About us
Phase One Ventures is an AI-native venture studio. We start companies from scratch, build them with small teams, and move fast enough that the first version of a product is usually in front of real users within weeks.
The role
You will own product design end to end for products that do not exist yet. That means starting with user interviews and a fuzzy problem, and finishing with flows, prototypes, and specs that engineering can ship.
You will work directly with founders and engineers, usually on more than one product at a time. There is no established playbook to inherit for these products. You will be the person defining what gets built and why.
What you'll do
Define the product. Information architecture, user flows, state coverage, edge cases, and the unglamorous parts most people skip.
Run discovery. Conduct user interviews, sit in on customer calls, and synthesize raw conversation into problem statements the team can act on.
Prototype fast. Use Figma and Claude Design to get from idea to something clickable in days, not weeks.
Validate.



Put prototypes in front of real users, run structured feedback loops, and kill the ideas that do not hold up.
Partner with engineering. Write clear specs, cover empty, loading, and error states, and stay involved through implementation.
Build the feedback habit. Maintain an ongoing research pipeline instead of running one-off studies when someone asks.
Collaborate with our visual designers, who own look and feel and the design system, so the surface stays consistent while you focus on product logic.
What we're looking for
4+ years designing digital products, including at least one you took from nothing to launch.
Strong Figma fundamentals: components, auto layout, variables, and interactive prototyping.
Hands-on experience with Claude Design or comparable AI design tools for generating and iterating on interfaces.
Real user research experience. You have run the interviews yourself, not just read the summaries.
Comfort w

📌 Product Designer (Guadalajara)
🏢 Phase One Ventures
📍 Guadalajara