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- Tasks: Architect and build impactful user journeys to engage subscribers.
- Company: Join a dynamic team at a leading app for runners.
- Benefits: Enjoy flexible working, 25 days holiday, and wellness perks.
- Other info: Collaborative environment with opportunities for growth and learning.
- Why this job: Make a real difference in the running community with your tech skills.
- Qualifications: Strong TypeScript/JavaScript experience and a passion for user experience.
The predicted salary is between 70000 - 78000 ÂŁ per year.
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.
What you’ll be doing:
- Architect, build, test and ship high impact user journeys and subscription funnels, focusing on turning curious visitors into active, engaged subscribers.
- Design and run experiments across web and app (such as onboarding flows, paywalls, and plan discovery experiences) to improve conversion at each step of the journey.
- Work closely with Product, Design and Data to prioritise opportunities, define clear success metrics and make decisions grounded in experiment results.
- Collaborate with other teams to ensure users have a smooth, consistent experience as they move between different products and platforms.
- Implement and maintain the instrumentation, tracking and tooling needed so we can understand behaviour, spot issues quickly and measure impact with confidence.
- Own features end‑to‑end: from early discovery and technical design through implementation, rollout, monitoring and iterative improvements.
- Contribute to our developer experience by improving CI/CD, testing and release workflows, enabling the team to ship and learn quickly.
What you’ll bring to the team:
- Strong TypeScript/JavaScript experience.
- Experience building user‑facing product surfaces where conversion and UX really matter (onboarding, paywalls, landing pages, growth loops, etc).
- Comfortable working in a fast‑paced, iterative environment with lots of experimentation and learning from data.
- 2+ years experience in your main expertise area (frontend, backend or full‑stack).
- Skilled at delivering features end‑to‑end: from architecture and implementation through to rollout, measurement and iteration.
- You enjoy learning from experiments, and are as interested in what did not work as in the wins.
- Enthusiasm for our ways of working: Iterative development, continuous deployment and test automation.
- Knowledge sharing, pair programming and collaborative design.
- Shared ownership of code and outcomes across cross‑functional teams.
- Experience working full‑stack, or a strong interest in stretching across the stack.
Bonus points if you have:
- Experience with Swift or Kotlin for mobile, or Next.js for web experiences.
- Experience working on growth, experimentation, or funnel optimisation teams.
- Experience with analytics and experimentation tooling to support A/B tests.
Our Tech Stack:
- Frontend: React Native (iOS and Android), TypeScript, GraphQL (Apollo Client), Fastlane, SwiftUI (Apple Watch), Maestro E2E tests.
- Backend: Serverless (AWS), Lambdas (Node.js & Python), AWS AppSync, DynamoDB, S3, SQS, SNS, EventBridge, SageMaker, Snowflake.
Salary & Benefits:
We’re offering a salary of £70,000–£78,000 per year, depending on experience, plus participation in Strava’s long‑term incentive (stock) programs. Benefits in the UK include:
- Flexible working – we typically spend 3 days a week together in our Vauxhall office.
- 25 days holiday, plus bank holidays.
- Free Runna & Strava subscriptions for you and 3 of your friends.
- Strava membership.
- Headspace membership.
- Annual money allowance to spend on gear, events and the gym.
- Voucher to spend on our website, renewed yearly on your work anniversary.
- Private health insurance with Bupa and workplace pension scheme.
- Modern Health – a mental wellness platform and app that combines technology with professional support to improve mental well‑being and reduce stress.
- Carrot fertility support – inclusive fertility, hormonal health and family‑forming benefits.
Interview Process:
- Screening call with Talent team (30 minute video call).
- Getting to Know You + Live Coding (45‑minute video call, first 25 mins introductory chat followed by two live coding exercises from leetcode.com).
- Take‑home technical task (max 1–2 hours to complete, or showcase recent work if applicable).
- 1.5‑hour technical interview: first half to discuss the take‑home task, second half system design and general architecture/tech questions.
- Meet the team (in‑person chat with founder(s) and rest of the team).
Senior Software Engineer I (Growth) employer: Runna
Contact Detail:
Runna Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Software Engineer I (Growth)
✨Tip Number 1
Get your networking game on! Reach out to folks in the industry, attend meetups, or join online communities. We all know that sometimes it’s not just what you know, but who you know that can help you land that dream job.
✨Tip Number 2
Practice makes perfect! Before your interviews, do some mock coding sessions with friends or use platforms like LeetCode. We want you to feel confident and ready to tackle those live coding challenges.
✨Tip Number 3
Show off your projects! If you've built something cool, make sure to have it ready to share during interviews. We love seeing your work and how you approach problem-solving, so don’t be shy about showcasing your skills.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we’re always on the lookout for passionate candidates who are excited about growth engineering.
We think you need these skills to ace Senior Software Engineer I (Growth)
Some tips for your application 🫡
Tailor Your Application: Make sure to customise your CV and cover letter to highlight your experience with TypeScript/JavaScript and any relevant projects. We want to see how your skills align with our mission of helping runners improve their performance!
Showcase Your Projects: Include links to your GitHub or any live projects that demonstrate your full-stack capabilities. We love seeing real examples of your work, especially if they involve user-facing products and growth optimisation!
Be Data-Driven: When discussing your past experiences, focus on how you’ve used data to inform decisions and improve user journeys. We’re all about experimentation, so share what you learned from both successes and failures!
Apply Through Our Website: We encourage you to apply directly through our website for a smoother process. It helps us keep track of applications and ensures you don’t miss out on any important updates from us!
How to prepare for a job interview at Runna
✨Know Your Tech Stack
Make sure you’re well-versed in the technologies mentioned in the job description, especially TypeScript, JavaScript, and React Native. Brush up on your knowledge of AWS services and serverless architecture, as these are crucial for the role.
✨Showcase Your Problem-Solving Skills
During the live coding exercises, focus on demonstrating your thought process. Explain your reasoning as you tackle problems, and don’t hesitate to discuss alternative solutions. This will show your ability to think critically and adapt.
✨Prepare for Collaboration Questions
Since the role involves working closely with Product, Design, and Data teams, be ready to discuss your experience in collaborative environments. Share examples of how you’ve contributed to cross-functional projects and how you handle feedback.
✨Emphasise Your Growth Mindset
Highlight your enthusiasm for learning from experiments and data. Be prepared to discuss past experiences where you learned from failures or unexpected results, as this aligns with the company’s iterative development approach.