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Rusti Rusti

Rusti Rusti

PhD in Mathematics with Expertise in AI Training & Data Evaluation

Indonesia flagMajalengka, Indonesia
$20.00/hrExpertAws SagemakerCVATData Annotation Tech

Key Skills

Software

AWS SageMakerAWS SageMaker
CVATCVAT
Data Annotation TechData Annotation Tech
DoccanoDoccano
Google Cloud Vertex AIGoogle Cloud Vertex AI
LabelboxLabelbox
Label StudioLabel Studio
ProdigyProdigy
RoboflowRoboflow
Snorkel AISnorkel AI

Top Subject Matter

No subject matter listed

Top Data Types

Computer Code ProgrammingComputer Code Programming
ImageImage
TextText

Top Task Types

Bounding Box
Classification
Entity Ner Classification
Prompt Response Writing SFT
RLHF

Freelancer Overview

PhD in Mathematics with over 15 years of combined experience in academia, applied research, and AI training. Skilled in data labeling, annotation, and model QA evaluation across multiple domains including text, image, and audio. Proven ability to design and apply scoring rubrics, refine datasets, validate model outputs, and deliver structured feedback for improving AI performance. Experienced with leading AI training workshops and bootcamps, mentoring participants, and building learning pathways that bridge theory with real-world AI applications. Recognized for strong analytical foundations, attention to detail, and adaptability across diverse industries, from scientific QA to machine learning model evaluation. Proficient in tools such as Label Studio, CVAT, Doccano, Roboflow, and enterprise platforms like Labelbox, as well as programming in Python, R, and MATLAB. With advanced English proficiency (C1+), extensive teaching experience, and a global research background, I bring both academic rigor and practical expertise to ensure the highest quality in AI training and data evaluation projects.

ExpertEnglishIndonesianChinese Mandarin

Labeling Experience

Label Studio

LLM Evaluation and QA for Mathematics and Scientific Text

Label StudioTextEntity Ner ClassificationClassification
Conducted large-scale LLM QA and data annotation for mathematics and scientific reasoning tasks. Responsibilities included evaluating AI-generated answers, designing and applying scoring rubrics, and performing entity extraction, classification, and QA alignment checks. Annotated thousands of text samples across problem-solving, step-by-step reasoning, and scientific explanations. Ensured quality and consistency through double-review processes, peer audits, and reference validation. Provided prompt and response refinements to improve model accuracy and learning outcomes.

Conducted large-scale LLM QA and data annotation for mathematics and scientific reasoning tasks. Responsibilities included evaluating AI-generated answers, designing and applying scoring rubrics, and performing entity extraction, classification, and QA alignment checks. Annotated thousands of text samples across problem-solving, step-by-step reasoning, and scientific explanations. Ensured quality and consistency through double-review processes, peer audits, and reference validation. Provided prompt and response refinements to improve model accuracy and learning outcomes.

2021 - 2023
CVAT

Image Annotation and Object Detection for Computer Vision

CVATImageBounding BoxSegmentation
Worked on a large-scale image labeling project focused on object detection and classification for computer vision applications. Tasks included creating bounding boxes and segmentation masks for thousands of images, ensuring pixel-level accuracy and consistency across datasets. Applied classification labels for multiple object categories and validated outputs against project guidelines. Maintained high quality through cross-review with peers, iterative feedback, and QC audits.

Worked on a large-scale image labeling project focused on object detection and classification for computer vision applications. Tasks included creating bounding boxes and segmentation masks for thousands of images, ensuring pixel-level accuracy and consistency across datasets. Applied classification labels for multiple object categories and validated outputs against project guidelines. Maintained high quality through cross-review with peers, iterative feedback, and QC audits.

2020 - 2021

Education

N

National University of Singapore

Doctor of Philosophy (PhD), Mathematics

Doctor of Philosophy (PhD)
2003 - 2007
I

Institut Teknologi Bandung

Master of Science, Applied Mathematics

Master of Science
2000 - 2002

Work History

U

Universitas Majalengka

Associate Professor

Majalengka
2008 - 2018
S

Singapore Polytechnic

Postdoctoral Researcher

Singapore
2007 - 2008