Node+React Full-Stack Developer (Lovable, Supabase, LLM Integration)

We are looking for a Node+React developer with experience working with Lovable, Supabase, and LLM workflows for a platform development project.

The first POC version of the platform is complete. Phase 2 focuses on extending its functionality, deepening LLM integration, improving data architecture in Supabase, and preparing the product for internal demo and early client access.
We’re looking for a developer experienced with Lovable, Supabase, and LLM workflows to deliver this production-ready iteration.

Core Responsibilities

• Expand and refine the existing Lovable-based prototype, including new modules and user flows.

• Optimize Supabase structure (auth, schema refactoring, policies, triggers, functions).

• Implement advanced LLM orchestration — context persistence, memory, and multi-step reasoning.

• Integrate prompt templates and AI responses into the current UI and data flow.

• Add logging, validation, and error-handling layers for stability and traceability.

• Collaborate with PM and AI architect on backend logic and feature prioritization.

• Prepare technical documentation and participate in internal review demos.

Requirements

• Proficiency in TypeScript / JavaScript.

• Hands-on experience with Supabase (auth, Postgres, edge functions, storage).

• Familiarity with Lovable.dev or similar React-based low-code frameworks.

• Proven experience integrating LLM APIs (OpenAI, Claude, Bedrock, etc.).

• Understanding of prompt design, embeddings, and vector search pipelines.

• Comfortable working in iterative, fast-moving startup environments.

• English: B2-С1

  Nice-to-Have

• Experience with LangChain, pgvector, or Supabase edge deployments.

• Familiarity with conversational AI UX and multi-agent workflows.

• Knowledge of Tailwind customization and Lovable theming.

Joining Valletta Software Development means:

🌍 A Global, Thriving Team
Join 100+ specialists from 20+ countries, united by a passion for outstanding
IT solutions.
🚀Diverse projects: Fintech, MedTech, AI/ML, e-commerce, and more. Switch
teams or industries to broaden your skills.
💡 Support at Every Step Client interview prep: We train you to succeed + give actionable feedback.
✔️ Strategic stability: Well-structured processes, strong management, and long- term vision.
✔️ Core values: Honesty, flexibility, innovation, and a people-first approach.
💸 Regular salary review based on your personal results
✨ Paid rest days and sick leaves.