Senior Software Engineer - Circularity Order Lifecycle

Back Market; Paris; Hybrid; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Hybrid work policy

2 remote days per week

1 remote work week per quarter

3 flex days

Employee Resource Groups

Mentorship programs

Diversity & inclusion initiatives

Job summary

Back Market is seeking a Senior Software Engineer to join the Circularity Order Lifecycle squad in Paris. You will contribute across backend and frontend stacks, shipping features that streamline trade-ins, empower customers and refurbishers, and drive architectural improvements.

You’ll work in a hybrid model with 3 days in the Paris office, collaborating with an international team (US/FR/ES/JP) and a strong culture of ownership, learning, and impact.

Qualifications

• Versatile engineers with ownership and willingness to tackle cross-stack challenges.
• English is essential in an international team (US/FR/ES/JP).
• Experience with Python, FastAPI, SQLAlchemy, Celery, Golang; Django in transition.
• Frontend: VueJS, Typescript, Nuxt; Data: PostgreSQL, Redis, Kafka, RabbitMQ.
• Cloud/Linux infra: GCP, Kubernetes, Docker, CI/CD tools like CircleCI/Github.

Responsibilities

• Facilitate discussions on complex issues and advocate for good design.
• Improve existing designs and architecture for key projects.
• Explore new technologies with potential impact for the squad.
• Contribute to chaos mitigation and delivery prioritization.
• Collaborate across squads with engineers, designers, analysts and partners.

Skills

versatile

ownership

build it and run it

deliver UX at scale

Tools

Python

FastAPI

SQLAlchemy

Celery

Golang

Django

VueJS

Typescript

Nuxt

PostgreSQL

Redis

Kafka

RabbitMQ

BigQuery

GCP

Kubernetes

Docker

Datadog

ArgoCD

CircleCI

Github

Job description

Hi, we’re 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.

Yep, you read that right. Turns out refurbished tech is way better for the planet than new. In fact, With every device purchased on Back Market, our positive impact on the planet grows. From our Customer Care representatives to our software engineer, every individual at Back Market cuts the planet — and consumers — a break. Our mission is simple: to do more with what we already have.

Are you ready to join us?

About the team

We are looking for a Senior Software Engineer to join our Circularity Order Lifecycle squad.

We’re the team behind Back Market’s Trade‑in program, the system that lets customers exchange their old devices for cash toward their next refurbished purchase. It’s a win‑win‑win: customers get more purchasing power, refurbishers get quality supply, and the planet gets a break from unnecessary e‑waste.

To achieve this, our team is made up of seven engineers, an engineering manager and a product manager collaborating closely with designers, data analysts, operations and business partners.

Join us and help build the features that make it easier for customers and refurbishers to complete successful trade‑in journeys.

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.

What you will do in this role

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).

**Our 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

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 modernize 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. But 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.

As a Senior 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 advocate for prioritization of tasks that can optimise delivery

Recruitment process

• Call with a Senior Tech TA, 45 min




• Coding and Testing module, 60 min




• System design Feature interview, 45 min




• Data module, 45 min




• Technical Leadership, 45 min




• Meet your manager, 30 min




• Back Market Values fit interview - 45 min

Hybrid policy - Paris office

3 days / week at the office - Monday is mandatory

WHY SHOULD YOU JOIN US ?

At Back Market, we’re committed to hiring and supporting diverse teams of people from all backgrounds, experiences, and perspectives — it’s one of the reasons we’re such a high‑scoring certified B Corp company (93.2).

No matter your role and seniority level, you’ll enjoy impact‑driven work with hands‑on career development in an innovative, driven, and fast‑paced environment — with benefits to match, like:

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




• 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.

At Back Market, we strive to create a workplace that embodies the world we’re trying to change. We’ve embedded our diversity, equity, and inclusion principles into our DNA — from dedicated staff to employee resource groups to our company values.

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.