Reanna Mertz
COLUMBUS,OH
Summary
Analytical professional with experience developing annotation guidelines, evaluating LLM outputs, and supporting model improvement efforts. Known for strong communication, collaboration, and careful data review. Brings a process-focused approach to improving accuracy and consistency across complex datasets.
Overview
8
8
years of professional experience
Work History
Data Domain Architect Analyst
JPMorgan Chase
COLUMBUS, OH
07.2024 - Current
- Labeled thousands of customer call transcripts to support evaluation dataset development and improve model accuracy across products.
- Developed customer intent guidelines to enable consistent categorization of calls by labelers.
- Used SQL and Alteryx to prepare and validate large datasets.
- Reviewed LLM outputs daily to identify failure points, enhancing prompt engineering skills.
- Presented analysis findings and actionable recommendations to leadership for informed decision-making.
- Worked with product and data modeling teams to refine models and prioritize fixes.
Loan Origination Specialist IV
JPMorgan Chase
Columbus, Ohio
09.2022 - 07.2024
- Managed 50+ deal pipeline, enhancing loan processing efficiency.
- Collaborated with underwriters to ensure loan files met business requirements.
- Prepared loan packages for prompt booking and funding.
- Verified loan documents for accuracy and completeness to meet processing standards.
Sr. Loan Processor
First Home Bank
New Albany, OH
09.2020 - 05.2022
- Managed approximately 30 mortgage loans per month, ensuring compliance and accurate documentation.
- Collaborated with loan officers to streamline client paperwork, facilitating efficient closings.
- Reviewed customer readiness for successful home loan processing.
- Partnered with stakeholders to ensure timely closing and funding of loans.
Crew Member
Smoked on High BBQ
Columbus, Ohio
08.2018 - 08.2020
- Assisted customers at counter service station, ensuring friendly and efficient order handling to enhance customer experience.
- Processed transactions in Toast POS system accurately and efficiently.
- Handled incoming calls and entered phone orders accurately, facilitating smooth service delivery.
- Assisted with catering for weddings and events, supporting setup and service.
Education
Bachelor of Science - Accounting
Western Governors University
Salt Lake City, UT12-2027
MBA -
Southern New Hampshire University
Hooksett, NH03-2024
Bachelor of Science - Secondary English Education
The Ohio State University
Columbus, OH05-2020
Skills
- Data labeling and annotation
- Dataset curation and quality assurance
- Annotation guideline development
- Transcript analysis
- Customer intent analysis
- SQL
- Alteryx
- Data preparation and validation
- LLM output evaluation
- Model accuracy improvement
- Prompt engineering
- Microsoft Excel
- Microsoft Copilot
- ChatGPT
Timeline
Data Domain Architect Analyst
JPMorgan Chase
07.2024 - Current
Loan Origination Specialist IV
JPMorgan Chase
09.2022 - 07.2024
Sr. Loan Processor
First Home Bank
09.2020 - 05.2022
Crew Member
Smoked on High BBQ
08.2018 - 08.2020
Bachelor of Science - Accounting
Western Governors University
MBA -
Southern New Hampshire University
Bachelor of Science - Secondary English Education
The Ohio State University