Senior Frontend Developer

About Us We are an ETH Zurich spin-off with the aim of transforming transportation planning and operation through the introduction of digital twins. Transcality develops next-generation web-app solutions to streamline complex engineering and planning processes. Our digital transportation twins are offered as a self-service SaaS solution for engineering offices and public authorities in traffic and construction planning at the local, regional, and national levels. They help improve the efficiency, safety, and sustainability of our cities. We are a diverse, international team pushing the boundaries of traffic modeling: driven by ideas, open in our approach, working hand-in-hand with partners, and building smarter solutions for a greener tomorrow. Above all, we prioritize being a supportive and inspiring workplace where individuals can grow both personally and professionally. Position: (Senior) Frontend Developer Location: Germany or Switzerland (with flexible remote options) Duration: Part-time/full-time Position Overview We are seeking a Frontend Developer with a passion for building geospatial and performance-driven web applications. You will be building cutting-edge tools for digital twin platforms in transportation, with a strong focus on interactive maps, traffic simulations, and urban planning applications. This role is ideal for someone who enjoys solving complex challenges in the browser, optimizing large-scale datasets, and creating intuitive user interfaces that empower our clients to shape the mobility of tomorrow. Tasks Build and maintain high-performance map interfaces using and React Integrate Deckgl and MapLibre for advanced geospatial visualizations Work with DuckDB-wasm and SQLRooms for in-browser querying of large (Geo)Parquet datasets Implement road network editing tools Optimize performance for large transportation datasets Collaborate with UI/UX design team to implement and maintain the intuitive design Collaborate with backend engineers to integrate REST APIs and data pipelines Write clean, maintainable, and well-documented code Requirements Bring 3+ years of experience in front-end focused software development Proficiency in and modern React (hooks, state management like Zustand) Knowledge of TypeScript and scalable frontend architecture Experience with geospatial visualization (Deckgl, MapLibre, GeoParquet/GeoArrow) Strong understanding of SQL, DuckDB, and spatial queries Experience with performance optimization for browser-based heavy data apps Familiarity with WebGL rendering pipelines and geospatial concepts Strong problem-solving skills and ability to work independently Experience with version control tools (Git) Familiarity with CI/CD pipelines (GitHub Actions) Benefits Why join us? We are a young and dynamic team and are passionate about impactful technology and continuous growth while valuing work-life balance, offering a workplace that's both inspiring and rewarding We offer competitive compensation and growth opportunities You get the chance to develop cutting-edge solutions with real-world impact We set value in on-site work but guarantee flexible work arrangements We make sure you get the support you need for continuous learning and professional development You have the opportunity to shape our product and technological strategy We are proud to be an equal opportunity employer, dedicated to fostering a fair and inclusive work environment. Our recruitment, advancement, and retention practices are free from discrimination, ensuring equal opportunities for all. We strongly encourage applications from individuals traditionally underrepresented in the tech industry.