Senior Software Engineer - High growth start up Exp

Vermillion Analytics is seeking a Senior / Staff Software Engineer to build full-stack software for an AI-native fintech automating mortgage origination. The role focuses on AI agents, lending integrations, AWS infrastructure, and mentoring engineers.

Responsibilities:

• Building multi-step AI agents that customers use to automate their operations workflows
• Integrating third-party lending APIs for documents, automated underwriting and fraud prevention
• Re-architecting job processing infrastructure on AWS for reliability and observability
• Mentoring less experienced engineers

Requirements:

• 7+ years in software engineering, including at least 5 at Senior level
• Experience at a product-led tech company where software is the product (VC-backed startup, high-growth scale-up or FAANG)
• Strong, recent, hands-on TypeScript experience building complex systems
• Experience scaling high-throughput distributed systems on AWS, with Terraform
• Full-stack delivery from design through deployment across React, Node, GraphQL and Postgres
• A track record of 2+ years and progression within the same company
• A keen eye for security, since the platform handles highly sensitive personal data
• Able to work US hours from within the US
• New sponsorships are not available
• Experience with AI product development (evals, experiment design, dataset curation)
• Experience designing and scaling complex relational schemas
• A fintech background
• An SRE mindset focused on reliable, observable, low-toil infrastructure
• An active GitHub profile or side projects that show a builder mentality