Senior Staff Backend Engineer - AI-Driven FinTech (Remote)

Affirm; Madison (WI); Remote; USD 236,000 - 296,000; Full time

Benefits offered by this job

Health coverage for employee and dep.

Tech stipends for setup

Flexible time off

Employee stock purchase plan

Job summary

Affirm is hiring a Senior Staff Software Engineer to define and lead technical excellence across Cards. You will shape architecture, lead with AI, and collaborate with engineering leaders to deliver scalable solutions.

The role emphasizes ownership, cross-functional influence, and building for scale in a remote-first environment. The position requires extensive full-stack experience, collaboration across teams, and a track record of delivering high-impact projects.

Qualifications

• 10+ years of experience across the stack and improving backend architecture.
• Experience driving change across large engineering organizations.
• Track record of leading critical projects with cross‑team impact.
• Experience shaping technical strategy to improve reliability and responsiveness.

Responsibilities

• Define the technical direction, long-term roadmap, and strategic initiatives for Cards.
• Lead from the front using AI to build fast, and drive the team’s work.
• Collaborate with stakeholders to champion technical excellence and business outcomes.
• Create ownership culture with accountability for scalable, efficient systems.
• Architect and decide on platform, tools, and technologies for reliability.
• Mentor engineers and promote best practices across teams.

Skills

Full-stack experience

AI collaboration

React Native

JavaScript

Kotlin

Leadership

Cross-functional

Education

Bachelor’s degree

Job description

Affirm is hiring a Senior Staff Software Engineer to define and lead technical excellence across Cards. You will shape architecture, lead with AI, and collaborate with engineering leaders to deliver scalable solutions.

The role emphasizes ownership, cross-functional influence, and building for scale in a remote-first environment. The position requires extensive full-stack experience, collaboration across teams, and a track record of delivering high-impact projects.