Senior Engineer - Money Movement
New York City, NY$220k - $300kFull-timePosted 2mo ago
About the role
Senior Software Engineer focused on building and hardening Santé's payroll, banking, and money movement systems with emphasis on financial correctness, auditing, and reliable transactional behavior.
Responsibilities
- Build Santé's payroll product from the ground up — earnings computed from shift data the platform already has, tax withholding, payment execution, and filings integrations
- Develop Santé’s bill pay product that moves our customers from paying their suppliers by check to one-click handling accounts payable directly in our platform
- Embed bank accounts directly into our OS so that our customers have access to their card processing revenues in minutes
- Own and harden our accounting integrations (QuickBooks today), where a sync bug shows up as a merchant's books not balancing at month-end
- Design and maintain the ledgers behind loyalty, gift cards, and deposits — correct, idempotent, and auditable under concurrent writes
- Establish the financial-correctness patterns (double-entry ledgers, idempotency keys, reconciliation jobs, timezone cutoffs) that other teams adopt
- Multiply your output with AI agents: direct, review, and productionize agent-written code as a core part of your workflow — with the guardrails money-touching code demands
Qualifications
- 5+ years building production backend systems, ideally in TypeScript/Node — though any language with correct, reviewable code is acceptable
- Practical fluency with transactional guarantees: idempotency, atomicity, retry semantics, webhook handling
- Real depth in PostgreSQL: schema design, concurrency, performant ledger queries
- An instinct for the unglamorous parts of money — reconciliation, rounding, tax rates with three decimals
- Bias for root cause analysis and eliminating bug classes
- Comfort operating with high ownership in a small team where decisions set standards
Skills
Required:Backend developmentTypeScript/Node.jsPostgreSQLTransactional guarantees
Benefits
- Fully company-covered medical and dental benefits
- 401(k)
- Catered Lunches and Dinners: Santé provides dinner each evening and lunch weekly
Last updated Oct 21, 2026. Interested? Apply on the company site.
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