, TypeScript, HTML5, CSS, and browser fundamentals
• Experience writing automated tests including unit and end-to-end testing (e.g., Vitest, Jest, Playwright, Cypress)
• Experience with CI/CD pipelines and development tooling such as Jenkins and GitLab
• Excellent communication and collaboration skills in cross-functional teams
• English language proficiency, both written and verbal

Nice to have:

• At least 3 years of professional software development experience
• Familiarity with modern build tooling like Vite or Webpack and modular or plugin-based frontend architectures
• Experience with state management at scale (e.g., Redux Toolkit) and component libraries (Mantine, MUI, Chakra)
• Experience with data-visualization or mapping libraries (D3, MapLibre, Leaflet)
• Experience with real-time data (WebSockets) and desktop delivery via Electron
• Strong eye for accessibility, usability, and performance in operator-facing UIs
• Background in ATM/ATC domain is a plus
• Solid problem-solving skills and ability to work independently
• User-centric approach and willingness to learn

• Design, develop, and maintain safety-critical software solutions
• Collaborate with cross-functional teams to define requirements and deliver features
• Build responsive, high-performance user interfaces and reusable components for real-time operational displays
• Write clean, maintainable, and well-documented code
• Review code and contribute to shared engineering standards and best practices
• Test, debug, and improve software throughout the development lifecycle
• Support deployment, monitoring, and ongoing improvement of production systems
• Assist with writing operational and technical documentation

• Applications must be submitted in English
• Applications are stored according to the Icelandic Public Archives Act
• The position requires working at the Warsaw office in Poland
• No relocation packages are offered