jobapplier

Senior Software Engineer (Growth)

Runna

Skills

Required

  • React
  • React Native
  • TypeScript / JavaScript
  • learning from data
  • iOS
  • Android
  • analytics
  • experimentation tooling
  • feature flags
  • Swift / Kotlin

Preferred

  • paywalls
  • plan discovery
  • Node.js

Serverless (AWS) — Lambdas, SQS, DynamoDB, EventBridge, S3

Sentry, GitHub Actions

GraphQL (Apollo Client)

Here's what we work with. You won't need all of it on day one

About Runna

Join Runna, a fast-growing startup in the fitness industry. As a Senior Software Engineer (Growth), you will architect, build, test, and ship high-impact user journeys and subscription funnels. You will design and run experiments to improve conversion rates, collaborate with cross-functional teams, and own features end-to-end. Enjoy a generous stock options package, 25 vacation days, and a unique opportunity to shape Runna's product and culture.

Architect, build, test, and ship high-impact user journeys and subscription funnels to improve conversion rates.

Collaborate with Product, Design, and Data teams to prioritize opportunities, define success metrics, and make data-driven decisions.

2+ years of full stack experience — we value full stack experience more than depth in just one layer

Tools & Platforms

Responsibilities

  • Design and run experiments across web and app onboarding flows, paywalls, and plan discovery to enhance user engagement.
  • TypeScript
  • App Store Connect / Play Store
  • Node.js
  • Backend
  • Mixpanel, Intercom, RevenueCat
  • Frontend

Requirements

  • React experience (React Native is a bonus, not a requirement)

Solid TypeScript / JavaScript experience

  • Experience building user-facing product surfaces where conversion and UX really matter — onboarding, paywalls, landing pages, growth loops, etc
  • 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
  • React or React Native (iOS and Android)
  • Google Tag Manager, Snowflake
  • Experience with analytics and experimentation tooling (A/B tests, feature flags, etc)
  • Experience with Swift or Kotlin for mobile
  • Experience working on growth, experimentation, or funnel optimisation teams

Pay

GBP 70,000 - 78,000