04 · Service

Rapid Prototyping.

Concept to clickable in days.

10-day sprints to validate an idea or pitch an investor. Working prototype, real data, deployed — not a Figma file.

Schedule an intro See client work
What you get

Capabilities, not buzzwords.

10-day concept sprints
Pick the riskiest assumption, build it, put it in front of users. No PM theater.
Deployable, not just clickable
Real URL, real backend, real data. The thing actually works on someone's phone.
AI-assisted UX iteration
v0, Cursor, Codex in the loop. Faster iteration without sacrificing taste.
Investor-demo polish
Motion, copy, narrative. The 10-minute walkthrough that doesn't need apologies.
User testing setup
Recruit, schedule, run, synthesize. Five users in a week beats a quarter of guessing.
Path to V1
If it lands, the prototype isn't thrown away — it becomes the seed of production.
When to engage

Best fit if you're…

  • +Founders validating an idea before hiring
  • +Enterprises de-risking a bet before committing budget
  • +Hackathon- or launch-week-mode product teams
How it works

Process.

  1. Day 0Kickoff: pick the one question worth answering.
  2. Days 1–8Build. Daily check-ins, deploy by end of week one.
  3. Day 9–10Demo, test, decide. Keep going, kill it, or hand it off.
Selected work

Where this showed up.

YaplessStack0MAST Agents
Next service · 01
Full-Stack Engineering

Modern stacks shipped without the meetings. From API to UI, design system to deploy pipeline — built by senior engineers who don't need a six-week ramp.

Let's build
something
remarkable.

I'm open to a small number of new engagements this quarter. Founders, operators, and product teams — bring me your hardest problem.

Book a Discovery Call eric@campbell.ventures