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Hamza Khan

@hamzakhan31

Senior backend engineer at Gainwell Technologies building Python services, secure REST APIs, and RAG search with pgvector and Pinecone.

United States

Message

At Gainwell Technologies, I design and maintain Python backend services and versioned REST APIs that support dependable application and data workflows.

I developed RAG workflows that retrieve enterprise content for grounded LLM requests, and built semantic search services using pgvector and Pinecone.

I deploy containerized services on AWS and support reliable releases with Terraform, CI/CD, pytest, and OpenTelemetry. Previously, I developed Python backend features at Togo’s Eateries and Peaxy, Inc.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Gainwell Technologies

Jan 2022 - Present (4 years 9 months)

Designed and maintained scalable backend services in Python using FastAPI, built versioned REST APIs, integrated OpenAI and Anthropic APIs, developed RAG workflows, and implemented semantic search with pgvector and Pinecone. Managed deployments with Docker, ECS, Lambda, and Terraform, and improved reliability with structured logging and OpenTelemetry.

Software Engineer

Togo's Eateries

Apr 2019 - Jan 2022 (2 years 9 months)

Developed backend application features with Python and Django, created REST APIs for integrations, modeled data in PostgreSQL and MySQL, implemented asynchronous tasks with Celery and Redis, and supported deployments to AWS.

Python Django REST APIs PostgreSQL MySQL SQLAlchemy Celery Redis Docker AWS S3 Pytest Jenkins Authentication Authorization Input Validation

Software Engineer

Peaxy, Inc

Jun 2013 - Apr 2019 (5 years 10 months)

Built backend features in Python for data-intensive applications, developed web endpoints using Flask and Django, implemented data access patterns for PostgreSQL and MongoDB, and supported Linux-based deployments with Docker.