Software Engineer II, Frontend (Purchasing Integrations)

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. The Purchasing Integrations team is responsible for the JavaScript SDK and frontend infrastructure that power Affirm at checkout. We build the library that merchants embed directly into their storefronts - rendering payment messaging and buttons, initiating checkout flows, and orchestrating secure, real-time communication with Affirm’s web app. This code runs on high-traffic production sites, so performance, resiliency, and backward compatibility are critical. Milliseconds matter, and failure is immediately visible to merchants and consumers. This role is deeply frontend-focused. Engineers work on bundle optimization, script loading strategies, rendering performance, and Web Vitals, ensuring our SDK integrates cleanly into diverse merchant stacks without degrading UX. We design extensible UI components that support evolving checkout experiences while keeping integration simple and incremental for developers. Security enhancements and modern browser-based communication patterns are core to the work. The team operates at the intersection of platform and product: building reusable primitives, experimenting with new checkout surfaces, and translating complex requirements into intuitive APIs and polished UI. It’s an opportunity to work on high-scale frontend systems embedded across the web—where engineering rigor directly impacts conversion, growth, and user experience. What You'll Do: · With the support of your team’s tech lead and manager, you will break down larger projects into individual tasks, deliver them in multiple phases, and collaborate with others to ensure timely delivery of your work. · You will support your peers and stakeholders in the product development lifecycle by collaborating with product management, design & analytics by participating in ideation, articulating technical constraints, and partnering on decisions that properly consider risks and trade-offs. · 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” & on-call efforts. · You will contribute to a sense of community on your team by engaging in growth and development activities such as participation in the interview process. What We Look For: · You have a total of 1.5+ years of experience as a software engineer. · You have experience shipping web apps using declarative UI frameworks like React or Vue. · You have experience working with Javascript/Typescript. · You have experience designing, developing and launching APIs at scale using languages like Python or Kotlin. · You have mastered taking a simple problem or business scenario into a solution that interacts with multiple software components, and executing on it by writing clear, easily understood, well tested and extensible code. · You are comfortable navigating a large code base, debugging others' code, and providing feedback to other engineers through code reviews. · Your experience demonstrates that you take ownership of your growth, proactively seeking feedback from your team, your manager, and your stakeholders. · You have strong verbal and written communication skills that support effective collaboration with our global engineering team. · This position requires either equivalent practical experience or a Bachelor’s degree in a related field. Pay Grade - L Equity Grade - 06 Employees new to Affirm typically come in at the start of the pay range . Affirm focuses on providing a simple and transparent pay structure which is based on a variety of factors, including location, experience and job-related skills. 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: $ 160,000 - $ 210,000 USA base pay range (all other U.S. states) per year: $142,000 - $192,000 #LI-Remote Affirm is proud to be a remote-first company! The majority of our roles are remote and you can work almost anywhere within the country of employment. Affirmers in proximal roles have the flexibility to work remotely, but will occasionally be required to work out of their assigned Affirm office. A limited number of roles remain office-based due to the nature of their job responsibilities. We’re extremely proud to offer competitive benefits that are anchored to our core value of people come first. Some key highlights of our benefits package include: Health care coverage - Affirm covers all premiums for all levels of coverage for you and your dependents Flexible Spending Wallets - generous stipends for spending on Technology, Food, various Lifestyle needs, and family forming expenses Time off - competitive vacation and holiday schedules allowing you to take time off to rest and recharge ESPP - An employee stock purchase plan enabling you to buy shares of Affirm at a discount 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. [For U.S. positions that could be performed in Los Angeles or San Francisco] Pursuant to the San Francisco Fair Chance Ordinance and Los Angeles Fair Chance Initiative for Hiring Ordinance, Affirm will consider for employment qualified applicants with arrest and conviction records. By clicking "Submit Application," you acknowledge that you have read Affirm's Global Candidate Privacy Notice and hereby freely and unambiguously give informed consent to the collection, processing, use, and storage of your personal information as described therein.

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