Top Tech Startups in United States in 2027

Raizz is building a new kind of sleep wearable designed not just to track sleep, but to actively help people sleep better. Our wearable combines advanced sleep sensing, AI, and gentle closed-loop neurotechnology to understand sleep in real time and respond when needed. We’re building an integrated hardware and software experience that turns sleep data into personalized support — both during the night and throughout the day. We’re an early-stage, venture-backed team with backgrounds from Apple, Stanford, and Tsinghua, bringing together expertise across consumer hardware, software, AI, sleep science, and design. We’re preparing to launch our first product and are building the team that will take Raizz from an ambitious idea to a product used by people every night.

We create companies from zero, grow the founders who run them, and compound every launch into venture intelligence. Six people in New York. Our founder was the founding design partner who helped build Partiful, Sentropy before Discord bought it, Goldcast before Cvent, and Make before Celonis. She builds here now instead of for other people. Everything sits on our own internal operating system and the products on top of it. We make reusable systems and tooling so the next build is faster than the last. React, TypeScript, Node, Cloudflare, and a lot of MCP servers. Build the ship as it sails. Perfection is the mastery of constant iteration and we thrive in organized chaos. Excellence always, because we have a reputation for the best and the best is just the starting point. Playful seriousness, serious playfulness: effervescent in the mornings, hungry in the afternoons, roguish at night. We make identity part of the craft. The front door is not the ceiling. People come in as a designer, engineer or operator and will grow into a Lead, a Partner, a Founder, or a Venture CEO. Design and engineering sit in the same room here, because bridging those two is the whole reason Sunspell exists. Looking for entrepreneurs, designers, engineers, dreamers, & if possible, a mix of them all. But at the end of the day, if you own your project and walk in and out each day with good vibes, you're going to be a great fit. :)

We focus on frontier bets in Humanity 2.0. We participate in Pre-Seed to Series A - by writing checks up to $1M. We are founders who know the journey. We help. We've seen most of the field, and can introduce you to a network of builders, scientists, and advisors. We operate as a solo GP, so we move fast on conviction. We aim to back the first trillion dollar human enhancement company.

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