Senior Backend Engineer, V-Assist Platform

V-Assist is Vinted’s internal AI assistant designed to reduce operational overhead by making it easy to find information, navigate systems, and handle routine tasks. Following a successful beta with over 1,000 users, V-Assist is now evolving into a core AI platform for engineering productivity, data discoverability, and back-office self-service. We are forming a dedicated team within the Data Infrastructure domain and hiring Senior and Lead Backend Engineers to drive this and help us scale V-Assist's impact across every corner of Vinted.

Whether you are an experienced Senior Engineer looking for your next challenge or a Lead Engineer ready to shape a major internal platform, we want to hear from you. The description below focuses on Lead-level responsibilities, but we are hiring for both roles.

Think you’re up to the challenge? Read on. 

• Lead the design of V-Assist’s core agent framework
• Design and implement secure, auditable agentic workflows with impersonation controls.
• Optimize indexing pipelines to ensure the LLM always has the most relevant and up-to-date context from across the company.
• Partner with Staff Engineers and stakeholders across Engineering, Product, Design and DSA to turn high-level visions into executable technical roadmaps.
• Develop a multi-agent workspace where humans and AI work together to solve complex, cross-domain problems.
• Design self-improvement loops using feedback to continuously refine the platform’s accuracy and performance.
• Mentor IC2 and IC3 engineers, conducting high-impact code reviews and ensuring high engineering quality across the team.

• Deep proficiency in Python, Ruby or Go, with a strong grasp of distributed systems, concurrency.
• Proven track record of building and scaling complex backend systems in high-ambiguity environments.
• Pragmatic architect who balances long-term stability with the need to take "smart" technical debt to move fast.
• Familiar with GenAI and RAG, and excited about the challenge of applying these technologies safely at an enterprise scale.
• Strong communicator who can lead technical discussions and drive alignment across the team and broader organization.
• Supportive mentor who takes pride in sharing knowledge and helping other engineers grow.

• The opportunity to benefit from our share options programme
• 25 working days of holiday
• Newest MacBook models
• Free access to an office gym
• Digital mental and emotional health support and Employee Assistant Program (EAP)
• Home office support: we provide IT workstation equipment and a personal budget of up to €540 for home workplace furniture
• Private health insurance
• On-site canteen serving delicious homemade food at friendly prices
• Frequent team-building events
• A personal monthly budget for shopping on Vinted
• The opportunity to spend up to 90 days per year - 21 of which can be spent working outside of the EU - on workation
• A dog-friendly office

Individual Learning Budget

We invest in your professional growth! As part of our commitment to continuous learning, we offer an annual learning budget to support your personal and career development through courses, certifications, workshops and more.

Hybrid Work

We’ve adopted a hybrid workplace model where 2 days in office are recommended but not enforced. It’s up to you and your team to decide on the exact days you’ll spend working together in person.

Equal Opportunity

The Vinted Group is committed to building an inclusive workplace where people from all walks of life feel a sense of belonging. We welcome applications from people of all backgrounds, identities and life experiences. At Vinted, all applicants are treated fairly without regard to their race, age, religion or belief, sex, national origin, citizenship, gender identity, sexual orientation, disability, or any other protected characteristic.