A studio built around senior ownership of the work.

Mangosteen Fintech is small on purpose. The person you meet in the first call is the person who does the work.

Michael Stanat, Founder

Mangosteen Fintech was founded by Michael Stanat to help fintech teams close the gap between insight and execution.

The firm works across product, commercialization, partnerships, international expansion, ecosystem development, and AI-enabled operations.

The gap is rarely technology. It is the distance between what a product can do and what a specific buyer will pay to replace.

A specific commercial decision is blocked and needs someone senior to own it to a conclusion.
The product works and the commercial story does not hold in a room yet.
Product, GTM, or operating capacity is needed for a defined period rather than a permanent hire.

The need is engineering delivery, licensed infrastructure, or regulated operations.
The need is a permanent full-time executive, which is a hire rather than an engagement.
The need is a report. Every engagement here ends in a decision and a plan.

The work itself is grouped into three practices across seven services. See all services.

Direct contact

Messages reach the founder directly. There is no intake team.

Operating principles

The name is a name. What follows is the part that changes how the work feels.

01
Commercial clarity before activity
Decide who the product is for and why they buy before spending a quarter of runway proving it the expensive way.
02
Global context, local specificity
Payment behavior, distribution, and partner economics differ by market. A plan that ignores that difference is a plan for one market.
03
Senior ownership of the work
The person in the discovery call is the person doing the work. No handoff to a junior team after the engagement starts.
04
Useful artifacts over presentation theater
A roadmap your team runs on is worth more than a deck your team admires once.
05
Human judgment built into AI-enabled workflows
Automation earns scope by proving it. Approval gates, evaluation criteria, and audit trails come first, not last.

Next step

Describe what you are trying to launch, enter, or scale. If it is not a fit, you will get a direct answer and, where possible, a better direction.

Or write directly to