Case Studies
Deep dives into systems we have designed, built, and shipped - the problem, the architecture, the security measures, and the outcome. These case studies describe our own products; every technical detail is real and verifiable.
We publish case studies only about real, shipped work. Client engagements appear here only with permission and honest, verifiable detail.
FiapPay: Escrow-as-a-Service Over WhatsApp, Built in Rust
How we built a live escrow payment platform with no traditional frontend at all - a Rust and Axum backend driven entirely through an interactive WhatsApp menu, integrated with mobile money via Campay.
Mifi Core: A Core Banking System for CEMAC Microfinance
Building a full core banking platform in Rust - double-entry append-only ledger, teller back-office, customer mobile app, mobile money integration, and offline branch nodes for rural connectivity gaps.
Fiap Systems: One Secure Platform, Eight Industry Editions
Engineering a live multi-tenant business management platform that ships as School, Hospital, Retail, Restaurant, Bakery, Hotel, and Rental editions - with strict tenant isolation, a double-entry accounting ledger, and encrypted per-tenant credentials.
EMS Dispatch & Firewatch CM: Mobile Platforms for Emergency Response
Two Flutter-based civilian emergency platforms - medical SOS reporting with agency dispatch, and community fire reporting with algorithmic incident verification - built for real-world conditions in Cameroon.
Crypto Hunter: Engineering a BIP39 Wallet Recovery Tool
A defensive recovery tool that restores access to legitimately owned crypto wallets with one or two missing or misspelled seed words - checksum-validated search, multi-chain address derivation, and strictly local processing.
What these case studies cover
Each case study follows the same honest structure: the context the system was born in, the specific technical problem, the architecture decisions and why we made them, the exact technology stack, the security measures applied, and the outcome as it stands today - including, where relevant, what has not yet been proven in production. Together they span the domains we work in most: fintech and payments (FiapPay), core banking for microfinance (Mifi Core), multi-tenant SaaS (Fiap Systems), public-safety mobile platforms (EMS Dispatch and Firewatch CM), and defensive security tooling (Crypto Hunter). If your project touches any of these, the corresponding case study is the fastest way to understand how we would approach it.
You can also explore the products behind these case studies on our products page.
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