Principal Software Engineer, Pricing Platform

At Upstart, we’re united by a mission that matters: to radically reduce the cost and complexity of borrowing for all Americans. Every day, we bring creativity, experimentation, and advanced AI to reshape access to credit, helping millions move forward financially with clarity and confidence. As the leading AI lending marketplace, we partner with banks and credit unions to expand access to affordable credit through technology that’s both radically intelligent and deeply human. Our platform runs over one million predictions per borrower using more than 3,000 signals, powering smarter, fairer decisions for millions of customers. But the numbers only hint at the impact. Every idea, every voice, and every contribution moves us closer to a world where credit never stands between people and their financial progress. We’re proudly digital-first, giving most Upstarters the flexibility to do their best work from wherever they thrive, alongside teammates across 80+ cities in the US and Canada. Digital-first doesn’t mean distant. We’re intentional about in-person connection through team onsites, planning sessions, and moments that spark creativity and trust. And whether you choose to work primarily from home or collaborate in-person from one of our offices in Columbus, Austin, the Bay Area, or New York City (opening Summer 2026), you’ll have the support to work in the way that works best for you. If you’re energized by tackling meaningful problems, excited to innovate with purpose, and motivated by work that truly matters, we’d love to hear from you. Upstart's Core Pricing team drives key initiatives that directly influence our revenue streams, unit economics, and product strategy. The team builds and evolves the common systems used to translate underwriting insights into accurate risk and profitability decisions for every loan we originate, while enabling a seamless borrower experience across products. As a Principal Software Engineer on Core Pricing, you will provide technical leadership that spans engineering, machine learning, and product organizations — not just the Pricing team. You will shape the long-term architecture, strategy, and operating model for pricing systems that serve multiple product lines and stakeholders across the company. Working in close partnership with engineering, ML, product, and business leaders across Personal Loans, Auto, HELOC, and adjacent platforms, you will lead the development of scalable, low-latency, highly reliable services that convert ML underwriting outputs into pricing decisions, and you will help define the future of Upstart's pricing platform as the company expands into new products, markets, and capabilities. Our stack spans Python (Django, FastAPI, Celery), Kotlin/Spring Boot, gRPC/Protobuf, Temporal for workflow orchestration, AWS (S3, RDS/Postgres, ElastiCache), Kubernetes/Helm, and Datadog for observability.