Staff Partner Engineer (Partner Engineering)

About Affirm

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. In the US now, Affirm now covers half of all ecommerce volume and has access to nearly all buyers. Our mission, as part of the Merchant and Platform Engineering team, is to grow Affirm’s revenue by helping Merchants and Partners acquire and retain valued customers with industry leading, innovative Buy Now Pay Later POS checkout experiences. We are just getting started. Come be a part of a team shaping the future!

Job Summary

In this role as a Staff Partner Solutions Engineer, you will be responsible for providing technical leadership across Commercial and Product Partnership teams, supporting large cross-functional programs. You will represent Affirm’s engineering team and technologies to partners, such as Shopify and Stripe, while helping drive technical + business strategy.

Key Responsibilities

• Provide day to day support for technical questions from external partner stakeholders
• Lead the development of project plans by driving solution designs, timeline forecasting, task break-down, and testing strategy
• Develop integration support material and documentation for new products rollouts and feature updates
• Collaborate with Product, Eng, and Revenue leadership to build out partnership roadmaps
• Serves as an overarching SME and point of escalation for internal and external teams facing technical challenges
• Maintain clear, professional, and proactive communication with external partners to ensure alignment on goals, timelines, and deliverables, while fostering strong, long-term relationships
• Work cross-functionally with internal teams to ensure seamless coordination, share insights, and drive projects to successful completion while maintaining open and constructive communication
• Provide feedback on integration strategy, potential product enhancements, and operational workflows

Requirements

• 6+ years experience in a Solutions Engineering, Partner Engineering, Solutions Architecture, or customer-facing Software Engineering experience
• Ability to read and understand multiple programming languages
• Experience with long-term project planning and execution
• Experience with Ecommerce or Payment Processor technologies
• Thorough understanding of JSON, HTML, REST API, and Webhook technologies
• Thorough understanding of the following concepts: integrating UX elements w/ backend services, frameworks, and 3rd party developer APIs
• Experience with observability tools and applications
• Excellent verbal and written communication skills