Guy Bernstein - Backend Developer

About Me

I'm a dedicated Backend Developer with a solid educational background in computer science and programming.

Hardworking and passionate about creating scalable solutions, I specialize in building AI-powered applications and distributed systems.

View all projects on GitHub Professional profile

Technologies & Tools

J

Java

SB

Spring Boot

PY

Python

PG

PostgreSQL

M

MongoDB

C

Cassandra

R

Redis

K

Kafka

D

Docker

K8s

Kubernetes

AWS

GCP

ES

Elasticsearch

JWT

JWT Auth

OAuth

OAuth 2.0

Git

Personal Projects

AI-Powered Platform

Spring Boot + AI

WhatsApp Organizer

Engineered AI-powered message organization platform with Anthropic's AI and WhatsApp Business API. Features intelligent message categorization, advanced search functionality, and secure OAuth 2.0 authentication with Docker containerization for scalable deployment.

Spring Boot Anthropic AI PostgreSQL GCP OAuth 2.0 Docker

Watch Demo Live Demo

Educational Platform

Spring Boot + ChatGPT

AI Learning Hub

Developed educational platform for 6th grade ASD students with ChatGPT integration. Implemented automated lesson generation, customized interactive games, and creative art activities adapted to individual student profiles and learning preferences.

Spring Boot ChatGPT PostgreSQL JWT Auth AWS S3

Watch Demo Live Demo

Web Crawling Platform

Kafka + Elasticsearch

Search Engine

Engineered high-performance web crawling platform with DFS algorithm. Built distributed task processing system using Apache Kafka and Elasticsearch. Features intelligent address extraction, distributed crawling management, and efficient data storage with Redis for rapid retrieval.

Apache Kafka Redis Elasticsearch DFS Algorithm

Case Studies

Deep dive into the problem-solving strategies and technical decisions behind my most impactful projects

WO

WhatsApp Organizer

!

The Problem

Receive hundreds of WhatsApp messages daily, leading to:

• Losing track of saved data / Unorganized
• Lost inquiries in message overflow
• No systematic way to prioritize urgent messages

✓

The Solution

AI-powered message categorization system:

• Anthropic AI for intelligent message understanding
• Real-time categorization into custom categories
• Advanced search with natural language queries

⚙

Technical Excellence

Best practices implemented:

• Microservices Architecture: Separated AI processing from API handling
• Event-Driven Design: JMS for async message processing
• Storage Strategy: GCP - document storage & Postgres - metadata
• Security First: OAuth 2.0 + WhatsApp encrypted messages

📊 Impact & Results

95%

Message Categorization Accuracy

3x

Faster Response Time

20+

Business Users

1000+

Messages Processed

ALH

AI Learning Hub

!

The Challenge

6th grade ASD students face unique educational challenges:

• Traditional teaching methods not optimized for ASD
• Lack of personalized content for individual needs
• Teachers overwhelmed creating custom materials

✓

Innovative Approach

AI-powered adaptive learning platform:

• ChatGPT integration for dynamic content generation
• Student profile system tracking preferences & progress
• Interactive games adapted to learning styles
• Creative activities with visual & audio elements

⚙

Problem-Solving Strategy

Key architectural decisions:

• Adaptive AI Prompting: Context-aware prompts based on student profiles
• Modular Content System: Reusable lesson components
• Real-time Analytics: Progress tracking with PostgreSQL
• Scalable Storage: AWS S3 for multimedia content

🎯 Measurable Outcomes

40%

Improved Engagement

85%

Teacher Satisfaction

500+

Custom Lessons Created

15min

Avg. Lesson Prep Time

Key Engineering Principles Applied

1

User-Centric Design

Every technical decision driven by real user needs and measurable impact

2

Scalable Architecture

Built with growth in mind using microservices and cloud-native patterns

3

AI-First Innovation

Leveraging cutting-edge AI to solve complex real-world problems

Background

Bachelor of Science in Computer Science

The Open University of Israel

GPA: 86

Comprehensive Computer Science education with focus on cutting-edge technologies, software architecture, and innovative system design

Backend Programming Specialization

CodingBC

Hands-on experience and best practices in Backend programming through intensive practical training.

Military Service - Kfir Brigade 90

Samaria Region

2017 — 2020

Developed leadership skills, discipline, and teamwork capabilities during military service.

Core Competencies

61.7K

Lines of Code

83rd

GitHub Percentile

2.4

Person-Years of Code

20+

Active Users

Language Skills

Hebrew Native

English Fluent

Spanish Basic

Let's Build Something Amazing

I'm seeking opportunities to join a dynamic and supportive environment where I can contribute to building scalable solutions.

Get in Touch