Senior Software Engineer, Fullstack (Consumer Engineering)

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. Consumer Growth Experience Engineering (CGX) builds the platforms and end‑to‑end experiences that power our consumer growth across push, email, app, and web. We own the core engagement surfaces and systems that help customers discover value, onboard seamlessly, and take confident next steps by using personalization, segmentation, and experimentation to deliver the right experience at the right moment. What You'll Do You will own and deliver quarterly goals for your team, leading engineers through ambiguity to solve open‑ended problems and ensuring everyone is supported throughout delivery. You will support peers and stakeholders in the product development lifecycle by collaborating with product management, design, and analytics, participating in ideation, articulating technical constraints, and partnering on decisions that consider risks and trade‑offs. You will proactively identify project, process, technology, or business issues, advocate for them, and lead in solving them. You will support the operations and availability of your team’s artifacts by creating and monitoring metrics, escalating when needed, and supporting “keep the lights on” and on‑call efforts. You will foster a culture of quality and ownership by setting or improving code review and design standards for your team and advocating for them beyond your team through writing and tech talks. You will help develop talent on your team by providing feedback and guidance, and leading by example. What We Look For Experience leading significant mobile initiatives (React Native or native), including defining architecture, coordinating cross‑functional launches, and maintaining high reliability in production environments. Experience working across the React Native and native boundaries (Swift/Kotlin), debugging platform‑specific issues and improving developer tooling, CI/CD, and release processes for mobile apps. Experience implementing experimentation, feature flagging, and analytics instrumentation in mobile applications, ensuring safe rollouts and measurable impact. Experience shipping web apps using declarative UI frameworks like React or Vue. Proficiency in working with JavaScript/TypeScript. 4+ years of experience as a software engineer. Experience designing, developing, and launching backend systems at scale using technologies like Python, Kotlin, AWS, MySQL, and Kubernetes. Ability to define a technical plan for the delivery of a significant feature or system component with an elegant, simple, and extensible design, and write high‑quality code that is easily understood and used by others. Proficiency at making significant changes in a large codebase and having developed a suite of tools and practices that enable safe evolution of the codebase. Proven ownership of growth, proactively seeking feedback from team, manager, and stakeholders. Strong verbal and written communication skills that support effective collaboration with a global engineering team. Either equivalent practical experience or a Bachelor’s degree in a related field. Compensation Pay Grade: N Equity Grade: USA 8 Base pay is part of a total compensation package that may include equity rewards, monthly stipends for health, wellness and tech spending, and benefits (including 100% subsidized medical coverage, dental and vision for you and your dependents). USA base pay range (CA, WA, NY, NJ, CT) per year: $190,000 – $240,000. USA base pay range (other U.S. states) per year: $169,000 – $219,000. Benefits Health care coverage – all premiums covered for all levels of coverage for you and your dependents. Flexible Spending Wallets – generous stipends for technology, food, lifestyle needs, and family forming expenses. Time off – competitive vacation and holiday schedules allowing you to take time off to rest and recharge. ESPP – employee stock purchase plan enabling you to buy shares of the company at a discount. EEO Statement We believe it’s on us to provide an inclusive interview experience for all, including people with disabilities. We are happy to provide reasonable accommodations to candidates in need of individualized support during the hiring process. #J-18808-Ljbffr