Let’s talk

We are Mayfly Ventures.

We are strategists who can build and engineers who can read a balance sheet.

AI is our first language.

We like hard problems and people who care about getting them right.

Book a discovery call
An animation. Two small matrices of 0s and 1s in square brackets are multiplied and combine into one. That one is multiplied by another its own size, and they combine again. The entries of the result multiply until the matrix fills the frame, and its 1s settle into a mayfly seen from the front, slowly beating its wings. Then the values let go and the matrix factors back into the small ones it started as.

Commercial thinking/Product/Delivery

Three things that set us apart.

  1. We work out what is worth building first.

    Every engagement starts by understanding the business opportunity and testing the commercial case.

    Before the larger build begins, you should know what problem is worth solving, why it matters and what deserves investment.

  2. Strategy and build stay in one team.

    No handover between the people shaping the opportunity and the people delivering it.

    Commercial strategy, product, design and engineering stay connected from the first decision through to implementation.

  3. We stay accountable after the strategy.

    The work does not end with a recommendation or prototype.

    We stay involved as the system or product moves into the real business, so the original commercial problem remains visible through delivery and adoption.

The people behind the work

One team. Every stage.

Strategy, product, design and engineering don’t hand off between teams at Mayfly, they work together from the first conversation to the last deployment.

These are the people you work with.

PortraitGeo George

Founding Partner, Product Strategy

Geo George

Geo leads product strategy and design, translating complex operational problems into products that are well-considered, commercially grounded, and built to be used.

LinkedIn
PortraitRoselle de Kruijk

Venture Building Partner

Roselle de Kruijk

Roselle connects strategy with execution across the build and growth phases, ensuring each venture is shaped with the right commercial and operational foundations for long-term performance.

LinkedIn
PortraitMarco Santiago

Technical Partner, CTO

Marco Santiago

Marco leads technical architecture and AI engineering. He designs systems that perform reliably in real-world conditions and scale without accumulating technical debt.

LinkedIn

Our thesis

Most AI projects fail before the build begins.

Not because the technology doesn’t work.

Because the idea was never commercially validated, the scope was never stress-tested, and the team building it didn’t understand the industry it was entering.

Generic tools create incremental efficiency.

AI that transforms how an industry operates requires deep domain knowledge, disciplined commercial thinking, and engineering designed for real-world conditions.

It requires someone who understands both the problem and the product.

That’s the case for Mayfly’s model.

Not a consultant who hands you a strategy.

Not a development shop that hands you a build.

One integrated team, invested in the outcome, from the first question to the last line of code.

That’s Mayfly.

Team photographFive of the Mayfly team gathered around a laptop, working through something together

How we work

One team. No handover between strategy and delivery.

Team photographThe Mayfly Ventures team

Businesses often try to piece this work together across different specialists: someone defining the opportunity, someone designing the product and someone else building the technology.

That can mean different priorities, lost context and no single team staying close to the original business problem.

Mayfly brings commercial strategy, product, design and engineering together from day one.

Decisions stay connected.

Context stays with the team.

And the people helping determine what should be built remain involved as it becomes real.

You bring the knowledge of the business.

We bring the commercial, product and technical capability to build from it.

FAQ

What people ask about Mayfly.

Is Mayfly Ventures a consultancy or an agency?

Neither in the usual sense. The work starts like a consultancy, by working out where AI would make a commercial difference and what is worth pursuing, and continues like a product team, by designing and building the result with the same people. The strategy and the system come from one team.

Who is behind Mayfly Ventures?

Three partners: Geo George, Founding Partner for product strategy; Roselle de Kruijk, Venture Building Partner; and Marco Santiago, Technical Partner and CTO. Each stays involved from the first conversation through delivery.

Where is Mayfly Ventures based?

In Collingwood, Melbourne, at Level 4, 54 Wellington Street. We work with businesses across Australia, in person in Melbourne and remotely elsewhere.

Which businesses have you worked with?

Recent work includes DGC in dangerous goods logistics, Virtuosa in clinical reporting for psychologists and Handover+ in residential construction, alongside products built for a wider market. The Portfolio page has each one with what changed.

How does an engagement start?

With a free 30 minute call, then a two-week first stage that ranks the opportunities and builds an initial commercial case. Design and build only start once that case is clear. The Process page explains each stage and how long it takes.

Start here

Can you see an opportunity to scale your business? Let’s figure out together how we can build it.

Bring the knowledge of your business. We’ll bring the commercial, product and technical thinking to work out what deserves a closer look.

Book a discovery call

Free 30 minute call · Melbourne, Australia

An animation. A field of flat tiles is scanned from back to front. Most fade; the ones that are kept lift off the field and stack, block by block, into a structure labelled “worth building”. Then it resets and a different structure is built.