15+ years of experience building production-grade web applications and AI-powered systems. I help businesses turn ideas into scalable, secure, and high-performance software.
From architecture to deployment, I provide complete solutions that help your business grow and scale.
Here are some of the projects I've developed and built for clients.

Developed and optimized a high-performance, live-booking aggregation engine for one of the Southern Hemisphere's largest OTAs. Built direct API integrations with Gold Standard suppliers (Avis, Hertz, Enterprise, Sixt), managing real-time inventory and pricing across 5 nations. Implemented multi-vertical booking systems for Cars, Campervans, and Trucks/Utes, supporting over 4 million successful rentals.

Re-architected a legacy monolithic ecosystem into a decoupled, high-performance RESTful API server. Modernized the frontend from CodeIgniter to Next.js, improving page load speeds by 40%. Engineered an asynchronous processing layer using Redis/SQS for complex travel itinerary generation and bulk supplier data synchronization.

Developed and scaled a robust price comparison marketplace for video games, DLCs, prepaid cards, software, and gaming hardware. Built real-time price aggregation and affiliate retailer integrations, enabling users to compare CD key offers across multiple partner stores. Implemented features like price-drop notifications, a rewards program, and newsletter automation to drive user engagement and retention.
I focus on solving real business problems and delivering measurable results.
I design scalable, maintainable, and future-proof architecture from day one.
From planning and development to deployment and optimization, I handle the full lifecycle.
I leverage AI tools and modern workflows to build faster without compromising quality.
Transparent communication, on-time delivery, and long-term relationship are my priorities.
βAbu was a pleasure to work with. He is professional, reliable, and a very hard worker. Always positive, he works well both independently and as part of a team. He consistently made himself available when needed and brought creative, out-of-the-box thinking to every project. Abu stays up to date with best practices and modern frameworks, ensuring high-quality results. I highly recommend him for full-stack development work.β
βI can't recommend Abu enough. He was a pleasure to work with from start to finish. Abu demonstrated strong technical expertise across both front-end and back-end development, delivering clean, efficient code and thoughtful solutions throughout the project. He is a very hard worker, listener and problem solver. I came to him only with an idea and he built it from scratch. Communication was clear, prompt, and professional, and he consistently met (or beat) deadlines. What really stood out was his proactive approach to solving problems and suggesting improvements that added real value. I will absolutely hire Abu again for future projects and recommend him to anyone looking for a skilled and dependable developer.β
βAbu Saleh is one of the best developers I've ever worked with on Upwork. He not only can accomplish any job presented to him, but he makes really sound judgements on how to fill in all the gaps that were previously undefined. In addition to this, he has exceptional leadership skills as he led our team of developers to complete the project at hand. We have already re-hired him for our next project. Highly recommend.β
See more of my projects, case studies and technical solutions.
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Dhaka, Bangladesh
+88 01748 966 158
srabon.php@gmail.com