Lead Engineer - Node.js/React.js

Key Responsibilities :

• Design, develop, debug and deliver scalable full-stack features across database, backend APIs and frontend applications.
• Work extensively with TypeScript, Node.js/Fastify, PostgreSQL/Prisma and React/Vite.
• Enhance the AI build engine involving agent orchestration, prompt engineering, tool/function calling and Anthropic SDK integration.
• Work on AI-generated application workflows and troubleshoot complex AI-generation or build-pipeline issues.
• Develop secure and maintainable solutions including RBAC, authentication, secret handling and audit logging.
• Implement requirements with proper traceability between specifications, development and automated testing.
• Build and maintain automated testing using Vitest/Jest and Playwright/Cypress.
• Participate in architecture decisions, API design, integrations and performance optimization.
• Conduct code reviews and help maintain coding standards and engineering quality.
• Use AI development tools such as Claude Code, Cursor and GitHub Copilot to improve engineering productivity.
• Provide technical guidance and mentoring to junior and mid-level engineers when required.
• Support technical discussions, client interviews and solutioning activities when needed.

Required Skills :

• Strong hands-on experience in TypeScript, Node.js and React full-stack development.
• Strong experience with backend frameworks such as Fastify, Express or NestJS.
• Good understanding of REST APIs, authentication, RBAC and application architecture.
• Strong database experience with PostgreSQL, MySQL, MongoDB or other NoSQL databases.
• Experience with ORM frameworks; Prisma is preferred.
• Working knowledge of LLM/AI application development, including prompt design, function/tool calling and agentic workflows.
• Exposure to model-provider SDKs such as Anthropic or OpenAI.
• Strong debugging, root-cause analysis and performance-tuning capabilities.
• Experience with automated testing and end-to-end quality assurance.
• Understanding of SDLC, Agile, Git/GitLab and CI/CD practices.
• Ability to quickly understand and work within a large, specification-driven codebase.
• Strong communication, ownership and problem-solving skills.

Good to Have :

• AWS, Docker and GitLab CI/CD exposure.
• Experience with multi-agent or agentic AI frameworks.
• Experience with LLM evaluation or AI code-generation products.
• Exposure to React Native or mobile build pipelines.
• Experience with multi-tenant SaaS applications.
• Knowledge of observability, rate limiting, permission models and credential management.
• Experience with analytics, automation or system integrations.