孙凯

Key Skills

Freelancer Overview

Technical Data Annotation and Quality Evaluation for Camera Data. Brings 10+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal, Proprietary Tooling, and Label Studio. Education includes Bachelor of Engineering, Beijing University of Chemical Technology (2013). AI-training focus includes data types such as Image, Computer Code, and Programming and labeling workflows including Evaluation, Rating, and RLHF.

Labeling Experience

Technical Data Annotator / RLHF Specialist (Freelance)

Label StudioRLHF

Engaged in Reinforcement Learning from Human Feedback (RLHF) annotation tasks focused on code and prompt evaluation. Used technical fluency in code and logical reasoning to rank, correct, and explain outputs for AI model alignment. Provided high-quality feedback to support fine-tuning of language models handling complex programming tasks. • Performed RLHF ranking and evaluation for AI-generated code and explanations. • Used Python and web-based tools for annotation workflows and QA. • Applied debugging and code correctness assessment to labeling tasks. • Contributed to Chain-of-Thought prompting and structured prompt evaluation for AI models.

2023 - Present

Technical Data Annotation and Quality Evaluation for Camera Data

Image

Evaluated the performance of camera algorithm outputs and performed quality checks on large volumes of annotated image data. Developed image-quality standards, analyzed outputs for subtle inconsistencies, and helped standardize labeling procedures with engineering teams. Used technical expertise to support validation and alignment tasks critical for improving algorithm accuracy. • Defined image-quality criteria and ensured consistency across annotation datasets. • Worked with Python for data preprocessing and batch QA automation. • Regularly assessed results for challenging edge cases and documented findings. • Collaborated with algorithm engineers to optimize model training through improved data quality.

2015 - 2023

Education

Work History