Senior Full Stack Developer (Vinci AI)

Senior Full Stack Developer (Vinci AI)

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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. Most AI support tools reply to tickets. 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.

What You'll Do:

• 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

What We're Looking For:

• 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

What 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

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