Senior Software Engineer (Fullstack)

TL;DR

Senior Software Engineer (Fullstack): Building and optimizing high-availability systems for customer authentication, verification, and fraud journeys with an accent on backend scalability and frontend user experience. Focus on designing extensible architectures, leading technical delivery, and ensuring system reliability in a high-scale fintech environment.

Location: Must be based in Canada

Salary: $150,000 - $200,000 USD

Company

Affirm is a fintech company reinventing credit to provide consumers with flexible, transparent payment solutions without hidden fees.

What you will do

• Own and deliver quarterly team goals while leading engineers through complex, open-ended technical challenges.
• Collaborate with product management, design, and analytics to define technical constraints and risk-based decisions.
• Develop and maintain high-availability, low-latency backend systems and responsive web interfaces.
• Proactively identify and resolve project, process, and technology issues.
• Support system operations, monitoring, and on-call efforts to ensure service availability.
• Foster a culture of quality by setting code review standards and mentoring team members.

Requirements

• Must be based in Canada
• 4+ years of professional software engineering experience.
• Proficiency in backend development using Python, Kotlin, AWS, MySQL, and Kubernetes.
• Experience shipping web applications with React or Vue.
• Strong ability to define technical plans for significant features with elegant, extensible designs.
• Excellent verbal and written communication skills for global team collaboration.

Culture & Benefits

• 100% subsidized medical, dental, and vision coverage for employees and dependents.
• Generous flexible spending wallets for technology, food, and lifestyle needs.
• Competitive vacation and holiday schedules.
• Employee stock purchase plan (ESPP) with discounted share options.
• Remote-first work environment with a focus on transparency and inclusivity.