Ledger Architecture
Double-entry design review and correctness verification. I ensure your ledger balances to the penny across concurrent transactions and meets audit requirements from day one.
// Service
Financial Systems Engineering
I build and review financial infrastructure where mistakes have dollar amounts attached—ledgers, payment processors, trading systems, and reconciliation engines.
Financial software is unforgiving. A floating-point rounding error that's invisible in testing becomes a reconciliation nightmare at scale. An idempotency gap that works fine under normal load causes duplicate charges when a payment gateway times out. I bring the discipline of integer arithmetic, formal correctness verification, and testing strategies built specifically for systems where auditability isn't optional—it's the whole point.
// What You Get
What this engagement covers
Payment Flow Modeling
Idempotency and failure-mode analysis for every payment path. I map out what happens when gateways time out, retries fire, and race conditions emerge under load.
Integer Arithmetic Audit
Finding and eliminating floating-point leaks across your financial calculations. One rounding error compounded across millions of transactions creates real losses.
Audit Trail Design
Regulatory-ready audit trail architecture that captures every state transition. Built so compliance reviews are straightforward, not archaeological expeditions.
// Why This Works
Why teams bring me in for financial systems engineering
01
Zero float-related incidents
Production financial systems in Erlang and Go with a perfect track record on arithmetic correctness. Integer math from the ground up.
02
Penny-perfect at scale
Ledger implementations that balance correctly across concurrent transactions, partial failures, and distributed rollbacks.
03
Audit-friendly by design
PCI-DSS adjacent experience building architectures where every financial event is traceable, immutable, and explainable to regulators.
// Work Together
Open Contact FormBuild financial systems that balance
If you're building anything where money moves and needs to be accounted for, you need someone who's done it correctly. Not just conceptually—down to the integer overflow checks and race conditions.