# Georges Hajjar

Georges Hajjar is a remote worker on Himalayas, Senior Full Stack Developer at CryptoPay, based in Lebanon.

Source: https://himalayas.app/@georgeshajjar

```text
Senior Full-Stack Engineer at CryptoPay architecting a secure crypto payment gateway, from payment flows and integrations to PostgreSQL.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | Lebanon |
| Authorized to work in | Lebanon |
| Salary expectations | 65k+ USD |
| Job categories | Full Stack Engineer, Technical Lead, Backend Engineer, Frontend Engineer |
| Skills | Fullstack Development, NodeJS, ExpressJS, React, TypeScript, PostgreSQL, Payment Gateway Integration, Crypto Payments, Multi tenant architecture, Row level security, Database Schema Design, Database Migration, RESTful API Design, Third Party Integrations, Microservices |
| LinkedIn | https://linkedin.com/in/georgeshajjar |

## About

```text
At CryptoPay, I’m architecting and building a secure crypto payment gateway, working across payment flows, gateway integrations, and PostgreSQL schema design and migrations.

At LiquorChat, I architected a migration from MongoDB to PostgreSQL, implementing Row-Level Security for tenant isolation and pgvector for vector search. I also delivered Conversational AI modules using RAG and vector search, alongside Smart Kiosk and customer analytics features.

At Docclik, I built full-stack features and RESTful APIs for sensitive document-management workflows, and developed a microservices architecture. I also made architectural decisions and led code reviews across the platform.
```

## Experience

### Senior Full Stack Developer (current)

CryptoPay. May 2026 - Present

```text
Architect and build a secure crypto payment gateway end-to-end, owning technical architecture and engineering decisions across a Node.js/Express, React, TypeScript, and PostgreSQL stack. Design and implement complex payment flows and gateway integrations, and enforce a security-first posture for a regulated financial domain.
```

Skills: NodeJS, Express, React, TypeScript, PostgreSQL, Docker, CI-CD, Payment-Gateways, Crypto-Payments, Security, Code-Review, AI-Augmented-Development

### Full Stack Developer (Senior Full Stack)

LiquorChat. Jun 2025 - Apr 2026

```text
Owned technical architecture and engineering decisions across a Node.js/Express, React, and PostgreSQL platform, setting the quality bar and reviewing all code merged to production. Architected and executed a database migration from MongoDB to PostgreSQL, implementing Row-Level Security (RLS) for multi-tenant isolation and pgvector for vector search.
```

Skills: NodeJS, Express, React, PostgreSQL, MongoDB, RLS, Pgvector, Docker, CI-CD, REST-APIs, AI-Chatbots, RAG, Vector-Search, Code-Review

### Full Stack Developer

Docclik. Mar 2021 - Jun 2025

```text
Acted as senior engineer making architectural decisions independently and leading code reviews across a React, Angular, and Node.js/Express platform. Built and scaled production full-stack features and RESTful APIs for document management workflows handling sensitive data with a security-first approach.
```

Skills: React, Angular, NodeJS, Express, PostgreSQL, MongoDB, MySQL, Microservices, REST-APIs, Security, Code-Review

### Quality Assurance Analyst

Ecomz. Oct 2019 - May 2021

```text
Owned automated and manual testing strategies, applying strong code-review judgment to maintain a high quality bar before production. Built regression suites and QA processes that reduced post-release defect rates and strengthened production reliability and security.
```

Skills: Testing-Automation, Manual-Testing, Regression-Testing, QA-Processes, Code-Review

### IT Support Specialist

Antaki Group. Apr 2018 - Aug 2019

```text
Maintained production systems and infrastructure, diagnosing issues through analytical root-cause analysis to reduce resolution time.
```

Skills: IT-Support, Production-Systems, Infrastructure, Root-Cause-Analysis

## Education

### Arts, Science and Technology University in Lebanon (AUL)

Bachelor's Degree, Computer Science. 2016 - 2020

```text
Bachelor's Degree in Computer Science from the Arts, Science and Technology University in Lebanon, completed in 2020.
```

## Tech stack

- GitHub
- React Native
- MySQL
- PostgreSQL
- MongoDB
- Node.js
- Next.js
- NestJS
- React
- HTML5
- ExpressJS
- TypeScript
- Git
- Docker
- pgvector

To contact Georges, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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