About
Product and growth leader turned investor-operator, building and advising the next generation of AI-native and vertical SaaS companies. I’ve scaled new product lines to $75M+ ARR at ServiceTitan (TTAN) and Procore (PCOR), contributing to their growth into IPO-stage platforms. I've also led GTM strategy and advised startups across applied AI, construction tech, manufacturing, logistics, proptech, agtech, medtech, and workflow automation. I collaborate with founders and investors to accelerate product-market fit, drive go-to-market execution, and embed AI into high-leverage workflows. Currently incubating ventures focused on executive intelligence and AI system evaluation. Focus: Applied AI, vertical SaaS, GTM, workflow automation, decision support Roles: Advisor, fractional product/growth exec, investor, founder Writing: Multilogue.io
Position in the VCSift Database
- • 23 investors hold the Head of Product role in VCSift. Mark Weeks is one of them.
- • 130 investors are based in Santa Barbara, California, United States.
Data sourced from 410,343 investor profiles. Updated July 2026.
Investment Focus
- Location
- Santa Barbara, US
Contact Information
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