About the role

Role overview

Join Affirm as a Senior Fullstack Software Engineer on the Consumer Growth Experience Engineering (CGX) team. This remote-first role focuses on delivering quarterly goals, partnering across product, design, and analytics, and driving a culture of quality and ownership.

Responsibilities

Own and deliver quarterly goals for CGX initiatives.
Define technical plans to deliver significant features or system components, ensuring the design is elegant, simple, and extensible.
Collaborate cross-functionally with product management, design, and analytics—supporting the product development lifecycle, including ideation and articulating technical constraints.
Proactively identify problems across projects, processes, technology, or business needs, and lead resolutions.
Drive safe changes in large codebases using tooling and practices that improve reliability.

Requirements

4+ years of software engineering experience.
Strong ability to define technical plans and deliver high-quality, maintainable code.
Proficient with JavaScript/TypeScript.
Experience designing, developing, and launching backend systems at scale.
Strong verbal and written communication skills for collaboration with global teams.
Experience shipping web apps using declarative UI frameworks such as React or Vue.
Demonstrated ownership of growth, including proactively seeking feedback from team and stakeholders.
Bachelor’s degree in a related field or equivalent practical experience.

Nice-to-haves (mobile & experimentation)

Experience leading significant mobile initiatives (React Native or native), including architecture definition, cross-functional launches, and reliability in production.
Experience implementing experimentation, feature flagging, and analytics instrumentation for measurable impact and safe rollouts.
Experience working across React Native and native boundaries (Swift/Kotlin), including debugging platform-specific issues and improving developer tooling, CI/CD, and release processes.

About Affirm

Affirm is a consumer-focused financial technology company that helps people buy now and pay over time. Its engineering teams build scalable products and platforms to support high-impact consumer experiences, growth initiatives, and measurable outcomes.