Senior Software Engineer, Backend (ML Training and Serving)

Location: Remote within the United States or Canada; occasional in-person onboarding may be required.

Base pay: $195,000–$225,000 per year in CA, WA, NY, NJ, and CT; $173,000–$233,000 per year in other U.S. states.

Company

Affirm provides transparent pay-over-time solutions and uses machine learning for underwriting, fraud, servicing, and personalization.

What you will do

• Own and deliver quarterly team goals while leading engineers through ambiguous, open-ended problems.
• Collaborate with product management, design, and analytics to shape solutions and assess technical risks and trade-offs.
• Identify and lead resolution of project, process, technology, and business issues.
• Operate and improve team systems through metrics, monitoring, escalation, and on-call support.
• Set code review and design standards, promote quality and ownership, and contribute through writing and technical talks.
• Develop team talent through feedback, guidance, and technical leadership.

Requirements

• 4+ years of experience designing, developing, and launching backend systems at scale using languages such as Python or Kotlin.
• Experience developing highly available distributed systems with technologies such as AWS, MySQL, and Kubernetes.
• Ability to define technical plans for significant features or system components and create simple, extensible designs.
• Ability to make significant changes safely in a large codebase using appropriate tools and practices.
• Strong ownership of professional growth and proactive feedback-seeking.
• Strong verbal and written communication skills for collaboration with a global engineering team.
• Equivalent practical experience or a Bachelor’s degree in a related field.

Nice to have

• Experience training and deploying machine learning models in production.

Culture & Benefits

• Remote-first work with flexibility within the country of employment.
• All new hires attend an in-person onboarding experience.
• 100% subsidized medical coverage, including employees and dependents, plus dental and vision benefits.
• Monthly technology, health, and wellness spending stipends.
• Flexible time off, holiday calendars, and an employee stock purchase plan.
• Inclusive interview accommodations are available for candidates with disabilities.