Growth & Conversion: Senior Software Engineer

Runna; Greater London; On-site; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Stock options

Own a part of Runna

Career growth and shaping product

Team socials

25 vacation days + bank holidays

Equipment provided

Get paid to Run weekly

Enhanced family care

Job summary

Runna is seeking an Architect to build and ship high impact user journeys and subscription funnels. You will design and run experiments across web and app—onboarding, paywalls, plan discovery—to improve conversion at every step.

You will work with Product, Design and Data to prioritise opportunities, define success metrics, and decide based on experiment results, while collaborating across teams to ensure a smooth cross-product experience.

Qualifications

• 3+ years of frontend or full stack development with modern web technologies.
• Experience building user-facing product surfaces where conversion and UX matter.
• Familiarity with experiments, analytics tools, and growth-focused development.

Responsibilities

• Architect, build, test and ship high impact user journeys and subscription funnels, focusing on conversion.
• Design and run experiments across web and app to improve onboarding, paywalls, and discovery.
• Collaborate with Product, Design and Data to prioritise opportunities and define success metrics.

Skills

React

TypeScript

JavaScript

Experimentation

Frontend development

Product thinking

Tools

React Native

GraphQL

AWS Lambda

Sentry

GitHub Actions

SQS

DynamoDB

S3

Mixpanel

Intercom

RevenueCat

Job description

Runna is seeking an Architect to build and ship high impact user journeys and subscription funnels. You will design and run experiments across web and app—onboarding, paywalls, plan discovery—to improve conversion at every step.

You will work with Product, Design and Data to prioritise opportunities, define success metrics, and decide based on experiment results, while collaborating across teams to ensure a smooth cross-product experience.