Senior Full Stack Engineer - Data Services

Every AI-powered data analysis or coding at Wix depends on one thing: trustworthy, always-current data. You'll help build the agentic “Org Brain” that makes that possible - a company-wide context layer and data catalog that both engineers and AI agents rely on to understand what's true across Wix. You'll join Data Services, a domain squad within Wix's Big Data and Analytics Platform group, based in Vilnius, focused on solving these problems and more at scale.

In this role, you'll take end-to-end ownership of the platforms that power our context store and data catalogs, from data ingestion to agentic search and serving. You'll work hands-on across the full stack, partnering with cross-functional teams to keep pace with fast-evolving AI needs.

In your day-to-day, you will

• Deliver innovative agentic and deterministic solutions for internal, data- and AI-driven use cases
• Be hands-on across the stack, coding in Python, Scala, Java & Typescript to develop full stack data-oriented systems and pipelines
• Work closely with other squads and teams across Data Infrastructure to align on architecture, data contracts, and shared tooling
• Own the context store and data catalog end-to-end, from data modeling through the interfaces engineers and AI agents use to query them
• Exceptional and highly motivated Full Stack Engineer with at least 5 years of experience
• Expertise in designing, building, and owning end-to-end production-grade services as well as web applications using modern web frameworks (React, Angular, Vue, Next, etc.)
• Hands-on experience integrating AI/LLM capabilities into production systems, including agentic workflows, tool-calling, or MCP-based integrations
• Experience collaborating with product managers, UX specialists, and stakeholders
• Strong communication skills in English

It's an advantage if you

• Have experience working with big data and/or data-oriented products
• Have experience with building advanced RAG/Agentic search and/or building MCP servers as a product

Data Services is a squad within Data Intelligence, made up of data oriented xEngineers. We're behind the context store, data catalog, and data quality infrastructure that serve most of Wix's roles, mainly xEngineers and creators, along with their AI agents.

We own the full stack

Frontend, backend and data, while continuously deepening our AI fluency as a team. We value ownership, accountability, curiosity, and a willingness to dive into problems outside your comfort zone.

We offer

• Discount stock purchasing plans (ESPP)
• Health and personal accident insurance
• Daily lunch and snacks at the office
• Commuting allowance
• Discounted phone operator services and compensation for a new phone
• Free exercise classes and wellness activities
• Online courses and professional development
• Fun activities and team events

Salary range is 5000 - 8000 Eur GROSS / month (Total compensation, including RSUs package)