This is my profileContact via CazVidThis profile is written in Spanish
Jonathan
AI Data Annotator & QA Specialist
Contact
Competencies
Experiencia demostrada en MOS Excel 2023.
Experiencia demostrada en Java.
Experiencia demostrada en Python.
Education
Languages
Summary
AI Data Annotator & QA Specialist buscando nuevas oportunidades
Experience
AI Data Annotator & QA Specialist
Evaluated, annotated, and benchmarked complex text datasets to fine-tune LLMs. Performed Quality Assurance (QA) on model outputs to detect hallucinations, edge-case failures, bias, and safety compliance against strict, fast-changing guidelines.. Designed custom Python scripts to automate task logging, track metrics, and optimize personal workflow throughput during batch processing.. Maintained high accuracy standards while adapting seamlessly to weekly project requirement revisions.
Customer Service Representative
Managed high-stress customer inquiries in English, maintaining strict professionalism and resolving account or service disputes efficiently.. Delivered immediate problem resolution with empathy, leading to higher customer loyalty and retention.. Handled escalated calls and technical troubleshooting following standardized operational procedures under tight SLAs.