Cristopher Wenquan

Key Skills

Software

Label Studio

Top Subject Matter

Nlp Domain Expertise

Mobile AI

Model Evaluation

Top Data Types

Text

Image

Top Task Types

Prompt Response Writing SFT

Freelancer Overview

Senior AI QA & iOS Engineer – Palmetto Digital Solutions. Brings 9+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal, Proprietary Tooling, and Label Studio. Education includes Doctor of Philosophy, University of South Carolina (2018) and Master of Science, Clemson University (2014). AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Prompt + Response Writing (SFT).

Labeling Experience

Senior AI QA & iOS Engineer – Palmetto Digital Solutions

Text

As Senior AI QA & iOS Engineer, I designed and executed workflows for evaluating AI outputs for NLP-based features. I led human-in-the-loop validation to ensure labeled data quality and built tools to improve annotation and validation processes. My responsibilities included dataset validation, annotation quality track, and supporting labeling efficiency increase of 35%.• Developed scalable AI evaluation pipelines for NLP.• Conducted ranking, classification, and correction of AI-generated text outputs.• Built internal tools for dataset annotation monitoring and validation.• Performed quality assurance and calibration for annotators and team reviews.

As Senior AI QA & iOS Engineer, I designed and executed workflows for evaluating AI outputs for NLP-based features. I led human-in-the-loop validation to ensure labeled data quality and built tools to improve annotation and validation processes. My responsibilities included dataset validation, annotation quality track, and supporting labeling efficiency increase of 35%.• Developed scalable AI evaluation pipelines for NLP.• Conducted ranking, classification, and correction of AI-generated text outputs.• Built internal tools for dataset annotation monitoring and validation.• Performed quality assurance and calibration for annotators and team reviews.

2021 - Present

AI Data Trainer & Prompt Engineer (Freelance / Remote)

Label StudioTextPrompt Response Writing SFT

As an AI Data Trainer and Prompt Engineer, I created and refined high-quality prompt-response pairs for training large language models. My work involved annotation, evaluation, ranking, and error identification in generated text across educational and technical domains. I collaborated with distributed teams to optimize prompts and improve model alignment and usability.• Annotated datasets in conversational AI, education, and technical content.• Evaluated, ranked, and audited AI model outputs using strict guidelines.• Conducted bias and hallucination detection plus data corrections.• Authored and optimized reusable prompt templates and evaluation tasks.

As an AI Data Trainer and Prompt Engineer, I created and refined high-quality prompt-response pairs for training large language models. My work involved annotation, evaluation, ranking, and error identification in generated text across educational and technical domains. I collaborated with distributed teams to optimize prompts and improve model alignment and usability.• Annotated datasets in conversational AI, education, and technical content.• Evaluated, ranked, and audited AI model outputs using strict guidelines.• Conducted bias and hallucination detection plus data corrections.• Authored and optimized reusable prompt templates and evaluation tasks.

2020 - Present

Education

Work History