Senior Software Engineer - Banking Integration Platform

Engineer

Senior Software Engineer – Banking Integration Platform

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  • Date posted
    June 12, 2026
  • Expiration date
    September 12, 2026
  • Application ends
    September 12, 2026

Our Client Currently looking for Senior Software Engineer – Banking Integration Platform

 

In this role, you will:

  • BuildĀ  integration with bank core and the connections to payment networks.
  • Design internal APIs that give product teams simple, consistent interfaces to complex external systems.
  • Handle the messy realities of enterprise integrations such as retries, failures, format mismatches, and downtime.
  • Build data pipelines that keepĀ  systems in sync with our bank core.
  • Own monitoring, alerting, and recovery for our most critical external connections.
  • Partner with many other teamsĀ  Ā to define clean boundaries and reliable contracts.
  • Help shape the technical architecture of Mercury Bank*.

You should:

  • Have direct experience with either a bank core that has achieved Ā (such as FIS)
  • Understand how core banking systems work: accounts, transactions, ledgers, and the data models underneath.
  • Be a product-minded engineer who thinks about the developers consuming your APIs, not just the systems you’re connecting to.
  • Thrive in environments where you’re building something new rather than maintaining something established.
  • Be comfortable with our tech stack (Haskell and TypeScript) or ready to learn.
  • Have strong opinions about building reliable, maintainable systems.
  • Are you interested in this position?

     

    Apply by clicking on the ā€œApply Nowā€ button below!

     

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