rahul kumar

Full-Stack AI Developer

India 4+ yrs exp 89 · Excellent

About

Full-Stack AI Developer with 3.5+ years of software engineering experience building scalable enterprise web applications. Proven expertise bridging modern frontend architecture (Angular, TypeScript, RxJS) with advanced AI backends using Python, FastAPI, LangChain, LangGraph, and RAG pipelines. Specialized in designing high-performance RESTful APIs and production-grade LLM interfaces.

Skills & Expertise (20)

Typescript Advanced

8.0/10

Years Exp

Angular Advanced

8.0/10

Years Exp

LangChain Advanced

8.0/10

Years Exp

RESTful APIs Advanced

8.0/10

Years Exp

Python Advanced

8.0/10

Years Exp

FastAPI Advanced

8.0/10

Years Exp

Microservices Advanced

7.5/10

Years Exp

LangGraph Advanced

7.5/10

Years Exp

Asynchronous programming Advanced

7.5/10

Years Exp

GitHub Advanced

7.0/10

Years Exp

Git Advanced

7.0/10

Years Exp

Postgresql Advanced

7.0/10

Years Exp

Vercel Intermediate

6.5/10

Years Exp

Vector Search Embeddings bootstrap CSS3 HTML5 RxJS Javascript (ES6+

Work Experience

AI Developer & Researcher

Independent AI Developer & Researcher

Jul 2025 - Present

Architected end-to-end RAG pipelines and multiagent workflows using Python, FastAPI, and LangChain, improving document retrieval accuracy by 35%. Designed asynchronous FastAPI backends with vector search integration, enabling sub-200ms query latency across 10,000+ indexed document vectors. Built interactive Angular dashboards to stream tokens real-time and visualize LLM responses, boosting response processing speed by 40%.

Software Engineer

Platform Commons Services Pvt. Ltd.

May 2024 - Jul 2025

Developed scalable web applications in Angular 16+ and TypeScript, delivering features across 5+ enterprise modules serving 50k+ active users. Optimized reactive forms, custom RxJS operators, and payload caching, improving initial page load speed by 35% and cutting bundle size by 25%. Built responsive, accessible UI layouts using Bootstrap and CSS3, achieving 100% cross-browser compatibility.

Software Engineer

Volmint Technologies

Dec 2021 - Feb 2024

Engineered enterprise Angular applications and established a reusable UI component library, reducing development cycle times by 20%. Collaborated with cross-functional teams to integrate 15+ RESTful API endpoints, ensuring seamless data flow and zero-downtime deployments.