Software Engineer II, Backend (Repayment UX)

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest.

Identity International is a newly established team created to accelerate Affirm’s international expansion - one of the company’s top priorities. Our vision is to become a trusted, self-sufficient team that drives customer identity capabilities end-to-end across international markets.

The team’s scope includes building and expanding Identity Data Management, Verification, and Decisioning capabilities for Europe, evaluating and integrating third-party KYC vendors, and ensuring alignment with global platform and operational standards. We operate at the intersection of technical depth, regulatory complexity, and cross-geo collaboration, making this an exciting opportunity for engineers who want to shape one of Affirm’s foundational processes.

By joining the team, you will directly influence how Affirm operates Identity in international markets - a challenge that is critical for both business growth and customer trust.

• 1.5+ years of experience as a software engineer.
• Experience designing, developing and launching APIs at scale using languages like Python or Kotlin.
• Experience shipping web apps using declarative UI frameworks like React or Vue.
• Ability to take a simple problem or business scenario into a solution that interacts with multiple software components, writing clear, well tested and extensible code.
• Comfortable navigating a large code base, debugging others' code, and providing feedback through code reviews.
• Proactive ownership of personal growth, seeking feedback from team, manager, and stakeholders.
• Strong verbal and written communication skills for effective collaboration with a global engineering team.

Nice to have:

• Python
• Kotlin
• API design
• React

Languages:

• Polski
• Angielski

What You'll Do:

• Break down projects into tasks, deliver in phases, and collaborate to ensure timely delivery.
• Support product development by working with product, design & analytics: join ideation, state technical constraints, and weigh risks/trade-offs.
• Maintain operations and availability: create/monitor metrics, escalate issues, and participate in on-call/“keep the lights on” work.
• Contribute to team growth: take part in interviews and other development activities.

Most roles can be located anywhere in Poland.