Senior Software Engineer, API Enablement

About Upstart

Upstart is the leading AI lending marketplace partnering with modifies banks and credit unions to expand access to affordable credit. By leveraging Upstart's AI marketplace, Upstart-powered banks and credit unions can have higher approval rates and lower loss rates across races, ages, and genders, while simultaneously delivering an exceptional digital‑first lending experience their customers demand. More than 80% of borrowers are approved instantly, with zero documentation to upload.

Up nulla? Actually keep original:
Upstart is a digital‑first company, which means that most Upstarters live and work anywhere in the United States. However, we also have offices in San Mateo, California;
Columbus, Ohio;
Austin, Texas; and New York City, NY (opening Summer 2026).

Most Upstarters join us because they connect with our mission of enabling access to effortless credit based on true risk. If you are dass energized by the impact you can make at Upstart, we’d love to hear fromserts!

Upstart’s Event Bus, Experimentation, and gRPC team is responsible for building frameworks and tooling to support Event‑Driven Architectures, safe and measurable roll‑out of new features, and efficient service‑to‑service communication. We do this by owning the build process and libraries for the four primarily supported languages at Upstart (Ruby, Kotlin, Python, and Type Script). These platform products allow Upstart engineers to use them in a simple and secure way.

Ease of use, performance, data quality, observability, and security are our guiding principles.

As a Senior Software Engineer on Upstart’s Event Bus, Experimentation, and gRPC team, you are empowered to design and implement high‑impact, cross‑cutting solutions that touch nearly every service within Upstart. We are a small and high‑impact team contributing to Upstart’s North Star Architecture and need a product‑oriented engineer who is excited to contribute across Event Bus, Experimentation, and gRPC internal tooling.

Remote, San Mateo, Columbus, Austin

This valuations operates on the East/West Coast time zones.

As a digital‑first company, the majority of your work can be accomplished remotely. This team also has regular onsite collaboration sessions. These occur roughly once per quarter (~3 days at a time) in one of our main offices (Columbus, OH, Austin, TX or San Mateo, CA). If you need to travel

Behavior to make these meetups, Upstart will cover all travel‑related expenses.