Smarter Web & App Development.
No Fluff, Just Results since 2008.
We’ve been helping businesses build fast, functional, and future-ready websites, apps, and AI tools. No jargon, no overpromises — just digital solutions that work.
Calvin Seng Co is a full-stack development company based in Singapore, specialising in web design, cross-platform app development, SEO, generative AI, and professional photography. We work with startups, SMEs, and corporates to launch, grow, and automate with smart, scalable technology.
From SEO-optimized websites and custom mobile apps to AI-powered workflows and corporate photography, our in-house team delivers work that’s both strategic and execution-ready — all without the agency fluff.
Powering the world’s best companies
Trusted Reviews
Trusted by businesses of all sizes, our clients love the results — from faster websites and smarter apps to improved SEO rankings and impactful photography that elevates their brand presence.