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LimestoneHQ began posting AI engineering tips, news, and workflows on Instagram…

Brief

LimestoneHQ announced on 2026-06-25 that it started posting AI engineering tips, news, and workflows on Instagram. Mark Ajzenstadt argues PE firms' main bottleneck is hiring — 43% of portfolios haven’t put AI in production — because engineers with HIPAA/KYC/compliance domain knowledge are rare, stalling value-creation roadmaps; he offers his 10 years’ help via DM.

Why it matters

LimestoneHQ began posting AI engineering tips, news, and workflows on Instagram (instagram.com/limestone.digi…), announced 2026-06-25.

Key details

  • Mark Ajzenstadt (@mardehaym) says PE firms have a hiring problem, not an engineering problem: 43% of portfolios haven't deployed AI in production, operating partners’ 100-day plans can stretch into year seven, and engineers with HIPAA, KYC, and compliance workflow expertise are scarce.
  • Ajzenstadt proposes hiring engineers who learn the business (know why EMR fields matter for reimbursement and why downstream KYC checks fail); he cites 10 years' experience and invites DMs to help staff portfolios.
Source evidence

We started posting AI engineering tips, news, & workflows on @instagram

Follow us @ instagram.com/limestone.digi…

Mark Ajzenstadt (@mardehaym)

PE firms don't have an engineering problem. They have a hiring problem money can't fix.

Most execs don't last to exit. The right engineers are even rarer. Try searching for people who actually understand HIPAA, KYC, and compliance workflows.

Good luck.

Every operating partner wants the same thing: ship the value-creation roadmap before the exit window slams shut.

But that roadmap depends on a hire who barely exists.

Most portfolios are stuck. 43% haven't deployed AI in production at all. The operating partner is back at square one. AI pilots stall. Compliance risk piles up. The legacy stack keeps eating margin.

The 100-day plan drags into year seven.

I've seen it at every portco. The recruiter scrambles. They settle for a generalist dev shop. The shop ships features, but misses the regulated workflow.

CTO ends up playing translator, stuck in the middle. Three months in, they're actually further behind.

The cost of ignoring compliance expertise isn't just fines, it's years of lost value creation. Most PE firms see the same pattern: ship fast, miss compliance, pay later. I only work with teams who get this.

Here's the fix: engineers who learn the business. People who know why that field in the EMR matters for reimbursement. Why a downstream KYC check fails.

I've spent ten years on this.

If your portfolio has a roadmap collecting dust because you can't staff it, DM me.

— https://nitter.net/mardehaym/status/2070235033961705915#m