Rajiv R.
Backend Developer | Python, FastAPI, Next.js, React & AI Integration
I build web applications, internal business tools, and AI-powered features using Next.js, React, Python, and FastAPI. Whether you need a customer dashboard, an internal management system, a custom web application, or an AI feature integrated into an existing product, I can help take it from requirements to a working implementation. 📋 What I can help you build: - Full-stack web applications and dashboards - Internal tools, inventory systems, and customer management systems - REST APIs, backend services, and database integrations - AI-powered features, assistants, and document-processing workflows - Business automation and integrations between existing tools - Improvements, bug fixes, testing, and deployment for existing applications Some of my relevant work: 📖Kantigo — AI Learning Management System I developed and deployed a learning platform that generates structured courses and lessons based on users' learning goals. It combines a Next.js frontend, database, authentication, and AI content-generation workflows. 💼 Business Websites and Internal Systems I'm working on a company website redesign and developing inventory and customer management systems alongside a UX colleague. 💻 AI Development and Integrations At a biotech R&D startup, I developed AI agents, external API integrations, and evaluation systems. I also built a centralized benchmarking platform used to assess agent quality and readiness for production. My main tools include Next.js, React, TypeScript, Python, FastAPI, PostgreSQL, Supabase, Docker, MCP, and modern AI APIs. I prefer starting with a clear scope, agreeing on useful deliverables, and building something that can be tested and maintained rather than just demonstrated. If you have an existing application that needs improvement or a new tool you want to develop, I'm happy to discuss a small first milestone.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $688
Billed in all: $2,050$2k
$229 in the last 6 months
Across 9 contracts
Earnings, last 30 days
Read once a week before Nov 5, 2026, daily since. Dotted: longer than usual between two readings. Hatched: over two weeks without one.
Skill rankings: Top 30% in Python
Ranked by MRR among everyone on Upwork with the skill.
- llm cost optimization8 freelancers · 🇵🇭 #1Top 38%🇵🇭#1 of 1
- #5llm orchestration10 freelancers · 🇵🇭 #1Top 50%🇵🇭#1 of 1
- #48MCP servers99 freelancers · 🇵🇭 #2Top 48%🇵🇭#2 of 3
- #55Business Applications Development131 freelancers · 🇵🇭 #3Top 42%🇵🇭#3 of 3
- #103rag implementation237 freelancers · 🇵🇭 #1Top 43%🇵🇭#1 of 1
- #121LLM Agent Development242 freelancers · 🇵🇭 #1Top 50%🇵🇭#1 of 1
- #148LLM API Integration359 freelancers · 🇵🇭 #3Top 41%🇵🇭#3 of 6
- #442AI Agents877 freelancers · 🇵🇭 #9Top 50%🇵🇭#9 of 17