Affirm

Senior CIAM Software Engineer

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6 months ago
Remote, United StatesSenior
H1B sponsor

Base Salary

$169k - $240k/yr

Responsibilities

  • Design, build, and operate CIAM backend services for registration, authentication, authorization, account lifecycle, and profile management.
  • Implement OAuth 2.0, OIDC, SAML, and SCIM identity standards in production code.
  • Develop backend APIs and services in Python and Kotlin for web, mobile, and partner applications.
  • Integrate CIAM platforms with user data stores, messaging, fraud signals, and downstream customer platforms.
  • Own secure authentication and account flows including MFA, step-up authentication, device binding, consent, and adaptive authentication.
  • Automate CIAM infrastructure and deployments using Infrastructure as Code and CI/CD pipelines.
  • Monitor, debug, and optimize CIAM services for performance, resilience, and abuse detection at high scale.

Requirements

  • 5+ years of professional backend software engineering experience.
  • Strong hands-on experience designing and implementing CIAM systems and identity standards including OAuth 2.0, OIDC, SAML, and SCIM.
  • Production experience with Python or a similar backend language, with Python or Kotlin used for backend services.
  • Experience designing APIs, automation frameworks, and distributed systems.
  • Hands-on experience building and maintaining CI/CD pipelines and GitHub-based development workflows.
  • Experience with Buildkite or similar build systems.
  • Experience with cloud-native development, preferably AWS.
  • Hands-on experience extending and integrating CIAM platforms such as Okta, Auth0, Ping Identity, ForgeRock, or Azure AD B2C using custom code, hooks, and APIs.
  • Understanding of API design, data modeling, latency, error handling, observability, access control, token handling, encryption, MFA, and privacy by design.
  • Experience with Infrastructure as Code and automation tools such as Terraform.
  • Clear communication and collaboration skills across product, frontend, mobile, and security teams.
  • Familiarity with Cursor and other AI-augmented development environments.

Benefits

  • Remote-first work arrangement with most roles remote within the country of employment.
  • Affirm covers 100% of medical premiums for employees and dependents, with dental and vision coverage.
  • Flexible Spending Wallets with stipends for technology, food, lifestyle needs, and family-forming expenses.
  • Competitive vacation and holiday schedules.
  • Employee stock purchase plan with discounted shares.
  • Monthly stipends may be available for health, wellness, and technology spending.
  • Reasonable accommodations are available during the hiring process.

Tech Stack

Categories

Affirm

About Affirm

1,001-5,000 employees

Affirm provides buy now, pay later installment financing at online and in-store checkout, along with a consumer app and virtual card, for shoppers and merchants. It monetizes through merchant fees and interest on select loans, with no late fees. Founded in 2012 and headquartered in San Francisco, Affirm is a public company listed on NASDAQ that powers payments for thousands of ecommerce retailers.

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