Senior Backend Engineer (Mobile Monetization) | Feeld

<p><strong><a href="https://jobicy.com/company/gt" target="_blank" rel="nofollow noopener">GT</a> was founded in 2019 by a former Apple, Nest, and Google executive.</strong> GT’s mission is to connect the world’s best talent with product careers offered by high-growth companies in the UK, USA, Canada, Germany, and the Netherlands.</p> <p>On behalf of <strong>Feeld</strong>, GT is looking for <strong>a Senior Backend Engineer</strong> to help them improve their inclusive dating application.</p> <h3><strong>About the Client</strong></h3> <p>Founded in 2014 as a dating app, <strong>Feeld</strong> gathered millions of users in one place to create a safer and more inclusive space online for everyone open to experiencing people and relationships in a new way. Their mission is to elevate the human experience of sexuality and relationships and create a world where everyone is more intimately connected to each other and themselves.</p> <p><strong>The technology stack of the project:</strong> Node.js, NestJS, GraphQL/REST, TypeScript, AWS, DynamoDB, PostgreSQL, SQS, EventBridge, WebSockets.</p> <h3><strong>About the Role</strong></h3> <p>We are looking for a <strong>Senior Backend Engineer (Mobile Monetisation)</strong> to take ownership of the backend systems powering Feeld's subscription and in-app purchase experiences across iOS and Android.</p> <p>The ideal candidate brings <strong>strong hands-on experience with mobile monetisation platforms such as Adapty, RevenueCat, or similar solutions</strong>, as well as integrating mobile payment flows with custom backend services. This includes managing subscription lifecycles, synchronising payment data, handling receipts, and ensuring accurate entitlement management.</p> <p>We're looking for a <strong>highly experienced, proactive engineer with the potential to act as a technical lead</strong>, capable of independently driving complex technical initiatives, contributing to architectural decisions, and ensuring the reliability and scalability of revenue-critical systems.</p> <p>📌 Full-time, long-term<br>⌛️ Preferred immediate start</p> <h3><strong>Responsibilities:</strong></h3> <ul> <li> <p>Take ownership of the backend systems supporting Feeld’s monetisation, ensuring their reliability, performance, and contribution to business goals.</p> </li> <li> <p>Design, develop, and maintain scalable backend services and integrations for subscriptions, billing, payment processing, entitlements, pricing, and promotional features.</p> </li> <li> <p>Ensure the accuracy, stability, and reliability of monetisation flows, proactively identifying and resolving production issues that could impact revenue or user experience.</p> </li> <li> <p>Support the development and optimisation of subscription and payment flows, including improvements to system performance, scalability, and error handling.</p> </li> <li> <p>Implement and maintain feature flags, testing, and analytics instrumentation to support experimentation and continuous improvement of monetisation features.</p> </li> <li> <p>Collaborate with Product, Engineering, and Data teams to build and improve analytics and reporting capabilities, providing insights into revenue performance, user behaviour, and system health.</p> </li> </ul> <h3><strong>Essential knowledge, skills &amp; experience:</strong></h3> <ul> <li> <p><strong>5+ years of commercial backend development experience</strong>, ideally building high-load, business-critical systems.</p> </li> <li> <p><strong>Proven experience with mobile monetisation and subscription platforms</strong>, such as Adapty, RevenueCat, or comparable solutions.</p> </li> <li> <p><strong>Hands-on experience implementing mobile in-app purchases and subscription flows</strong> for iOS and/or Android applications, beyond web-based payment integrations.</p> </li> <li> <p><strong>Experience integrating mobile payment platforms with custom backend systems</strong>, including payment data synchronisation, receipt handling, subscription status tracking, and entitlement management.</p> </li> <li> <p>Strong understanding of <strong>mobile subscription and payment lifecycles</strong>, including renewals, cancellations, refunds, failed payments, and subscription state changes.</p> </li> <li> <p>Experience ensuring the <strong>accuracy, reliability, and consistency of revenue-critical backend systems</strong>, including troubleshooting production issues.</p> </li> <li> <p>Strong backend development experience with <strong>Node.js or TypeScript or JavaScript</strong>, ideally using NestJS and building GraphQL or REST APIs.</p> </li> <li> <p>Good understanding of <strong>event-driven architectures, asynchronous processing, and distributed systems</strong>.</p> </li> <li> <p>Experience writing reliable <strong>unit and integration tests</strong>.</p> </li> <li> <p>Strong technical ownership, independent problem-solving, and architectural decision-making skills, with the <strong>potential to take on technical leadership responsibilities</strong>.</p> </li> <li> <p>Strong communication skills and <strong>full professional proficiency in English.</strong></p> </li> </ul> <h3>Nice to Have</h3> <ul> <li> <p>Experience with <strong>AWS cloud infrastructure</strong>, SQL and NoSQL databases. Our current stack includes ECS, DynamoDB, SQS, EventBridge, and PostgreSQL.</p> </li> <li> <p>Experience working directly with <strong>Apple App Store and Google Play billing ecosystems</strong>.</p> </li> <li> <p>Experience running <strong>monetisation experiments</strong>, including A/B testing, subscription pricing changes, and conversion optimisation.</p> </li> <li> <p>Experience managing <strong>regional pricing, multiple currencies, and country-specific monetisation strategies</strong>.</p> </li> <li> <p>Experience analysing the performance of monetisation experiments, including revenue, subscription conversion, and retention metrics.</p> </li> <li> <p>Previous experience acting as a <strong>Tech Lead or Lead Backend Engineer</strong>, mentoring engineers, and driving technical decisions.</p> </li> </ul> <h3><strong>Interview Steps</strong></h3> <ol> <li> <p>GT interview with Recruiter</p> </li> <li> <p>GT technical interview</p> </li> <li> <p>Client technical interview</p> </li> <li> <p>Final interview</p> </li> <li> <p>Reference Check</p> </li> <li> <p>Offer</p> </li> </ol>

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