Senior Software Engineer - Cards

Any Office or RemoteFull-time$167k–$208k2026-10-23 → 2026-11-10

Core

Design and build reliable, full-stack systems for Mercury's debit and IO cards, handling issuance, authorization, money movement, and settlement.

Role type

Senior Software Engineer (Full-Stack)

Builds

Mercury Debit and IO cards (issuance, lifecycle, authorization, settlement)

Domain

Fintech / Payments

Required skills

Full-stack development, Systems architecture, Product mindset, Mentoring, Observability, Financial correctness

Preferred skills

Fintech, Payments, Card issuing

Technologies

Haskell, TypeScript

Responsibilities

Lead projects from idea to launch, Build features across the stack, Mentor other engineers, Work with cross-functional teams

Seniority

Senior, hands-on IC

About Mercury

Mercury is on a mission to defy those expectations. We're a financial technology company that helps startups spend less time banking* and more time building. We believe that the key to our success revolves around thoughtful design — and we hold the craft of that design to an exceptionally high standard. We're looking for a Staff Brand Designer who sets that bar: someone whose eye is so precise, and whose execution is so considered, that the work around them gets better just by virtue of their presence.