Residential Mortgage Loan Underwriter (Contract)

Role Overview 

As a Part‑Time Residential Mortgage Loan Underwriter Consultant at JazzX AI, you will leverage your deep expertise in underwriting to build AI-technology to support mortgage underwriting activities. You will work closely with engineering, and product teams to convert real-world underwriting decisions into robust AI logic. 

Contract Duration: 6 months (potential to extend up to 12 months) 

Key Responsibilities:

• Underwriting & File Assessment
  
  
  
  • Underwrite a variety of residential mortgage loan files (purchase, rate‑term refinance, cash‑out refinance) per Fannie Mae DU and Freddie Mac LP guidelines.
  
  
  • Document underwriting rationale, risk profiles, and exception handling. 
  
  
  
  

• Process Mapping & Rule Development
  
  
  
  • Deconstruct end-to-end underwriting workflows—from borrower qualification and income/asset verification to AUS findings and final approval.
  
  
  • Identify critical decision points and edge cases crucial for AI modeling. 
  
  
  
  

• Model Validation & Feedback
  
  
  
  • Blind-test AI-generated underwriting recommendations against manual assessments.
  
  
  • Provide granular feedback to engineering teams to fine-tune decision rules and confidence thresholds. 
  
  
  
  

• Knowledge Transfer & Training
  
  
  
  • Create clear, actionable guides on complex topics (e.g., compensating factors, manual AUS overrides, GSE compliance).
  
  
  • Host virtual workshops or Q&A sessions to transfer domain knowledge to cross-functional teams. 
  
  
  
  

Required Qualifications 

• Experience: 4–10 years in residential mortgage underwriting at a senior or specialist level.


• GSE Mastery: Deep, hands-on knowledge of Fannie Mae DU and/or Freddie Mac LP guidelines.


• Analytical Acumen: Proven ability to assess borrower credit, income, assets, and collateral with accuracy and consistency.


• Communication: Exceptional verbal and written skills to articulate underwriting logic and decision processes.


• Consulting Approach: Comfortable in an iterative environment, providing structured feedback to product and engineering teams. 

Preferred Qualifications 

• Experience at large retail or independent mortgage lenders (e.g., Wells Fargo, Rocket Mortgage, Chase).


• Background in manual underwriting, AUS overrides, or secondary market delivery.


• Familiarity with post-closing QC, servicing reviews, and secondary market delivery processes.


• Prior involvement in technology or automation initiatives within mortgage operations. 

Why Join JazzX AI:

What draws people to JazzX AI is the opportunity to build something truly foundational.

We are at the beginning of a new era — one where enterprise systems will no longer be static tools, but dynamic collaborators that learn, reason, and evolve alongside the people who use them. At JazzX AI, you’ll help build a platform that redefines how work happens in the AGI era.

JazzX AI brings together vision, deep technology, and purpose. This is not about experimenting with AI features; it’s about turning the promise of AGI into practical, auditable, and human-aligned systems that enterprises can trust and rely on at scale. The work here directly impacts productivity, efficiency, and decision-making in complex, real-world environments.

If you’re motivated by building systems that matter — systems that combine intelligence with responsibility — JazzX AI offers the chance to do that work at a deeper level, with real ownership and lasting impact.