Staff Full Stack Software Engineer

Runna; Greater London; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Stock options

Shape product and culture

Equipment provided

25 days vacation + holidays

Paid time to run

Family-friendly benefits

Job summary

Runna is seeking a Staff Software Engineer (Full Stack) to drive the technical success of the platform across multiple squads. You will provide architectural direction, mentor engineers, and champion scalable, secure solutions while leading end-to-end delivery of major initiatives.

You will shape the technology strategy, collaborate with Product and Design, and own release processes to enable reliable, autonomous shipping.

Qualifications

• 6+ years of professional experience in software engineering, with a focus on technical leadership and driving projects end-to-end.
• Experience mentoring engineers and guiding complex projects from design to release.
• Familiarity shipping LLM-backed features to production, including prompt and context design for user-facing products.

Responsibilities

• Lead the architectural design and technical strategy across multiple product teams to ensure scalable, secure, and maintainable solutions.
• Drive end-to-end delivery of key initiatives, hands-on across full stack (mobile, backend, integrations).
• Coach and support engineers with technical guidance, mentorship, and code reviews to grow the team.
• Own the release process and enable reliable, continuous deployment across squads.
• Collaborate with Product, Design, and Engineering Leads to balance speed, quality, and long-term goals.
• Grow a high-performing engineering culture based on ownership and knowledge-sharing.

Skills

Full stack engineering

Technical leadership

Mentoring engineers

Architectural design

AI in SDLC

React Native

NodeJS

TypeScript

AWS serverless

CI/CD pipelines

Tools

AWS

Terraform

AppSync

DynamoDB

S3

SQS

SNS

EventBridge

Lambda

GitHub Actions

Job description

• 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
• 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

Our 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

Benefits

• Own a part of Runna: We want you to own a part of the company you’re building. Everyone who joins Runna receives a generous stock options package
• Grow with us: As one of our early hires, you’ll have a unique opportunity to shape and influence Runna’s product and culture from the beginning
• Learn and develop: We work with all of the latest tools and technologies so you can learn at the cutting edge of product development
• Team socials: We’re a friendly bunch and like to make work‑like fun, whether that’s lunches and dinners or our bi‑weekly team run
• Paid vacation: We want people to take time off to rest and rejuvenate. Runna offers 25 vacation days + bank holidays
• Tools: You’ll receive all new equipment including a laptop, running watch of your choice, and anything else you need to do your best work
• Get paid to Run(na): We have a dedicated hour block each week where you’ll get paid to run! Whether you want to build up to your first 5k or do that tough intervals sessions it’s up to you!
• Enhanced family care: 3 months fully paid when you welcome a new Runna into the family, as well as fertility support & a host of other benefits

Skilled in defining and delivering features from initial architecture and design through to release, testing, and production support878 API releasesAble to thrive in a highly skilled, fast‑paced engineering team. So far in 2026, we shipped:Broad AWS experience across serverless (Lambda, API Gateway, AppSync), containers (ECS/EKS) and managed services, with no strong attachment to one deployment modelDeep expertise in TypeScript/JavaScript, with a strong foundation across the full stackProven ability to mentor engineers, support team growth, and guide complex projects from design to releaseFamiliarity shipping LLM-backed features to production, including prompt and context design, in a user facing product6+ years of professional experience in software engineering, with a focus on technical leadership and driving projects end‑to‑end49 mobile app releases (iOS and Android)Able to thrive in autonomous roles, taking ownership without heavy directionComfortable with Infrastructure as Code tooling like Terraform, CDK, or CloudFormationHands‑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’t552 modelling backend releasesHave hands‑on experience with SwiftUI or native mobile developmentAre confident working with and improving CI/CD pipelines, release cycles, and deployment processesExperience working with cross‑platform frameworks, such as React Native