Senior Software Engineer - Code Foundation

backmarket; Barcelona; Híbrido; EUR 70.000 - 110.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Hybrid work policy

Mentorship programs

Diversity training

Descripción de la vacante

Back Market is seeking a Senior I Engineer to join the Code Foundation team, working across the tech stack to modernize a distributed platform and deliver high-quality software.

You will collaborate with squads, own parts of the system, and contribute to design decisions, testing, and documentation while maintaining a strong focus on performance and reliability.

Hybrid work with 3 days in the office and 2 remote days each week supports balance while driving impact globally.

Formación

• 5+ years of experience as a Software Engineer.
• Strong knowledge of JavaScript/TypeScript and modern frontend frameworks.
• Experience with backend tech (Python/Go) is a plus.
• Experience configuring CI/CD pipelines (CircleCI).
• Ability to deliver tests, documentation and well-described PRs.

Responsabilidades

• Collaborate with squad and Staff engineer to shape technical direction.
• Contribute to architecture improvements for quarter-bounded projects.
• Explore new technologies with potential impact for the team.
• Participate in chaos mitigation and reliability improvements.
• Deliver high quality code with tests and documentation.

Conocimientos

Frontend development

JavaScript/TypeScript

Code reviews

Collaboration

Ownership

Herramientas

CircleCI

Kubernetes

Docker

REST APIs

Python

VueJs

Nuxt

Algolia

Datadog

Descripción del empleo

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

The Code Foundation team is dedicated to providing foundational tools, libraries, and standards that enhance developer productivity and ensure consistency across application development. By fostering a culture of experimentation and enabling robust observability, the team empowers developers to deliver high-quality products efficiently and effectively.

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

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

Backend stack: Python - FastAPI , SQLAlchemy, Celery, Golang, Django (being phased out)

Data: PostgreSQL, Redis, Kafka, RabbitMQ, BigQuery

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

Main technical challengesTraditionally 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 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 advocate for prioritization of tasks that can optimize delivery
  Frontend focus (senior):

  • At least 5 years of experience as a Software Engineer

  • Has strong technical abilities in Javascript and Typescript. Bonus if worked with e.g. Python and Go as well or any backend language

  • Has worked with configurating CI/CD pipelines like CircleCI or equivalent

  • Delivers high quality code including tests, documentation and in-depth PR descriptions

  • Can receive and provide in-depth constructive code reviews

  • Interest in our tech stack : GCS, Kubernetes, Docker, REST APIs, Python, VueJs, Nuxt, Algolia, Datadog.

Software engineering mindset

• End-to-end product thinking

• Curiosity about multi stack

• Strong collaboration and communication skills

• Ability to navigate ambiguity across technical domains

Recruitment process

• HR screening - (45 min)

• Coding & Testing module - Backend (60 min)

• System design feature (60 min)

• Tech leadership + Meet your manager ( 75 min)

• BM Values (45 min)

Hybrid policy -

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.