Senior Software Engineer – Banking Integration Platform

Mercury

Senior Software Engineer building integrations for Mercury's Banking Integration Platform team. Focused on connections with core banking systems and payment networks.

Posted 7/17/2026full-timeRemote • California, New York, Oregon • 🇺🇸 United StatesSenior💰 $200,700 - $250,900 per yearWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in building and operating backend infrastructure and distributed systems, with a strong focus on integrating modern software with legacy banking systems. Proficient in designing APIs and managing enterprise integrations while ensuring reliability and maintainability.

Highest-signal resume keywords

Backend Infrastructure DevelopmentDistributed Systems EngineeringAPI Design and IntegrationHaskell ProgrammingBanking Systems Knowledge

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Software EngineeringEnterprise IntegrationData Pipeline DevelopmentMonitoring and AlertingSystem RecoveryLegacy System IntegrationDistributed Software SystemsTechnical Architecture DesignData ModelingAPI Development

Soft Skills

Product MindedProblem SolvingCollaboration

Industry Keywords

FFIEC ComplianceBank Core IntegrationPayment NetworksAccountsTransactionsLedgersRegulated Environment

Tech Stack

Tools & technologies

Distributed SystemsHaskell

About the role

Key responsibilities & impact

Build Mercury’s integration with an FFIEC-approved bank core and 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 teams at Mercury to define clean boundaries and reliable contracts.
Help shape the technical architecture of Mercury Bank.

Requirements

What you’ll need

7+ years of professional software engineering experience building and operating backend infrastructure and distributed systems at scale.
Experience integrating modern distributed software systems with older, legacy infrastructure, preferably in a highly-regulated environment.
Understanding of how banks and banking systems work: accounts, transactions, ledgers, and the data models underneath.
Product-minded engineer who thinks about the developers consuming your APIs.
Thrives in environments where you're building something new rather than maintaining something established.
Comfortable with Haskell or ready to learn.
Strong and justified opinions about building reliable, maintainable systems.

Benefits

Comp & perks

base salary
equity (stock options)