Mohamed Osama Zahran

• Deliver 4 production frontend systems in parallel for cross-regional European operations — real-time tailgating detection, 3D building viewer, invoice management, NLP tooling — meeting European compliance standards.
• Collaborate daily with multicultural, cross-functional teams in a corporate European environment.

• Built a multilingual admin/staff CRM dashboard (Next.js 15, TanStack Table/Query, Recharts) with role-based navigation and real-time cache invalidation.
• Developed the marketing website with advanced scroll animations (GSAP, Lenis), next-intl i18n routing, Zod-validated lead capture, and Turbopack optimization.

• Led the frontend track of the Google Developer Student Club — React, Next.js, and TypeScript workshops for 50+ students.

• PR #11831 — CLI no longer overwrites a customized lib/utils.ts on init (guard generalized beyond Laravel), with on-disk regression tests.
• PR #11832 — fixed Select trigger overflow with long values (flexbox min-width:auto root cause), fix applied across all registry bases.

Production government healthcare portal (citizen, doctor, admin portals; live on Vercel) — contributed the majority of commits as a 2-dev team: full admin verification workflow (4 phases), doctor clinical workspace, citizen insurance experience on OpenAPI contracts with role-based auth.

Multi-agent shopping pipeline (LangGraph): one-sentence goal → ranked products, conversational answer, validated UI plan over SSE streaming. Deterministic scorer with Pydantic v2; 390 passing tests (224 backend + 166 frontend); real-LLM swap-in ready.

Modular-monolith backend for an Egyptian home-nursing marketplace: auth, booking, payment, chat, notifications — serving patient/nurse Flutter apps and a React admin. Geospatial matching (MongoDB 2dsphere), WebSocket chat, MinIO S3 media.

Arabic-first RTL e-commerce for a school-uniform retailer: catalog, COD checkout, Bosta courier shipping, per-order token tracking URLs. Built the .NET 10 backend: JWT, Hangfire jobs, FluentValidation, audit logging.

Full CRM platform: multi-tenant JWT auth with per-user permissions, SignalR real-time notifications, Hangfire jobs — plus an AI layer: Llama-3.3/Qwen tool-calling backend and toxicity moderation (DistilBERT/DeHateBERT) at sub-100ms on high-confidence predictions.

Gym subscription API with cryptographic QR check-in: atomic session deduction under concurrency (SQL applocks + conditional updates), RFC 7807 errors, structured logging, xUnit suite.

Tailgating Detection (live MJPEG, license-plate OCR, audit trails) · 3D Building & Space Viewer (Dollhouse/Panorama/Split, room-aware navigation) · AGL Invoice Management (RHF+Zod, CV+AI pipeline) · Qalam Vision (Arabic NLP keyword extraction, Label Studio).

E-learning platform with 3D interactive labs, learning paths, quiz engine, collaborative rooms, Google OAuth, subscriptions, admin dashboard.

Multilingual translation product (AR/EN/FR) with Paymob billing, daily-quota credits, admin monitoring, blog module.