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Fiserv

B2B payments and banking technology

API Security Architect

Security Engineering & ArchitectureConfirmed live in the last 24 hours
Full-time$128k - $216k

About the Job

Requirements

  • Significant experience owning API security architecture or a comparable security architecture discipline, ideally building or maturing a program from the ground up.
  • Hands-on experience configuring and tuning runtime API protection platforms such as Traceable, Salt Security, or NoName, and investigating their alerts.
  • Demonstrated experience designing API identity and access patterns, including OAuth2/OIDC, JWT, scopes/claims, and token handling.
  • A proven track record investigating and resolving API security incidents or exploitation attempts with analytical depth.
  • Strong architectural judgment and the ability to explain the reasoning behind design decisions.
  • Written and verbal communication skills, and the ability to work closely with engineering, product, and security teams.
  • A bachelor's degree in Computer Science, Information Security, or a related field, or equivalent professional experience.
  • Must currently possess valid and unrestricted U.S. work authorization; candidates with temporary visas or requiring sponsorship now or in the future are not eligible.

Responsibilities

  • Own end-to-end API security architecture, including design review, risk profiling, identity, and incident/exploitation analysis, for a high-scale financial-services API ecosystem.
  • Set technical direction for the API security program and mature the program.
  • Guide strategy for the Traceable runtime protection platform, partnering with engineers responsible for daily tuning, false positives, and blocking-mode operations.
  • Design API identity and access patterns, including OAuth2/OIDC, JWT, scopes/claims, and token handling, and close gaps such as overly broad token authorization.
  • Lead technical investigations of API security incidents and exploitation attempts, translating findings into durable architectural fixes.
  • Partner with engineers, including automation and infrastructure-as-code specialists, to translate architectural direction into secure API designs.
  • Provide architectural judgment and explain design rationale in design reviews and cross-team security decisions.

Desired Qualifications

  • Experience building automation or CI/CD integration for API security, including policy-as-code, OpenAPI-based checks, and pipelines.
  • Experience in financial services or another highly regulated industry.
  • Relevant certifications such as CISSP, CCSP, or API/security-specific credentials.
  • Experience mentoring engineers or leading cross-functional architecture reviews.
  • A background transitioning from hands-on security engineering into an architecture-level subject-matter-expert role.

About the Company

Fiserv

B2B payments and banking technology

Fiserv provides financial technology and services to banks, credit unions, merchants, and other financial firms, spanning payments, core banking, and digital networks. Its products work by licensing software, processing transactions, and delivering professional services that let clients manage accounts, merchant transactions, and digital payments through integrated systems. It stands apart as an end-to-end supplier that combines core banking, payments, merchant acquiring, and networks under one roof, enabling cross-sell opportunities and growth through acquisitions. Its goal is to help financial institutions and merchants run large-scale payments and banking operations more efficiently with a comprehensive, integrated technology stack.

Company size
10,001+
Company stage
IPO
Headquarters
Milwaukee, WI
Founded
1984

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