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Hi, I’m Saifeddine Makhlouf, a Lead Full-Stack Developer with 6+ years of building production-ready React + Node.js apps and integrating Generative AI / LLMs. I currently lead a 4-person engineering team at YOTSYSTEM, steer sprints, perform code reviews, and mentor teammates to follow best practices for scalable software. I’ve shipped 10+ freelance projects, including two GenAI platforms CraftGent and JuliaBot, and launched two Google Play apps (Calliverse and Blink Delivery). I’m excited by GenAI product work at scale and am open to senior or lead roles on GenAI teams.…Hi, I’m Saifeddine Makhlouf, a Lead Full-Stack Developer with 6+ years of building production-ready React + Node.js apps and integrating Generative AI / LLMs. I currently lead a 4-person engineering team at YOTSYSTEM, steer sprints, perform code reviews, and mentor teammates to follow best practices for scalable software. I’ve shipped 10+ freelance projects, including two GenAI platforms CraftGent and JuliaBot, and launched two Google Play apps (Calliverse and Blink Delivery). I’m excited by GenAI product work at scale and am open to senior or lead roles on GenAI teams.

Saifeddine Makhlouf

Full Stack Developer, Web Developer, Back-End Developer, +2

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Hi, I’m Saifeddine Makhlouf, a Lead Full-Stack Developer with 6+ years of building production-ready React + Node.js apps and integrating Generative AI / LLMs. I currently lead a 4-person engineering team at YOTSYSTEM, steer sprints, perform code reviews, and mentor teammates to follow best practices for scalable software. I’ve shipped 10+ freelance projects, including two GenAI platforms CraftGent and JuliaBot, and launched two Google Play apps (Calliverse and Blink Delivery). I’m excited by GenAI product work at scale and am open to senior or lead roles on GenAI teams.…Hi, I’m Saifeddine Makhlouf, a Lead Full-Stack Developer with 6+ years of building production-ready React + Node.js apps and integrating Generative AI / LLMs. I currently lead a 4-person engineering team at YOTSYSTEM, steer sprints, perform code reviews, and mentor teammates to follow best practices for scalable software. I’ve shipped 10+ freelance projects, including two GenAI platforms CraftGent and JuliaBot, and launched two Google Play apps (Calliverse and Blink Delivery). I’m excited by GenAI product work at scale and am open to senior or lead roles on GenAI teams.

Available to hire

Hi, I’m Saifeddine Makhlouf, a Lead Full-Stack Developer with 6+ years of building production-ready React + Node.js apps and integrating Generative AI / LLMs. I currently lead a 4-person engineering team at YOTSYSTEM, steer sprints, perform code reviews, and mentor teammates to follow best practices for scalable software.

I’ve shipped 10+ freelance projects, including two GenAI platforms CraftGent and JuliaBot, and launched two Google Play apps (Calliverse and Blink Delivery). I’m excited by GenAI product work at scale and am open to senior or lead roles on GenAI teams.

Skills

Experience Level

Expert

Expert

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Expert

Language

English

Fluent

French

Advanced

Arabic

Fluent

Work Experience

Lead Full-Stack Developer at YOTSYSTEM

January 1, 2026 - Present

Lead a 4-person engineering team across React, Node.js, and React Native, running sprints, conducting code reviews, and mentoring on full-stack best practices. Designed core platform architecture in Node.js/TypeScript with PostgreSQL and MongoDB, handling 50K+ API requests daily via REST and event-driven services. Built secure backend microservices, API gateways, and JWT/RBAC authentication workflows. Shipped cross-platform React Native + TypeScript mobile apps with real-time WebSockets and Firebase, integrated with the same Node.js backend. Collaborated with C-level stakeholders to scope features, set sprint priorities, and own release timelines, delivering 5+ major platform releases. Implemented GitHub Actions CI/CD pipelines with Docker for staging and production deployments.

Freelance Full-Stack & Generative AI Developer at Upwork / Fiverr

April 1, 2022 - Present

Delivered 10+ production React + Node.js and GenAI projects for international clients across mobile, web, and SaaS. Built GenAI platforms CraftGent and JuliaBot and launched apps Calliverse and Blink Delivery on Google Play, with multi-channel integrations and Stripe billing.

Software Engineering Intern — Final Year Project (PFE) at Agora

February 1, 2026 - June 1, 2026

Full-stack cinema ticket booking platform: built a responsive React.js front-end with reusable component architecture for customer and admin flows. Engineered a Spring Boot backend with Hibernate ORM across 12 relational entities, sustaining data consistency under 10K concurrent booking sessions in load testing. Implemented Apache Kafka for real-time seat-locking, eliminating double-booking and reducing booking confirmation latency to under 100ms.

Software Engineering Intern at TOPNET

January 1, 2025 - February 1, 2025

Designed and built a no-code chatbot builder platform from scratch using React.js, Node.js, and NLP APIs. Redesigned NLP conversation flows, increasing resolved chatbot queries without human escalation by 25%.