Senior Software Engineer I

We are looking for talented, creative and positive team players to join our highly-skilled cross-functional engineering team. You'll sit on the Train Team where you will work 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).

You will work closely with our founders, CTO, and engineering leadership team to help shape the future of Runna, who will support you all along this exciting journey. We have a jam packed roadmap, with countless opportunities to champion new technologies, work on meaningful problems that impact millions of runners, and improve existing architecture to elevate the whole of our engineering team.

What You'll Do:

• Architect, build, test and deliver new features across the full stack
• Work 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 other team members when they need help on technical matters
• Help us operate more efficiently, by building and maintaining our developer tooling and CI/CD pipeline
• We rotate the responsibility of releases across each team member, so you will get the opportunity to lead the process and deploy changes to production

• Very proficient in TypeScript/JavaScript development
• Able to work in a highly skilled engineering team in a fast-paced, iterative environment. In 2024 we shipped:
• 99 mobile app releases (iOS and Android)
• 443 API releases
• 237 modelling backend releases
• 2+ years experience in your main expertise area (Frontend, Backend etc)
• Comfortable picking up new things and working on technologies outside your comfort zone
• Are skilled in delivering features end-to-end, from architecture design and building through to releasing, testing and supporting
• Enthusiasm for our ways of working which include:
• Iterative development, continuous deployment and test automation
• Knowledge sharing, pair programming, collaborative design & development
• Shared code ownership & cross-functional teams
• Are experienced in delivering features full-stack
• Have experience with React Native
• Have experience with AWS

Bonus points if you have:

• Have experience working with native frameworks and tooling (SwiftUI, etc)
• Are experienced in deployment, releasing cycles or CI/CD
• Experience with Terraform or other IaC tooling (e.g. CDK, CloudFormation, etc.)
• Have experience in open source contributions, including reporting bugs/issues in GitHub, testing new releases, or contributing to code

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! 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.