Charles C.

Key Skills

Software

Doccano

Top Subject Matter

Educational Large Language Models

Top Data Types

Text

Image

Top Task Types

Prompt + Response Writing (SFT)

Classification

Entity (NER) Classification

Computer Programming/Coding

Function Calling

Freelancer Overview

Prompt Engineer – SFT Data Labeling and Prompt Engineering. Brings 1+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Master of Business Administration, Anhui University of Technology (2025) and Bachelor of Management, Anhui University of Finance and Economics (2021). AI-training focus includes data types such as Text and labeling workflows including Prompt + Response Writing (SFT).

Labeling Experience

Prompt Engineer – SFT Data Labeling and Prompt Engineering

TextPrompt + Response Writing (SFT)

As a Prompt Engineer at Zuoyebang, I constructed SFT (Supervised Fine-Tuning) training datasets for educational large language models. I created over 50,000 high-quality instruction-response pairs to improve model performance. I also built and optimized an automated data synthesis pipeline through prompt engineering. • Developed instruction-response pairs to train AI in educational tasks • Increased data generation efficiency through automation • Enhanced model accuracy on educational benchmarks by 15% • Reduced manual annotation costs by 40%

2025 - Present

Education

Work History