Senior Software Engineer, Backend; Platform

Senior Software Engineer, Backend (Growth Platform)
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 Engineering team builds systems that power our mission. We build reliable, performant, and scalable solutions that touch every part of the business, enabling new ways to pay, scaling our platforms to the most demanding levels in the industry, and developing seamless servicing experiences.

About the Team
The Growth Platform Engineering team builds the core systems and tools that drive user acquisition, engagement, and lifecycle growth. Our platform enables personalized communications, intelligent experimentation, and scalable services that help customers discover and adopt Affirms products. We collaborate closely with Product, Data Science, and Experience teams to design APIs, event‑driven services, and experimentation frameworks that reach millions of customers across thousands of merchants.

What You’ll Do

Own and deliver quarterly goals for your team, leading engineers through ambiguity to solve open‑ended problems and ensuring everyone is supported throughout delivery.

Collaborate with product management, design, and analytics to ideate, articulate technical constraints, and make decisions that properly consider risks and trade‑offs.

Proactively identify project, process, technology, or business issues, advocate for them, and lead in solving them.

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.

Foster a culture of quality and ownership by setting or improving code review and design standards and advocating for them beyond the team through writing and tech talks.

Develop talent on your team by providing feedback and guidance, and lead by example.

What We Look For

4+ years of experience designing, developing, and launching backend systems at scale using languages such as Python or Kotlin.

Track record of developing highly available distributed systems using AWS, MySQL, and Kubernetes.

Strong understanding of distributed systems, data modeling, and service‑oriented architecture.

Experience defining a technical plan for delivering a significant feature or component with an elegant, simple, and extensible design. Write high‑quality code that is easily understood and used by others.

Proficient at making significant changes in a large code base and developing tools and practices that enable safe changes.

Ownership of growth: proactively seek feedback from team, manager, and stakeholders.

Strong verbal and written communication skills that support effective collaboration with the global engineering team.

Bachelor’s degree in a related field or equivalent practical experience.

Location – Remote Canada
Affirm is proud to be a remote‑first company! Most of our roles are remote and you can work from anywhere within the country of employment. Some roles may require occasional work out of an assigned office.

Pay Grade
Base pay is part of a total compensation package that may include equity rewards, monthly stipends for health, wellness, and tech spending, and benefits such as 100% subsidized medical coverage, dental and vision for you and your dependents. The base pay range for this role is $150,000 – $200,000 per year.

Benefits

Health care coverage – all premiums 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 rest and recharge.

ESPP – employee stock purchase plan enabling you to buy shares of Affirms at a discount.

EEO & Inclusion
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, Affirms will consider for employment qualified applicants with arrest and conviction records.

By clicking "Submit Application," you acknowledge that you have read Affirms 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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