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Senior Software Engineer, Backend (Batch Infrastructure)

Affirm

$169,000 - $240,000
Oct 13, 2025
Remote, US
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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. The vision for the Batch Infra team @ Affirm team is to provide reliable, scalable, self-serve and Affirm-optimized compute solution to enable ML, Product, and Financial Engineering success.

Requirements

  • 4+ years of experience designing, developing and launching backend systems at scale using languages like Python or Kotlin
  • track record of developing highly available distributed systems using technologies like AWS, MySQL and Kubernetes
  • Experience building and managing Workflow Orchestration frameworks like Airflow, Flyte, Prefect, Temporal, Luigi, etc.
  • Experience with or working knowledge for efficiently scaling frameworks like Spark/Flink for extremely large scale datasets on Kubernetes
  • experience defining a technical plan for the delivery of a significant feature or system component with an elegant, simple and extensible design
  • write high quality code that is easily understood and used by others
  • 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

Responsibilities

  • owning and delivering quarterly goals for your team
  • leading engineers on your team through ambiguity to solve open-ended problems
  • supporting 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
  • proactively identify project, process, technology or business issues, advocate for them, and lead in solving them
  • supporting 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
  • fostering 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
  • help develop talent on your team by providing feedback and guidance, and leading by example

Other

  • 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
  • LI-Remote
  • Affirm is proud to be a remote-first company!
  • The majority of our roles are remote and you can work almost anywhere within the country of employment.
  • Affirmers in proximal roles have the flexibility to work remotely, but will occasionally be required to work out of their assigned Affirm office.
  • A limited number of roles remain office-based due to the nature of their job responsibilities.
  • We’re extremely proud to offer competitive benefits that are anchored to our core value of people come first.
  • Some key highlights of our benefits package include: Health care coverage - Affirm 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 Affirm 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.
  • [For U.S. positions that could be performed in Los Angeles or San Francisco] Pursuant to the San Francisco Fair Chance Ordinance and Los Angeles Fair Chance Initiative for Hiring Ordinance, Affirm will consider for employment qualified applicants with arrest and conviction records.
  • By clicking "Submit Application," you acknowledge that you have read Affirm'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.