Infrastructure Engineer

Location: San Francisco, CA or Phoenix, AZ (In-Office) Role Infrastructure Engineer Responsibilities Design a money movement flow: ledgered internal state, transaction lifecycle management, idempotency, retries, and deterministic replay so we can reason about every flow Build high‑trust, reliable reconciliation: daily/continuous reconciliation between internal ledger, card network events, banking events, and vendor/provider reports — and the tooling to investigate mismatches fast Minimize operational risk: build guardrails that prevent bad states (double‑spend, duplicate webhook processing, inconsistent balances, orphaned settlements) Payment Systems Architecture: Own and evolve a multi‑service monorepo spanning an event‑driven pipeline, a payments API (onboarding, credit, cards), balance healthchecks, and regulatory reporting jobs. Make architecture‑level decisions on how to securely and reliably handle billions of dollars in state‑funded educational payments, including card issuing infrastructure, processor integrations, and fraud and credit risk controls Ledger Integrity Reconciliation: Be responsible for keeping independent ledgers aligned at all times despite asynchronous event processing. Build and improve automated healthcheck and reconciliation systems that catch discrepancies the moment they appear Qualifications Obsessive About Correctness: You know that a missing cent compounds into a crisis. Retries don't erase history, idempotency is deliberate, and validation belongs where truth lives — the database Assumes the Real World is Unreliable: Banks go down, queues back up, vendors change APIs without warning. You build systems that stay predictable anyway Craves Ownership: You want to be the single person everyone trusts when money is moving. You're not looking to contribute to a system — you want to have engineered it so that emergencies are rare and recoverable when they happen High‑Auditability Mindset: You're willing to go deep on a single missing transaction and trace it through every layer of the stack. You build tooling that lets you and your team investigate mismatches fast Able to work in‑person with the team in San Francisco, CA or Phoenix, AZ (visa support available) Experience with Lithic, Column, LoanPro, Stripe Issuing, or comparable card and banking infrastructure is a strong plus Benefits Generous Founding Equity Top‑Tier Backing Relocation Support Comprehensive Visa Sponsorship Unmatched Impact #J-18808-Ljbffr