Location

Working with New York startups.

New York startups, especially in fintech, want delivery they can put a date on. A Holdfast sprint is a date, in a contract, with a refund clause behind it.

Time zone

Eastern Time (ET)

Overlap with Holdfast

Strong morning overlap, plus an overnight build window.

Fintech-grade discipline

A lot of New York startup work is fintech, and fintech is where our discipline shows: deterministic money math, append-only ledgers, no AI near the numbers. The work holds up in diligence because it was built to.

Eastern mornings, then the build window

New York and Chicago are an hour apart, so the overlap is generous. Decisions in your morning, building through your night, merged commits when you wake up.

Work

Sprints worth reading.

Fintech

100%of historical transactions reconciled

Delivered in 13 daysName redacted

Ledger reconciliation for a Series A fintech, shipped in 13 days

They told us where AI did not belong, and the money math was top of the list. The engine is deterministic and auditable. Our monthly close went from three days to an afternoon.

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B2B SaaS

0billing disputes after launch

Delivered in 9 daysLovedPDF

Stripe metered billing for LovedPDF, shipped in 9 days

They shipped billing code I did not have to double-check. The shadow cycle meant every customer saw their number before it hit a card. That is how you change pricing without losing people.

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A feature to ship in New York?

Send a one-page brief. A fixed price and a ship date back by morning, in your time zone.

Send a brief Or book a 20-minute call