Senior Software Engineer (Growth & Marketing Technology)

Runna; Greater London; On-site; GBP 85,000 - 120,000; Full time

Benefits offered by this job

Stock options

Shape product & culture

Learning new tools

Team socials

Job summary

Runna is seeking a Full Stack Engineer to join the Growth team in London. You’ll work at the intersection of product, data and marketing, building systems powering acquisition, activation and retention across channels.

You’ll contribute across full‑stack initiatives, launch experiments, and iterate based on results while collaborating with product, marketing and data peers. This role emphasizes marketing tech, tracking, and CRM integrations to drive growth.

Qualifications

• Strong TypeScript/JavaScript skills and experience with modern frontend frameworks (React/React Native).
• Solid experience as a full stack engineer (ideally 3+ years).
• Good understanding of event tracking, data quality and debugging across multiple platforms/tools.
• Bias towards experimentation and iteration—focus on impact and rapid learning.
• Strong ownership mindset and end-to-end delivery responsibility.

Responsibilities

• Improve how new users discover, try and subscribe to Runna.
• Run experiments across the funnel from ad click to in-app activation and engagement.
• Own core marketing tools and integrations powering lifecycle communications.
• Own implementation and maintenance of ad tracking SDKs and MMPs (TikTok, Meta, Google, AppsFlyer).
• Build and maintain tracking/tag manager setups across web and app for reliable, privacy-friendly data.
• Design, build, test and ship full-stack features for growth (landing pages, onboarding, referrals, promos).
• Integrate CRM and lifecycle tooling (Iterable or similar) including catalogs, data feeds, deeplinks and templates.
• Build internal tools and scripts (Python/Node) connecting systems, powering pLTV, dashboards, alerts.
• Collaborate with Growth/Marketing/Data to scope experiments and ship A/B tests.

Skills

TypeScript/JS

React/React Native

Full stack

Marketing tech

A/B testing

AWS/cloud

Tools

RevenueCat

Mobile attribution

Job description

• We’re looking for a full stack engineer to join our Growth team, with a strong focus on marketing technology. You’ll sit at the intersection of product, data and marketing – building and maintaining the systems that power our acquisition, activation and retention efforts across channels
• Although Marketing Technology is a core part of this role, you’ll also spend a significant portion of your time working across full‑stack initiatives in our Growth Product Squad – building features, launching experiments, and iterating based on results
• You’ll join our cross-functional Growth squad, working closely with product, marketing and data. The team is responsible for:
• Improving how new users discover, try and subscribe to Runna
• Running experiments across the funnel, from ad click through to in‑app activation and ongoing engagement
• Owning the core tools and integrations that power our marketing and lifecycle communications
• Own implementation and maintenance of ad tracking SDKs and MMPs (for example TikTok, Meta, Google, AppsFlyer), including event mapping and monitoring for signal loss
• Build and maintain tracking and tag manager setups across web and app so our data is reliable, privacy‑respectful and useful for models and reporting
• Design, build, test and ship full stack features that support growth (for example landing pages, onboarding flows, referral and promo experiences)
• Integrate and maintain CRM and lifecycle tooling (for example Iterable or similar), including catalogues, data feeds, deeplinks and email / in‑app templates
• Build internal tools, automations and scripts (for example in Python or Node) that connect systems, improve workflows and power pLTV, dashboards and alerting
• Collaborate closely with Growth, Marketing and Data to scope experiments and quickly ship A/B tests and campaigns that move key metrics
• Our Tech Stack
• Below you can find a small reflection of our current tech stack:
• Frontend:
• React Native (iOS and Android)
• Typescript
• GraphQL (Apollo Client)
• Fastlane
• SwiftUI (Apple Watch)
• Maestro E2E tests
• Backend:
• Serverless (AWS)
• Lambdas (NodeJS & Python)
• AWS AppSync
• DynamoDB, S3, SQS, SNS, EventBridge, SageMaker
• Snowflake
• All the other good stuff:
• Sentry
• GitHub Actions
• Intercom, Mixpanel
• RevenueCat
• App Store Connect / Play Store
• Google Tag Manager

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

• CRM or lifecycle platforms (email, push, in‑app messaging)
• Analytics and product analytics tools
• Mobile / web attribution
• Comfort working closely with non‑engineering partners (marketing, product, data) and translating business goals into technical solutions
• Tag managers and event tracking
• Strong TypeScript/JavaScript skills and experience with modern frontend frameworks (for example React / React Native)
• Solid experience as a full stack engineer (ideally 3+ years), comfortable working across frontend and backend
• Good understanding of event tracking, data quality and debugging issues across multiple platforms and tools
• A bias towards experimentation and iteration – you care about impact and learning fast
• Strong ownership mindset: you’re happy to take a problem from idea to shipped, monitored solution
• Hands‑on experience integrating and maintaining marketing technology such as:
• Experience with mobile growth and attribution (for example RevenueCat, app store / play store tooling, mobile attribution providers)
• Previous experience in a product‑led or consumer subscription business
• Experience with experimentation platforms and A/B testing
• Familiarity with AWS or another major cloud provider and modern CI/CD practices
• Experience working in or closely with a Growth / Marketing team