Senior Backend Engineer - Payments

bsport; Barcelona; On-site; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Hybrid model: 3 days in-office

Remote work up to 15 days abroad

Private health insurance (Alan)

Wellhub fitness perks

Tax-efficient remuneration (Alan Flex)

Multicultural team & events

Job summary

bsport is hiring a Senior Backend Software Engineer to join the Financial Services team and craft a scalable payment and invoicing engine for clients worldwide. You will lead feature design, drive architecture decisions, and collaborate with Data, Product, and DevOps to deliver reliable, high-availability services.

You will mentor peers, implement best practices for testing, CI/CD, and observability, and help expand bsport's financial offerings across geographies with diverse client profiles.

Qualifications

• Experience in a compliance-heavy industry such as accounting, payments or health-tech.
• Experience at scale, serving millions of users.
• Experience integrating multiple payment providers.
• Preference for domain-driven development with practical trade-offs.
• Fluent English communication and strong ownership.
• Ability to lead and mentor other engineers.

Responsibilities

• Lead the design of complex features and event-driven architectures for high-volume data.
• Write robust, efficient code and uphold CI/CD and testing standards.
• Provide technical leadership and mentorship to the team.
• Collaborate with Data, Product and DevOps to deploy innovative solutions.
• Monitor and improve backend performance using observability tools.

Skills

Object-Oriented backend language

Python

Django

English

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 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 monitoring and improving 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 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 have experience working at scale, serving dozen of millions of users

• You are comfortable on managing systems and data model that federate multiple third parties (ex: integrate multiple payment service provider …)

• You love domain-driven development, but understand how to make trade-offs with it.

• 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 not afraid of taking ownership to build exceptional products, including on design and product decision.

• 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.

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 harmonyHybrid model with 3 days in the office per week

Work from anywhereEnjoy up to 15 days of remote work from abroad each year.

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

Exclusive fitness perksStay active with a specially discounted access to Wellhub.

Flexible remunerationEnjoy tax reductions thanks to Alan Flex

Diverse fun loving teamMulticultural colleagues, after-work events, team-building & more.