Senior Backend Engineer – Payment & Finance

Senior Backend Engineer – Payment & Finance

Job ID: 18339132
Date: May 5, 2023
Job function:
Location: Paris, FR

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Back Market is the world’s leading refurbished electronics marketplace with a team of 650 people, powering operations in 21 countries (and counting!).
Named one of the World’s Most Innovative Companies by Fast Company in 2019 and again in 2021, our mission is simple: empowering people to consume 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. We have indeed contributed to avoid the production of more than 1,000,000 tons of CO2e worldwide since our launch in 2014.
Be part of an exciting and growing international adventure that will change the way the world consumes tech.
Our engineering department, the Bureau of Technology
Representing a third of our overall team, the Bureau of Technology is structured around some concepts introduced by the foundational “Spotify model”: Squads, Tribes, and Chapters.
Spread across 5 tribes, the ~20 Product squads are the cross-functional, autonomous teams building and operating services to deliver value to customers and suppliers. They are grouped in tribes addressing a common theme. These Product squads are supported by the ~10 Platform squads which address the cross-cutting challenges, as well as the CyberSecurity team. 
As a Senior Backend Engineer, you will work closely with all members of your squad, and the Staff engineer of your tribe. Bi-monthly rituals with your tribe 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 VP of Engineering : https://urlz.fr/kyX6
Some articles written by member of the BoT : https://urlz.fr/kyX8
Main technical challenges
While Back Market has historically been powered by a monolithic application, it is currently being re-shaped into a distributed information system: building a set of efficient and loosely coupled services is one of the main challenges to face for the years to come.
This will allow each squad to: define their own ways of working ; release at their own pace ; manage their stored data by themselves ; have more latitude when picking a tech or tool.
As a Senior Backend Engineer the challenge is three-fold:
– making this transition seamlessly with zero downtime and no revenue loss
– ensuring scalability of the codebase in the context of new country openings in terms of complexity and adaptability of features
– guaranteeing high performance of production environments
Our technical environment
We use a lot of different technologies. Here is a list of the most commonly used by the Backend Engineers: 
Application (Python): Django/FastAPI/Flask/Celery/SQLAlchemy
Datastore: PostgreSQL/MySQL/Redis
Infrastructure: AWS / GCP / Kubernetes / Docker / Datadog/ ArgoCD / CircleCI
What you will do in this role
We are looking for a Senior Backend Engineer to help us build & operate a set of efficient, high cohesion, low coupling services with {security,privacy}-by-{default,design} 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/SP/JP).
About the team
The Money Journey Tribe’s mission is to build scalable and trustable payment services that are business enablers for Back Market.
They are in charge of all the features related to payment and financial services:
– Create a resilient and flexible payment system for Back Market customers and merchants
– Identify, track and validate every transaction to reconcile and explicit Back Market money flows
– Manage the invoicing system: from the integration of every single Back Market service to the generation of user and merchant invoices
– Provide tools and automate flows to reduce time-consuming tasks from our Financial and Accounting teams

Key responsibilities for this position as a Senior Engineer I : Produce, Innovate & Share

  • Owning and being accountable for large team project features, including ones with external dependencies
  • Serving as a role model for professional collaboration inside and outside the team
  • Demonstrating a broad understanding of our global architecture and how your domain fits within it
  • Consistently delivering code that sets the standard for quality and maintainability
  • Contributes to the Chapter on a regular basis, share innovation and run Chapter initiatives
WHY SHOULD YOU 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.”

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.”

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.”

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
fast api
FLASK
GO logo
javascript
PYTHONN
TS

Better tech. Better world.

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

Better tech. Better world.

01

Think deep. Decide fast.

We think hard without overthinking. Prepare to be quick on your feet and able to adapt to constantly evolving situations.

02

This is Sparta.

Every Spartan raises their shield knowing that everyone else is relying on them to do their job well (if you don’t know what we’re talking about, 300 is on Netflix). Everyone’s work matters at Back Market.

03

Minimum resources, maximum impact.

As you can probably tell, we aren’t big about waste. That’s why we will always prize the simple and nimble solution above a spendy one. Expect to get creative and to do more with less.

04

One loving and free-spirited tribe.

We want to be a place where people can be themselves — unless that self is an a$$hole. Each person here can count on fair rules, fair pay, and fair say.

05

It’s not green enough.

This is self-explanatory. Just because our mission is a commitment to the environment doesn’t give us a free pass — there’s room for improvement. We know it and we’re reaching towards it one step at a time.

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