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FineStack

FineStack landing page: on-chain money, taught the way payments people learn

An interactive Ethereum and stablecoin learning platform for payments professionals, combining financial-services expertise with hands-on product development.

FineStack teaches stablecoins and on-chain settlement to payments professionals: treasury, product, compliance and operations teams rather than developers.

Each lesson pairs a short reading with a hands-on task. In the simulator, learners set up a transfer, broadcast it to a sandbox chain and watch confirmations and finality land against a treasury policy. Quizzes, module tests and a certificate record progress.

It is in beta: the first module, Blockchain for payments, is live; five more (stablecoin mechanics, settlement and treasury, compliance, a cross-border case study) are in development. Built by Vacaloca Labs.

FineStack lesson simulator: a sandbox USDC transfer settling after two confirmations (illustrative)
FineStack course syllabus: Stablecoin Payments Practitioner, module 1
Software architecture & development by Piotr Maciejewski · Vacaloca Labs
vacalocalabs.com

Let's build something.

I co-founded Vacaloca Labs, a boutique studio building web, data and AI products. Working with my co-founder across strategy and design, I lead software architecture and hands-on technical delivery, from product definition through implementation and deployment.

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