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

Nice to have

• 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

• 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