Senior Software Engineer, Backend (Consumer Data Platform)

Responsibilities

• Drive planning and prioritization of projects based on product, technical, and business goals using data-driven decision making.
• Design and build scalable backend systems, APIs, and data models that power communications, experimentation, and personalization.
• Partner with Product Managers, Data Scientists, and Analysts to define and execute strategies for customer acquisition and engagement.
• Establish and uphold engineering best practices to ensure services are secure, observable, and performant at scale.
• Mentor and support junior engineers, contributing to a culture of learning, collaboration, and technical excellence.

Requirements

• 6+ years of experience as a Software Engineer with a focus on backend systems.
• Strong understanding of distributed systems, service-oriented architecture, and how architectural choices affect scalability, reliability, and maintainability.
• Proven track record of delivering complex backend systems in production environments.
• Excellent written and verbal communication skills, with proficiency in asynchronous communication (design docs, technical specs, project plans, etc.).
• Demonstrated ability to collaborate effectively across Product, Data Science, Analytics, and Design teams.
• Proficiency in Python, Kotlin, or similar languages (experience with both is a plus).
• Bachelor’s degree in a related field or equivalent practical experience.

What we look for

• Experience with AWS or other major cloud providers.
• Experience with experimentation platforms (A/B testing frameworks, feature flagging systems).
• Familiarity with event-driven architectures and stream processing tools (e.g., Kafka, Kinesis).
• Exposure to large-scale personalization, recommendation, or messaging systems.
• 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
• 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:
• Health coverage at no cost: We cover 100% of premiums for employees and their dependents.
• Spending stipends: Monthly stipends support your tech setup, and the ability to choose health and wellness options that are right for you.
• Time off to recharge: Flexible time off and generous holiday calendars help you rest when you need to.
• Own a piece of what you build: Our employee stock purchase plan (ESPP) lets you buy Affirm stock at a discount.
• 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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