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Sithum Himsara

@sithumhimsara

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I build responsive full-stack web applications with React, Node.js, Express, and scalable databases.

Sri Lanka

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I've delivered 15+ web development projects for startups, service businesses, digital agencies, and freelance clients, managing everything from requirements and architecture to deployment and post-launch support.

At Botclam Company, I built 5+ production-ready React and Node.js applications and implemented 15+ RESTful APIs with 99% uptime. I also optimized database queries to reduce load time by 40% and contributed across agile sprints, testing, deployment, and maintenance.

I build responsive, user-focused products using React.js, Node.js, Express.js, MySQL, MongoDB, and PostgreSQL. My project work includes employee management, e-commerce, dental clinic management, and an AI-powered code review and bug prediction platform.

Experience

Work history, roles, and key accomplishments

Current

Freelance Full Stack Developer

Current

Self Employed

Feb 2023 - Present (3 years 7 months)

Independently designed, developed, and deployed custom web applications and websites for diverse clients. Managed the entire project lifecycle from requirements analysis to post-launch support.

React NodeJS ExpressJS JavaScript Python PHP WordPress MySQL MongoDB PostgreSQL Docker Postman

Full Stack Developer Intern

Botclam Company

Sep 2025 - Apr 2026 (7 months)

Developed and maintained full-stack web applications using modern frontend and backend technologies. Collaborated with senior developers and cross-functional teams to design, implement, and deploy production-ready solutions.

React NodeJS ExpressJS JavaScript (ES6+)HTML5 CSS MongoDB MySQL Git GitHub Agile

Education

Degrees, certifications, and relevant coursework

ICBT Campus

Bachelor of Science, Software Engineering

2023 -

Pursuing a Bachelor of Science in Software Engineering, covering full stack web development, software engineering principles, database management, and agile methodologies.