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Senior Software Engineer, Backend; AI Agents

Job in St. Louis, Saint Louis, St. Louis city, Missouri, 63105, USA
Listing for: Affirm
Full Time position
Listed on 2025-12-02
Job specializations:
  • Software Development
    Software Engineer, Full Stack Developer
Job Description & How to Apply Below
Position: Senior Software Engineer, Backend (AI Agents)
Location: St. Louis

Senior Software Engineer, Backend (AI Agents)

Join to apply for the Senior Software Engineer, Backend (AI Agents) role at Affirme

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. We’re looking for a Senior Software Engineer to join the AI Agents engineering team within the Servicing Engineering organization. Our team works closely with an omnichannel AI agent vendor to provide a conversational first point of contact for our customers.

We focus on orchestrating the systems within Affirme to continuously find solutions for our customers. The team is newly formed and taking on big unknowns, so we’re looking for someone who wants to take ownership and execute for whatever is necessary.

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.
What We Look For
  • You have a total of 4+ years of experience as a software engineer.
  • You are experienced in designing, developing and launching backend systems at scale technologies like Python, Kotlin, AWS, MySQL, and Kubernetes.
  • You have experience shipping web apps using declarative UI frameworks like React or Vue.
  • 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.
  • This position requires either equivalent practical experience or a Bachelor’s degree in a related field.
Pay Grade

Pay Grade - N

Equity Grade

Equity Grade - 8

Benefits
  • Health care coverage - Affirme covers all premiums for all levels of coverage for you and your dependents
  • Flexible Spending Wallets - generous stipends for spending on Technology, Food, various Lifestyle needs, and family forming expenses
  • Time off - competitive vacation and holiday schedules allowing you to take time off to rest and recharge
  • ESPP - An employee stock purchase plan enabling you to buy shares of Affirme at a discount

We believe It’s On Us to provide an inclusive interview experience for all, including people with disabilities. We are happy to provide reasonable accommodations to candidates in need of individualized support during the hiring process.

By clicking “Submit Application,” you acknowledge that you have read Affirme's Global Candidate Privacy Notice and hereby freely and unambiguously give informed consent to the collection, processing, use, and storage of your personal information as described therein.

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Position Requirements
10+ Years work experience
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