Hi, I'm Georges Walid Hajjar

Senior Full Stack Developer

Results-driven Senior Full Stack Developer with 7+ years of experience in IT and 5+ years specializing in building scalable, high-performance web applications using the MERN and MEAN stacks. Currently engineering AI-powered retail solutions at LiquorChat, architecting RAG pipelines, vector search systems with PostgreSQL/pgvector, and intelligent chatbot platforms. Passionate about leveraging AI integration and modern web technologies to ship production-grade, user-centric solutions.

Get In TouchView My Work

About Me

A brief introduction

Results-driven Senior Full Stack Developer with 7+ years of experience in IT and 5+ years specializing in building scalable, high-performance web applications using the MERN and MEAN stacks. Currently engineering AI-powered retail solutions at LiquorChat, architecting RAG pipelines, vector search systems with PostgreSQL/pgvector, and intelligent chatbot platforms. Passionate about leveraging AI integration and modern web technologies to ship production-grade, user-centric solutions.

7+

Years in IT

5+

Years Full Stack

Skills

Technologies I work with

Languages

JavaScript (ES6+)TypeScriptPythonHTML5CSS3SQL

Front-End

React.jsNext.jsAngularSolid.jsTailwind CSSReduxResponsive DesignWebpackVite

Back-End

Node.jsExpress.jsNestJSREST APIsGraphQLMicroservicesMVCWebSockets

Databases

PostgreSQLMongoDBMySQLRedisPrismaTypeORM

AI & ML

RAGVector SearchLLM IntegrationPrompt EngineeringAI Chatbot DevelopmentOpenAI API

DevOps & Cloud

DockerGitGitHub ActionsCI/CD PipelinesAWS (EC2, S3, Lambda)LinuxNginx

Testing

JestCypressUnit TestingIntegration TestingE2E TestingTDD

Soft Skills

Agile/ScrumSystem DesignCode ReviewTeam LeadershipTechnical DocumentationCross-Functional Collaboration

Experience

My professional journey

Senior Full Stack Developer

LiquorChat

Jun 2025 - Present

Beirut, Lebanon

  • Migrated entire backend from Node.js/Express to NestJS and database from MongoDB to PostgreSQL with RLS and pgvector, reducing API response times by 40%

  • Built the POS data sync pipeline handling 100K+ retail records daily

  • Delivered 5 core AI modules in under 9 months: AI Chat, Smart Kiosk, Order History & Analytics, Customer Analytics, Customer Personalization Profiles

  • Leveraged AI tools to produce scalable code at 3x faster velocity

  • Engineered full-stack features using React.js/Next.js + NestJS serving 50+ retail clients

  • Designed 20+ RESTful APIs and GraphQL endpoints

  • Integrated third-party AI services processing 500K+ transactions

  • Optimized performance reducing page load times by 55%

Full Stack Developer

Docclik

Mar 2021 - Jun 2025

Beirut, Lebanon

  • Architected front-end using React.js, Next.js, Angular with TypeScript

  • Built 15+ back-end services and RESTful APIs using Node.js and Express.js for 500+ enterprise users

  • Optimized MongoDB and MySQL database schemas improving query performance by 60%

  • Reduced mobile bounce rates by 35% through adaptive UI

  • Led full project lifecycles coordinating with 4 cross-functional teams

  • Developed microservices architecture reducing deployment time by 45%

  • Built reusable component library used across 3 products

  • Introduced Jest and Cypress achieving 80% code coverage

Quality Assurance Analyst

Ecomz

Oct 2019 - May 2021

Lebanon

  • Identified 200+ critical bugs before production

  • Improved platform stability by 25%

  • Maintained 300+ test cases with Cypress

  • Reduced post-release defect rates by 40%

IT Support Specialist

Antaki Group

Apr 2018 - Aug 2019

Lebanon

  • Technical support for 100+ employees

  • Reduced ticket resolution time by 30%

  • Supported 3 office locations

Education & Languages

Academic background

Education

Bachelor's Degree in Computer Science

Arts, Science and Technology University in Lebanon (AUL)

2016 - 2020

Languages

English

Professional

Arabic

Native

French

Conversational

Get In Touch

I'm always open to new opportunities and collaborations. Feel free to reach out!

Email

HajjarGeorges@outlook.com

GitHub

https://github.com/georgesh96

Location

Beirut, Lebanon