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Senior Backend Engineer (Mobile Monetization) | Feeld

Poland - Remote. Posted 12 days ago

The role

This person will take ownership of backend systems powering Feeld's subscription and in-app purchase experiences on iOS and Android. They will design, develop, and maintain scalable backend services for billing, payment processing, and entitlements.

What you will do

  • Take ownership of backend systems supporting Feeld's monetisation.
  • Design, develop, and maintain scalable backend services for subscriptions, billing, and payment processing.
  • Ensure accuracy and reliability of monetisation flows.
  • Support development and optimisation of subscription and payment flows.
  • Implement and maintain feature flags, testing, and analytics instrumentation.
  • Collaborate with Product, Engineering, and Data teams to improve analytics and reporting.

Required qualifications

  • 5+ years of commercial backend development experience.
  • Proven experience with mobile monetisation and subscription platforms, such as Adapty, RevenueCat, or comparable solutions.
  • Hands-on experience implementing mobile in-app purchases and subscription flows for iOS and/or Android applications.
  • Experience integrating mobile payment platforms with custom backend systems.
  • Strong understanding of mobile subscription and payment lifecycles.
  • Experience ensuring the accuracy, reliability, and consistency of revenue-critical backend systems.
  • Strong backend development experience with Node.js or TypeScript or JavaScript.
  • Good understanding of event-driven architectures, asynchronous processing, and distributed systems.
  • Experience writing reliable unit and integration tests.
  • Strong technical ownership, independent problem-solving, and architectural decision-making skills.
  • Full professional proficiency in English.

Nice to have

  • Experience with AWS cloud infrastructure, SQL and NoSQL databases.
  • Experience working directly with Apple App Store and Google Play billing ecosystems.
  • Experience running monetisation experiments, including A/B testing, subscription pricing changes, and conversion optimisation.
  • Experience managing regional pricing, multiple currencies, and country-specific monetisation strategies.
  • Experience analysing the performance of monetisation experiments.
  • Previous experience acting as a Tech Lead or Lead Backend Engineer, mentoring engineers, and driving technical decisions.

Before you apply

  • GT interview with Recruiter
  • GT technical interview
  • Client technical interview
  • Final interview
  • Reference Check

About the company

GT connects the world's best talent with product careers in the UK, USA, Canada, Germany, and the Netherlands. Feeld is a dating app that aims to create a safer and more inclusive space for people to experience relationships.