Senior Software Engineer - Order Management System, Paris

About Back Market We’re here to help make tech reliable, affordable, and better than new. We're a global marketplace for refurbished devices, helping lower our collective environmental impact by providing trustworthy, affordable tech with 92% less carbon emissions than new.

Our mission is simple: to do more with what we already have.

Our technology department, known as the Bureau of Technology (BoT), is at the heart of Back Market. It consists of over 30 dynamic product teams that are engaged in developing and managing services to deliver significant value to our customers and suppliers. These teams are effectively supported by our Platform group, which includes more than 10 specialized teams addressing cross-cutting technical issues to enhance our operational capabilities.

In addition to these functional teams, we have established numerous groups dedicated to sharing knowledge across various technical disciplines, such as security, backend, frontend, AI, and mobile. These groups serve as hubs for collaboration and professional development, providing ample learning opportunities and fostering a culture of continuous improvement.

About the Team The Order Management squad ensures that transactions are facilitated swiftly and accurately by evolving the end-to-end order lifecycle; enabling new products, partnerships, and services while simultaneously embedding taxes, fee management, and money return processes as integrated parts of an Order Management System.

Responsibilities As a Software Engineer, you will work closely with all members of your squad, and the Staff engineer of your group. Bi‑monthly rituals with your group and the Chapter will allow you to share what works for your squad, learn what works for others, and make sure your technical direction is aligned with the overall vision.

We’re looking for versatile engineers who show strong ownership and are motivated to take on new challenges across the technical stack while helping us move our technology forward. You will be working in an agile "build it and run it" environment where engineering teams build, launch, monitor, and support the product that they own. Driven by the desire to craft outstanding products, you understand how to deliver seamless user experiences at scale. We are looking for passion in creating systems by producing clean, consistent, and well‑organised code. As well as a good team player supporting colleagues and creating a learning and sharing environment!

English must be a no‑brainer as you will join an international team dispatched in different locations around the world (US/FR/ES/JP).

Main Technical Challenges Traditionally based on a monolith, Back Market's technical stack has been undergoing a radical transformation in recent years into a distributed and service‑oriented architecture. This transition provides an opportunity to modernise the platform, raising engineering standards. Building a set of efficient and loosely coupled services is one of the main challenges to face for the years to come. Teams are excited to independently control their release schedules, manage their data, SLAs, tools, and ultimately be responsible for their own service‑offering. Meanwhile, Platform teams are working to provide a scalable, consistent and secure platform, one that makes engineering teams more productive.

Technical Environment Backend stack: Python – FastAPI, SQLAlchemy, Celery, Golang, Django (being phased out)

Frontend stack: VueJS, Typescript, Nuxt, Revolve (our design system)

Data: PostgreSQL, Redis, Kafka, RabbitMQ, BigQuery

Infrastructure: GCP, Kubernetes, Docker, Datadog, ArgoCD, CircleCI, Github

Senior I Engineer: Produce, Innovate&Share

Facilitates meaningful discussions around complex issues.

Suggests or makes improvements for existing designs and architecture for quarter‑bounded projects or mission‑critical areas in their squad.

Explores technologies with sizable potential impact for the team.

Is able to contribute actively to high‑impact chaos mitigation.

Identifies and advocates for prioritization of tasks that can optimise delivery.

Backend (Senior)

5+ years backend development experience.

Strong system design skills.

Experience with microservices, distributed systems.

Deep understanding of data architecture and APIs.

Experience with performance optimisation and scalability.

Fullstack Mindset

End‑to‑end product thinking.

Curiosity about the full stack.

Strong collaboration and communication skills.

Ability to navigate ambiguity across technical domains.

Recruitment Process

HR screening– 1h

Coding&Testing module– Backend (60 min)

System design feature– 60 min

Data module– 45 min

Tech leadership + Meet your manager– 75 min

BM Values– 45 min

Benefits

A mission‑driven work environment where your day‑to‑day makes an impact on the planet.

Hybrid work environment, with 2 remote days a week and 1 remote work week per quarter, plus 3 flex days.

Employee Resource Groups, including mentorship programs, comprehensive accessibility policies, and cultural competency training.

We know that the perfect background for a role doesn’t mean the perfect fit — we encourage you to apply for a role even if you think you may not have all the qualifications.

If reasonable accommodations are needed for the interview process, please do not hesitate to discuss this with the Talent Acquisition Team.

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