Fractional CTO · AI Systems & Software

I help businesses and entrepreneurs build systems and software with AI.

I work out where AI actually fits, then build it and keep it running. I've spent twenty-five years building products from zero to one as a founding engineer, first technical hire and fractional CTO.

Founders · Small businesses · Fintech · Marketplaces · AI products

25 yrs
Building SaaS from zero to one
23,000+
Users on a platform I built as founding engineer
$54M+
Transactions facilitated by that product
$16.4M
Venture funding my work has supported

The gap I close

AI gets you to a demo. The last 20% is where it breaks.

Today's tools make a working prototype easy. They don't make it secure or reliable at scale once real users and real money arrive. That's where projects fail, and it's the part I've spent decades doing.

Security

What the demo hides

AI-generated code often ships with serious security holes. I find them before your users or an attacker do.

Scale & cost

What breaks at 1,000 users

Data models, race conditions and architecture choices that work in a demo get expensive later. I catch them while they're cheap to fix.

Judgment

What to build, what to skip

Often the best call is deciding what not to build. I bring senior product and technical judgment so you spend your runway on what matters.

How we work together

Three ways in. Start wherever you are.

Most founders start with a readiness check to get the lay of the land, then move into a build or an ongoing partnership. No long contracts, and the scope and price are clear up front.

Start here

Launch Readiness Check

For founders who've built with AI or no-code and want a quick, honest read before real users arrive.

  • A focused, high-level look at your code and setup
  • Top risks across security, data and scale, ranked
  • A short written summary: what's solid, what's risky, what to do next
  • Plain-language walkthrough call
Fixed fee · $500 USD
Book a readiness check
Build

Build

A product, an internal system or an automation, built properly the first time so it's secure and ready to grow.

  • Fixed scope, priced up front
  • Clean, multi-tenant architecture from day one
  • Built to hand off, not to lock you in
  • The same approach behind a 6-week fintech MVP
Fixed scope · quoted per build
Scope a build
Partner

Fractional CTO

The senior technical partner you bring in before you hire a CTO. You get experienced judgment when you need it, without the cost of a full-time hire.

  • Ongoing product & technical direction
  • Architecture, hiring, and roadmap decisions
  • A steady hand as you scale past the MVP
  • Light monthly cadence, shaped around you
Monthly · by arrangement
Talk it through

Selected work

Products I've taken from nothing to real.

Founding Engineer · Wethos

Fintech for freelancers

23,000+ users$54M+ in transactions · team grown 2 → 10

Built the fintech MVP in six weeks, then scaled the platform and the engineering team behind it. The work supported $16.4M in venture funding.

First Technical Hire · Jasper PIM

eCommerce data platform

Public listingSolo-built platform · $6M raised

Built the entire initial product myself as the first technical hire: a multi-tenant platform for complex product data. The company went on to a TSXV public listing.

Technical Co-Founder · Simplified.Travel

AI travel platform

20+ languagesCustom RAG · white-label · multi-tenant

Built a white-label, AI-powered itinerary platform for travel operators as technical co-founder, and now guide its technical direction as fractional CTO.

Founder · Call Sidekick

AI phone agent for trades

My own productDesigned, built & run by me · voice AI

Answers the calls a small business misses, has a real conversation with the caller and sends the owner a summary. Starting with radon mitigation companies. callsidekick.app

What people say

Kind words from people I've built with.

Jeremy is preternaturally gifted at what he does, which is to synthesize business requirements and implement them in an active system, in real time. It's spooky, and it's a massive business advantage.

Al H., Product Manager

I can always count on you to come up with a clever solution to a challenge. You're able to quickly draw on your knowledge and propose solutions that aren't obvious to others.

Challen H.

A swiss-army knife. Seems to always be a valuable contributor, no matter what the initiative is.

Zachary P.

Jeremy sees company change in multiple lenses, he separates changes based on transformational and incremental with consideration to available resources, timing, and setting up teams for success as we scale.

Clara Z.

About

I work at the seam between product and engineering.

For 25 years I've built SaaS products from the ground up as a founding engineer, a first technical hire and a technical co-founder. I've built the thing, scaled it, and been the one on the hook when real users depend on it.

I can set product direction and write the code that delivers it: 25 years of PHP, the last decade and more in Laravel, plus multi-tenant architecture, real-time systems and AI/RAG. Founders bring me in when the hard problems sit between what they want the product to do and what the technology can support, and I tell them the truth about both.

Start a conversation

Tell me what you're building.

Whether you're stuck on something half-built or deciding what to build at all, a short call will tell us both whether I can help. No pitch, just a straight read on where you stand.