Senior Python Engineer (Embedded project)

About the role

We are looking for an experienced Backend Developer / Test Developer with strong Python skills to join the team and contribute to the development of a common web-based project layer for roadside measurement systems.

The goal of the stream is to develop a reusable HMI and API architecture that can serve multiple roadside products and measurement systems, with only minor adaptations and extensions required for different platforms.

The HMI will provide a modern, touch-friendly, web-based user interface with harmonized workflows and a recognizable design across products. The solution will be designed to support different application types and measurement systems while maintaining scalable client performance, including under bandwidth-constrained conditions.

The role has a strong focus on the backend/API layer and automated testing, ensuring reliable data flow from HMI interactions through the API Gateway and service layer to the ROS2 services (ROS2 knowledge is not mandatory for this position).

Key Responsibilities:

- Develop and maintain backend modules, utilities, and automated testing solutions using Python.

- Develop and maintain automated API and integration test suites covering application-layer endpoints.

- Test and validate GraphQL and RESTful/gRPC APIs, including schemas, queries, mutations, subscriptions, and service interactions.

- Verify end-to-end data flow from HMI user interactions through the API Gateway / Service Layer to ROS2 services (ROS2 knowledge is not mandatory for this position).

- Validate API contracts, data structures, and schema consistency across system components.

- Develop integration, regression, and contract tests to ensure reliable communication between HMI and backend services.

- Integrate automated tests into CI/CD pipelines, working closely with DevOps and development teams.

- Perform root-cause analysis of system failures at the protocol, logging, and container levels, rather than limiting investigations to UI-level issues.

- Work with embedded systems and target hardware in client office/lab environments, including via VPN or remote access.

- Investigate communication and integration issues involving ROS middleware, embedded systems, and roadside hardware.

- Work closely with Lead Frontend Developers to ensure reliable integration between the web-based HMI and backend services.

- Collaborate with DevOps to integrate API sanity checks, regression testing, and automated validation into Jenkins / GitLab CI pipelines.

- Support the development of a modular architecture that can be reused across multiple measurement systems with minimal adaptations.

- Contribute to troubleshooting and continuous improvement of the overall HMI/API solution.

Python & Backend Development

- Strong professional experience with Python.

- Experience developing backend modules, utilities, and automation frameworks.