[Remote] Senior CIAM Software Engineer

Note: The job is a remote job and is open to candidates in USA. Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. This role is a hands-on engineering position inside Information Security, focused on designing and shipping core CIAM capabilities that protect customers and support growth.ResponsibilitiesDesign, build, and operate core CIAM backend services that support customer registration, authentication, authorization, account lifecycle, and profile management for B2C and B2B platformsImplement and extend identity standards such as OAuth 2.0, OIDC, SAML, and SCIM in code, ensuring correctness, scalability, and clean integration patternsDevelop backend APIs and services in Python and Kotlin that expose identity capabilities to web, mobile, and partner applicationsIntegrate CIAM platforms with internal systems, including user data stores, messaging, fraud signals, and downstream customer platformsOwn secure authentication and account flows end to end, including MFA, step-up authentication, device binding, consent, and adaptive authentication logicAutomate CIAM infrastructure and deployments using Infrastructure as Code and CI/CD pipelines, treating identity as a core platform serviceMonitor, debug, and optimize CIAM services for performance, resilience, and abuse detection in high-scale environmentsSkillsStrong experience designing and implementing CIAM systems, with deep, hands-on knowledge of OAuth 2.0, OIDC, SAML, and SCIM beyond basic configuration5+ years of professional backend software engineering experienceStrong production experience in Python or a similar backend languageExperience designing APIs, automation frameworks, and distributed systemsHands-on experience building and maintaining CI/CD pipelinesExperience with GitHub-based development workflows and Buildkite or similar build systemsExperience with cloud-native development, preferably AWSHands-on experience extending and integrating CIAM platforms such as Okta, Auth0, Ping Identity, ForgeRock, or Azure AD B2C using custom code, hooks, and APIsSolid understanding of backend and distributed systems fundamentals, including API design, data modeling, latency, error handling, and observabilityExperience with Infrastructure as Code and automation tools such as Terraform, plus CI/CD pipelines for deploying backend servicesStrong security fundamentals applied through engineering, including access control models, token handling, encryption, MFA, and privacy by designClear communication skills and the ability to work closely with product, frontend, mobile, and security teams while owning backend identity servicesFamiliarity with tools such as Cursor and other AI-augmented development environmentsBenefitsMonthly stipends for health, wellness and tech spendingBenefits (including 100% subsidized medical coverage, dental and vision for you and your dependents)Employees may be eligible for equity rewards offered by Affirm Holdings, Inc. (parent company)Affirm covers all premiums for all levels of coverage for you and your dependentsGenerous stipends for spending on Technology, Food, various Lifestyle needs, and family forming expensesCompetitive vacation and holiday schedules allowing you to take time off to rest and rechargeAn employee stock purchase plan enabling you to buy shares of Affirm at a discountCompany OverviewAffirm is a financial technology services company that offers installment loans to consumers at the point of sale. It was founded in 2012, and is headquartered in San Francisco, California, USA, with a workforce of 1001-5000 employees. Its website is https://www.affirm.com.Company H1B SponsorshipAffirm has a track record of offering H1B sponsorships, with 11 in 2026, 104 in 2025, 96 in 2024, 133 in 2023, 179 in 2022, 132 in 2021, 57 in 2020. Please note that this does not guarantee sponsorship for this specific role.