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Salary: GBP 51,000 - 86,000 / annual
Hudl is hiring a Software Engineer II to join the Athlete Performance group, a cross-functional product team focused on building cutting-edge solutions that directly impact how athletes and sports teams train, compete, and achieve peak performance.
You will focus on building high-performance mobile applications and core data services across iOS and Android. Your work will include building and maintaining hardware-agnostic communication interfaces to stream live sensor and optical tracking data to the cloud and mobile clients. You'll translate complex physical and biomechanical data into clear, digestible metrics that support real-time decision-making for elite coaches, athletes, and medical teams.
Key responsibilities:
- Collaborate with cross-functional teams (Engineering, QA, Product, Design, Scrum) to deliver feature-rich mobile applications and backend services
- Take ownership of specific features, defining low-latency communication interfaces across the stack and building user-facing application features
- Write high-quality code, conduct code reviews, and solve well-defined technical problems using modern mobile and cloud development best practices
- Work with senior engineers and tech leads to refine technical architecture skills, learning to navigate trade-offs in system performance, real-time data streaming, and application responsiveness
- Participate in rapid iteration cycles, with deployments happening hundreds of times daily across the Engineering team
Workplace: You'll be expected to work more days in-office than remote, with flexibility to coordinate your specific in-office schedule with your team. Applicants should be within commuting distance of London.
Requirements:
- Hands-on experience developing native or cross-platform mobile applications, ideally with React Native (iOS and Android)
- Experience working with different API styles and communication patterns for streaming data across mobile clients and backend systems
- Strong collaborative mindset; you understand that problem-solving is a team effort and enjoy sharing knowledge
- User-focused approach; excited to build intuitive interfaces that translate complex physical or optical sensor data into digestible information
- Solid core engineering skills and willingness to dive into mobile frameworks, time-series data streams, or cloud architecture as needed
Nice-to-haves:
- Hands-on experience with modern cloud infrastructure (AWS/GCP), microservice architectures, time-series databases, and CI/CD deployment pipelines
- Background working with real-time video, wearable devices, or streaming optical/sensor data, ideally within sports technology or performance analytics
- Experience with mobile build and release pipelines (GitHub Actions), distribution platforms (TestFlight, Firebase App Distribution), and testing frameworks such as Jest and Detox
