Senior Backend Engineer - Payments

Bsport; Paris; Hybrid; EUR 70,000 - 110,000; Full time

Benefits offered by this job

Attractive compensation

Hybrid work model

Remote work abroad up to 15 days/year

Alan private health insurance

Wellhub fitness perks

Alan Flex tax benefits

Diverse team events

Job summary

bsport is seeking a Senior Backend Software Engineer to shape the engineering department and build a high-volume, compliant payment and billing stack. You will design microservices and event-driven architectures, work with data, product, and DevOps teams, and balance immediate needs with long-term scalability.

You will mentor engineers, enforce testing and CI/CD, monitor systems with Grafana, Prometheus, ELK and Sentry, and help expand our platform to new markets while embracing domain-driven

Qualifications

• Substantial experience with object-oriented backend development.
• Experience in a compliance-heavy industry (finance, payments, health-tech).
• Familiarity with Python and Django is a plus.
• Strong communication and leadership in technical contexts.

Responsibilities

• Lead the design of microservices and event-driven architectures for high-volume data.
• Write robust, maintainable code and enforce CI/CD and testing best practices.
• Provide technical leadership and mentor engineers across teams.
• Collaborate with Data, Product and DevOps to deploy scalable solutions.
• Monitor and optimize backend performance with Grafana, Prometheus, ELK and Sentry.
• Contribute to Backend & DevOps chapter improvements and observability.

Skills

Object-Oriented Backend

Python

Django

English

System design

Tools

Grafana

Prometheus

ELK

Sentry

PostgreSQL

AWS

RabbitMQ

Kafka

Django Rest Framework

Job description

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!

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 financial support and capabilities to our clients (500k€/day payment stack)

• Generate billing to our clients based on flexible subscription (geography / functionalities

• Expand bsport offering to new markets (countries, payment methods)

What will be your impact:

As a Senior Backend Software Engineer, you will:

• Lead the design of microservices 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 "chapter," 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 great fit if you have:

• You have substantial experience in any current Object-Oriented backend language (familiarity with Python and Django is a plus)

• You have a significant experience in a compliance-heavy industry (Accounting, payment, Health-tech...)

• You are confortable on challenging a implementation from the data model diagrams to the networking

• You have experience working at scale, serving dozen of millions of users

• You love domain-driven development, and understands interface purity has its limit.

• You understand both how powerful and how dangerous AI-assisted workflows can be, and want to redefine the barriers of what is doable

• You are professionally proficient in English

• You take ownership and pride in building exceptional products

• You’re detail-oriented, organized, and an effective communicator

• You thrive in dynamic, fast-paced environments and enjoy being challenged

Diversity 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.

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
We offer fully-funded Alan private health coverage so you can focus on what matters most.

Exclusive fitness perks
Stay active with a 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.