Senior Backend Engineer

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Senior Backend Engineer

Job ID: 21218905
Date: October 30, 2024
Job function:
Location: Paris, FR

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Back Market is the world’s leading refurbished electronics marketplace with a team of more than 650, powering operations in 18 countries (and counting!).
Back Market is undergoing meteoric growth and has raised $884 million, with a valuation of $5.7 billion. Our mission is simple: empowering people to buy tech sustainably by offering folks a high-quality, accessible, and more eco-friendly alternative to buying new electronics. Why? Refurbished tech helps lower our collective environmental impact.
Be part of a great and growing adventure that will change the way the world consumes tech.
Our engineering department, the Bureau of technology
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.
Our staff engineers also play a pivotal role throughout the company, lending their expertise across different domains. They provide leadership and technical guidance, promoting alternative career paths for growth beyond traditional management roles.
As a Senior Backend 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 Backend 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.
To know more about our Tech team, composed today of about 300 people, you can consult:
– A video of our CTO (ex- VP of Engineering): https://urlz.fr/kyX6
– Our Career Site: https://jobs.backmarket.com/
– Some articles written by member of the BoT: https://urlz.fr/kyX8
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 Backend Engineer, the challenge is three-fold:
Ensure a seamless transition with zero downtime and no revenue loss
Reduce complexity while increasing adaptability of the codebase in the context of new country openings
Guarantee high performance and reliability of production environments
Our technical environment
Application
Python – FastAPI framework
SQLAlchemy
Celery
Golang
Django (being phased out)
Data
PostgreSQL
Redis
Kafka
RabbitMQ
BigQuery
Infrastructure
GCP
Kubernetes (GKE) / Docker
Datadog
ArgoCD / CircleCI / Github
What you will do in this role 🕵️
We are looking for a Senior Backend Engineerto help us build & operate a set of efficient, high cohesion, low coupling services with security and privacy by design in order to support the growth of the business.
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. 
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)

As a 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 migration.
  • Identifiesand advocate for prioritization of tasks that can optimize delivery

Recruitment process

  • Call with Ana one of our tech talent acquisition specialists.
  • Coding & Testing interview- 1hour
  • System Design & Data interview- 45 minutes each part
  • Tech Leadership interview- 1 hour
  • Coffee chat with your possible EM.
  • Back Market Values fit interview
* Why join us ? *
– A meaningful job: you will help avoid thousands of tons of electronic waste and fight against planned obsolescence. It counts!
– A meaningful company: we became a mission-driven company in January 2022.
– Be part of a worldwide growing company based in Europe, the USA and Asia to face great challenges : you will have the freedom to innovate and adopt new ideas!
– Work alongside passionate experts:  who will share their knowledge and help you develop and grow in your career. 
– Grow your career: with a flexible career path and a dedicated Learning & Development team. Back Market will help you evolve with personalized internal trainings and external handpicked providers from day 1!
– Leadership Academy by Back Market:“be a coach not a dictator” is at the core of this program ! We train and enable all our leaders to support their team towards achieving goals. Be a manager at Back Market is an unique experience we take by heart.
– An attractive salary, equity and a host of benefits including : Lunch voucher, health insurance, relocation package, paid time off for activism in your community, parental benefits, flexible hours, etc…
– One Loving Tribe: you will have the opportunity to work in a fast-paced, open-minded and friendly environment. 
– Be part of one of our Employee Resource Groups createdaround shared identities, common backgrounds and/or special interests crafted to be a safe space and an expressive outlet. 
– Several internal events: The Monday Brief (weekly)/ The Somehands (monthly)/ The All Hands (annual).
– We’re here to SABOTAGE: It’s our mantra. It keeps us focused on what we aspire to be: a little bit sneaky, always smart, kinda frugal and constantly conspiring to create maximum impact.
Back Market is an Equal Opportunity Employer which means we pledge to not discriminate against employees based on race, color, religion, sex, national origin, age, disability or genetic information.. If reasonable accommodations are needed for the interview process, please do not hesitate to discuss this with the Talent Acquisition Team.
Back Market is helping to address one of the biggest challenges of our time: climate change. We take this so seriously that we were awarded status as a “Société à Mission”, or company with a social mission, by the French government. We know we can’t tackle a global problem without a globally representative team so we are committed to embedding diversity, equity and inclusion principles in every aspect of our organization. But more importantly, being One Loving & Free Spirited Tribe is in our DNA as it is one of the five foundational values of our company since we got started way back in 2014. We are committed to hiring and supporting diverse teams of people from all backgrounds, experiences, and perspectives. We know our lofty goals cannot be reached unless everyone has a seat at the table along with the resources and opportunity to grow.

