Self funded.
Built for the long term.
Focused on what parking needs.
About Turnstone
Turnstone began in 2019 as an internal project between IDAX Data Solutions and the Seattle Department of Transportation. It spun out as an independent company in 2021, and now serves cities including Seattle, Denver, Santa Rosa, and Berkeley.
We built Turnstone because curb space is one of the most contested public resources a city manages, and the tools to manage it well have lagged far behind the problem. We've stayed self-funded and independent, focused on what each parking program actually needs, not on investor metrics.
The team

Cole Jaillet
CEO
SaaS product leader across parking, IoT, and FinTech, with 13 years of experience. Previously VP of Product at Passport, working with 800+ municipalities. Leads vision, product, and GTM at Turnstone.

Jeremy Debate
CTO
Software engineer with 15 years scaling AI/ML and full-stack architecture. Previously CTO at Anthro AI and R&D leader at MassMutual. Leads engineering and technical direction at Turnstone.

Scott Lee
Co-Founder
Transportation planner and data analyst with 20 years in the field. Founded and sold IDAX Data Solutions in 2025, where Turnstone was first conceived. Advises on financial and strategic direction.

James Barr
Co-Founder
Software R&D leader with 16 years across the field, including a decade in transportation and data analytics. Currently CEO of Strata Research. Advises on security and technical direction.
Interested in what we're doing?
We're not actively hiring right now, but we're always open to meeting great people. If you think there's a fit, we'd love to hear from you.
Contact us