Senior Software Engineer - Code Foundations

Back Market; Barcelona; Híbrido; EUR 60.000 - 90.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Hybrid work

Remote week quarterly

Diversity programs

Descripción de la vacante

Back Market is seeking a versatile Software Engineer with strong frontend fundamentals and curiosity. You will work on frontend architecture, CI improvements, performance, and platform tooling, owning parts of the stack from edge to data layers.

You'll collaborate with product engineers, platform teams, and technical leaders across Back Market, writing maintainable code with tests and documentation while continuously improving the developer experience.

Formación

• Proficient in JavaScript and TypeScript with strong frontend fundamentals.
• Experience with Vue.js and Nuxt in a production setting.
• Understanding of caching, performance trade-offs, and observable systems.
• Experience with CI/CD, testing, and deployment pipelines.
• Willingness to learn broader stack including backend services and infra.

Responsabilidades

• Build and improve frontend platform capabilities and guidelines.
• Increase reliability and self-service in frontend delivery.
• Enhance developer experience across local development, tests, CI/CD, and deployments.
• Tackle complex frontend topics such as caching, performance, configuration, and architecture.
• Define sensible standards and collaborate with engineers and leaders.
• Write maintainable code with tests and documentation.
• Participate in code reviews, incident response, and post-mortems.
• Share learnings to simplify platform usage for engineers.

Conocimientos

JavaScript

TypeScript

Frontend fundamentals

Vue.js

Nuxt

Caching & performance

CI/CD

Observability

Backend awareness

Ownership

Communication

English proficiency

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 role

We're looking for a versatile Software Engineer with strong frontend fundamentals and a healthy curiosity for everything around them.

You might work on frontend architecture one day, improve CI or local development the next, and then dive into performance, observability, deployment, or platform tooling. You enjoy understanding how things work beyond the browser, and you're comfortable reasoning across the edge, CDN, server, application, and data layers.

This is a build-it-and-run-it environment. We own what we build, operate it in production, and improve it when reality inevitably gives us feedback.

What you'll do

• Build and improve platform capabilities and Golden Paths for frontend engineers.
• Make frontend delivery more consistent, reliable, and self-service.
• Improve the developer experience across local development, testing, CI/CD, releases, and deployments.
• Work on complex frontend platform topics such as caching, performance, configuration, observability, and application architecture.
• Help define sensible standards without creating unnecessary ceremony.
• Collaborate with - Build and improve platform capabilities and Golden Paths for frontend engineers.
• Make frontend delivery more consistent, reliable, and self-service.
• Improve the developer experience across local development, testing, CI/CD, releases, and deployments.
• Work on complex frontend platform topics such as caching, performance, configuration, observability, and application architecture.
• Help define sensible standards without creating unnecessary ceremony.
• Collaborate with product engineers, platform teams, and technical leaders across Back Market.product engineers, platform teams, and technical leaders across Back Market.
• Write maintainable code with appropriate tests and documentation.
• Participate in technical discussions, code reviews, incident response, and the occasional "how did this end up in production?" investigation.
• Share what you learn and help make the platform easier for everyone to use.

What we’re looking for

• Strong professional experience with JavaScript and TypeScript.
• Solid frontend fundamentals, including browser behaviour, HTTP, SSR, APIs, performance, and application architecture.
• Experience with Vue.js and Nuxt, or a comparable frontend ecosystem.
• A good understanding of caching and performance trade-offs. You can reason about cache keys, invalidation, freshness, consistency, and privacy.
• Experience with CI/CD, automated testing, and production software delivery.
• Interest in the broader stack, including backend services, infrastructure, observability, and developer tooling.
• Strong ownership and a pragmatic approach to solving problems.
• The ability to navigate ambiguity, explain complex topics clearly, and work well with others.
• Good written and spoken English.

You don't need to know every tool in our stack. We certainly don't expect you to. What matters is that you can learn quickly, ask good questions, and make complex things simpler for the engineers using your work.

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

Recruitment process

• HR screening, 45 minutes
• Coding and testing module, 60 minutes
• System design discussion, 60 minutes
• Tech leadership and manager interview, 75 minutes
• Back Market values interview, 45 minutes

Hybrid work

We work in a hybrid setup, with three days per week in the office. Monday is mandatory. Additionally there is one remote week per quarter.

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.