Read more

Bordeaux is never boring

Lots of adventure.
Plenty to explore.

Bordeaux offers great food and great quality of life. It’s famous for wines and cheeses. Join us here, and you can work off a bit of lunchtime brie by biking back to the office along a moon-shaped harbor. For weekend excitement, visit the Pyrenees mountains, surfer beaches, and fairytale castles.

Your kind of culture

Group of colleagues posing in front of a photobooth camera
Large group of colleagues standing in front of a lake holding a number of single letter signs that together read 'Keep Back Market Weird'
Three male colleagues playfully posing for a picture behind a DJ set
Group of colleagues crouched around a small outdoor vegetable patch box

We’re here to SABOTAGE!

SABOTAGE! is our mantra. It keeps us focused on what we aspire to be: a little bit sneaky, always smart, kinda frugal and constantly conspiring to create maximum impact.

SABOTAGE! will save us all.

Sticking to this mindset is what will save us from boredom, save us from the pitfalls of hypergrowth, and save us from becoming a “corporation” in the evil sense of the word.

SABOTAGE! is our constant call to action.

It’s a reminder not to rest on our laurels or credit cards. It points us to where we want to go but also tells us to stay true to who we are.

Group of colleagues posing in front of a photobooth camera
Large group of colleagues standing in front of a lake holding a number of single letter signs that together read 'Keep Back Market Weird'
Three male colleagues playfully posing for a picture behind a DJ set
Group of colleagues crouched around a small outdoor vegetable patch box

We’re here to SABOTAGE!

SABOTAGE! is our mantra. It keeps us focused on what we aspire to be: a little bit sneaky, always smart, kinda frugal and constantly conspiring to create maximum impact.

SABOTAGE! will save us all.

Sticking to this mindset is what will save us from boredom, save us from the pitfalls of hypergrowth, and save us from becoming a “corporation” in the evil sense of the word.

SABOTAGE! is our constant call to action.

It’s a reminder not to rest on our laurels or credit cards. It points us to where we want to go but also tells us to stay true to who we are.

“At Back Market, you feel that the founders and the employees
are very committed, and it’s powerful to be on that boat.”

Joana Costa, Senior Backend Engineer

It’s all about neat problems

Our SABOTAGE! spirit is about ingenuity and the love of a challenge. So, you’ll find us inventing new word plays for one of our ads or live streaming the Rubik’s Cube World Cup on a lunch break.

We move faster than the rest with rewards and a feedback culture

During an impromptu football match or a yearly growth report meeting, we’re inspired by giveaways, shares, and a culture of collaboration.

United we stand. Divided we fail to get to net zero.

We’re global citizens. At our All-hands annual party you could hear French, German, or Japanese, but in the office we only speak one language—the language of climate action.

It’s all about neat problems

Our SABOTAGE! spirit is about ingenuity and the love of a challenge. So, you’ll find us inventing new word plays for one of our ads or live streaming the Rubik’s Cube World Cup on a lunch break.

We move faster than the rest with rewards and a feedback culture

During an impromptu football match or a yearly growth report meeting, we’re inspired by giveaways, shares, and a culture of collaboration.

United we stand. Divided we fail to get to net zero.

We’re global citizens. At our All-hands annual party you could hear French, German, or Japanese, but in the office we only speak one language—the language of climate action.

Career on the rise

Where will your career take you?

Victor Lambilly

Victor Lambilly

Conversion Rate Optimizer

Jun 2017 – Apr 2019 – 1yr 11mos

Head of Merchandising

Apr 2019 – Present – 3yrs 5mos

Head of Merchandising & Catalog

Feb 2021 – Present – 1yr 7mos

Laura Escarbassiere

Laura Escarbassiere

Office Manager

Aug 2020 – Mar 2021 – 8mos

Workplace Manager

Mar 2021 – Oct 2021 – 8mos

Internal Communication Manager

Oct 2021 – Present – 11mos

Riwa El Boujemi

Riwa El Boujemi

Payment & Fraud Analyst

Jun 2018 – Dec 2018 – 1yr 7mos

Marketplace Business Analyst

Jan 2019 – Sep 2019 – 9mos

Junior Financial Planning & Business Analyst

Sep 2019 – Sep 2021 – 2yrs 1mo

Senior Financial Planning Analyst – North America

Sep 2021 – Present – 1yr

Victor Lambilly
Victor Lambilly
Laura Escarbassiere
Laura Escarbassiere
Riwa El Boujemi
Riwa El Boujemi

Who’s in our team?

