Frontend Software Engineer
Summary
Build and maintain web-based operator interfaces for mission-critical Air Traffic Control systems in a collaborative, safety-focused team. Core stack is TypeScript and React, with automated testing (Vitest/Jest, Playwright/Cypress), CI/CD tooling, and optionally mapping, data-viz, and real-time (WebSockets/Electron) work.
We are looking for a Software Engineer to build and maintain the web-based operator interfaces of mission-critical Air Traffic Control systems. You will work in a collaborative team environment, solving complex technical problems while ensuring that our systems meet the highest standards of safety, usability and reliability.
As an ideal candidate
- You have professional experience in frontend software development and a strong understanding of the full software development lifecycle.
- You approach complex problems with a pragmatic, solution-oriented mindset and are comfortable working in safety-critical environments where quality and reliability are paramount.
- You are self-motivated and collaborative, you value knowledge sharing, and you actively contribute to continuous improvement — both in code and in development processes.
- You are able to translate technical concepts into clear outcomes and work effectively within multidisciplinary teams to deliver robust, high-quality systems.
Who we are
Tern Systems is an established and trusted provider of Air Traffic Management solutions, and operates in a competitive, regulated industry. With over 70 employees, we have nearly 30 years of experience in successful deliveries to customers in Europe and Asia.
What we offer
We offer an international work environment that fosters personal growth, supports training and continuing education, and a family-friendly work environment with flexible work hours. You will be working in close collaboration with colleagues in our headquarters in Iceland and given regular opportunities to travel to Iceland.
Additional information
Applications must be submitted in English, and all applications are stored in accordance with the Icelandic Public Archives Act.
The position requires you to work at our Warsaw office in Poland. We do not offer relocation packages at this point.
To find out more about us, including information about our recruitment process, please visit If you have any further enquiries, contact us at hr@tern.is .
Professional Requirements
- University degree in Software Engineering, Computer Science, or a related field
- Professional experience building production web frontends with TypeScript and React (or a comparable component framework)
- Strong command of modern JavaScript/TypeScript, HTML5, CSS, and browser fundamentals (rendering, state, async, debugging with browser devtools)
- Experience writing automated tests — unit and end-to-end (e.g. Vitest/Jest and Playwright/Cypress)
- Experience with CI/CD pipelines and development tooling (e.g., Jenkins, GitLab)
- Excellent communication and collaboration skills within cross-functional teams
- English language proficiency, both written and verbal
Preferred Qualifications
- At least 3 years of professional experience in software development is preferred
- Familiarity with modern build tooling (Vite/Webpack) and modular or plugin-based frontend architectures
- Experience with state management at scale (Redux Toolkit or similar) and a component library (e.g. Mantine, MUI, Chakra)
- Experience with data-visualization or mapping libraries (D3, MapLibre, Leaflet)
- Experience with real-time data (WebSockets) and/or desktop delivery via Electron
- A strong eye for accessibility, usability, and performance in operator-facing UIs
- A background in the ATM/ATC domain is a plus
- Solid problem-solving skills and an ability to work independently
- A user-centric approach combined with the ability and willingness to learn