Senior Software Engineer, Backend (Lakehouse Infra)

Remote US · Remote · 4+ years experience · Remote · Posted Oct 13, 2026

At a glance

The Lakehouse Infra team provides reliable, scalable, self-serve and Affirm-optimized offline data access to enable ML, Product, and Financial Engineering success.
The team is responsible for hosting the data infrastructure that serves as a backbone for processing various business critical money and loan movement workloads at Affirm across batch and analytics ecosystems.

Own and deliver quarterly goals for your team, leading engineers through ambiguity to solve open-ended problems, and ensuring that everyone is supported throughout delivery.
Support 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.
Support the operations and availability of your team’s artifacts by creating and monitoring metrics, escalating when needed, and supporting keep the lights on and on-call efforts.
Foster a culture of quality and ownership on your team by setting or improving code review and design standards, and advocating for them beyond your team through writing and tech talks.
Help develop talent on your team by providing feedback and guidance, and leading by example.

You have 4+ years of experience designing, developing and launching backend systems at scale using languages like Python or Kotlin.
You have a track record of developing highly available distributed systems using technologies like AWS, MySQL, and Kubernetes.
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.