We're putting together a talented team to build the 1 training platform for Runners We help everyday runners become outstanding by providing world-class training, coaching and community for everyone, whether you're improving your 5k time or training for your first marathon. To date we have built iOS, Android and Apple watch apps that help people achieve their goals by coaching them through the full journey and syncing to their favourite fitness devices. We’re growing extremely fast and in November 2023 closed a new $6.5M funding round led by JamJar with participation from Eka Ventures, Venrex and Creator Ventures. In 2024, we were selected by Apple as one of three global finalists for the 2024 iPhone App of the Year, reflecting the innovation and impact of what we’ve built. We want to grow as fast as we can into the future and are looking for individuals who will help us get there. For more about our background and growth check out our Careers Page We’re now looking ahead to the future and the people who want to help us build and scale Runna. Our aim is to reach millions of subscribers in the next 5 years and be the go-to training platform for any runner. Now is a magical time to join, we're still small, and everyone makes a foundational difference. Requirements Who we’re looking for We’re looking for a Staff Level Full-Stack Engineer to play a pivotal role in driving the technical success of Runna. This is a hands-on leadership role where you’ll work across four cross-functional product teams, providing architectural direction, ensuring engineering excellence, and enabling the successful delivery of features across our iOS (React-Native), Android (React-Native), and Apple Watch apps, as well as third-party integrations (Garmin, Strava, Coros, Fitbit, Suunto, etc). You’ll partner closely with our CTO and founders, as well as product and design leads, to align technical strategy with company goals. You’ll be a multiplier for the engineering team—mentoring developers, improving processes, and guiding the evolution of our systems as we scale. We’re looking for someone who is not only technically excellent, but also a creative problem solver and collaborative leader who brings energy and clarity to fast-paced environments. As a Staff Level Full-Stack Engineer, your role will include: 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 (mobile, backend, integrations). Collaborate with Product, Design, and Engineering Leads to define the best solutions for user experience, balancing speed, quality, and long-term technical goals. Mentor and support engineers across teams, providing technical guidance, code reviews, and promoting engineering best practices. Champion developer productivity by improving our 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. What experience we’re looking for If you don’t quite meet all of the below skills, we’d still love to hear from you as we might be able to tweak the role slightly or offer you a position better suited for you. You can apply directly below or contact us if you’re still unsure. Your key skills: Deep expertise in TypeScript/JavaScript, with a strong foundation across the full stack. Proven track record of leading the architecture and successful delivery of large scale React-Native mobile applications in a production environment. Experience working in AWS cloud environments, with a strong preference for familiarity with S erverless architectures (e.g. Lambda, API Gateway, DynamoDB, AppSync). Able to thrive in a highly skilled, fast-paced engineering team. In 2024, we shipped: 99 mobile app releases (iOS and Android) 443 API releases 237 modelling backend releases 5 years of professional experience in software engineering, with a focus on technical leadership and driving projects end-to-end. Comfortable stepping outside your core expertise to solve problems across the stack, from frontend to cloud infrastructure. Skilled in defining and delivering features from initial architecture and design through to release, testing, and production support. A strong advocate for modern engineering practices, including: Iterative development, continuous deployment, and test automation Knowledge sharing, pair programming, collaborative design & development Shared code ownership and working in cross-functional product teams Bonus points if you: Have delivered impactful work across the full stack —from mobile to backend services and cloud infrastructure. Have hands-on experience with SwiftUI or native mobile development. Are confident working with and improving CI/CD pipelines, release cycles, and deployment processes. Have experience with React Native at scale in performance-sensitive or offline-first applications. Have deep experience with AWS services and serverless architecture patterns. Are comfortable with Infrastructure as Code tooling like Terraform, CDK, or CloudFormation. Have contributed to open-source communities—through code, issues, testing, or documentation. Have a personal interest in health, fitness, or sports technology. Our tech stack Check out our Tech Radar here which we are constantly iterating, and below you can find a small reflection of our current tech stack: Frontend: React Native (iOS and Android) Typescript GraphQL (Apollo Client) Fastlane SwiftUI (Apple Watch) Maestro E2E tests Backend: Serverless (AWS) Lambdas (NodeJS & Python) AWS AppSync DynamoDB, S3, SQS, SNS, EventBridge, SageMaker Postman API tests All the other good stuff: Sentry GitHub Actions Intercom, Mixpanel RevenueCat App Store Connect / Play Store Google Tag Manager Software Engineer Interview Process Our aim is to keep the interview process as straightforward and enjoyable as possible, and will consist of the following stages: Getting to Know You Live Coding (45-minute video call, first 25 mins will be an introductory chat followed by two live coding exercises from https://leetcode.com/ ) Take home technical task (max 1-2 hours to complete, or if you have something interesting you recently built and would like to showcase then that's perfectly OK) 1.5-hour technical interview (the first half of the call will be used to discuss the take-home technical task from the previous stage and the second half will consist some general architecture/tech questions) Meet the team (in-person chat with founder(s) and rest of the team) Once the process is finished, we promise to let you know our decision as soon as possible. Benefits and options Salary £95,000-£110,000 Equity Based on years of direct, relevant experience. Software Engineer I £42.5k, Software Engineer II £47.5-60k, Software Engineer III £60-80k, Software Engineer IV £80k-95k, Software Engineer V £95k Overview of our benefits is below: Flexible working (we typically work 2-3 days in our office in Vauxhall) Salary reviews every 6 months or whenever we raise more investment 25 days of holiday plus bank holidays A workplace pension scheme A brand new Macbook, a running watch of your choice, £300 budget to set up your desk and anything else you need to do your best work Private health insurance Enhanced family care policy (3 months fully paid leave when a new Runna joins the family, fertility support & other benefits) An hour slot each week (during work time) to do a Runna workout We'll be growing our package of benefits over time read full details here Benefits at Runna