Rajan A.

I’m a Senior AI & Full-Stack Developer with 17+ years of software development experience, building production web applications, APIs, integrations, automation systems, and AI-enabled business solutions.

My core stack includes Python, FastAPI, Django, React, Angular, Node.js, Express, PHP/Laravel, PostgreSQL, MySQL, MongoDB, AWS, Docker, and REST/GraphQL APIs.

Alongside traditional full-stack development, I work on AI/LLM-powered applications, AI assistants, retrieval-based systems, prompt workflows, structured AI outputs, AI-enabled analytics, data pipelines, and API-driven AI integrations.

I can help businesses add AI capabilities to existing products without unnecessarily rebuilding their current systems.

AI & Automation Experience

• LLM-powered applications and AI assistants
• Python / FastAPI AI backend services
• Prompt engineering and structured outputs
• Retrieval and document-based AI workflows
• AI-powered business analytics and reporting
• AI integrations with existing SaaS and enterprise applications
• Data ingestion and preprocessing pipelines
• SQL-backed AI applications
• Role-based and permission-aware AI workflows
• AI evaluation, testing, and output validation
• API integrations with AI services
• Workflow automation and intelligent process improvement

Full-Stack Engineering

• React, Angular, JavaScript & TypeScript
• Node.js / Express
• Python / Django / FastAPI
• PHP / Laravel
• PostgreSQL, MySQL, MongoDB & Redis
• REST APIs & GraphQL
• AWS, Docker & Linux
• Authentication & role-based access
• Twilio, payments and third-party integrations
• Existing application modernization and production troubleshooting