Justus E.

Key Skills

Software

Appen

Clickworker

Data Annotation Tech

Top Subject Matter

Data Science/Analytics

Software engineering

Artificial Intelligence and Machine Learning

Top Data Types

Document

Image

Computer Code Programming

Text

Top Task Types

Classification

Fine-tuning

Computer Programming/Coding

Freelancer Overview

Data specialist with hands-on experience in dataset preparation, quality assurance, and model-output evaluation for AI training pipelines. Proficient in Python, data cleaning, and statistical validation, with practical exposure to labeling workflows and rubric-based assessment. Comfortable working in annotation tools and delivering structured feedback that improves model performance. Clear communicator with experience translating technical requirements into precise labeling instructions for both technical and non-technical stakeholders.

Labeling Experience

Electric vehicle data analysis

TextComputer Programming/Coding

Collected and preprocessed a large, real-world EV registration dataset from data.gov, performing rigorous data cleaning to resolve inconsistencies, missing values, and outliers then Conducted exploratory data analysis to identify trends in EV adoption rates, geographic distribution, and manufacturer market share, translating statistical findings into actionable insights.

2026 - 2026

Education

Work History