Saifullah Haneef

MERN Stack Developer with 2+ years of hands-on experience building responsive, scalable, and production-ready full-stack web applications. Strong expertise in MongoDB, Express.js, React.js, Node.js, JavaScript (ES6+), Tailwind CSS, RESTful API development, database optimization, component-based architecture, and state management. Experienced with Docker, AWS, CI/CD pipelines, Git, GitHub, and cloud deployment, with a strong understanding of system design and scalable application architecture.

Also experienced in AI and LLM application development using LangChain and LangGraph, including LLM integrations, AI-powered applications, and intelligent workflows. Passionate about developing clean, maintainable, secure, and high-performance software solutions while continuously exploring modern technologies.

Backend Developer at MEK SOFT (2025-10 – 2026-03)

6 Months Paid Internship

• Developed and maintained backend services and RESTful APIs using Node.js and Express.js.
• Designed and integrated MongoDB databases with optimized schemas and queries.
• Implemented authentication, validation, API integrations, and server-side business logic.
• Collaborated with frontend developers to integrate APIs with React-based applications.
• Used Git and GitHub for version control and collaborative development.
• Assisted with deployment, debugging, and production troubleshooting.
• Followed clean-code practices and contributed to application performance and reliability improvements.

Full-Stack Web Development (Present)

2+ Years of Practical Experience

• Built full-stack web applications using the MERN stack and modern JavaScript technologies.
• Developed responsive and reusable user interfaces using React.js and Tailwind CSS.
• Designed RESTful APIs and integrated frontend applications with backend services.
• Worked with MongoDB database design, data modeling, and query optimization.
• Implemented authentication, authorization, validation, and secure API communication.
• Containerized applications using Docker and worked with AWS for cloud deployment.
• Worked with CI/CD pipelines to automate application build and deployment workflows.
• Applied system design principles to develop scalable and maintainable applications.
• Developed AI/LLM-based solutions using LangChain and LangGraph.
• Integrated AI-powered workflows and LLM capabilities into web applications.
• Used Git and GitHub for version control and collaborative development.

BS in Software Engineering – Virtual University of Pakistan (2026-03)