Looking for a job

Girish Challa User

@girishchallauser

Freelance Full-Stack Python Developer building FastAPI e-commerce microservices with event-driven payments and inventory workflows.

India

Message

What I'm looking for

I’m available for remote freelance, contract, part-time, and full-time roles.

As a Freelance Software Developer, I deliver project-based software work from requirements through development, testing, deployment, and client handover. I communicate directly with clients in English throughout the process.

For GlobalScart 360, I built a SaaS-style e-commerce platform with FastAPI and PostgreSQL microservices. I implemented event-driven workflows for orders, inventory, payments, and related operations, including inventory locking and idempotent payment webhooks.

On TaskHub, I built a React web front end and a React Native mobile companion using JWT-secured GraphQL APIs, Redis caching, and Elasticsearch search. I also built a university timetabling solver using CP-SAT and Large Neighborhood Search, with REST APIs and a dashboard.

I’ve integrated OpenAI and Anthropic APIs into project features and prototyped RAG and Agentic AI workflows using Qdrant and Ollama. I use AI-assisted development tools with manual review and validation, and have deployed projects using Docker, Kubernetes, and AWS EC2.

Experience

Work history, roles, and key accomplishments

Current

Freelance Software Developer

Current

Independent / Project-Based

Jan 2024 - Present (2 years 9 months)

Delivered freelance software projects end-to-end, including requirements gathering, development, API testing, deployment, and client handover. Built Python/FastAPI and Flask REST APIs with PostgreSQL, JWT/OAuth, RBAC, and third-party integrations, using AI-assisted coding tools daily.