Senior Software Engineer

💼 Full-time💰 $200,700–$200,700🗓 2026-07-18 → 2026-09-26

Core

Building seamless connections between Mercury's modern engineering systems and enterprise core banking systems and payment networks.

Role type

Senior Software Engineer (Banking Integration Platform)

Builds

Integration subsystems connecting modern distributed software with legacy bank core infrastructure

Domain

Fintech / Banking Infrastructure

Deliverable

production ML models | product features | infrastructure

Required skills

backend infrastructure, distributed systems, enterprise integrations, legacy system integration, banking domain knowledge (accounts/ledgers), API design, monitoring and recovery, technical leadership

Preferred skills

Haskell, building new systems from scratch, product-minded engineering

Technologies

Haskell

Responsibilities

Build integration with FFIEC-approved bank core and payment networks; Design internal APIs for product teams; Handle enterprise integration challenges (retries, failures, format mismatches); Build data pipelines for system sync; Own monitoring, alerting, and recovery for critical connections; Partner with teams to define reliable contracts; Shape technical architecture of Mercury Bank

Seniority

Senior, hands-on IC and technical leader

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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.