Combining technical aptitude, exceptional communication skills, and creative problem-solving, the Senior Sales Engineer helps enterprise merchants design and implement scalable, reliable solutions on the Affirm platform. This role supports pre-sale activities by leading technical discovery, analyzing requirements, and identifying well-architected solutions, playing a key part in winning deals and driving business forward. As part of the Merchant Engineering team, you will work closely with Affirm’s Sales, Engineering, and Product teams to develop merchant solutions, serve as a trusted technical advisor to customers, identify product enhancements, and help build internal processes that scale.
Responsibilities
Serve as the subject matter expert on Affirm’s integration solutions, demonstrating deep understanding of merchant checkout, customer journeys, and the competitive landscape
Make the most compelling technical case for Affirm to merchants
Consistently demonstrate technical expertise and knowledge of Affirm’s product suite through developing and articulating compelling technical narratives that map Affirm’s capabilities to merchant systems, increasing solution scope and long-term platform adoption
Architect elegant solutions addressing specific customer challenges, including complex integrations and customizations
Design and architect end-to-end solutions that address complex merchant challenges, including advanced integrations and customizations
Evaluate tradeoffs across merchant constraints, platform capabilities, and non-functional requirements, and design tailored solutions aligned with each merchant’s business and technical priorities
Build the trust of technical counterparts, both internally and externally, while also fostering long-term relationships with Enterprise & Key merchants
Partner with sales and partner engineering teams to drive opportunities for the largest customers, leading solution strategy and laying groundwork for successful implementations
Act as the "voice of the customer," providing actionable insights to influence product development and feature prioritization to product management at Affirm
Create and share best practices, reusable assets, and training materials to enhance go-to-market efficiency
Provide technical & architectural input into sales planning and forecasting
Identify technical risks and constraints early
Collaborate with Sales Operations to design scalable, repeatable technical engagement models
Work with Sales operations to build and refine scalable business processes
Develop pre-sales support material and documentation for new products and features
Build and present custom demos as required
Requirements
Passion and drive to change consumer checkouts & payments for the better
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Tailored applications submitted
BA/BS degree in business/technology, or equivalent technical account management experience
4+ years of experience in Sales Engineering, Solution Architecture, Partner Engineering, Solutions Engineering, technical sales or pre-sales roles, focusing on solution architecture and best practices
3+ years of current experience in the payments, fintech, or closely related industry
Strong technical acumen in API integrations, SaaS platforms, and enterprise architectures, with particular emphasis on Checkout processes and payment systems
Proven ability to manage multiple assignments simultaneously, work independently and drive projects to completion with minimum guidance and high attention to detail
Extensive experience with Ecomm, In-Store, Telesales etc. checkout & payment solutions
Solid understanding of financial infrastructure industry trends and emerging technologies
Keen technical mind comfortable writing scripts in at least one programming language
Excellent communication skills, with the ability to articulate complex technical concepts to diverse audiences
Executive presence and strong relationship-building skills
Passion for customer success and dedication to championing the customer voice
Experience architecting solutions & technically positioning them with prospects for e-commerce platforms, payment gateways, in-store point of sale systems etc.
Willingness to travel up to 30% of the time
Benefits
Health coverage at no cost: 100% of premiums for employees and their dependents covered
Spending stipends: Monthly stipends support your tech setup, and the ability to choose health and wellness options that are right for you
Time off to recharge: Flexible time off and generous holiday calendars help you rest when you need to
Own a piece of what you build: Employee stock purchase plan (ESPP) lets you buy Affirm stock at a discount
Important Details
Travel: up to 30% of the time
Visa sponsorship: not available for this position
About the Company
At Affirm, the company exists 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. Affirm is proud to be a remote-first company.
At Affirm, we’re using today’s technology to bring significant disruptive innovation to the financial industry.
