bsport

Senior Backend Engineer - Payments

In short

Senior Backend Software Engineer role on the Financial Services team of bsport, a boutique fitness SaaS platform, building a scalable payment and invoicing engine (500k€/day payment stack) and expanding financial offerings across geographies. Requires substantial experience in an OO backend language, significant background in a compliance-heavy industry (accounting, payments, health-tech), and experience operating at scale with multiple third-party integrations; the team's stack includes Python, Django, PostgreSQL, AWS, RabbitMQ, Kafka, and observability tools like Grafana and Kibana. Hybrid role based in Barcelona with 3 days per week in office, offering €65,000-€108,000.

About bsport
We are bsport. The place to be!
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.
Since we launched in 2019, we have already achieved the following:
•We've built a community of over 7 million users
•In December 2024 we have finalised the biggest Series B (€30 million)
•Grown our team to more than 200 employees
•Experienced strong worldwide growth (75% YoY) and rapid geographical expansion (+20 countries)
We're continuing to grow to become the #1 tech partner for boutique studios in Europe and the rest of the world!
Join us to write the next chapter of your career!
Salary range: €65.000 - €108.000
About the role
Joining our "Financial Services" team means playing a crucial role in shaping the success of our engineering department by providing all the tools for bsport to become client's financial partner. Your team's focus areas will include:
•Provide a scalable payment and invoicing engine to our clients (500k€/day payment stack)
•Bill our clients and manage the access of bsport features based on various geographies and client profiles
•Expand bsport financial offering (payment methods, payroll services, financial agents) to various client types and geographies
What will be your impact
As a Senior Backend Software Engineer, you will:
•Lead the design of complex features and event-driven architectures that handle high-volume data and ensure a balance between immediate product requirements, technical feasibility, and high availability.
•Write robust, efficient, and maintainable code and implement best practices for code reviews, testing, and continuous integration & delivery.
•Provide technical leadership and share knowledge with less experienced engineers and foster a culture of continuous learning, collaboration, and innovation.
•Work closely with Data, Product, and DevOps teams to deploy and maintain cutting-edge solutions and align technical strategy with business goals, ensuring each release adds measurable value.
•Continuously monitor and improve the performance of backend services using Grafana, Prometheus, ELK, and Sentry.
•Participate in our cross-team Backend & DevOps chapters, providing innovative solutions and improvements to our stack (Grafana, Kibana, PostgreSQL, AWS, RabbitMQ, Kafka, Django, Django Rest Framework), advocating for best practices in observability, monitoring, and alerting to ensure systems run at peak efficiency.
You would be a great fit if you have
•Substantial experience in any current Object-Oriented backend language (familiarity with Python and Django is a plus)
•Significant experience in a compliance-heavy industry (Accounting, payment, Health-tech...)
•Experience working at scale, serving dozens of millions of users
•Comfort managing systems and data models that federate multiple third parties (ex: integrate multiple payment service providers)
•Love for domain-driven development, but understanding how to make trade-offs with it
•Understanding of both how powerful and how dangerous AI-assisted workflows can be, and a desire to redefine the barriers of what is doable
•No fear of taking ownership to build exceptional products, including on design and product decisions
•Professional proficiency in English
•Ownership and pride in building exceptional products
•Detail-oriented, organized, and an effective communicator
•Thrive in dynamic, fast-paced environments and enjoy being challenged
If 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.
What We Offer
We believe great work comes from happy, supported people - that's why we offer meaningful perks designed to promote balance, growth, and connection.
•Attractive compensation package: Competitive salary packages based on your experience and role.
•Work-Life harmony: Hybrid model with 3 days in the office per week.
•Work from anywhere: Enjoy up to 15 days of remote work from abroad each year.
•Private health insurance: Fully-funded Alan private health coverage.
•Exclusive fitness perks: Specially discounted access to Wellhub.
•Flexible remuneration: Enjoy tax reductions thanks to Alan Flex.
•Diverse fun loving team: Multicultural colleagues, after-work events, team-building & more.

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