Senior Back-End Developer in London

We are building an inclusive, human-centred product and are looking for a Senior Backend Monetization Engineer to become part of our remote team and our mission to elevate the human experience of sexuality and relationships.

You will be responsible for designing, building, and operating scalable, secure backend systems that power the company’s revenue-generating experiences to ensure monetisation flows are reliable, compliant, observable, and performant at scale. You'll own the health of our monetisation funnel and be responsible for the reliability and performance of the systems that keep Feeld sustainable.

Design and maintain scalable backend systems that support integrations related to subscriptions, billing, entitlements, pricing logic, and promotional mechanics as the user base grows. Enable faster experimentation by supporting feature flags, testing, and analytics instrumentation across monetisation systems. In partnership with the Data team, build and maintain analytics and reporting capabilities that provide insight into revenue performance, user behavior, and system health. Develop advanced skills in system observability, monitoring, and incident response for high-throughput financial workloads. Expand your knowledge of analytics infrastructure, experimentation frameworks, and data-driven product development.

You have experience designing, building, and maintaining backend services that handle high-throughput, business-critical workloads such as payments, subscriptions, or financial systems. You are comfortable working with databases, APIs, and ensuring data integrity and security in production environments. You approach problems with curiosity and systems thinking, balancing technical excellence with business impact and user experience.

Bonus points:

• You have experience building or maintaining subscription platforms, billing systems, or working directly with payment providers like Adapty, Stripe, RevenueCat, or Apple/Google in-app purchase APIs.
• You have worked with analytics pipelines, experimentation frameworks, or feature flagging systems to support data-driven product decisions.
• You have mentored other engineers or led technical initiatives that improved system reliability, performance, or developer experience.
• You have experience with mobile backend integration or supporting cross-platform monetisation flows across iOS, Android, and web.

Feeld is an independent, experimental and fully remote organisation reshaping the dialogue on dating and sexuality. We have a naturally agile and fluid culture. The whole team is fully remote, which means you work where and when helps you perform at your best. We believe in creating a safe work environment through humanity, fluidity, safety, transparency and progressiveness. Because we are a fully remote team, it’s especially important that we create an environment where our colleagues feel included and connected as humans.

Diversity, equity, inclusion and belonging at Feeld:

Feeld promotes open-mindedness, inclusion, diversity and kindness, both in the world and among our own workforce. We encourage and welcome applications from people with a history of marginalisation, whether because of race, gender expression or identity, sexual orientation, neurodivergence, national origin, disability (seen or unseen) or any confluence of intersectional identities.

Compensation and perks:

• Flexible working hours
• Unlimited paid time off
• A fully remote working situation
• Home office budget
• On demand therapy sessions and mental health support via Spill

Our compensation system is one of the ways we work to uphold equity and inclusion at Feeld. That is why we offer a compensation system that is transparent, honest, and equitable. Additionally, we believe all humans deserve to earn a competitive wage, so we offer a Baseline Freedom Salary of £60,000 GBP per year for any role that indexes below £60,000 GBP per year. Estimated compensation for this role: ~ The total cash compensation for this role is dependent on Level and Step, as well as geographic location, but we estimate that the competitive market compensation for this role is between £75,000 - £110,000 GBP based on the requirements listed in this job description.

This conversation will also focus on your past work experiences. We generally make an offer within 2 weeks of our final call, and offer a flexible start date that can begin as early as the next Monday after you sign our offer documentation. Of note: all of our interviews are conducted remotely, and our interviewers will work with you to find an agreeable interview time based on mutual availability.

To find out more about Feeld, download our app (available on iOS and Android).