Hasnain Aftab

Full Stack Developer with 3+ years of experience building production-grade web applications and AI-integrated software systems. Skilled in architecting scalable SaaS platforms using React, Next.js, Node.js, Express, and PostgreSQL, with hands-on experience integrating Claude API, LangChain, RAG pipelines, and vector databases into real products. I focus on building secure, well-structured applications that combine strong user experience with practical, production-ready AI functionality.

Full Stack Web Developer at BitzSol (2025-08 – Present)

• Engineered 10+ production-grade web applications using React, Next.js, Node.js, and MongoDB, all successfully deployed to live environments.
• Integrated AI-powered features into client applications, connecting LLM backends to responsive frontends via REST APIs.
• Reduced API response time by ∼3 seconds through query optimization and efficient REST API design, improving overall application performance.
• Built reusable React component libraries per project, reducing redundant code and ensuring UI consistency at scale.

Full Stack Developer at Freelance (2023-07 – Present)

• Delivered 10+ full-stack web solutions for international clients across 3 countries.
• Built and launched 5–7 page responsive websites per engagement, integrating authentication, REST APIs, and third-party services end to end.
• Maintained 100% client satisfaction rate across all engagements, resulting in repeat business and referrals.

Frontend Developer at CafeVista (2022-01 – 2023-07)

• Designed and delivered responsive, mobile-first UIs across multiple client projects using React and Tailwind CSS, maintaining consistent design standards throughout.
• Collaborated closely with backend developers to integrate REST APIs, troubleshoot bugs, and iteratively improve frontend performance and user experience.
• Took ownership of frontend architecture decisions on key projects, building reusable component libraries that reduced development time across the team.

BS in Information Technology – NUML (2022-02 – 2026-02)