Experienced Software Engineer - Seller Care

Back Market; Barcelona; Hybrid; EUR 60,000 - 90,000; Full time

Benefits offered by this job

Hybrid work policy

2 remote days per week

Mentorship programs

Job summary

Back Market in Barcelona is seeking an Experienced Software Engineer to join the team behind seller after-sales care. You will build and evolve the claims, repair or replacement, refunds, and seller communications systems end-to-end.

As part of an international squad, you will own core services, work across frontend and backend stacks, and contribute to scalable, high-quality software in a collaborative, fast-paced environment with ownership and learning.

Qualifications

• 3+ years backend development experience.
• Strong system design skills.
• Experience with microservices, distributed systems.
• Understanding of data architecture and APIs.
• Experience with performance optimization and scalability.

Responsibilities

• Owns seller after-sales systems end-to-end.
• Build and evolve post-sale care products.
• Collaborate with squad and staff engineer.
• Deliver scalable, high-quality code.
• Participate in bi-monthly group rituals to align technical direction.

Skills

Backend development

System design

Microservices

APIs

Performance optimization

Distributed systems

Frontend frameworks

Code quality

Collaboration

Ambiguity navigation

Tools

Vue.js

TypeScript

Nuxt

Storybook

Tailwind

Python

FastAPI

Go

PostgreSQL

Redis

Kafka

RabbitMQ

BigQuery

Kubernetes

Docker

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

You will be joining the team that owns the systems behind seller after-sales care, including claims, repair or replacement, refunds, seller communications, and the Seller API.
As an Experienced Software Engineer , you will build and evolve these products end to end, helping automate resolution flows and move seller actions to provide the best resolution experience for our customers.

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: Vue.js, TypeScript, Nuxt, Storybook, Tailwind

Backend: Python, FastAPI, Go

Data and messaging: PostgreSQL, Redis, Kafka, RabbitMQ, BigQuery

Infrastructure: GCP, Kubernetes, Docker, ArgoCD, CircleCI, GitHub, BackStage, Grafana, Open Telemetry

As an Experienced Engineer: Produce & Optimize

• Works autonomously on development tasks within the team's application or service.




• Delivers high-quality code on time.




• Demonstrates professional collaboration with teammates and peers.




• Operates autonomously within the squad's technical scope.




• Backend focus Experienced :

• 3+ years backend development experience


• Strong system design skills


• Experience with microservices, distributed systems


• Understanding of data architecture and APIs


• Experience with performance optimization and scalability

Frontend capabilities :

• Experience or knowledge with modern JavaScript frameworks


• Understanding of state management, routing, API integration


• Considers performance, accessibility, and UX in implementations

Fullstack mindset

• End-to-end product thinking


• Curiosity about the full 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)


• Data module (45 min)


• Tech leadership + Meet your manager ( 75 min)


• BM Values (45 min)

Hybrid policy - Barcelona 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.