Backend Engineer Intern, Back Market
Lifecycle, 6-Month Role
€1.4K – €1.6K per month
More information about location
3 days a week in office
Online marketplace for refurbished electronics
Be an early applicant
Online marketplace for refurbished electronics
501-1000 employees
Be an early applicant
€1.4K – €1.6K per month
More information about location
3 days a week in office
501-1000 employees
Company mission
To do more with what we already have.
Role
Who you are
- Mandatory! Currently enrolled in your last year of an Engineering School with a backend specialization/ University Master's degree and your university can provide an internship agreement
- You have knowledge of basic coding languages and ideally Python and have basic programming experience (other internships, github, personal or student projects)
- You have knowledge of databases and operating systems, Linux is a plus
- You have the ability to learn new software and technologies quickly, being curious about the coding environment you’ll evolve in
- You are detail-oriented and have the desire and ability to work in a team in an international environment
- You are fluent in English - French is a plus
- You are looking for a 6 month, full-time role (35h/week), internship from March/April 2026
- You are authorized to work in France (EU Nationality or in possession of valid student visa/work permit)
What the job involves
- We are looking for a Backend Engineer Intern to join our Lifecycle Squad
- You’ll contribute to deprecating a legacy CRM service by helping deliver a robust, well-documented, provider‑agnostic client library that feature teams can adopt and operate more directly
- Support the team in replacing our legacy CRM service by contributing to a provider‑agnostic CRM client library that is easy to adopt, reliable in production, and observable by default
- You'll participate in building a Python CRM client with a clean, typed API for core operations (user attributes, events, subscriptions, messaging triggers)
- Assist in implementing first-class observability (metrics, logs, traces), and contribute to dashboards/alerts and SLO tracking (success rate, latency)
- Contribute to reliability features such as retries (with jittered backoff), circuit breaking, safe failure handling, and distributed rate limiting aligned with upstream quotas
- Help with migration efforts by supporting the creation of adapters, feature flags, and rollout/rollback playbooks to enable a smooth transition for feature teams
- Participate in writing tests (unit, integration, end-to-end) and producing clear documentation and usage examples
- Work closely with feature teams during pilots to collect feedback and iterate on the API and developer experience, with guidance from experienced engineers
- Bonus: If you’re interested, you can contribute to a Golang (Go) variant with a matching API surface and similar observability/reliability patterns
- Starting date: March/April 2026
- Duration: 6 months
- Full-time internship (35h/week - Monday to Friday)
Application process
- Video-call Interview with the Campus Tech Recruitment Manager (30min)
- Video-call Technical fit interview : Live coding + open talk (60 min) with the tutor and another engineer from the team
- Video-call Team fit interview with 1 other member from the team (30 min)
Our take
At a time when new smartphones launch frequently but with fewer new features and when individuals want to contribute to sustainability and the circular economy, Back Market is setting out to provide customers with a viable option of purchasing refurbished electronics goods.
The vision of the company is to become the default choice when it comes to electronics purchases, irrespective of the customers' budget. In order to materialise this vision, Back Market guarantees that all the devices sold on its platform are 100% functional. The company screens sellers before allowing them to join its platform and it monitors their performance in real-time by collecting detailed customer feedback. By doing this, it hopes to restore trust in refurbished devices and to make sustainability an easy, safe, and affordable choice.
Back Market operates in 17 counties and has a client roster that includes Netflix, Disney, BBC, Sony, and Apple. The company has also raised over $1 billion in capital, which has been invested in expansion across new and current markets. And with the recommerce market only growing, Back Market has a lot of room for exciting future growth.
Freddie
Company Specialist at Welcome to the Jungle
Insights
-4% employee growth in 12 months
Company
Company HQ
Beaubourg, Paris, France
Leadership
Thibaud Hug de Larauze
(Co-Founder & CEO)Previously a Logistic Export Assistant at Devanlay Lacoste and an Account Manager at Neteven.
Amandine Durr
(CPO)Amandine joined Back Market in 2021 as CPO. Prior to this, they were a Product Director at ManoMano, a Senior Innovation product Manager at Kering, and CPO/CEO and Head of Product at We Are TV.
Clément Petit
(CFO)Previously spent nearly 3 years at Veepee, initially joining as a Financial Director before becoming CFO of France then later Group CFO. Prior to that, they spent 4 years at Elanco in Financial roles.
Dawn Baker
(CTO)Dawn joined Back Market in 2022 as Senior VP of Engineering, becoming CTO in 2023. Prior to this, they worked at Google as a Senior Director of Engineering, at Fitbit as the VP of Software Engineering, and at LinkedIn as a Senior Manager of Site Reliability Engineering.
Salary benchmarks
We don't have enough data yet to provide salary benchmarks for this role.
Submit your salary to help other candidates with crowdsourced salary estimates.
Share this job
View 16 more jobs at Back Market