Senior Full Stack Engineer - Data Services

About the role

Wix is hiring a Senior Full Stack Engineer for its Data Services squad, part of the Big Data and Analytics Platform group, based in Vilnius. The team builds the "Org Brain", a company-wide context layer and data catalog that engineers and AI agents use to understand what is true across Wix. You will take end-to-end ownership of the platforms powering the context store and data catalogs, from data ingestion to agentic search and serving.

Key responsibilities

• Deliver innovative agentic and deterministic solutions for internal, data- and AI-driven use cases.
• Build full-stack data-oriented systems and pipelines, coding in Python, Scala, Java and TypeScript.
• Work 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 used by engineers and AI agents to query them.

Required profile

• Full Stack Engineer with at least 5 years of experience.
• Ability to design, build and own end-to-end production-grade services and web applications with modern web frameworks (React, Angular, Vue, Next, etc.).
• Experience integrating AI/LLM capabilities into production systems, such as agentic workflows, tool-calling or MCP-based integrations.
• Experience collaborating with product managers, UX specialists and stakeholders.
• Strong English communication skills.

Required skills

• Python, Scala, Java and TypeScript
• Modern web frameworks (React, Angular, Vue, Next)
• AI/LLM integration, agentic workflows, tool-calling, MCP-based integrations
• An advantage: big data and data-oriented products, advanced RAG/agentic search, and building MCP servers as a product

What we offer

• Salary of 5,000 - 8,000 EUR gross per month, including an RSUs package.
• Discount stock purchasing plans (ESPP).
• Health and personal accident insurance.
• Daily lunch and snacks at the office, commuting allowance, discounted phone services and a new phone.
• Exercise classes, wellness activities, online courses and professional development.
• Fun activities and team events.