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Hi! I'm Shane Umayanga Rajapaksha, a passionate Software Engineer with over 3 years of professional experience and 7+ years of hands-on programming through various personal and freelance projects. I specialize in backend development and Web3 technologies, focusing on building scalable and secure architectures with clean and maintainable code. I enjoy working with technologies like Node.js, Go, Python, and TypeScript, and I love tackling challenging problems in blockchain and cloud computing. I'm a strong team player who values knowledge sharing and continuous learning. Over the years, I've contributed to exciting projects like automated cryptocurrency trading platforms and hotel management systems, and I thrive in fast-paced environments where I can mentor junior developers and help teams grow. I'm always eager to connect and collaborate on innovative tech solutions.…Hi! I'm Shane Umayanga Rajapaksha, a passionate Software Engineer with over 3 years of professional experience and 7+ years of hands-on programming through various personal and freelance projects. I specialize in backend development and Web3 technologies, focusing on building scalable and secure architectures with clean and maintainable code. I enjoy working with technologies like Node.js, Go, Python, and TypeScript, and I love tackling challenging problems in blockchain and cloud computing. I'm a strong team player who values knowledge sharing and continuous learning. Over the years, I've contributed to exciting projects like automated cryptocurrency trading platforms and hotel management systems, and I thrive in fast-paced environments where I can mentor junior developers and help teams grow. I'm always eager to connect and collaborate on innovative tech solutions.

Rajapakshalage Shane Umayanga Rajapaksha

Backend Developer, Web Developer, Developer, +3

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Hi! I'm Shane Umayanga Rajapaksha, a passionate Software Engineer with over 3 years of professional experience and 7+ years of hands-on programming through various personal and freelance projects. I specialize in backend development and Web3 technologies, focusing on building scalable and secure architectures with clean and maintainable code. I enjoy working with technologies like Node.js, Go, Python, and TypeScript, and I love tackling challenging problems in blockchain and cloud computing. I'm a strong team player who values knowledge sharing and continuous learning. Over the years, I've contributed to exciting projects like automated cryptocurrency trading platforms and hotel management systems, and I thrive in fast-paced environments where I can mentor junior developers and help teams grow. I'm always eager to connect and collaborate on innovative tech solutions.…Hi! I'm Shane Umayanga Rajapaksha, a passionate Software Engineer with over 3 years of professional experience and 7+ years of hands-on programming through various personal and freelance projects. I specialize in backend development and Web3 technologies, focusing on building scalable and secure architectures with clean and maintainable code. I enjoy working with technologies like Node.js, Go, Python, and TypeScript, and I love tackling challenging problems in blockchain and cloud computing. I'm a strong team player who values knowledge sharing and continuous learning. Over the years, I've contributed to exciting projects like automated cryptocurrency trading platforms and hotel management systems, and I thrive in fast-paced environments where I can mentor junior developers and help teams grow. I'm always eager to connect and collaborate on innovative tech solutions.

Available to hire

Hi! I’m Shane Umayanga Rajapaksha, a passionate Software Engineer with over 3 years of professional experience and 7+ years of hands-on programming through various personal and freelance projects. I specialize in backend development and Web3 technologies, focusing on building scalable and secure architectures with clean and maintainable code. I enjoy working with technologies like Node.js, Go, Python, and TypeScript, and I love tackling challenging problems in blockchain and cloud computing.

I’m a strong team player who values knowledge sharing and continuous learning. Over the years, I’ve contributed to exciting projects like automated cryptocurrency trading platforms and hotel management systems, and I thrive in fast-paced environments where I can mentor junior developers and help teams grow. I’m always eager to connect and collaborate on innovative tech solutions.

Skills

Experience Level

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Work Experience

Software Engineer at Spera Labs, Colombo, Sri Lanka

May 1, 2023 - January 31, 2025

Developed and maintained backend services for MEAN-stack applications such as Karbon AI (automated cryptocurrency trading platform) and Karbon AI NFT (Web3 marketplace) using Node.js, Express.js, and MongoDB. Implemented comprehensive trading algorithms for high-frequency operations. Optimized database performance with Mongoose aggregations achieving a 2000% improvement. Architected real-time data synchronization with Bybit WebSocket API and Redis caching, enabling live updates. Built secure payment processing integrating cryptocurrency and traditional payments via Stripe, including on-chain transaction verification and NFT minting. Led code refactoring to improve scalability and maintainability, reducing onboarding time by 50%. Mentored junior developers, enhancing team productivity through knowledge transfer and code reviews.

Associate Software Engineer at Limark Technologies, Colombo, Sri Lanka

June 1, 2022 - January 31, 2023

Developed backend infrastructure for Hudini hotel management system using Go, DynamoDB, AWS Lambda, and GraphQL, targeting hotels in Europe and Dubai. Integrated IoT APIs for real-time hotel room amenities control with WebSocket communication. Managed production deployments on on-premises hotel servers using SSH and remote desktop, ensuring 99.9% uptime. Architected and deployed serverless TV channel management service for administrative dashboards. Implemented automated testing protocols with GoConvey framework achieving 90%+ code coverage to support continuous integration.