Back End Engineer - Underwriting

Pylon· Palo Alto / San Francisco, CA, USA

Posted October 29, 2026

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Experience
Not specified
Pay
$140K – $220K per year
Education
Not specified
Location
Palo Alto / San Francisco, CA, USA
Work mode
Hybrid
Job type
Full-time

About this role

Pylon builds the first vertically integrated API-driven digital mortgage platform turning origination into a single API for large originators. The Back End Engineer on Underwriting encodes regulatory guidelines into executable logic using DSLs and AI to automate underwriting.

What you will do

  • Encode natural language rules into code using DSLs and AI techniques
  • Work side-by-side with mortgage experts to understand nuance and exceptions
  • Design systems for precision with robust test coverage and failure modes
  • Help define new applications of AI in mortgage
  • Automate complex regulated mortgage processes

What the employer expects

  • Deeply curious
  • Want to own features from design through deployment and maintenance
  • Willing to put in the work to solve the hardest problems

Benefits

  • Medical, vision & dental
  • Unlimited PTO
  • Hardware allowance
  • Annual off-sites

Skills

  • TypeScript
  • NestJS
  • GraphQL
  • PostgreSQL
  • Temporal.io

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