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S
Sake J.

Sake J.

AI Data Labelling Specialist (Freelance / Contract) — Various AI & Tech Companies (2023.03–Present)

China flagN/A, China

Key Skills

Software

Don't disclose

Top Subject Matter

Computer vision / machine learning data annotation
Online education content QA and question recording
Legal Services & Contract Review

Top Data Types

ImageImage
TextText
DocumentDocument

Top Task Types

Object DetectionObject Detection

Freelancer Overview

AI Data Labelling Specialist (Freelance / Contract) — Various AI & Tech Companies (2023.03–Present). Brings 6+ years of professional experience across legal operations, contract review, compliance, and structured analysis. Core strengths include Don't disclose. Education includes Bachelor of Engineering, China Agricultural University (2022). AI-training focus includes data types such as Image and Text and labeling workflows including Object Detection, Evaluation, and Rating.

Labeling Experience

AI Data Labelling Specialist (Freelance / Contract) — Various AI & Tech Companies (2023.03–Present)

Don't discloseImageImageObject DetectionObject Detection

Performed large-scale image annotation and data labeling to support computer vision and machine learning model training with 98%+ accuracy. Conducted quality audits on annotated datasets to find and correct labeling inconsistencies and improve overall data quality. Collaborated with project teams to refine labeling guidelines and annotation standards for more robust training datasets. • Multi-label classification labeling for complex image tasks • Object bounding box annotation and semantic segmentation • Text entity recognition when required by project scope • Maintained detailed documentation and provided feedback to improve annotation efficiency and tooling

2023 - Present

Online Question Recording Assistant — Zuoyebang (作业帮) (2024.03–2025.04)

Don't discloseTextText

Recorded and explained college-level English test questions for a mobile education app to help students improve exam performance. Reviewed and validated question content to ensure high pass rates and alignment with curriculum standards. Enhanced question metadata and performed spot checks on published content to maintain quality consistency. • Question content review and validation for accuracy • Metadata enhancement for improved organization and retrieval • Spot checks to ensure publishing quality • Ensuring consistency with curriculum standards and learning objectives

2024 - 2025

Education

C

China Agricultural University

Bachelor of Engineering, Civil Engineering

Bachelor of Engineering
2018 - 2022

Work History

Z

Zuoyebang

Online Question Recording Assistant

N/A
2024 - 2025
H

Hongxing Subdistrict Office

Community Service Intern

N/A
2020 - 2020