Upstart
Senior Software Engineer, Marketplace Optimization
$167K–$231K
United States +2 · Remote · Senior · Full-time · Posted Jul 10, 2026
- Location
- United States
Remote
remote - Experience
- 5+ years of professional software engineering experience building backend or distributed systems.
- Education
- Bachelor's degree in Computer Science, Engineering, Mathematics, or a related field (or equivalent practical experience).
About the job
Build and operate reliable distributed backend systems that make real-time borrower matching, offer construction, and marketplace optimization decisions.
What you'll do
- Design, build, and operate highly available backend services for the real-time lending marketplace.
- Develop scalable systems for experimentation and new marketplace optimization and monetization strategies.
- Partner across teams and contribute to architecture, code reviews, testing, and operational ownership.
What they ask for
- Bachelor's degree in Computer Science, Engineering, Mathematics, or a related field (or equivalent practical experience).
- 5+ years of professional software engineering experience building backend or distributed systems.
- Production service development experience with one or more of Ruby on Rails, Python, or Kotlin; experience designing APIs and scalable distributed systems.
- Experience operating business-critical production services, cloud platforms, and modern cloud-native applications; cross-functional collaboration experience.
Nice to have
- Experience with marketplaces, recommendation systems, optimization engines, or financial systems.
- Experience with event-driven architectures, Kafka, workflow orchestration, real-time data processing, or Machine Learning/Data Science teams.
Pay
$166,900 — $230,900 USD (base salary)
Tools
Ruby on Rails, Python, Kotlin, AWS, Kafka
AI focus
The role builds real-time marketplace systems and collaborates with Machine Learning teams; no direct AI development responsibility is specified.
Model-written summary · the original posting is authoritative