Amandine Durr

Chief Product Officer
Paris, France

“What would I say to someone thinking of coming to join us? Do it soon. I arrived at Back Market in late 2021 and the progress has been super quick. I’ve worked for companies like AOL and Orange, and things move so much faster here.”

LinkedIn

Amandine Durr

Chief Product Officer
Paris, France

“What would I say to someone thinking of coming to join us? Do it soon. I arrived at Back Market in late 2021 and the progress has been super quick. I’ve worked for companies like AOL and Orange, and things move so much faster here.”

LinkedIn

Amandine Durr

Chief Product Officer
Paris, France

“What would I say to someone thinking of coming to join us? Do it soon. I arrived at Back Market in late 2021 and the progress has been super quick. I’ve worked for companies like AOL and Orange, and things move so much faster here.”

LinkedIn

An ambitious tech stack we’re continuously improving

Our ambitious objectives require the most powerful tech. The stack connects the latest software, frameworks, programming languages, and data storage solutions.

docker
CLOUDFLARE
Rest API
circleci
fast api
FLASK
github
GO logo
javascript
Vuejs
PYTHONN
TS

Better tech. Better world.

01

Fired Up

Life is short… And as much as we think you’re great, we don’t want you to spend all of it at Back Market. So make the most of it. Get excited, get mad, get weird, and get 100% committed.

02

Don’t fear fear.

We have a risk-taking spirit. It’s our obligation to make bold moves. That’s the only way we have a fighting chance in the battle against New.

03

Say it straight, Hear no hate

We want Back Market to be a safe space.Put yourself out there and say what you really think, but say it kindly and constructively.

04

Humble hearts dirty hands.

You’re part of the team, not in competition with it. Cultivate a deep compassion and respect for your teammates. We’re better as a whole when we learn from each other.

05

One team, One time.

We must work together to maximize this resource and constantly ask ourselves if our time is properly allocated or if it can be more impactful elsewhere.

06

It’s not green enough.

We consistently seek to improve our social and environmental footprint, and pave the way for the whole industry to follow.

Our application process

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Step 1 –
CV Screening + Recruiter Phone Screen

Objective

  • Assess: Experience/English skills/motivation/IC level
  • Engage candidate
  • Clarify hiring process
  • Confirm eligibility:
  • Can work remotely or relocate/Visa issues/Notice period/Salary expectation
  • Telephone Interview
  • online test
  • 30 Minutes

Step 2 –
Tech Screening

Objective

  • Assess the tech basics to qualify the candidate for the round of deep interviews
  • Validate the IC level of the candidate
  • (Re)present Back Market engineering #Ambassador
  • Telephone Interview
  • online test
  • 30 Minutes

Step 3 –
Tech interview

Objective

  • Candidate’s potential to grow
  • Leadership skills
  • Team fit & overview of the big picture
  • Telephone Interview
  • online test
  • 30 Mintues

Step 4 –
Team interview

Objective

  • Candidate’s potential to grow
  • Leadership skills
  • Team fit & overview of the big picture
  • Telephone Interview
  • online test
  • 30 Mintues

Step 5 –
Team interview

Objective

  • At the final stage we are checking the values-fit based on the Sabotage guidebook
  • Telephone Interview
  • online test
  • 30 Minutes
Apply now

Better tech. Better world.

01

Fired Up

Life is short… And as much as we think you’re great, we don’t want you to spend all of it at Back Market. So make the most of it. Get excited, get mad, get weird, and get 100% committed.

02

Don’t Fear Fear

We have a risk-taking spirit. It’s our obligation to make bold moves. That’s the only way we have a fighting chance in the battle against New.

03

Say it straight, Hear no hate.

We want Back Market to be a safe space.Put yourself out there and say what you really think, but say it kindly and constructively.

04

Humble hearts, Dirty Hands.

You’re part of the team, not in competition with it. Cultivate a deep compassion and respect for your teammates. We’re better as a whole when we learn from each other.

05

One Team, One Time.

We must work together to maximize this resource and constantly ask ourselves if our time is properly allocated or if it can be more impactful elsewhere.

06

It’s not green enough!

We consistently seek to improve our social and environmental footprint, and pave the way for the whole industry to follow.

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Want to solve unsolvable problems?
Make magic happen here.

We support ingenious minds. So, you can grab our terrific tech stack and be free
to do something completely unexpected.