Senior CIAM Engineer, Affirm
£117-157k
+ ESPP
POS installment loans
Open for applications
POS installment loans
1001+ employees
Open for applications
£117-157k
+ ESPP
1001+ employees
Company mission
To deliver honest and transparent financial products that improve users' lives.
Role
Who you are
- Strong experience designing and implementing CIAM systems, with deep, hands-on knowledge of OAuth 2.0, OIDC, SAML, and SCIM beyond basic configuration
- Proven backend engineering experience, with production proficiency in Python and Kotlin building APIs and distributed services
- 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 and distributed systems fundamentals, including API design, data modeling, latency, error handling, and observability
- Experience with Infrastructure as Code and automation tools such as Terraform, plus CI/CD pipelines for deploying backend services
- Strong security fundamentals applied through engineering, including access control models, token handling, encryption, MFA, and privacy by design
- Clear communication skills and the ability to work closely with product, frontend, mobile, and security teams while owning backend identity services
What the job involves
- The Senior CIAM Engineer candidate will have experience building and architecting software as part of a larger team
- The ideal candidate will work effectively with product and engineering teams to evaluate and influence product requirements, design, and implementation to improve the security of Affirm’s products
- You have 5+ years of experience designing, developing and launching backend systems at scale using languages like Python or Kotlin
- You have an extensive track record of developing highly available distributed systems using technologies like AWS, MySQL, Spark and Kubernetes
- You have strong verbal and written communication skills that support effective collaboration with our global engineering team
- You have experience delivering major features, system components or deprecating existing functionality in a system through the definition of a technical and execution plan. You write high quality code that is easily understood and used by others
- Design, build, and operate core CIAM backend services that support customer registration, authentication, authorization, account lifecycle, and profile management for B2C and B2B platforms
- Implement and extend identity standards such as OAuth 2.0, OIDC, SAML, and SCIM in code, ensuring correctness, scalability, and clean integration patterns
- Develop backend APIs and services in Python and Kotlin that expose identity capabilities to web, mobile, and partner applications
- Integrate CIAM platforms with internal systems, including 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, treating identity as a core platform service
- Monitor, debug, and optimise CIAM services for performance, resilience, and abuse detection in high-scale environments
Our take
Affirm offers point-of-sale loans to consumers, working with merchants like Shopify, KAYAK, and Walmart. Buy now, pay later transactions have grown in popularity in recent years, and this business is tapping into the market with a totally different approach to credit - by delivering the Affirm card, the first US debit card with the option to pay-over-time.
Boasting over 21M consumers and 337,000+ merchants, the company offers flexible payback options, ranging from 3 to 36 months. The interest rates run between 0% and 30%, so, while they are not necessarily the cheapest option, Affirm prides itself on having no fees for late payments, no hidden charges, and total transparency about what people will pay before they take out a loan.
Affirm collects payments from the customers and pays the merchants directly, shouldering the risk itself. The company has boosted its market share, expanding its availability beyond the US to include most of Canada, and continues to launch new features and create new partnerships towards bettering its offering.
Kirsty
Company Specialist at Welcome to the Jungle
Insights
-11% employee growth in 12 months
Company
Funding (last 2 of 5 rounds)
Sep 2020
$500m
SERIES G
Apr 2019
$300m
SERIES F
Total funding: $1.1bn
Company benefits
- Compensation: We have a simple, flexible, and transparent remote-first compensation structure so you can make the best decisions for yourself and your family
- Spending Wallets: Access tech, food, lifestyle, and family planning wallets for your expenses
- Supportive Communities: Get involved with our employee resource groups and community groups
- Remote-first Workforce: If your role is remote, you can set up shop anywhere in your home country
- Generous Time Off: Take the time you need when life happens
- Health Benefits: Get a plan that fits your needs
- Mental Healthcare: Take care of your mind with great mental health programs
- Parental Leave: Birth and non-birth parents get 18 weeks’ paid leave. Plus, a 4-week return-to-work transition program, at full base pay
- Away Days: We offer 20 company-wide paid days off—which help our teams collectively pause to recharge
- Learning & Development: Engage in exciting learning programs to level up your growth
Company HQ
Chinatown, San Francisco, CA
Leadership
Max Levchin
(Co-Founder & CEO)Has founded/co-founded numerous companies, holding various executive positions at each, including Paypal, Slide, Glow, HVF Labs, and SciFi VC. Also worked at large brands including Google, Yelp, Yahoo, and Evernote.
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