Senior Software Engineer, GenAI Platform

Company: Upstart

About the Company: Upstart is an AI lending platform that uses machine learning to improve access to affordable credit. A publicly traded company ($UPST), Upstart partners with banks and credit unions to provide personal loans, auto loans, and home equity lines of credit, using AI to go beyond traditional FICO scores.

Job Category: Software Engineering / GenAI / AI Platform / FinTech

Contract Type: Full-Time, Permanent

Location: Remote — USA

Salary: $164,000–$226,000 base

Application Link: https://www.upstart.com/careers (search "Senior Software Engineer, GenAI Platform")

Job Description: You'll work on Upstart's GenAI Platform team, building the infrastructure and tooling that enables AI-powered products across Upstart's lending and risk platform. This is infrastructure-heavy AI engineering work requiring both ML depth and production systems expertise.

Key Responsibilities:

• Design and build GenAI platform services and infrastructure enabling AI-powered features across Upstart's product suite
• Build LLM integration infrastructure, RAG systems, prompt management tooling, and model evaluation frameworks
• Collaborate with ML engineers, data scientists, and product teams to turn AI capabilities into production features
• Ensure GenAI platform services are reliable, observable, cost-efficient, and scalable
• Evaluate new AI/ML techniques and frameworks for applicability to Upstart's platform
• Contribute to internal developer experience for teams building on the GenAI platform

Requirements:

• 6+ years software engineering experience with strong Python or Go backend expertise
• Production experience integrating LLMs, RAG systems, or AI infrastructure
• Strong systems engineering background — distributed systems, cloud infrastructure, APIs
• Experience at a fintech, financial services, or high-growth SaaS company preferred
• Excellent collaboration and communication skills for cross-functional work

Benefits: Health/dental/vision, 401K, equity, paid parental leave, flexible PTO, home office support.