Hi! I'm Will Harris (ex-OpenSea, ex-LinkedIn). I help startups make the jump from "it works" to "it scales."

Who this is for

You've got something real (paying users, real load, real expectations), but the engineering can't keep up with the traction. That usually looks like one of two things:

You vibe-coded your way to traction. AI tooling got you to a working product and real users, but the last 20% (reliability, scale, the integration sharp edges the model can't one-shot) is eating your weeks and your runway.

Your team shipped fast to find PMF, and now it's buckling. The architecture that was perfect for finding product-market fit is cracking under the load that came with it. And the senior hire you'd need to fix it is a quarter away. You don't have a quarter.

Either way, you need senior hands now, not a job req.

What you get

  • A second pair of senior eyes on the architecture, with concrete fixes. Not consultant theater.
  • Hands-on engineering on the parts most likely to break next: data, scaling, integrations, the unsexy plumbing.
  • Mentorship for whoever's building it (you or your team) so it keeps holding up after I leave.

Why me

14 years shipping production software at scale, from scrappy startups like early OpenSea to 300MM+-user systems at LinkedIn to BCGX. I've seen what breaks at every order of magnitude and know what's worth fixing now vs. later. More background on /about.

How we start

A short call to figure out whether I can actually help. If yes, a scoped engagement; if no, I'll point you at someone who can.