Senior Software Engineer I (Growth & Marketing Technology)

Runna

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. 🚀 THE TEAM YOU'LL JOIN Our Growth Engineering team owns key parts of the user journey into Runna, working across web and app to turn first time visitors into long term, engaged subscribers. You'll collaborate closely with product, design and data partners, as well as our GTM and business development teams, to shape how new users first discover and experience Runna. WHAT YOU'LL BE DOING * Architect, build, test and ship high impact user journeys and subscription funnels, focusing on turning curious visitors into engaged subscribers. * Design and run experiments across web and app - onboarding flows, paywalls, plan discovery - to improve conversion at every step. * Work closely with Product, Design and Data to help prioritise opportunities, define success metrics and make decisions grounded in experiment results. * Collaborate across teams to ensure users have a smooth, consistent experience as they move between products and platforms. * Implement and maintain instrumentation, tracking and tooling so we can understand behaviour, spot issues quickly and measure impact. * Own features end-to-end: from early discovery and technical design through to implementation, rollout, monitoring and iteration. * Contribute to our developer experience by improving CI/CD, testing and release workflows so the team can ship and learn quickly. WHAT YOU'LL BRING TO THE TEAM We're looking for people who are strong in some of these areas, not necessarily all of them. If this role excites you, please apply. * Solid TypeScript / JavaScript experience. * Experience building user-facing product surfaces where conversion and UX really matter — onboarding, paywalls, landing pages, growth loops, etc. * React experience (React Native is a bonus, not a requirement). * 2+ years of full stack experience — we value full stack experience more than depth in just one layer. * Comfortable working in a fast paced, iterative environment with lots of experimentation and learning from data. * Able to deliver features end-to-end: from architecture through to rollout, measurement and iteration. * Curious about what didn't work as much as what did. HOW WE WORK We believe great engineering is a team sport. Here's what that looks like in practice: * Iterative development, continuous deployment and test automation. * Knowledge sharing and collaborative design — we build together, not in silos. * Shared ownership of code and outcomes across cross-functional teams. * Psychological safety to experiment, fail, learn and try again. BONUS POINTS These are optional extras, not hidden requirements: * Experience with Swift or Kotlin for mobile. * Experience working on growth, experimentation, or funnel optimisation teams. * Experience with analytics and experimentation tooling (A/B tests, feature flags, etc). OUR TECH STACK Here's what we work with. You won't need all of it on day one. Frontend * React or React Native (iOS and Android) * TypeScript * GraphQL (Apollo Client) Backend * Node.js * Serverless (AWS) — Lambdas, SQS, DynamoDB, EventBridge, S3 Tools & Platforms * Sentry, GitHub Actions * Mixpanel, Intercom, RevenueCat * App Store Connect / Play Store * Google Tag Manager, Snowflake SALARY AND BENEFITS We’re offering a salary of £70,00-£78,000 per year, depending on experience, plus participation in Strava's long-term incentive (stock) programs. Overview of our benefits is below:We’re also committed to continually evolving our benefits to support you as we grow. Here is a brief overview what we currently offer in the UK 🇬🇧 * 💪 Flexible working — typically 3 days a week in our Vauxhall office, with flexibility around life commitments. * 🏝️ 25 days holiday plus bank holidays. * 🏥 Private health insurance (Bupa) and workplace pension scheme. * 📚 Modern Health — mental wellness platform combining therapy, coaching and self guided programmes. * 🥕 Carrot Fertility — inclusive fertility, hormonal health and family forming support. We want everyone to feel supported in building their family, whatever that looks like. * 😌 Headspace membership for mindfulness and sleep. * 💵 Annual budget for gear, events and gym. * 💳 Free Runna and Strava subscriptions for you and 3 friends. Please see more info on our amazing benefits here: Benefits at Runna OUR INTERVIEW PROCESS WE AIM TO MAKE THIS AS CLEAR AND LOW-STRESS AS POSSIBLE. HERE'S WHAT TO EXPECT: * Screening call with our Talent team (30 minutes, video call). * Getting to Know You + Live Coding (45 minutes — 15 mins intro chat, then a short coding exercise. This is designed to be conversational, not a test to catch you out. We use an accessible problem from leetcode.com and talk through our thinking together). * Take home technical task (feel free to use AI tools as part of your normal workflow). * Technical interview (1.5 hours — first half on general full-stack questions, second half is a system design exercise based on a real problem our team has worked on at Runna). * Meet the team (in-person at our Vauxhall office with founders and the wider team). Runna is committed to building a diverse and inclusive team. We particularly encourage applications from groups that are underrepresented in engineering, including women, people of colour, and LGBTQ+ people. Please let us know if there’s anything we can do to better accommodate you throughout the interview process - this can be from scheduling interviews around childcare commitments to accessibility requirements. We want you to show your best self in the process, so please speak to your Talent Partner

