Wesam Ghrayeb

Wesam Ghrayeb

Full Stack Engineer building reliable product workflows and AI-native systems.

I build production-grade SaaS platforms, APIs, real-time workflows, and LLM-powered systems with a focus on reliability, usability, and end-to-end ownership.

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React · TypeScript · Node.js SaaS · APIs · Real-time LLM Workflows · Agent Systems

About Me

Full-stack product engineer with production SaaS experience, now deepening AI systems and agent workflows

Introduction

Hi, I'm Wesam — a Full Stack Engineer based in Israel. I build end-to-end product workflows across frontend, backend, APIs, and infrastructure, with growing hands-on experience in LLM tool-calling and reliable AI-assisted systems.

Full Stack Engineer

I ship production SaaS features with React, TypeScript, Node.js, Express, MongoDB, and MySQL — from API design and auth to deployment. I graduated from Ort Braude College with honors (excellence) and bring a strong foundation in software engineering fundamentals.

Product-Minded Builder

I take ownership from problem definition through delivery — working through ambiguity, debugging production issues, and collaborating with stakeholders to ship features that hold up under real usage.

Mentor & Educator

Alongside development, I actively mentor aspiring developers and teach technical topics including coding fundamentals, data structures, and system design. I believe in sharing knowledge and empowering others to grow in tech.

AI Systems Focus

Growing into AI Systems engineering — with strong full-stack foundations and hands-on workflow experience

I am actively building toward AI Systems and agent engineering roles. My foundation is production full-stack development — and I am applying that same reliability mindset to LLM workflows, tool-calling, structured outputs, and product-grade AI features.

LLM Tool-Calling

Sequential tool execution loops that connect models to real APIs and business logic safely.

Structured Outputs

JSON schemas and validation to keep model responses predictable and usable in production pipelines.

Agent Workflows

Multi-step agent flows with clear state, logging, and controlled handoffs between tools and services.

External API Integrations

Wiring LLM systems to third-party APIs, auth, rate limits, and real-world data sources.

Fallback & Recovery

Graceful handling when tools fail, models hallucinate, or upstream services are unavailable.

Persistent Context

Session and workflow context that survives across steps, retries, and user interactions.

Real-Time AI Interactions

Live dashboards and workflows where AI insights surface alongside real-time product data.

Observability & Validation

Logging, output checks, and debugging discipline — treating AI features like any production system.

Skills & Technologies

Organized by domain — from product frontend to AI workflows and infrastructure

Frontend

React TypeScript JavaScript HTML CSS

Backend

Node.js Express REST APIs Auth API Architecture

Databases

MongoDB MySQL SQL / NoSQL

AI Systems

LLM Workflows Tool Calling Structured Outputs Prompt Engineering Fallback Handling

Infrastructure

Docker AWS Nginx PM2

Realtime / Messaging

WebSockets Redis RabbitMQ

Architecture

Microservices Multi-Tenant SaaS RBAC / ABAC System Design

Professional Experience

End-to-end ownership across production SaaS, APIs, and real-time product workflows

Full Stack Engineer

WJS Digital | 2024–Present

Own production features end-to-end on a multi-tenant SaaS platform — API architecture, RBAC, real-time workflows, background processing, and ERP integrations. Debug live issues, improve reliability, and ship with product stakeholders under real business constraints.

Technical Instructor

Freelance | 2021–Present

Teach software engineering fundamentals — data structures, system design, and problem-solving — to academic and school students. Strengthens how I explain technical decisions and mentor teammates.

AWS re/Start Graduate

AWS | 2024 Cohort

Hands-on cloud and DevOps: EC2, S3, IAM, VPC, Linux, GitHub Actions, and CI/CD pipelines. Applied to deploying and operating production services with clearer observability habits.

Freelance Developer

Remote | Various Projects

Delivered full-stack dashboards, automation tools, and client products — often with unclear requirements and tight timelines. Practiced working with ambiguity while keeping APIs, UX, and deployment dependable.

Featured Projects

Product case studies — problem, solution, ownership, and why each build matters

AI Tool-Calling Agent

AI Tool-Calling Agent

C# LLMs Tool Calling Agent Workflow

Built an LLM tool-calling loop with sequential tool execution, structured JSON output, logging, validation, and fallback behavior for failed API/tool calls.

Problem

LLM agents need to call external tools reliably — with predictable outputs when APIs fail or return unexpected data.

