Ahmad B.

Fullstack Engineer | Data-Intensive Systems, ETL Automation

I build data systems that refuse to break — end-to-end platforms that extract from hostile sources, transform through rigorous pipelines, and serve through production-grade APIs with properly architected databases underneath. I don't write scripts. I design systems: ERDs, normalization strategy, indexing for scale, session state machines, anti-detection infrastructure, and frontend interfaces that actually consume the data I move. CORE ENGINEERING • Fullstack architecture — Frontend (React/JS) to backend (FastAPI/Django) to database (PostgreSQL/Redis) with Dockerized deployment and CI/CD discipline • Database & ERD design — Schema architecture, relationship modeling, query optimization, and migration strategy for data-heavy applications • ETL & data pipelines — Extraction from APIs and protected portals, transformation with validation gates, and loading into structured warehouses with full audit trails • Anti-bot & session engineering — JA3/TLS fingerprinting, proxy rotation, challenge mitigation (Cloudflare, DataDome, PerimeterX, Akamai, reCAPTCHA) • Enterprise auth integration — SAML 2.0, OAuth2/PKCE, ADFS, F5 BIG-IP APM, AWS Cognito with session recovery and intelligent retry logic SELECTED RESULTS Pharma catalog ingestion (NDA) — ~5M+ products across 26 vendors via reverse-engineered APIs; eliminated HTML parsing fragility; 3× throughput via session warmup routing Insurance & banking portals (NDA) — SAML/OAuth platform with MFA lifecycle management; API reverse-engineering to minimize browser automation; auto-classified failure recovery Banking payment automation — End-to-end Interac e-Transfer for tier-1 Canadian bank; Kameleo + Playwright session harvesting with HAR replay via curl_cffi; HMAC-signed FastAPI workers with 12× retry callbacks STACK Python | JavaScript | React | Django | FastAPI | PostgreSQL | Redis | Celery | Docker | SQL | ERD Design | Database Configuration | Playwright | SeleniumBase | Camoufox | curl_cffi | GraphQL | REST | ETL/ELT | Data Pipelines If your data is stale, your pipeline is unreliable, or your target actively fights extraction — send me the URL. I'll architect the fullstack system to fix it