Full-Stack Developer (Node.js + React)

100% Remote, working time zone GMT+4. You will work in an international team, so knowledge of English B2 or above is necessary.

Vallettasoftware - custom mobile/web software developer in the US and Europe. Our teams implement IT projects of varying complexity, including website and mobile app development, enterprise systems, and solutions based on artificial intelligence and machine learning (AI/ML).

We are looking for a strong Full-Stack Developer to boost the client's team with deep expertise in React and Node.js, solid hands-on experience in coding and system architecture, who actively uses AI agents in daily development — for designing, writing, optimizing, and testing code through well-structured prompts.

We are looking for someone who thinks systemically, knows how to build and manage context for AI tools, and can turn them into real, measurable productivity rather than treating them as simple assistants.

Key Responsibilities

• Develop and maintain applications using Node.js (NestJS / Express) and React (including Next.js).
• Actively leverage AI agents to accelerate and automate development tasks: code generation, error analysis, and module design.
• Design system architecture and build environments where AI can effectively support the team (context management, memory, prompts, action chains).
• Develop and evolve internal AI tools, integrating with LLM APIs (OpenAI, Claude, Mistral, Ollama, etc.) as needed.
• Optimize and refactor code, conduct code reviews, and implement engineering best practices.

Requirements

• Strong knowledge of Node.js, React, TypeScript, and REST / GraphQL APIs from 4 years
• Extensive hands-on coding experience: building and debugging complex UIs, APIs, and business logic
• Practical experience using AI agents (ChatGPT, Claude, Copilot, Cursor, Windsurf, Replit Agents, etc.) for development and testing
• Solid understanding of AI-first principles — how to provide context, structure prompts, leverage memory, and design action sequences
• Experience with CI/CD pipelines, Docker, and databases ( PostgreSQL / MongoDB)
• Ability to work independently and make sound technical decisions
• English — Upper-Intermediate or higher

Nice to Have

• Experience integrating AI APIs or building custom agent-based solutions (LangChain, CrewAI, LlamaIndex, etc.).
• Understanding of multi-agent system architectures and distributed context management.
• Experience setting up and running local LLMs (Ollama, LM Studio, etc.).

🌍 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.