Staff Full Stack Engineer

• Play a pivotal role in driving the technical success of the Runna app within the App Team. • Work across multiple squads providing architectural direction, ensuring engineering excellence, and enabling successful delivery of features. • Be a multiplier for the engineering team by mentoring developers, improving processes, and guiding the evolution of systems as we scale.

• Have 5+ years of professional experience in software engineering with a focus on technical leadership and driving projects end-to-end. • Have deep expertise in TypeScript/JavaScript with a strong foundation across the full stack. • Have a proven track record of leading the architecture and successful delivery of large-scale React-Native mobile applications in a production environment. • Have experience working in AWS cloud environments with familiarity with serverless architectures such as Lambda, API Gateway, DynamoDB, and AppSync. • Be skilled in defining and delivering features from initial architecture and design through to release, testing, and production support. • Be comfortable stepping outside your core expertise to solve problems across the stack from frontend to cloud infrastructure. • Be able to thrive in a highly skilled, fast-paced engineering team. • Have proven ability to mentor engineers, support team growth, and guide complex projects from design to release. • Be a proactive advocate for modern engineering practices including iterative development, continuous deployment, test automation, knowledge sharing, pair programming, and shared code ownership. • Have experience with React Native at scale in performance-sensitive or offline-first applications. • Be comfortable with Infrastructure as Code tooling like Terraform, CDK, or CloudFormation. • Be able to thrive in autonomous roles, taking ownership without heavy direction.

• Have hands-on experience with SwiftUI or native mobile development. • Be confident working with and improving CI/CD pipelines, release cycles, and deployment processes. • Have contributed to open-source communities through code, issues, testing, or documentation.

• Lead the architectural design and technical strategy across multiple product teams, ensuring scalable, secure, and maintainable solutions. • Drive the end-to-end delivery of key initiatives, working hands-on to build, test, and ship features across the full stack including mobile, backend, and integrations. • Coach and support engineers by providing technical guidance, mentorship, and code reviews without creating bottlenecks. • Collaborate with Product, Design, and Engineering Leads to define the best solutions for user experience, balancing speed, quality, and long-term technical goals. • Champion developer productivity by improving CI/CD pipeline, tooling, and internal workflows to accelerate delivery and reduce friction. • Own the release process and support a culture of reliable, continuous deployment while enabling teams to ship confidently and independently. • Maintain and grow a high-performing engineering culture based on ownership, knowledge-sharing, and continuous improvement.

Runna is one of the most exciting fitness startups in the UK right now, and the Strava acquisition only makes the opportunity bigger. In under four years from launch, Dom and Ben built Runna from a website selling personalised PDF training plans to a globally rated running coaching app, a finalist for Apple's iPhone App of the Year, and ultimately an acquisition by the world's largest fitness community. The team has grown to over 150 people across London and Boston, and Strava has publicly committed to investing further in growing both the team and the product. What stands out on Glassdoor (4.9/5 from 31 reviews, with 100% of employees recommending it) is how consistently people praise the culture, the kindness of their colleagues, and the quality of the leadership. Benefits are genuinely strong for a company this size: private health insurance, enhanced parental leave (up to 20 weeks fully paid), Strava equity, a smartwatch as you pass probation, 25 days holiday plus bank holidays, and a paid hour each week to go for a run during work hours. They operate a flexi-hybrid model, typically three days a week in their Vauxhall office. The team runs bi-weekly together, and Workout Wednesdays include exercise plus a free lunch. The main thing to be aware of is that this is a fast-paced startup environment where priorities can shift quickly, which some reviewers flag as a challenge. There is also a slight bias toward hiring passionate runners, though this has been improving. If you want to work on a product that helped millions of runners train, alongside kind and ambitious people, with the backing and scale of Strava behind you, Runna is a brilliant opportunity.

• Receive £108,000 to £121,000 salary plus participation in Strava's long-term incentive stock programs. • Enjoy flexible working with typically 3 days a week together in the Vauxhall office. • Take 25 days holiday plus bank holidays which you can take whenever suits you. • Get free Runna and Strava subscriptions for you and 3 of your friends. • Access Headspace membership. • Receive money every year to spend on gear, events, and the gym. • Get private health insurance with Bupa and workplace pension scheme. • Access Modern Health mental wellness platform. • Benefit from Carrot fertility support for inclusive fertility, hormonal health, and family-forming benefits.

Runna is a personalised coaching app for runners changing the way people train for 5ks, marathons, and more. The mission is to help people train better and love running. In 2024, Runna was selected by Apple as one of three global finalists for iPhone App of the Year, and in 2025 was acquired by Strava. With 150+ people across London and Boston, 30,000+ 5-star reviews, and millions of users globally, Runna is building the go-to global leading training platform for runners everywhere.