Modern Treasury logo
Modern Treasury

Payment operations solutions that automate the full cycle of money movement.

Software Engineer – Security

Security EngineerSecurity EngineerFull TimeRemoteSeniorTeam 51-200H1B SponsorCompany SiteLinkedIn

Location

Arizona + 23 moreAll locations: Arizona | California | Colorado | Connecticut | Florida | Hawaii | Illinois | Montana | Nevada | New Jersey | New York | North Carolina | Ohio | Oklahoma | Oregon | Massachusetts | Michigan | Minnesota | Pennsylvania | Tennessee | Texas | Utah | Washington | Wisconsin

Posted

4 days ago

Salary

$170K - $240K / year

Seniority

Senior

Job Description

Software Engineer – Security

Modern Treasury

• Lead application security across our payment platform, including secure code review, threat modeling, and security architecture for new products • Own product security for new payment rails, including FBO account structures, stablecoin integration, and enhanced compliance features • Design and implement DevSecOps tooling and automation to improve security posture across CI/CD and infrastructure • Partner with engineering teams to embed security into the development lifecycle through automation, secure design patterns, and security champions • Drive security architecture decisions for customer-facing APIs, authentication systems, and data protection controls • Build monitoring and detection capabilities for application-layer threats, API abuse, and fraud patterns • Design infrastructure monitoring, automation, and remediation practices that keep our systems resilient and trustworthy • Collaborate with Compliance and Legal to ensure product features meet regulatory requirements (BSA/AML, KYC/KYB, state money transmission) • Influence technical strategy across Product, Platform, and Infrastructure teams on security and risk management

Job Requirements

  • 6+ years in security engineering, with 3+ years focused on application and product security
  • Strong experience with:
  • Full-stack application security (frontend, backend, APIs)
  • Authentication and authorization systems and identity management
  • Infrastructure automation related to security (AWS, Docker, CI/CD pipelines)
  • Fraud detection, prevention, and abuse mitigation in payment or financial products
  • Secure SDLC practices and developer security tooling
  • Experience with incident response and security monitoring
  • Knowledge and experience with application security for Ruby on Rails, GraphQL, JavaScript, React, and containerized environments
  • Payments engineering experience, ideally including fraud prevention and risk controls in money movement systems.

Benefits

  • Offers Equity

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