Finance & Fintech
Payment systems, risk controls, reconciliation, and financial modeling discipline.
Playbook: Launch money movement safely
Double-entry ledger, reliable webhooks, and daily reconciliation live before scale.
Payments Engineering
Immutable journal entries, balanced postings, and derived balances keeping money math provable.
Idempotent handlers, signature checks, and replay safety for provider callbacks.
Three-way match between internal ledger, processor settlement, and bank statements.
Risk & Modeling
Deterministic guardrails plus scored models with human review queues tuned by loss vs friction.
Structure assumptions, flows, and outputs so anyone can trace every number.
Per-order/per-user contribution margin including hidden costs investors will find anyway.
Open Banking
Consent flows, provider fragmentation handling, and reconciliation-ready transaction ingestion.
Journey Playbooks
Double-entry ledger, reliable webhooks, and daily reconciliation live before scale.
Rules for non-negotiables, scored model, review queue, and feedback loop running.
Assumptions traceable and unit economics defensible under diligence.