Senior Software Engineer, Backend – Financial Platforms

🕒 September 13, 2025

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Affirm

WebsiteLinkedInAll Job Openings

1001 - 5000 employees

Founded 2012

💳 Fintech

👥 B2C

🛍️ eCommerce

💰 Post-IPO Equity on 2021-01

Fintech • B2C • eCommerce

Affirm is a financial technology company that offers a 'Buy Now, Pay Later' service, allowing consumers to make purchases and pay for them over time with flexible payment plans. Affirm eliminates hidden fees and compound interest, providing clear terms and conditions for its users. The company also offers the Affirm Card, a debit card that allows users to request to pay over time for larger purchases or pay in full for smaller ones. Affirm partners with various retailers across multiple categories, including electronics, apparel, and travel, providing customers with the convenience of paying over time at checkout both online and in physical stores. Affirm's services are integrated with Apple Pay, enabling customers to make payments seamlessly from their iPhone or iPad.

📋 Description

• Own and deliver quarterly goals for your team and lead engineers through ambiguity to solve open-ended problems • Support peers and stakeholders in product development lifecycle by collaborating with product management, design & analytics, participating in ideation, articulating technical constraints, and partnering on decisions considering risks and trade-offs • Proactively identify project, process, technology or business issues and lead in solving them • Support operations and availability by creating and monitoring metrics, escalating when needed, and supporting "keep the lights on" & on-call efforts • Foster a culture of quality and ownership by setting or improving code review and design standards, advocating beyond your team through writing and tech talks • Help develop talent on your team by providing feedback and guidance and leading by example

🎯 Requirements

• 4+ years of experience as a software engineer • Experienced in designing, developing and launching backend systems at scale technologies like Python, Kotlin, AWS, MySQL, and Kubernetes • Experience shipping web apps using declarative UI frameworks like React or Vue • Experience defining a technical plan for delivery of a significant feature or system component with an elegant, simple and extensible design • Proficient at making significant changes in a large code base and developed tools/practices for safe changes • Strong verbal and written communication skills • Experience demonstrating ownership of growth and proactively seeking feedback

🏖️ Benefits

• Type of employment: Contract of Employment • Flexible Spending Wallets for tech, food and lifestyle • Away Days - wellness days to take off work and recharge • Learning & Development programs • Parental benefits • Employee Resource & Community Groups • 100% subsidized medical coverage, dental and vision for you and your dependents • Monthly stipends for health, wellness and tech spending • ESPP - Employee stock purchase plan • Time off - competitive vacation and holiday schedules