Sagi Menahem | Full Stack Developer

Full Stack Developer & CS Student

Constructing robust systems with Java Spring Boot, React, and low-level C architecture.

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ABOUT

I am a 5th-year Computer Science student at the Open University of Israel, specializing in backend architecture and high-performance systems. My passion lies in bridging the gap between complex algorithms and intuitive user interfaces. From low-level memory management in C to scalable microservices in Java, I build digital products that are fundamentally robust.

EducationB.Sc. Computer Science (OpenU)

FocusBackend & System Arch

LocationPetah Tikva, IL

WORK

SynchBoard

A real-time collaborative whiteboard platform enabling teams to ideate together, no matter where they are.

Java Spring BootWebSocketsReactDockerPostgreSQLSTOMPJPA/Hibernate

Live Demo GitHub

Scroll to explore features

SynchBoard collaborative whiteboard interface

Real-Time Collaboration

Draw, brainstorm, and create together in real-time. Every stroke syncs instantly across all connected users with sub-millisecond latency, creating a seamless collaborative experience.

WebSocketConfig.java

@EnableWebSocketMessageBroker

public class WebSocketConfig {

public void configureMessageBroker(Registry r) {

r.enableStompBrokerRelay("/topic")

.setRelayHost("artemis");

}

Enterprise-Grade Architecture

Built with Spring Boot and STOMP protocol over ActiveMQ Artemis for reliable message delivery. Features offline resilience with automatic reconnection, message queuing, and optimistic UI updates.

System Architecture

React Frontend

Nginx Load Balancer

Spring Boot API

WebSocket Service

PostgreSQL

ActiveMQ

Docker

Production-Ready Stack

Dockerized deployment with PostgreSQL, Nginx reverse proxy, and automated SSL. Features JWT authentication, Google OAuth2, email verification, and role-based permissions.

SynchBoard

Demo Code

A real-time collaborative whiteboard platform enabling teams to ideate together, no matter where they are.

Java Spring BootWebSocketsReactDockerPostgreSQLSTOMPJPA/Hibernate

Real-Time Collaboration

Draw, brainstorm, and create together in real-time. Every stroke syncs instantly across all connected users with sub-millisecond latency, creating a seamless collaborative experience.

Enterprise-Grade Architecture

WebSocketConfig.java

@EnableWebSocketMessageBroker

public class WebSocketConfig {

public void configureMessageBroker(Registry r) {

r.enableStompBrokerRelay("/topic")

.setRelayHost("artemis");

}

Built with Spring Boot and STOMP protocol over ActiveMQ Artemis for reliable message delivery. Features offline resilience with automatic reconnection, message queuing, and optimistic UI updates.

Production-Ready Stack

System Architecture

React Frontend

Nginx Load Balancer

Spring Boot API

WebSocket Service

PostgreSQL

ActiveMQ

Docker

Dockerized deployment with PostgreSQL, Nginx reverse proxy, and automated SSL. Features JWT authentication, Google OAuth2, email verification, and role-based permissions.

Other Projects

MasterDealer

A full-stack poker session tracking platform with real-time updates, multi-tenant group management, and smart settlement algorithms. Features multi-language support including Hebrew RTL.

Next.jsReactTypeScriptSupabaseTailwind CSS

Code Live Demo

Artist Portfolio

A high-performance, visually rich portfolio website for an artist. Features interactive galleries, lightbox viewing, and responsive design optimized for mobile performance.

ReactTailwind CSSViteUX/UI Design

Code Live Demo

RV Insurance Landing Page

A commercial landing page for an insurance agency focusing on conversion and accessibility. Includes automated email integration via EmailJS and strict performance optimization.

ReactAccessibilityEmailJSCommercial

Code Live Demo

System Assembler

A complex system programming project implementing a two-pass assembler in C. Handles dynamic memory allocation, symbol table management, and binary code generation for a custom CPU architecture.

C LanguageMemory ManagementMakefilesLow LevelData Structures

Code

Java BlackJack

A classic implementation of BlackJack using Java Swing. Demonstrates strong Object-Oriented Programming (OOP) principles, multi-threading, and event-driven architecture.

JavaSwingOOPGame Dev

Code

MasterDealer

A full-stack poker session tracking platform with real-time updates, multi-tenant group management, and smart settlement algorithms. Features multi-language support including Hebrew RTL.

Next.jsReactTypeScriptSupabase+1

Click to view live site

Artist Portfolio

A high-performance, visually rich portfolio website for an artist. Features interactive galleries, lightbox viewing, and responsive design optimized for mobile performance.

ReactTailwind CSSViteUX/UI Design

Click to view live site

RV Insurance Landing Page

A commercial landing page for an insurance agency focusing on conversion and accessibility. Includes automated email integration via EmailJS and strict performance optimization.

ReactAccessibilityEmailJSCommercial

Click to view live site

System Assembler

A complex system programming project implementing a two-pass assembler in C. Handles dynamic memory allocation, symbol table management, and binary code generation for a custom CPU architecture.

C LanguageMemory ManagementMakefilesLow Level+1

Java BlackJack

A classic implementation of BlackJack using Java Swing. Demonstrates strong Object-Oriented Programming (OOP) principles, multi-threading, and event-driven architecture.

JavaSwingOOPGame Dev

Swipe to see more projects

SKILLS

React

TypeScript

Tailwind CSS

Vite

Framer Motion

Three.js

Astro

GSAP

Java Swing

Java

Spring Boot

Spring Security

Spring WebSocket

REST API

Node.js

Assembly

Two-Pass Assembler

Linux

Bash

Makefile

PostgreSQL

JPA/Hibernate

STOMP

ActiveMQ Artemis

WebSocket

JWT

OAuth2

Google Auth

Docker

Git

Nginx

ESLint

Prettier

Gradle

Drag to explore

CONTACT

Let's Build Something

Have a project in mind? I'm always open to discussing new opportunities and interesting challenges.

Sagi Menahem - Full Stack Developer

ABOUT

WORK

SynchBoard

Real-Time Collaboration

Enterprise-Grade Architecture

Production-Ready Stack

SynchBoard

Real-Time Collaboration

Enterprise-Grade Architecture

Production-Ready Stack

Other Projects

MasterDealer

Artist Portfolio

RV Insurance Landing Page

System Assembler

Java BlackJack

MasterDealer

Artist Portfolio

RV Insurance Landing Page

System Assembler

Java BlackJack

SKILLS

CONTACT