Senior Software Engineer - Code Foundations

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 front