D Mullin is a seasoned technology executive and CEO who currently leads TextExpander, guiding the company to centralize organizational knowledge and enable instant access for teams and consistent customer communications. At TSheets, which was later acquired by Intuit, he helped drive growth from under $1M ARR to nine figures, expanding the team from 20 to 400+, and increasing paying customers from 2k to over 100k and users from 30k to 1.8M. He led the integration and ongoing leadership of the QuickBooks Time segment post-acquisition, and built a 140-person product and engineering organization with 20 autonomous agile sprint teams and a cadence of roughly 20 micro deployments daily. His leadership spans roles at Summit Partners, Intuit, SAP, Sybase, and other firms, reflecting a consistent record of turning ambitious product ideas into scalable software platforms. He is a curious lifelong learner who champions mindfulness and a culture of continuous growth.
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