Will Dennis
I’m a former VP of Product and two-time startup founder with a background in building joyful, engaging consumer products — from social platforms to health tools.
I'm currently building LLM-centered products focused on the future of work and human connection.
I value simplicity, creativity, in-person collaboration, design, and craft - which is why the black text on this site actually contains a hint of green (#001301) to make things feel more cohesive.
I do my best work when I can blend product leadership with creativity, storytelling, and technology to create new experiences people can't live without.
Current Projects
Waterfall
Whomst
See my working LLM thesis and related projects →
Previous Product & Engineering Work
- Fractal AI Accelerator - Summer 2025 (building agents, semantic search)
- VP of Product at WeightWatchers ($1 billion revenue digital product line)
- Product Manager at WhatsApp (2 billion user product surface)
- Head of Product at HouseParty (acquired by Epic Games)
- Product and UX consultant (Peloton, Stash, Human Ventures)
- CEO and cofounder of two seed-funded start ups (failed but learned :))
Previous Writing & Storytelling Work
- Co-Creator "Other People" TV Series (sold to FX Network)
- Writer & Director of Multiple Short Films (3 Vimeo Staff Picks)
- Writer & Director "Vanilla" (Award-Winning Feature Film)
- Occasional youtuber (250k+ views)
- Sometimes tech writer (blog posts below)
Get in touch
Feel free to reach out if you think I could be helpful or just to say hello. williamldennis@gmail.com