Diffco
ReviewCustom software, AI development, and staffing for startups and established brands.
About Diffco
Diffco is a San Jose-based software development firm founded in 2008, specializing in custom software, mobile and web applications, AI development, and IT staff augmentation. Over 17 years, the company has built products used by American Express, Starbucks, Whole Foods, and Mars, alongside a range of venture-backed startups. With a team of 50 to 249 engineers and designers, Diffco runs dedicated project teams with no cross-project resource sharing. Most client engagements fall in the $50,000 to $199,999 range, and the firm holds a Premier Verified badge on Clutch with a 5.0 rating across 31 reviews.
Who Diffco Is Best For
Diffco is a strong fit for startups moving from proof-of-concept to production-ready products, particularly those integrating AI workflows or needing a full-stack team quickly. Mid-market companies looking to modernize existing infrastructure or embed AI into current platforms also align well with their model. On the staffing side, they suit technical teams that need vetted engineers for both short and long-term contracts without the overhead of traditional recruiting.
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