bsport

Senior Backend Engineer

In short

Senior Backend Software Engineer role at bsport, a Paris-based all-in-one booking/management platform for boutique fitness studios (200+ employees, €30M Series B, 7M+ users). The role is on the "Core" team, leading backend architecture for core data models, authentication, permissions, AI semantic layer, and subscription/retail systems, working with Python/Django, PostgreSQL, AWS, Kafka, RabbitMQ and observability tools (Grafana, ELK, Sentry). Requires substantial Python experience, large-scale system experience (tens of millions of users), technical leadership skills, and professional English; hybrid work with 3 office days per week.

Salary range: €72.000 - €115.000
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!
About the role
Joining our "Core" team means playing a crucial role in shaping the success of our engineering department by providing core data and capabilities to the different teams. Your team's focus areas will include:
•Administrating and providing core data models to the different bsport teams (client, studio and locations, franchise, namespaces overall)
•Develop the building blocks of our AI semantic layer, to power every other team AI-native features
•Provide and maintain core capabilities to other bsport teams like Authentication, our Permission system or a way for large franchise to administrate their studios
•Manage our Buyables offering by managing our subscription, webshop & retails, VOD and pass architecture
What will be your impact
As a Senior Backend Software Engineer, you will:
•Lead the design of services and event-driven architectures that handle high-volume data and ensure a balance between immediate product requirements, technical feasibility, and long-term scalability
•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 monitoring and improving the performance of backend services using Grafana, Prometheus, ELK, and Sentry
•Participate in our cross-team Backend & DevOps "squad," 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 Python (Django is a plus)
•You are comfortable challenging an implementation from the data model diagrams to the networking
•You have experience working at scale, serving dozens of millions of users
•You are, of course, professionally proficient in English
•You are not afraid of taking ownership to build exceptional products, including on design and product decisions
•You love domain-driven development, and understand interface purity has its limits
•You want to lead across boundaries, and scale your impact to the organisation
•You understand both how powerful and how dangerous AI-assisted workflows can be, and want to redefine the barriers of what is doable
What We Offer
•Attractive compensation package: Competitive salary packages based on your experience and role
•Work-Life harmony: Hybrid model with 3 days per week in the office
•Work from anywhere: Enjoy up to 15 days of remote work from abroad each year
•Exclusive perks: Stay active with a specially discounted HelloCSE membership
•Diverse fun loving team: Multicultural colleagues, after-work events, team-building & more

Stop applying.
Get referred.

$10 in free credits

In just 60 seconds, fully on autopilot — Eraldt's AI agents read your CV, map the roles you fit, find live vacancies and the people who can refer you, write personal emails, and get you referred.

This isn't an application: your CV doesn't go to the company, and we don't promise a referral for this exact role.

Discover who else lands interviews on autopilot