Knowledge Hub

Engineering Insights

What we've learned building real products — from event-sourced banking to mobile crypto wallets. No theory without practice.

How event sourcing and CQRS power a 48-module open-source banking platform. Decisions, trade-offs, and lessons from 6,500+ tests.

Building a WEEE-compliant B2B marketplace for end-of-life solar panels. Event sourcing, competitive bidding, blockchain certificates.

A 2-of-3 Shamir threshold in React Native: device shard in Secure Enclave, auth shard on HSM, cloud recovery. How we protect private keys.

From RAILGUN-inspired shielded transactions to Proof of Innocence for sanctions compliance. How we built ZK privacy into a production wallet.

48 bounded contexts, single-action classes, and event sourcing in production. A practical guide to DDD patterns in a Laravel codebase.

How the EU Prospectus Regulation 150-person exemption shaped our architecture — investor classification, access control, and Letters of Intent.

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