Senior Full Stack Developer (Vinci AI)

About the Position

Vinci AI is building AI agents for customer support that act, not just answer.

We're launching from inside a hundred-million-dollar scale-up with a clear ambition: build the next unicorn in customer support. Vinci acts - resolves them, escalates with full context when needed, learns from every interaction, and turns support from a queue into an automated operating layer.

We're looking for a Senior Full-Stack Engineer who wants ownership from day one and the chance to shape a category-defining product from the ground up.

Responsibilities

• Own meaningful parts of our full-stack architecture - from idea to shipped product
• Make sharp technical and product decisions, working closely with the founders
• Build and improve our AI/LLM integrations at the product layer
• Move fast, iterate often, and take real responsibility for what you ship

Requirements

• Senior full-stack experience with strong ownership mentality
• Strong TypeScript experience across the stack: React/Next.js, Node.js/Fastify, PostgreSQL, Redis, and background job systems such as BullMQ
• Strong product mindset - you care about outcomes, not just code
• Genuine passion for AI and building products people actually use

Nice to Have

• Experience with Drizzle ORM, pgvector, or vector/RAG-based systems
• Experience building auth, permissions, and multi-tenant SaaS systems
• Experience with support, helpdesk, CRM, or ticketing integrations such as Zendesk, Intercom, Freshdesk, Salesforce, or HubSpot
• Experience shipping LLM-powered product features: tool calling, evaluations, observability, prompt/version management, or AI agent workflows

We Offer

• Competitive salary based on experience and results, plus meaningful stock options for exceptional candidates
• 24 paid vacation days + paid sick leave
• Fully remote work with flexible hours
• A culture of real ownership - your ideas get heard, your impact gets seen
• The opportunity to build something meaningful at an early-stage company with big ambitions

About the Company

Ready to build something category-defining? Join Vinci AI 🚀

Location: Milan, ITA