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# Software Engineer I (Growth)

- **Company:** Runna
- **Location:** UK
- **Experience:** Expert
- **Salary:** £78,000.0
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), A/B Testing, Amazon Web Services, Amazon S3, Apple IOS, App Store (IOS), Continuous Integration, Amazon DynamoDB, Github, Node.Js, Mixpanel, TypeScript, Google Tag Manager, ReactJS, Snowflake, AWS Lambda, Backend, Servicebus, Kotlin, Sentry, Graphql, React Native, Front End Software Development, Amazon Simple Queue Service (SQS), Serverless Computing
- **Published:** September 5, 2026
- **Apply:** https://startup.jobs/senior-software-engineer-i-growth-runna-9018693

## About the Role

We're looking for people who are strong in some of these areas, not necessarily all of them. If this role excites you, please apply.

 * Solid TypeScript / JavaScript experience.
 * Experience building user-facing product surfaces where conversion and UX really matter - onboarding, paywalls, landing pages, growth loops, etc.
 * React experience (React Native is a bonus, not a requirement).
 * 2+ years of full stack experience - we value full stack experience more than depth in just one layer.
 * Comfortable working in a fast paced, iterative environment with lots of experimentation and learning from data.
 * Able to deliver features end-to-end: from architecture through to rollout, measurement and iteration.
 * Curious about what didn't work as much as what did., * Experience with Swift or Kotlin for mobile.
 * Experience working on growth, experimentation, or funnel optimisation teams.
 * Experience with analytics and experimentation tooling (A/B tests, feature flags, etc).

## Description

* Architect, build, test and ship high impact user journeys and subscription funnels, focusing on turning curious visitors into engaged subscribers.
 * Design and run experiments across web and app - onboarding flows, paywalls, plan discovery - to improve conversion at every step.
 * Work closely with Product, Design and Data to help prioritise opportunities, define success metrics and make decisions grounded in experiment results.
 * Collaborate across teams to ensure users have a smooth, consistent experience as they move between products and platforms.
 * Implement and maintain instrumentation, tracking and tooling so we can understand behaviour, spot issues quickly and measure impact.
 * Own features end-to-end: from early discovery and technical design through to implementation, rollout, monitoring and iteration.
 * Contribute to our developer experience by improving CI/CD, testing and release workflows so the team can ship and learn quickly., Frontend
 * React or React Native (iOS and Android)
 * TypeScript
 * GraphQL (Apollo Client)

Backend

 * Node.js
 * Serverless (AWS) - Lambdas, SQS, DynamoDB, EventBridge, S3

Tools & Platforms

 * Sentry, GitHub Actions
 * Mixpanel, Intercom, RevenueCat
 * App Store Connect / Play Store
 * Google Tag Manager, Snowflake


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