Staff Software Engineer (Full Stack)

Responsibilities

• 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.

Preferred

• Experience working with cross-platform frameworks, such as
• React Native
• SwiftUI
• or native mobile development.
• Are confident working with and improving

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

TypeScript/JavaScript

, 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, AppSync), 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 (iOS 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 CloudFormation.
• Able to thrive in autonomous roles, taking ownership without heavy direction.

Bonus points if you have

Have hands-on experience with

CI/CD pipelines, release cycles, and deployment processes.

Our Tech Stack

Below you can find 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

• AWS (Serverless/Terraform)
• Lambdas (NodeJS & Python)

ECS

• AppSync, DynamoDB, S3, SQS, SNS, EventBridge
• Snowflake

All the other good stuff

• Sentry
• GitHub Actions
• Intercom, Mixpanel
• RevenueCat
• 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. 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
• 📱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).

Please see more info on our amazing benefits here:

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

How to Apply

Please apply through this link

• (this will take you to our Ashby career hub).
• Please note, we are unable to accept any applications outside of Ashby. I f you have any questions regarding the status of your application, please email careers@runna.com
• Still have questions or want to know more? Check out our

Careers Page

🌎 We’re unfortunately unable to sponsor for this role