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Map end-to-end mortgage origination workflows and systems to provide the foundation for AI training and measurement. Perform quality assurance on AI agent output and build edge-case datasets to improve system reliability.
Requires 5+ years of operational experience in mortgage originations across various loan types and hands-on expertise with LOS platforms like Encompass or Empower. Must be technically proficient in reading API documentation and working with JSON/XML payloads.
Kastle is building AI operating system for consumer lending, starting with mortgage. We work with some of America's largest mortgage lenders, helping them scale their contact center and compliance operations using AI-driven voice agents. We've processed over $1 billion in transactions and are backed by Y Combinator, Commerce Ventures, and executives from Snapdocs, Google, and WePay.
You'll be our source of truth for mortgage origination workflows and systems. Every workflow, system, and customer touchpoint from lead through closing. You'll turn deep origination expertise and the real mechanics of platforms like Encompass and Empower into the maps, documentation, and quality standards our AI is built, trained, and measured against. You'll work shoulder-to-shoulder with engineering and product to make our agents match the judgment of a top human expert on a live file. In this role you can expect to:
Map mortgage originations end to end — every workflow across origination, processing, and closing, every customer touchpoint, and every system a lender uses (LOS, POS, PPE, AUS, credit, verifications, doc prep, e-close), at a fidelity engineers and product can build directly against.
Run quality assurance and error triage — review live agent output, catch what's wrong, and feed structured corrections back to engineering to drive measurable quality improvements.
Build the edge-case dataset that reliable AI is built on — TRID/disclosure timing, AUS interpretation, and agency-guideline handling, especially the non-standard cases that break a deployment.
Be the domain expert the engineering, product, and deployment teams rely on — including in the room at customer go-lives.
You have 5+ years in mortgage originations in an operational capacity — processor, underwriter, or originator — across multiple loan types (conforming, jumbo, non-QM, FHA/VA), and you can work through a messy file with precision.
You have hands-on experience with loan origination systems — Encompass, Empower, or similar — including how they're configured and how data moves between them, not just as an end-user.
You are technically adept: comfortable reading API documentation, reasoning about data schemas, and working with JSON/XML payloads. Familiarity with tools like Postman is a big plus.
You are curious and relentless about identifying, triaging, and solving problems big or small, and detail is where you live.
You're energized by building technology that captures and scales your own expertise — and excited to join an early, fast-moving team building something industry-changing.
Opportunity to work with a world class team building a generational company that will redefine how every loan in America is made and managed
Competitive Compensation + Meaningful Equity
Robust medical, vision, & dental coverage
401(K) plan offering
Paid Company Meals
Company offsites to get to know the team
AI agents for consumer lending
Kastle is a workflow automation tool for mortgage lenders and servicers. Our cutting-edge technology automates sales, collections, and customer service interactions, enhancing operational efficiency and customer satisfaction. By reducing the reliance on human call center agents, Kastle allows mortgage companies to manage high call volumes, qualify leads effectively, and drive portfolio retention and origination
Offices: 185 Channel St, 423, San Francisco, California 94158, US
Based on 4993 listings with disclosed salaries, most technology jobs in San Francisco, CA pay between $130k–$280k per year. Individual offers vary with seniority, company size, and specialization.
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