D Mullin is a seasoned technology executive with 15+ years building and scaling high-growth SaaS and mobile products, currently serving as CEO of TextExpander. He has repeatedly taken products from early-stage teams to nine-figure businesses—most notably helping grow TSheets from under $1M ARR to acquisition by Intuit, then leading the integrated QuickBooks Time segment. A hands-on product and engineering leader, he scaled teams from single-digit engineers to 140+ product orgs, instituted autonomous agile practices and continuous deployment, and delivered rapid iteration at scale. Known for turning “simple” product ideas into sought-after engineering careers in competitive markets, he pairs operational rigor with a curiosity-driven, mindfulness-influenced leadership style. Based in Eagle, Idaho, he blends deep systems and performance engineering roots with executive experience in M&A, integration, and org design.
15 years of coding experience
20 years of employment as a software developer
BS Computer Science, BS Computer Science at Montana State University-Bozeman
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D Mullin - Chief Executive Officer at TextExpander