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You will own the technical strategy and end‑to‑end design of high‑availability, micro‑service and event‑driven systems that power Affirm’s card loan platform, including APIs, data models, and system health. You’ll also mentor junior engineers and lead design reviews to uphold best practices.
5+ years of software development experience with strong system design skills, proven leadership, and excellent communication. Proficiency in modern languages like Python or Kotlin, plus experience with cloud platforms (AWS, Azure, GCP) and containerization (Docker, Kubernetes). Familiarity with SQL/NoSQL databases and RESTful APIs is required.
The role builds the “financial brain” that matches every swipe to the correct loan, a critical component of Affirm’s high‑throughput decision engine and a key enabler of the company’s rapid growth. Your work directly impacts real‑time approvals, origination, and refunds for millions of transactions.
A senior engineer who thrives on solving complex, high‑scale distributed systems challenges, enjoys leading technical strategy, and is passionate about mentoring a team. Ideal for candidates residing in Canada’s eligible provinces who seek a remote‑first, high‑impact role.
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.
The Card Loan Platform team builds the high-throughput decision engine at the heart of Affirm’s card products. Unlike traditional cards, every pay-later transaction is backed by its own unique loan, and our system is the "invisible piping" that makes this complex model work at scale. Every swipe triggers our platform to solve a hard problem in milliseconds: matching messy, fragmented payment network data to the correct loan to drive real-time approvals, origination, and refunds.
As Affirm experiences explosive growth, our team's contributions are a key enabler. This isn't just another backend role; you'll be building the "financial brain" for our flagship card products, with your work on the critical path for every single swipe. We're tackling a unique, high-stakes distributed systems challenge that demands exceptional correctness and massive scale. You will partner closely with product, data science, and engineering teams to design and build the future of our industry-leading money movement platform.
If you are passionate about making foundational design decisions and building a beloved, lasting financial brand—come join us. It’s going to be an amazing ride!
What you'll do
What we look for
This remote role is open only to candidates residing in Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario, Prince Edward Island, or Saskatchewan
Pay Grade - N
Equity Grade - 6
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.)
CAN base pay range per year: $153,000 - $213,000 CAD
#LI-Remote
Remote-first with flexibility built in
Affirm is proud to be a remote-first company. Most roles can be done from almost anywhere within the country of employment. Some positions may occasionally require in-person work at an Affirm office, and a few are office-based due to the nature of the work. All new hires will be invited to attend an in-person onboarding experience.
Benefits designed for you
Our benefits reflect our commitment to care, transparency, and flexibility. Here are a few highlights:
We’re committed to providing an inclusive interview process, including accommodations for candidates with disabilities. If you need support, we’re happy to help.
For positions based in San Francisco or Los Angeles: Affirm considers qualified applicants with arrest and conviction records, as required by law.
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