Solution

Implemented a sequential tool-calling loop with structured JSON schemas, validation layers, and fallback paths for failed tool/API responses.

What I Owned

Agent loop design, tool orchestration, output validation, logging, and error recovery handling.

Why it matters: Demonstrates the reliability patterns AI Systems roles require — not just prompting, but production-grade agent behavior.

Crypto Investor Dashboard

Crypto Investor Dashboard

React Node.js MongoDB OpenAI

Full-stack dashboard with authentication, external API integrations, live/fallback crypto data, AI insight generation, loading/error states, and production deployment.

Problem

Investors need a single dashboard for live market data, portfolio context, and AI-generated insights — even when external APIs are slow or unavailable.

Solution

Built a JWT-authenticated full-stack app with external API integrations, fallback data paths, OpenAI insight generation, and polished loading/error UX — deployed on Render and Vercel.

What I Owned

Frontend, backend APIs, auth, external integrations, AI insight workflow, deployment, and error handling.

Why it matters: Shows end-to-end product delivery combining real-time data, AI features, and production deployment discipline.

B2B SaaS CRM Platform

B2B SaaS CRM Platform

React TypeScript Docker Redis

Production multi-tenant CRM platform with role-based access control, tenant isolation, microservices architecture, real-time features, and background processing.

Problem

B2B teams need isolated tenant data, role-based permissions, and real-time workflows at production scale.

Solution

Architected a multi-tenant CRM with RBAC, microservices, Redis caching, RabbitMQ background jobs, and real-time updates — containerized with Docker and deployed on AWS.

What I Owned

Full-stack features, API design, tenant isolation patterns, real-time flows, and service integration.

Why it matters: Direct evidence of production SaaS experience — the foundation for AI Systems work inside real products.

View Case Study
Moments Event Platform

Moments Event Platform

Next.js Supabase Expo Realtime

Product architecture for event workflows including host dashboard, guest RSVP, QR check-in, real-time photo wall, moderation, and staff mobile flows.

Problem

Event hosts need a unified workflow — invitations, RSVPs, on-site check-in, and a live moderated photo experience without guests installing an app.

Solution

Designed end-to-end product flows across web (Next.js + Supabase) and staff mobile (Expo) — auth, realtime photo wall, QR check-in, moderation, and multi-role access.

What I Owned

Product architecture, workflow design, realtime features, auth/roles, and cross-platform user flows.

Why it matters: Shows product-minded system design across realtime, auth, and multi-user workflows — skills that transfer directly to AI agent products.

Additional Projects

MERN Stack Applications

CRM Panel Dashboard

CRM Panel

Client/session/alert management system with full admin control and booking engine. Features real-time notifications and comprehensive analytics.

React Node.js MongoDB Socket.io
View Project
Logistics Dashboard

Flying Packages

Logistics dashboard with delivery tracking, live updates, and admin analytics. Streamlined package management system.

React Express MongoDB Real-time
View Project
E-commerce Gaming Store

Gaming Store

E-commerce site with Stripe integration, product filters, and full admin panel. Complete shopping experience with secure payments.

React Stripe E-commerce Admin Panel
Live Demo

Trading & Automation

Trading Dashboard

Trading Bots

Python-based algorithmic bots integrated with MetaTrader for auto-trading and risk control. Advanced trading strategies with real-time market analysis.

Python MetaTrader Algorithmic Trading Risk Management
View Project

Mobile Applications

Android Mobile Apps

Mobile Apps

Native Android applications including Reminder, Car Finder, Book Library, and Real Estate Listings. Built with Java and modern Android development practices.

Java Android SQLite UI/UX
View Project

Business Solutions

E-commerce Auto Parts Store

Wix Auto Parts

30K+ item e-commerce store integrated with ERP using custom Wix Code automation. Streamlined inventory management and order processing.

Wix E-commerce ERP Integration Automation
View Project
Digital Business Cards

Business Cards

Responsive digital business cards designed for a variety of industries. Modern, professional designs with interactive elements.

HTML5 CSS3 JavaScript Responsive
View Projects

Get In Touch

Open to Full Stack, AI Systems, and AI Agent engineering roles

Open to Full Stack, AI Systems, and AI Agent engineering roles. If you're hiring for someone who ships production workflows and is growing into AI-native systems — let's talk.

Contact & Links