Harry Siggins

Systems-focused operator who turns strategy into repeatable operating rhythms. Across five years as an early hire and Chief of Staff at Quantive (Gtmhub), Harry built customer-success and U.S. GTM operations, led leadership initiatives and offsites, and built OKR programs that prioritized co-creation, focus, and iterative learning rather than top-down bureaucracy. readoperator+1

Practical AI adoption lead: Harry helps growth teams scope and ship AI-enabled operational systems, runs workshops and courses (including a Maven course and cohort-based accelerators), and co-created Manual Override, an accelerator for independent operators. He emphasizes starting with focused workshops to map pain, running atomic pilots tied to clear metrics, creating internal ambassadors, and treating AI work like a product with measurement and iteration. onetwogrowth+5

Portfolio / fractional operator and mentor: after scaling himself out of day-to-day work at a hypergrowth startup, Harry moved into fractional Chief of Staff work, workshop facilitation, and mentoring—helping other Chiefs and leaders design operating systems, adopt OKRs meaningfully, and use AI without creating chaos. youtube+2