Looking for a job

Jaffer User

@jafferuser

Message

I build and run production full-stack software, from React interfaces to Python and AI systems.

United States

Message

What I'm looking for

I’m looking to own full-stack product work end to end, including system design, production reliability, and AI/LLM features, while mentoring engineers and collaborating closely with product, design, data, and infrastructure teams.

At Devsinc, I architect and ship full-stack features across React, TypeScript, Python, PostgreSQL, and Redis. I lead document search, summarization, and support assistants using OpenAI and Anthropic APIs, RAG, pgvector, and prompt evaluation harnesses.

I’ve spent 9+ years owning software from product conversations through production operations. I improve reliability through Docker, GitHub Actions, pytest coverage gates, staged rollouts, root-cause analysis, and regression tests, while leading system design, code reviews, and mentoring engineers.

Experience

Work history, roles, and key accomplishments

Current

Lead Software Engineer

Current

Devsinc

Jun 2024 - Present (2 years 3 months)

Architect and ship full-stack features end to end across React and TypeScript front ends and Python (FastAPI, Django) services backed by PostgreSQL and Redis. Led LLM work on OpenAI and Anthropic APIs with RAG and pgvector, and established Docker and GitHub Actions pipeline with pytest coverage gates.

React TypeScript Python fastAPI Django PostgreSQL Redis OpenAI Anthropic RAG Pgvector Docker GitHub Actions Pytest System Design Code Review Mentorship

Senior Software Engineer

Devsinc

Aug 2023 - Jun 2024 (10 months)

Built a shared React and TypeScript component library adopted by three product teams, cutting new-screen delivery time by about 30%. Reduced a core API p95 latency by about 45% by eliminating N+1 queries, adding targeted PostgreSQL indexes, and introducing Redis caching.

React TypeScript Component Libraries PostgreSQL Redis Performance Optimization API Optimization

Software Engineer

Exynex

Sep 2019 - Aug 2023 (3 years 11 months)

Designed the REST API and PostgreSQL schema behind the core product and kept both backward compatible as usage grew. Built and owned full-stack web and mobile features on a two-week release cadence for a scaling product.

REST APIs PostgreSQL Fullstack Development Web Development Mobile Development CI CD Structured logging Testing Automation

Associate Software Engineer

Stealth Startup

Feb 2017 - Sep 2019 (2 years 7 months)

Delivered features in Python and JavaScript in a production codebase, progressing from bug fixes to owning full features within 18 months. Built SQL reporting and scheduled background jobs that replaced manual, error-prone data pulls, and refactored the most failure-prone modules behind automated tests.

Python JavaScript SQL Background Jobs Testing Automation Refactoring