Principal Java Engineer (Backend Platform)

Join our team as a Principal Java Engineer, where you will be responsible for the backend architecture, data pipelines, and API layer of a new sports technology product. You will be a core contributor to a new backend platform being built from scratch, focusing on low-latency data pipelines, event-driven processing, cloud infrastructure, data transformation, and API development. You will also provide technical direction for frontend development and collaborate closely with computer vision/data science engineers. This role offers flexible and remote working, generous annual leave, and various company benefits.

• Contribuer à l'architecture backend, aux pipelines de données et à la couche API d'un nouveau produit technologique sportif.
• Participer à la conception et à la construction de services backend et d'API (REST/WebSocket) soutenant l'ingestion, la transformation et la livraison des données.
• Collaborer étroitement avec les ingénieurs en vision par ordinateur et en science des données pour définir et consommer des contrats de données.
• This role sits within a small, fast-moving product engineering team and requires someone comfortable owning end-to-end technical delivery across the stack, with backend and data work as the primary focus
• Strong backend engineering background with production experience in Java (required)
• Experience with cloud infrastructure and event-driven architectures (e.g. Kafka or equivalent streaming technology)
• Comfortable with ambiguity: this is a build-phase product with evolving scope and infrastructure decisions still being finalised
• Working knowledge of a modern frontend framework such as React/TypeScript, sufficient to review and direct frontend work rather than deliver it independently
• Experience designing and evolving API contracts (OpenAPI or similar) in a fast-moving, still-evolving product environment
• Demonstrated experience building low-latency, high-throughput systems - this is a core requirement, not a nice-to-have
• Strong communication skills - able to work directly with product and cross-functional stakeholders, and to mentor or direct engineers outside their own core discipline
• Familiarity with modern cloud identity and access management approaches (e.g. AWS Cognito or equivalent) is a plus