Senior Full Stack Developer

• We’re seeking a super-experienced Senior Fullstack Developer with deep expertise in JavaScript/TypeScript, particularly in Node.js, React, and Supabase, combined with practical experience in AI prompt engineering. You’ll architect, build, and optimize scalable applications that seamlessly integrate AI-assisted functionalities and modern cloud backends.

Requirements

Position name: Senior FS Developer (with AI agents experience)
Level: Senior

Hard skills:

• 8+ years of experience building fullstack web applications.
• Advanced proficiency in JavaScript/TypeScript, Node.js, React, and Supabase.
• Practical hands-on experience with AI prompt engineering, leveraging ArgumentCode, Cursor, or equivalent developer-AI tools.
• Experience with Spec-Driven Development approach: BMAD / SpecKit frameworks
• Experience with Figma MCP integrations to pull designs directly from Figma files
• Deep understanding of RESTful and GraphQL APIs, modern web performance, and security.
• Advanced experience with SQL databases, especially PostgreSQL
• Solid understanding of LLM context design, tool integration, and code-generation workflows.
• Experience with Docker, GitHub Actions, and cloud deployments (Vercel, AWS, or similar).

Nice-to-Have:

• Familiarity with Next.js, tRPC, or Edge functions.
• Exposure to RAG systems, vector databases, or LangChain/OpenDevin-style orchestration.

Responsibilities:

• Design and develop full-stack applications using Node.js (backend), React (frontend), and Supabase (database/auth/storage).
• Build scalable APIs and event-driven systems.
• Integrate and optimize AI/LLM workflows (e.g., OpenAI, Anthropic, or local models) through prompt design, argument-code, or Cursor-based pipelines.
• Collaborate closely with product and design teams to turn ideas into high-quality software.
• Write clean, maintainable, and testable code following best practices (CI/CD, unit/integration tests, performance monitoring).
• Review code, mentor team members, and participate in architecture discussions.

English - Upper, the customer is from USA 
Time zone: the client availabile in USA timezone -6 CET