Senior Software Engineer - Banking Integration Platform

Mercury is a fintech company that is building a bank and is seeking a Senior Software Engineer for their Banking Integration Platform. In this role, you will be responsible for creating integrations with banking systems, designing internal APIs, and managing data pipelines to ensure seamless operation across the company's systems.

Responsibilities:

• Build Mercury’s integration with a 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 keep Mercury's systems in sync with our bank core
• Own monitoring, alerting, and recovery for our most critical external connections
• Partner with many other teams at Mercury to define clean boundaries and reliable contracts
• Help shape the technical architecture of Mercury Bank

Requirements:

• Have direct experience with either a bank core that has achieved FFIEC-compliance (such as FIS) or that of a US-based Global Systemically Important Bank (G-SIB)
• 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