Yiwei W.

Key Skills

Software

No software listed

Top Subject Matter

Technology

Credit risk prediction and ML scoring

Top Data Types

Image

Text

Computer Code Programming

Top Task Types

Fine-tuning

Freelancer Overview

Software Engineer II. Brings 11+ years of professional experience across complex professional workflows, research, and quality-focused execution. Education includes Master of Information Technology, The University of Sydney (2023) and Bachelor of Engineering (Honours), The University of New South Wales (2016). AI-training focus includes data types such as Computer Code and Programming and labeling workflows including Fine-tuning.

Labeling Experience

Full Stack Software Engineer (ML model development for credit risk scoring), LumiFinance — Sydney, Australia (Mar 2022–Present)

Fine-tuning

Built and deployed predictive machine-learning workflows to generate credit-risk scores from application data for downstream decisioning. Enabled model development using Python-based ML tooling and iterative evaluation to reduce processing time and improve accuracy. Designed the ML components to support production use cases where outputs are used as automated risk labels for applications. • Used Python and scikit-learn to develop and train a credit-risk scoring model • Implemented scoring logic to produce structured risk outputs per application • Tuned the pipeline to cut processing time by over 50% • Improved assessment accuracy for more reliable credit risk labeling

2022 - Present

Education

Work History