Senior Backend Engineer II, Engineering Experience

We're hiring a Senior Backend Engineer II to join the Engineering Experience domain in Vinted's Platform unit. Our domain builds the tools, platforms and golden paths that the rest of Vinted Engineering relies on every day - from the first line of code an engineer writes to the moment it runs safely in production.

Engineering Experience is made up of several teams, each owning a part of the engineering workflow:

• CI/CD owns the flow from commit to production: code repository hosting and continuous integration, build artifacts and secrets, and deployment through ArgoCD - built and run in-house as self-service products for every engineering team.
• Development Environments & AI is responsible for development environments and the engineering AI tooling ecosystem. Its flagship is Spinup, a cloud development environment that lets engineers and coding agents validate changes in remote environments without the complexity of managing local services. The team also leads the adoption of AI-assisted engineering across the company.
• DevPortal builds Vinted's internal developer portal - the service catalog and self-service workflows that give every team clear ownership and one place to provision and operate their services.
• Quality Engineering delivers tooling and processes for effective quality assurance across Vinted, from test infrastructure to reporting and quality metrics.

You'll join one of these teams - Development Environments & AI or CI/CD. You'll report to your team's Engineering Manager and collaborate closely with the other Engineering Experience teams. As a member of this domain, you will suggest, design and implement solutions for fast and reliable development, integration, delivery and quality, and ensure their successful adoption across the organisation.

• Explore, adopt and enable AI-assisted approaches for your own delivery and to improve the efficiency and quality of others across Vinted's software development life cycle
• Design, build and own tools, services and frameworks that make development, delivery and quality fast and reliable, using technologies such as Go, Ruby and Kubernetes
• See your output used by hundreds of other engineers across Vinted
• Make Vinted's codebase work well with coding agents - the context, conventions and scaffolding that raise the quality of AI-generated code
• Build tooling and introduce processes to handle complex problems, such as growing pull request review load, AI assisted PR-merge pipelines, etc.
• Improve environments and pipelines so agents and engineers can validate changes in seconds instead of managing services on their own machines
• Own your solutions end-to-end, from idea and research to wide adoption

• You have substantial experience designing, building, and operating backend systems, platforms, or developer tools used at scale
• You heavily use AI to boost your work, and you're keen to help other engineers do the same
• You have proven experience designing and shipping tools, platforms or services that other engineers depend on
• You write clean, maintainable and testable code
• You know how to make a codebase work well with AI - the context, conventions, guardrails and evaluation that raise the quality and safety of AI-generated code
• You understand the practical limits and risks of LLM-based tools and design around them
• You exhibit strong thought leadership in your area and have opinions about how things should be done, you can influence technical direction, mentor others and drive adoption of best practices across teams
• You are passionate about engineering experience and developer productivity
• Excellent written and spoken English

Nice to have

• It's a plus if you have hands-on experience with Go, Kubernetes, or building developer tooling and CI/CD systems
• It's a plus if you have experience working in platform-like teams

• The opportunity to benefit from our share options programme
• 25 working days of holiday
• Access to all the tools & tech needed for work
• Home office support: we provide IT workstation equipment and a personal budget of up to 540 for home workplace furniture
• Private health insurance
• Confidential Employee Assistance Program (EAP) for you and your family
• Frequent team-building events
• A personal monthly budget for shopping on Vinted
• A dog-friendly office
• In Vilnius office: gym & in-house meals at friendly prices
• In Kaunas office: a monthly lunch allowance, and a once-a-week provided in-house lunch and breakfast