Runna

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. 🚀 THE TEAM YOU’LL JOIN 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 WHAT YOU'LL BRING TO THE TEAM: * 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 OUR TECH STACK Find below 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 * Snowflake ALL THE OTHER GOOD STUFF: * Sentry * GitHub Actions * Intercom, Mixpanel * RevenueCat * App Store Connect / Play Store * Google Tag Manager We follow a flexible hybrid model that translates to more than half of your time on-site – 3 days per week in Runna's office based in London, UK. SALARY AND BENEFITS We’re offering a salary of £70,125 - £78,375 per year, depending on experience, plus participation in Strava's long-term incentive (stock) programs. Overview of our benefits is below: We’re also committed to continually evolving our benefits to support you as we grow. Here is a brief overview what we currently offer in the UK 🇬🇧 * 🏢 Flexible working – we typically spend 3 days a week together in our Vauxhall office * 🏝️ 25 days holiday, plus bank holidays (which you can take whenever suits you) * 📱Free Runna & Strava subscriptions for you and 3 of your friends (get ready to be your friends fave person or save them for holiday presents!) * 🧘 Headspace membership * 💸 Money every year to spend on gear, events and the gym! * 🏥 Private health insurance with Bupa and workplace pension scheme * 💖Modern Health is a mental wellness platform and app that combines technology with professional support to improve mental well-being and reduce stress * 🥕Carrot fertility support - this benefits provider can provide inclusive fertility, hormonal health, and family-forming benefits to our global employee population and takes the burden off what we know can be a stressful process. Please see more info on our amazing benefits here: Benefits at Runna OUR INTERVIEW PROCESS: Our aim is to keep the interview process as straightforward and enjoyable as possible, and will consist of the following stages: 1. Screening call with Talent team (30 minute video call) 2. 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/) 3. 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) 4. 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 of system design and some general architecture/tech questions) 5. Meet the team (in-person chat with founder(s) and rest of the team) Please let us know if there’s anything we can do to better accommodate you throughout the interview process - this can be from scheduling interviews around childcare commitments to accessibility requirements. We want you to show your best self in the process, so please speak to your Talent Partner

Runna

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. 🚀 THE TEAM YOU’LL JOIN We are looking for talented, creative and positive team players to join our highly-skilled cross-functional engineering team. You’ll sit in our recently formed Strength Team, where you will collaborate with our modelling engineers, as well as Team Strava, to build the next generation of strength training and redefine how athletes train. You will work closely with our 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 athletes, and improve existing architecture to elevate the whole of our engineering team. 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 other team members when they need help on technical matters * Coach and support engineers in your team, providing guidance, mentorship, and code reviews without creating bottlenecks. * 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 * Impacting the wider engineering team by championing new technologies and setting standards for engineering quality WHAT YOU’LL BRING TO THE TEAM: * Proficiency working with TypeScript/JavaScript * Experience with the technologies in our stack: * React Native (worked on large scale applications) * Native mobile development (Swift, Kotlin) * Cloud platforms, particularly AWS * Able to work in a highly skilled engineering team in a fast-paced, iterative environment. * 4+ 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 BONUS POINTS IF YOU HAVE: * Are experienced in deployment, releasing cycles or CI/CD * Have experience with Serverless architectures * 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 COMPENSATION OVERVIEW & BENEFITS We’re offering a salary of £85,000 - £95,000 per year, depending on experience, plus participation in Strava's long-term incentive (stock) programs. Overview of our benefits are below: We’re also committed to continually evolving our benefits to support you as we grow. Here is a brief overview what we currently offer in the UK 🇬🇧 1. 🏢 Flexible working – we typically spend 3 days a week together in our Vauxhall office 2. 🏝️ 25 days holiday, plus bank holidays 3. 📱Free Runna & Strava subscriptions for you and 3 of your friends (get ready to be your friends fave person or save them for holiday presents!) 4. 🧘 Headspace membership 5. 💸 Money every year to spend on gear, events and the gym! 6. 🏥 Private health insurance with Bupa and workplace pension scheme 7. 💖Modern Health is a mental wellness platform and app that combines technology with professional support to improve mental well-being and reduce stress 8. 🥕Carrot fertility support - this benefits provider can provide inclusive fertility, hormonal health, and family-forming benefits to our global employee population and takes the burden off what we know can be a stressful process. Please let us know if there’s anything we can do to better accommodate you throughout the interview process - this can be from scheduling interviews around childcare commitments to accessibility requirements. We want you to show your best self in the process, so please speak to your Talent Partner!