ppbWe are bsport. The place to be! /b bsport is an all-in-one platform combining boutique fitness and advanced technology. Our platform helps our partners manage their bookings, payroll, marketing and more to streamline operations and boost their commercial success. /p pSince we launched in 2019, we have already achieved the following: /p ul liWe’ve built a community of over 7 million users /li liIn December 2024 we have finalized the biggest Series B (€30 million) /li liGrown our team to more than 200 employees /li liExperienced strong worldwide growth (75% YoY) and rapid geographical expansion (+20 countries) /li /ul pWe’re continuing to grow to become the #1 tech partner for boutique studios in Europe and the rest of the world! /p pJoin us to write the next chapter of your career! /p h3About The Role /h3 pYou'll take ownership of the backend behind a set of new member-facing gamification and engagement features in our white-labeled, premium branded mobile app, shipping capabilities to over 500k monthly active users and driving growth for our B2B clients. This is greenfield, high-ownership work: new services and data models built on top of a large, existing product dataset. /p h3What this mission offers? /h3 ul liA varied, high-ownership mission at the core of the product, with direct impact in the short and medium term. /li liA modern stack and real architectural challenges, such as new data models, event‑driven systems, privacy by design. /li liA high‑growth context with an engaged team and strong engineering standards. /li liIntegrate with background/event‑driven processing and notifications. /li liEnsure everything you build is scalable, reliable, and well‑tested, end‑to‑end.



/li /ul h3What Will Be Your Impact /h3 ul liDesign and build new backend services and data models that power upcoming features in our mobile app. /li liDesign new relational models from the ground up: weigh architecture options, align with our core team, and document decisions (ADRs). /li liBuild and evolve the APIs / BFF endpoints consumed by the mobile app. /li liWork with large volumes of existing product data to power new experiences, including backfills and migrations on high‑volume tables. /li liTreat privacy and data protection (GDPR) as a first‑class concern, opt‑in flows, and safe multi‑tenant data handling. /li liIntegrate with background/event‑driven processing and notifications. /li liEnsure everything you build is scalable, reliable, and well‑tested, end‑to‑end. /li /ul h3You would be great fit if you have: /h3 ul liStrong experience with Python (Django) and PostgreSQL at scale. /li liGenuine data‑modeling depth, comfortable designing new relational models and running migrations on large, high‑volume tables. /li liYou thrive in ambiguity taking ownership of greenfield systems from day one. You explore the options, capture your reasoning in ADRs, and rally adjacent teams around a shared direction. /li liRigorous about code quality, able to move fast without cutting corners on maintainability. /li liStrong communication skills in English. /li liBackground in a startup or scale‑up, ideally B2B SaaS.



/li /ul h3Nice to have /h3 ul liExperience with consumer/member‑facing products. /li liExperience with security- and privacy‑sensitive features (GDPR, multi‑tenant data isolation); able to reason about where data can leak and design against it. /li liSome React Native experience, to collaborate closely with our mobile engineers and occasionally contribute on the client side. /li /ul pDiversity is one of our most valuable assets, and we are committed to fostering an inclusive environment where everyone can contribute their best work. We welcome applicants from all backgrounds, identities, and experiences to help us build a more inclusive, equitable team. /p pIf you’re excited about this role but don’t meet every qualification, we encourage you to apply; curiosity, adaptability, and a willingness to learn are just as important to us as specific skills. /p h3What We Offer /h3 pWe believe great work comes from happy, supported people – that’s why we offer meaningful perks designed to promote balance, growth, and connection. /p ul liAttractive compensation package – competitive salary packages based on your experience and role. /li liWork‑life harmony – hybrid model with 3 days in the office per week. /li liWork from anywhere – enjoy up to 15 days of remote work from abroad each year. /li liPrivate health insurance – we offer fully‑funded Alan private health coverage. /li liExclusive fitness perks – stay active with discounted access to Wellhub. /li liFlexible remuneration – enjoy tax reductions thanks to Alan Flex. /li liDiverse fun‑loving team – multicultural colleagues, after‑work events, team‑building more. /li /ul /p #J-18808-Ljbffr

📌 Senior Backend Engineer - Freelance (Barcelona)
🏢 bsport
📍 Barcelona