Senior Full Stack Engineer II (Contract)

We're putting together a talented team to build the #1 training platform for Runners We help everyday runners become outstanding by building an incredible app providing world-class training, coaching and community for everyone, whether you're improving your 5k time or training for your first marathon. We’re growing extremely fast! In November 2023 we closed a $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 iPhone app of the year, reflecting the innovation and impact of what we’ve built & in 2025 we were acquired by Strava https://www.strava.com/about?hl=en-GB! Our ambition is huge: to become the go-to global leading training platform for millions of runners everywhere. We’re growing with purpose and looking for people who want to build something meaningful with lasting impact. With the recent acquisition by Strava accelerating our journey, now is a really magical time to join. 🚀 ABOUT THE CONTRACT ROLE We are looking for talented, creative and positive team players for our highly-skilled cross-functional engineering group on a contract basis. This role will collaborate closely with our modelling teams to integrate features that are core to Runna’s mission (think adapting plans around holidays and B races, supporting new cutting edge plans, and building in-app experiences around our AI/ML tooling). This will be a 6-month contract role. WHAT YOU’LL BE DOING - Architecting, building, testing and delivering new features across the full stack - Working with the Product team to identify the most suitable solution for the best customer experience - Collaborating with modelling/AI engineers to design architecture used to interface between the Runna training engine and Runna app - Always be on hand to help when help is needed on technical matters - Coaching and supporting engineers, providing guidance, mentorship, and code reviews without creating