Senior Software Engineer I

🔒 Confidential Employer
Posted 9 May 2026
LOCATION
London
TYPE
Full-time
LEVEL
Mid-Senior level
SALARY
£78,375 / year
CATEGORY
Software Engineering
This employer holds a UK Home Office sponsor license — sponsorship for this specific role is at the employer’s discretion

SKILLS

TypeScript JavaScript React Native AWS GraphQL Serverless (AWS Lambda) CI/CD DynamoDB

FULL DESCRIPTION

Senior Software Engineer I

[Employer hidden — sign up to reveal] • London, UK • £70,125-£78,375/year + Equity • Hybrid • Full-time

About [Employer hidden — sign up to reveal]

At [Employer hidden — sign up to reveal], we help everyday runners become outstanding by building an incredible app providing world-class training, coaching and community. We're growing extremely fast and were recently acquired by Strava. Our ambition is to become the go-to global leading training platform for millions of runners.

The Team You'll Join

You’ll sit on the Train Team where you will work closely with our modelling teams to integrate features core to [Employer hidden — sign up to reveal]’s mission. You will work with founders, CTO, and engineering leadership.

What You'll Do

  • Architect, build, test and deliver new features across the full stack
  • Work with the Product team to identify suitable solutions
  • Collaborate with modelling/AI engineers on architecture design
  • Help team members on technical matters
  • Build and maintain developer tooling and CI/CD pipeline
  • Lead releases and deploy changes to production

What You'll Bring

  • Very proficient in TypeScript/JavaScript
  • Able to work in a fast-paced, iterative environment
  • 2+ years experience in main expertise area
  • Comfortable picking up new technologies
  • Skilled in delivering features end-to-end
  • Enthusiasm for iterative development, continuous deployment, collaboration
  • Experience with React Native and AWS

Bonus Points

  • Experience with native frameworks (SwiftUI, etc.)
  • Experience in deployment, releasing cycles, CI/CD
  • Experience with Terraform or other IaC
  • Open source contributions

Our Tech Stack

Frontend: React Native, TypeScript, GraphQL, Fastlane, SwiftUI, Maestro. Backend: Serverless (AWS), Lambdas (NodeJS & Python), AWS AppSync, DynamoDB, S3, SQS, SNS, EventBridge, SageMaker, Snowflake. Other: Sentry, GitHub Actions, Intercom, Mixpanel, RevenueCat, etc.

Salary and Benefits

Salary of £70,125-£78,375 per year plus equity. Benefits include flexible working (3 days in Vauxhall office), 25 days holiday, free [Employer hidden — sign up to reveal] & Strava subscriptions, Headspace, gear allowance, private health insurance, pension, mental wellness platform, fertility support.

Interview Process

  • Screening call with Talent team
  • Getting to Know You + Live Coding
  • Take home technical task
  • 1.5-hour technical interview
  • Meet the team in person
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