At a Glance
- Tasks: Join us to build the ultimate training platform for runners and make a real impact.
- Company: Fast-growing tech company recently acquired by Strava, focused on innovation and community.
- Benefits: Competitive salary, flexible working, health insurance, and free subscriptions for you and friends.
- Other info: Exciting career growth opportunities in a supportive and collaborative environment.
- Why this job: Be part of a dynamic team shaping the future of running with cutting-edge technology.
- Qualifications: 6+ years in software engineering, strong in TypeScript/JavaScript, and experience with AI.
The predicted salary is between 110000 - 131000 £ per year.
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 Jam Jar with participation from Eka Ventures, Venrex and Creator Ventures.
In 2024, we were selected by Apple as one of three global finalists for the i Phone 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’re looking for a Staff Software Engineer (Full Stack) to play a pivotal role in driving the technical success of Runna.
This is a hands‑on role where you’ll work across multiple squads, providing architectural direction, ensuring engineering excellence, and enabling the successful delivery of features across the entire Runna platform.
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.
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.
What You’ll Be Doing
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.
- Lead the architectural design and technical strategy across multiple product teams, ensuring scalable, secure, and maintainable solutions.
- Champion how we adopt AI across our SDLC, from agentic workflows and automated code review through to the tooling and guardrails that help the wider team ship faster without lowering the bar.
- 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).
- Coach and support engineers by providing technical guidance, mentorship, and code reviews without creating bottlenecks.
- Collaborate with Product, Design, and Engineering Leads to define the best solutions for user experience, balancing speed, quality, and long‑term technical goals.
- Own the release process and support a culture of reliable, continuous deployment—while enabling teams to ship confidently and independently.
- Maintain and grow a high‑performing engineering culture based on ownership, knowledge‑sharing, and continuous improvement.
- What You’ll Bring To The Team
- 6+ years of professional experience in software engineering, with a focus on technical leadership and driving projects end‑to‑end.
- Deep expertise in Type Script/Java Script, with a strong foundation across the full stack.
- Hands‑on experience putting AI to work in a real engineering organisation, whether that’s agentic workflows, automated code review, or internal agents.
You have a clear view of where it pays off and where it doesn’t.
- Familiarity shipping LLM‑backed features to production, including prompt and context design, in a user facing product.
- Broad AWS experience across serverless (Lambda, API Gateway, App Sync), containers (ECS/EKS) and managed services, with no strong attachment to one deployment model.
- Skilled in defining and delivering features from initial architecture and design through to release, testing, and production support.
- Able to thrive in a highly skilled, fast‑paced engineering team. So far in 2026, we shipped:
- 49 mobile app releases (i OS and Android)
- 878 API releases
- 552 modelling backend releases
- Proven ability to mentor engineers, support team growth, and guide complex projects from design to release.
- Comfortable with Infrastructure as Code tooling like Terraform, CDK, or Cloud Formation.
- Able to thrive in autonomous roles, taking ownership without heavy direction.
- Bonus Points If You Have
- Experience working with cross‑platform frameworks, such as React Native
- Have hands‑on experience with Swift UI or native mobile development.
- Are confident working with and improving CI/CD pipelines, release cycles, and deployment processes.
- Our Tech Stack
- Frontend
- React Native (i OS and Android)
- Typescript
- Graph QL (Apollo Client)
- Fastlane
- Swift UI (Apple Watch)
- Maestro E2E tests
- Backend
- AWS (Serverless/Terraform)
- Lambdas (Node JS & Python)
- ECS
- App Sync, Dynamo DB, S3, SQS, SNS, Event Bridge
- Snowflake
- All The Other Good Stuff
- Sentry
- Git Hub Actions
- Intercom, Mixpanel
- Revenue Cat
- App Store Connect / Play Store
Salary And Benefits
We’re offering a salary of £110,000 - £131,000 per year, depending on experience, plus participation in Strava's long‑term incentive (stock) programs.
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
- 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.
- Parenthood is an exciting, challenging and beautiful thing.
Our Family Care Leave is here to support parents as they welcome their new arrival.
In line with our commitment to inclusivity, we provide leave to parents irrespective of gender or path to parenthood (e. g. natural childbirth, surrogacy or adoption).
Our Interview Process
Our aim is to keep the interview process as straightforward and enjoyable as possible, and will consist of the following stages:
- Screening call with Talent team (30 minute video call)
- 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 of system design and some general architecture/tech questions)
- 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
- #J-18808-Ljbffr
Staff Software Engineer (Full Stack) employer: Runna
Runna is an exceptional employer, offering a vibrant work culture that prioritises flexibility and collaboration in our Vauxhall office. With a strong focus on employee growth, we provide ample opportunities for professional development, alongside generous benefits such as private health insurance, wellness programmes, and a supportive environment for innovation. Joining us means being part of a passionate team dedicated to making a meaningful impact in the running community, especially during this exciting phase following our acquisition by Strava.
StudySmarter Expert Advice🤫
We think this is how you could land Staff Software Engineer (Full Stack)
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Runna or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Runna.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Runna.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Runna that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Staff Software Engineer (Full Stack)
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Runna.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Runna and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Runna
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Runna uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
