Routing Engineer (C++/Java/Rust) 80% - 100%

• Designing and building a highly customisable engine, with the choice to extend an existing open-source project (like OTP, Graphhopper, Valhalla) or build our own to meet unique product needs.
• Designing clean, scalable routing APIs and collaborating with backend and mobile engineers to ensure they are robust and easy to use.
• Contributing across the stack by applying your engineering skills to our backend services or geospatial data processing pipelines.
• Creating the foundation for our AI-powered personalisation, where edge weights (speed, cost, preference) are dynamically adjusted for each user.
• Implementing complex multi-modal routing logic that can seamlessly combine walking, public transport, and ride-sharing into a single, optimised journey.
• Over time solving for modern transport challenges, such as building Electric Vehicle (EV) routing that intelligently incorporates charging stops, battery levels, and station availability.
• Developing and optimising core routing algorithms like A*, Contraction Hierarchies (CH), or other speed-up techniques for continental-scale networks.
• Building the testing and verification harness that keeps routing correct such as golden-route regression suites, invariant checks ( triangle inequality, symmetry where expected), and benchmarks that catch performance regressions as the graph and algorithms evolve.

• A portfolio or GitHub profile showcasing strong projects in algorithms, data structures, or systems programming.
• Deep proficiency in a high-performance language, specifically C++, Java or Rust.
• Proven experience implementing and working with graph algorithms, particularly for routing ( , Dijkstra, A*, CH, Isochrones).
• Familiarity with the challenges of routing on real-world data like OpenStreetMap (OSM).
• Experience in API design and a solid understanding of how to build scalable, low-latency web services.
• A "T-shaped" or "tree-shaped" mentality, with a genuine interest in contributing to different parts of the product.
• 3+ years experience in a professional environment with a demonstrable record of shipping production software
• A rigorous approach to correctness and testing, with experience verifying algorithmic output where the "right answer" is non-trivial ( regression testing, property-based testing, or validating against a reference implementation).

• A collaborative and supportive team with short decision-making paths.
• Exciting and meaningful projects using modern technologies.
• The opportunity to contribute your ideas and take ownership of your work.
• Competitive compensation and opportunities for professional growth.
• A culture that values learning, knowledge sharing, and continuous improvement.
• Grow with a young, ambitious company that values innovation, initiative, and ownership.

Have we sparked your interest? If so, please send your application to We look forward to meeting you soon. If you have any questions, please do not hesitate to contact Ms Manuela Unger, Head of Human Resources.

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