Patrick Lef is a founder and product leader with 17 years of experience building AI-infused consumer and B2B products, currently scaling QA.tech to deliver the world's first autonomous QA engineer for web apps. He has a strong track record leading product and technology teams—formerly Head of Product at memmo.me and CTO at Collabs, a startup acquired for ~54.5M SEK—and has repeatedly shipped growth-stage platforms used by millions. His background blends hands-on engineering, AI-driven automation, and marketplace experience, from video apps with 500k users to AI moderation and lead-generation platforms. Based in Stockholm, he brings a pragmatic founder’s mindset to product-first engineering and an uncanny knack for automating manual workflows end-to-end.
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