Wassim C.

Python backend engineer with 4 years of experience shipping APIs, automation systems and data pipelines for US companies and international clients. Upwork Top Rated Plus: 34 contracts, 4,000+ hours, 100% Job Success, 5.0 across 22 reviews. Two long-term roles came through Upwork: a backend/ETL engineer seat at a New York legal-AI company (12 months) and a software engineer role at a Kentucky IT-services firm (2 years). What I deliver ✅ Backend APIs and services — FastAPI, Django/DRF, Flask, PostgreSQL, Redis, Celery, auth (OAuth2/JWT), tests with Pytest ✅ ETL and data pipelines — ingestion, cleaning, transformation, quality checks, scheduling; SQL optimisation ✅ Automation — scheduled bots, browser automation (Selenium/Playwright), email and API integrations (Gmail, Outlook, Twilio, Telegram, Google APIs) ✅ AI/LLM integration — LangChain/LangGraph assistants with persistent state, OCR and document extraction with confidence scoring, computer-vision models in production ✅ Shipping and operating — Docker, AWS (Lambda, ECS, S3), GitHub Actions CI/CD, logging and monitoring Recent work • Medical-AI inference backend: FastAPI, async Celery jobs, S3, audit logging, rate limiting, signed PDF reports • Construction bid-intake platform: Django REST + React, Celery/Redis, Gmail/Outlook/IMAP ingestion, webhooks, document processing • Rescued and completed stalled Django/Flask codebases (Twilio, PandaDoc, Telegram shop bot on PostgreSQL) under deadline How I work Clear written updates, small reviewable commits, tests on anything that touches money or data, and honest estimates. I ask the questions up front so the first delivery is the right one. Available for long-term contracts and contract-to-hire. Portfolio: wassimcheikh.dev