Software Engineer (CIAM)

Affirm, Inc.; New York (NY); Remote; USD 90,000 - 130,000; Full time

Benefits offered by this job

Remote-first compensation structure

Remote-first Workforce

Generous Time Off

Health Benefits

Parental Leave

Away Days

Learning & Development

Job summary

Affirm, Inc. is seeking a mid-level Software Engineer to contribute to core CIAM capabilities, building backend services for registration, login, and account life cycles.

You will write Python or Kotlin code, implement authentication features, and collaborate with security and product teams to deliver secure customer experiences.

Qualifications

• Bachelor's degree or equivalent practical experience in a related field.
• Experience writing, testing, and debugging software in Python or Kotlin.
• Foundational backend and security fundamentals for CIAM.

Responsibilities

• Build and maintain backend services powering registration, login, and account lifecycles.
• Implement authentication features including MFA and device binding.
• Collaborate with product, security, and partner teams to deliver secure identity capabilities.

Skills

Python

Kotlin

CIAM basics

Education

Bachelor's degree in related field

Tools

Okta

Auth0

ForgeRock

Git

Job description

• At Affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most
• Affirm is building the next generation of customer identity and authentication. This role is a hands-on, mid-engineering position inside Information Security, contributing to core CIAM capabilities that protect customers and support growth
• You will help build and maintain backend services that power registration, login, authorization, and account lifecycle flows across B2C and B2B experiences. You will work with experienced engineers and partner teams to deliver scoped identity features with strong security fundamentals, reliability, and operational rigor
• Build and ship customer-facing authentication features—from smoother login experiences to MFA, step-up authentication, and device binding—with mentorship from experienced engineers
• Develop backend services and APIs in Python or Kotlin, turning product requirements into working software that helps customers access their accounts securely
• Work with modern identity technologies such as Okta, Auth0, and ForgeRock, writing custom code and integrations that connect identity capabilities to web, mobile, and partner applications
• Take scoped features through the software development lifecycle: contribute to design, write readable code and automated tests, participate in code reviews, and deploy to production with support from the team
• Solve real engineering problems by debugging services, improving reliability, and using logs and metrics to understand how your code behaves in production
• Collaborate with engineering and product partners, learn secure development practices, and grow your software engineering skills while building expertise in authentication

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

This position requires either equivalent practical experience or a Bachelor’s degree in a related fieldDemonstrated ability to write, test, and debug software in Python, Kotlin, or a similar language through coursework, internships, personal projects, open source, or professional work. No fixed minimum years of experience requiredWe’re looking for a Mid-Level Software Engineer with solid engineering fundamentals, a passion for authentication, and an eagerness to learn customer identity and access management. You do not need extensive authentication or CIAM experience—we value your ability to build software, solve problems, and grow in the spaceGenuine curiosity about how authentication works and motivation to build secure, reliable customer experiences. Prior experience with identity protocols or CIAM platforms is a plus, not a requirementA practical problem-solving approach, willingness to ask questions, and openness to learning through mentorship and code reviewClear communication and the ability to collaborate with engineering, product, and security teammatesFoundational understanding of backend development, including APIs, data structures, databases, and version control