Wang K.

Key Skills

Software

Label Studio

CVAT

Top Subject Matter

Finance / Banking

E-commerce / Retail

Technology / Enterprise Software

Top Data Types

Document

Image

Text

Top Task Types

Computer Programming/Coding

RLHF

Entity (NER) Classification

Classification

Red Teaming

Evaluation/Rating

Prompt + Response Writing (SFT)

Data Collection

Fine-tuning

Freelancer Overview

Senior Java backend engineer (16+ years) with hands-on production AI experience: built and shipped AI invoice recognition in ERP finance (document/OCR fields, validation, audit). Strong domain expertise in finance (AR/AP, invoicing), e-commerce membership/loyalty, and O2O order systems. Daily user of Cursor, LangChain, Python, and FastAPI. Best fit for LLM evaluation, document AI QA, finance/e-commerce domain review, prompt testing, and annotation QA—not only manual bounding-box labeling. Available 40 hrs/week, remote (UTC+8).

Labeling Experience

Technical Manager, Endpoint Network (AI invoice recognition in ERP finance, Jul 2024 - Present)

OtherImageEntity (NER) Classification

Built and deployed an AI invoice recognition capability for ERP finance to reduce manual processing of AR/AP invoicing workflows. Implemented end-to-end LLM/OCR-style pipelines with validation and production-safe state handling. Operated as technical lead for data governance and production readiness of the AI system. • DataType inferred as Document due to invoice/OCR content processing. • Focus on OCR/invoice AI integration rather than manual annotation. • Ensured safe production behavior using idempotency, audit logs, and state machines. • Performance and reliability improvements via Redis/MQ/JVM tuning.

2024 - Present

Education

Work History