Mari B.

Key Skills

Software

Other

Top Subject Matter

AI customer acquisition for construction formwork industry & B2B Sales LLM

Social research data cleaning, Multimodal annotation & Map/Chart QA

E-commerce - Product Classification, Localization & Customer Support LLM

Top Data Types

Text

Image

Document

Top Task Types

Classification

Mapping

Question Answering

Bounding Box

Entity (NER) Classification

Point/Key Point

Text Generation

Text Summarization

Fine-tuning

Freelancer Overview

Results-driven professional with proven experience in AI data annotation, data auditing, and model optimization. Notably participated in training construction industry AI models, optimizing keyword systems to improve model accuracy by 126.1%. Proficient in establishing standardized workflows for large-scale data projects, formulating labeling criteria, and conducting rigorous data cleaning and anomaly detection. Combining a strong technical foundation in multi-modal data handling (Excel, Photoshop, Illustrator, CAD) with CET-6 bilingual communication skills, excels at translating complex data requirements into precise, high-quality annotations. Unique advantages include a background in high-accuracy research data management—achieving a 100% drawing verification rate and a 95% data audit pass rate at the Chinese Academy of Social Sciences—alongside rich cross-border commercial insight. This rare blend of meticulous data auditing skills, structured project management, and a deep understanding of industry-specific AI training needs makes a highly effective and adaptable asset for advanced AI training data operations.

Labeling Experience

AI data annotation workflow and model training support for customer acquisition models (foreign trade salesperson role, included AI training tasks)

TextClassification

Assisted in training AI customer acquisition models by optimizing keyword systems and company profiles to improve downstream accuracy. Contributed to defining and refining data labeling workflows, including label standard formulation, data cleaning, and anomaly detection support. Worked closely with AI clients and requirements processes to ensure model-ready labeled data inputs. • Optimized keyword systems for acquisition model training • Participated in label standard formulation for annotation workflows • Performed data cleaning and anomaly detection related to labeling quality • Supported client training for model improvement and accuracy gains

2024 - 2026

Research assistant intern supporting structured data cleaning and labeling for analytics

OtherMapping

Supported structured data cleaning and labeling for a social science research team by ensuring research datasets were accurate and audit-ready. Achieved 100% accuracy in map/chart plotting and maintained a 95% data audit pass rate during intern research activities. Assisted with transforming raw research materials into labeled, analysis-ready datasets. • Conducted interviews and organized raw research data for labeling • Performed structured data cleaning for labeling integrity • Supported map/chart plotting accuracy checks • Maintained high audit pass rate for labeled research data

2022 - 2022

Education

Work History