Senior Software Engineer, Upstart

• Bachelor’s degree in Computer Science, Engineering, Mathematics, or a related field (or its equivalent) and 4+ years of software engineering experience
• 6+ years of experience building and operating backend services, APIs, or data-intensive systems in production environments
• Experience owning software through the full development lifecycle, including design, implementation, deployment, monitoring, and on-call support
• Proficiency with at least one modern backend development framework or programming language; experience with Ruby on Rails or the ability to ramp quickly in a Ruby-based codebase
• Experience designing distributed systems, service integrations, or workflow-based architectures that support scalability and reliability

Desirable

• Upstart’s Partner Integrations and Origination Platform team builds and scales the systems that power loan originations across products and lending partners. The team focuses on improving reliability, observability, and scalability across origination workflows while enabling new funding sources and supporting Upstart’s broader platform evolution
• As a Senior Software Engineer (L5) at Upstart, you will design and build scalable backend systems that simplify and standardize origination flows across products and partner types. You’ll help modernize foundational infrastructure, reduce operational complexity, and create extensible platform capabilities that allow teams to onboard new partners and launch new lending experiences more efficiently
• Design and build scalable backend services and platform capabilities that support origination workflows across multiple products and lending partners
• Improve the reliability, observability, and operational resilience of critical origination systems and APIs
• Refactor and decouple legacy systems to create reusable, product-agnostic platform infrastructure that scales across partner and product types
• Build orchestration and workflow solutions that streamline partner onboarding, reduce manual operational work, and improve system consistency
• Collaborate closely with Engineering, Product, Lending Partnerships, Compliance, Legal, and Loan Sales teams to deliver secure and scalable lending experiences
• Drive technical design discussions, author design documents, and contribute to engineering best practices for system quality, monitoring, and operational excellence
• Use AI-assisted development tools and automation thoughtfully to improve engineering productivity and reduce repetitive workflows
• Participate in operational support and incident response, helping identify root causes and implement long-term system improvements