Staff Software Engineer (Full Stack)

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.

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.

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

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.

Experience working with cross-platform frameworks, such as React Native

Have hands-on experience with SwiftUI or native mobile development.

Are confident working with and improving CI/CD pipelines , release cycles, and deployment processes.

Below you can find a small reflection of our current tech stack:

React Native (iOS and Android)

Typescript

GraphQL (Apollo Client)

Fastlane

SwiftUI (Apple Watch)

Maestro E2E tests

AWS (Serverless/Terraform)

Lambdas (NodeJS & Python)

ECS

AppSync, DynamoDB, S3, SQS, SNS, EventBridge

Snowflake

Sentry

GitHub Actions

Intercom, Mixpanel

RevenueCat

App Store Connect / Play Store

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