Affirm

Affirm offers a transparent buy now, pay later service founded in 2012 by Max Levchin. No late fees or surprises, just a responsible way to pay over time for your favorite brands.

Diversified Financial Services

Financials

1K-5K (2552)

Founded 2012

19 open positions

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Senior CIAM Software Engineer

1 day, 8 hours ago

United States

Full-time

Senior

Backend Engineer

Software Development

AWS Buildkite CI/CD Encryption GitHub Kotlin OpenID Connect Python SAML Terraform

Apply Now

Affirm

Affirm offers a transparent buy now, pay later service founded in 2012 by Max Levchin. No late fees or surprises, just a responsible way to pay over time for your favorite brands.

Diversified Financial Services

1K-5K

Founded 2012

View All Jobs 19

Description

Design, build, and operate core CIAM backend services for registration, authentication, authorization, account lifecycle, and profile management.
Implement and extend identity standards such as OAuth 2.0, OIDC, SAML, and SCIM with correct and scalable integrations.
Develop backend APIs and services in Python and Kotlin for web, mobile, and partner applications.
Integrate CIAM platforms with internal systems such as user data stores, messaging, fraud signals, and downstream customer platforms.
Own secure authentication and account flows end to end, including MFA, step-up authentication, device binding, consent, and adaptive authentication logic.
Automate CIAM infrastructure and deployments using Infrastructure as Code and CI/CD pipelines.
Monitor, debug, and optimize CIAM services for performance, resilience, abuse detection, and operational reliability.
Collaborate closely with partner engineering, product, frontend, mobile, and security teams to deliver identity features.

Requirements

5+ years of professional backend software engineering experience.
Strong experience designing and implementing CIAM systems.
Deep, hands-on knowledge of OAuth 2.0, OIDC, SAML, and SCIM beyond basic configuration.
Strong production experience in Python or a similar backend language.
Experience designing APIs, automation frameworks, and distributed systems.
Hands-on experience building and maintaining CI/CD pipelines.
Experience with GitHub-based development workflows and 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.
Solid understanding of backend fundamentals including API design, data modeling, latency, error handling, and observability.
Experience with Infrastructure as Code and automation tools such as Terraform.
Strong security fundamentals applied through engineering, including access control models, token handling, encryption, MFA, and privacy by design.
Clear communication skills and ability to work across product, frontend, mobile, and security teams.
Familiarity with tools such as Cursor and other AI-augmented development environments.

Benefits

Remote-first work environment with the ability to work almost anywhere within the country of employment.
Base salary range of $190,000–$240,000 for CA, WA, NY, NJ, and CT, or $169,000–$219,000 for other U.S. states.
Equity rewards as part of total compensation.
Monthly stipends for health, wellness, and tech spending.
100% subsidized medical coverage for you and your dependents.
Dental and vision coverage for you and your dependents.
Competitive vacation and holiday schedules.
Employee stock purchase plan with a discount on Affirm shares.

Interested in this position?

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