Full Stack Developer (Growth / Payments)

Axel Partners
Charing Cross, United Kingdom
6 days ago

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English
Experience level
Senior
Compensation
£ 110K

Job location

Remote
Charing Cross, United Kingdom

Tech stack

JavaScript
A/B testing
Data analysis
Application Integration Architecture
Software as a Service
Payment Systems
Google Analytics
TypeScript
Web Performance Optimization
Google Tag Manager
Stripe
Webhooks

Job description

We are hiring a Full Stack Developer to support growth-related engineering work, with a focus on payment systems, subscriptions, and user conversion flows.

The role involves working closely with the Growth team to build and maintain systems such as paywalls, subscription logic, analytics tracking, and experimentation tools., Payments & Subscriptions

  • Build and maintain Stripe subscription systems, including billing flows, webhooks, upgrades, and payment failure handling
  • Support Razorpay integration for payment processing, including UPI and subscriptions
  • Develop and maintain entitlement and access control logic

Growth & Conversion Systems

  • Implement paywalls and conversion-related features
  • Support A/B testing and experimentation setup
  • Contribute to feature flagging or testing frameworks

Analytics & Tracking

  • Implement GA4 and Google Tag Manager (GTM) tracking
  • Support funnel tracking and event instrumentation

Web & Marketing Support

  • Support development of marketing websites and landing pages
  • Assist with SEO-related technical implementation and programmatic pages

Requirements

  • 5+ years of experience as a Full Stack Developer
  • Strong experience with JavaScript and/or TypeScript
  • Experience implementing Stripe subscription or billing systems in production
  • Experience with A/B testing tools or feature flag systems
  • Experience with GA4 and GTM implementation
  • Experience integrating APIs and working with web performance considerations
  • Understanding of technical SEO principles

Preferred Experience

  • Experience with payment systems in multiple regions (e.g., Stripe, Razorpay)
  • Experience working in growth, analytics, or marketing-related engineering teams
  • Experience with experimentation platforms or conversion optimisation systems, * Do you have 5+ years of full-stack development experience? (Yes/No)
  • Have you implemented Stripe subscriptions in production? (Yes/No)
  • Do you have experience with GA4 and Google Tag Manager? (Yes/No)
  • Have you built or used A/B testing or feature flag systems? (Yes/No)
  • Do you have experience with SaaS or subscription-based products? (Yes/No)
  • Are you comfortable working fully remote in a fast-paced environment? (Yes/No)

Benefits & conditions

  • This role involves close collaboration with product and growth teams
  • Work is focused on improving user conversion and payment systems
  • Remote working environment

Compensation & Benefits

  • Competitive compensation aligned with EU market standards
  • Remote-first working setup
  • Flexible, async-friendly working environment

Why this version avoids flagging:

  • Removes aggressive/marketing phrases ("revenue engineering", "own the entire stack")
  • Keeps responsibilities factual and role-based
  • No exaggerated performance claims or buzzwords
  • Clear structure aligned with Indeed formatting expectations
  • Neutral tone throughout

Pay: £70,000.00-£110,000.00 per year

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