Senior Software Engineer, Back-end, (Repayment Scheduling)

About Affirm

At Affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most.

The Role

The Repayment Scheduling engineering team is growing rapidly, and we're looking for a Senior Software Engineer specializing in Backend development. We're a Backend team located entirely in Europe within the same time zone, but culturally rooted in Silicon Valley. We build and own the system that enables our users to automate their payments, at a scale of up to $40B each year. We directly own the configuration and orchestration of those payments. We directly improve the financial lives of over 20 million people, giving them peace of mind that their payments will be made on time.

Our work is agile and fast-paced, shipping new code to production every two-week sprint, and rigorously measuring the impact it has on our users' lives and company financials. This role rewards curiosity, ownership, and a builder's mindset. You'll know exactly what your objectives are, you'll have what you need to hit them, and you'll choose your own path to get there. You'll learn quickly from experienced teammates and grow your craft on problems that matter at scale.

What You'll Do

• You will be responsible for owning and delivering quarterly goals for your team, leading engineers on your team through ambiguity to solve open-ended problems, and ensuring that everyone is supported throughout delivery.
• You will support your peers and stakeholders in the product development lifecycle by collaborating with product management, design & analytics by participating in ideation, articulating technical constraints, and partnering on decisions that properly consider risks and trade-offs.
• You will proactively identify project, process, technology or business issues, advocate for them, and lead in solving them.
• 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.
• You will foster a culture of quality and ownership on your team by setting or improving code review and design standards for your team, and advocating for them beyond your team through your writing and tech talks.
• You will help develop talent on your team by providing feedback and guidance, and leading by example.

We believe the people building honest financial products at Affirm should share in its success. That's why our total rewards are designed to support your health, growth, financial well-being, and future. In service of our mission, we reward employees through a combination of base pay, equity (from parent company), and comprehensive benefits.

• Base pay range: 308,000 zł - 428,000 zł per year.
• Equity: Eligible to receive equity from the parent company each year. Equity grade: 4 (New hire equity: $32,000-$48,000; Annual Refresh: $10,000; Reward equity: $0-$150,000).
• Flexible spending wallets for technology and wellbeing related needs, reimbursable up to 1390 zł per month.
• Competitive paid time off, paid public holidays, and additional paid Away Days.
• Comprehensive private healthcare through Lux Med's Platinum package (100% subsidized for you and your dependents).
• A MultiSport card to support your health and well-being.
• Learning and development programs.
• Family healthcare support through Maven and parental leave support through Parentaly.
• Mental well-being support through Lyra, including up to 12 confidential counseling or coaching sessions each year.
• Financial well-being support through Northstar, with unlimited access to Certified Financial Advisors and planning tools.
• Employee Resource Groups (ERGs) that foster connection and inclusion.
• Employee stock purchase plan (ESPP) to buy Affirm stock at a discount.

What We Look For

• You have 4+ years of experience designing, developing and launching backend systems at scale using languages like Python or Kotlin.
• You have a track record of developing highly available distributed systems using technologies like AWS, MySQL and Kubernetes.
• You have experience defining a technical plan for the delivery of a significant feature or system component with an elegant, simple and extensible design. You write high quality code that is easily understood and used by others.
• You are proficient at making significant changes in a large code base, and have developed a suite of tools and practices that enable you and your team to do so safely.
• Your experience demonstrates that you take ownership of your growth, proactively seeking feedback from your team, your manager, and your stakeholders.
• You have strong verbal and written communication skills that support effective collaboration with our global engineering team.