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A

Antonius Steven

AI Trainer — DataAnnotation

INDONESIA flag
Tangerang, Indonesia
IntermediateOther

Key Skills

Software

Other

Top Subject Matter

AI Safety and LLM Evaluation
Legal Services & Contract Review
Regulatory Compliance & Risk Analysis

Top Data Types

TextText
ImageImage
DocumentDocument

Top Task Types

No task types listed

Freelancer Overview

AI Trainer — DataAnnotation. Brings 5+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Bachelor of Engineering, International University Liaison Indonesia (2023). AI-training focus includes data types such as Text and labeling workflows including Evaluation and Rating.

Intermediate

Labeling Experience

AI Trainer — DataAnnotation

OtherText
As an AI Trainer at DataAnnotation, I contributed to AI research and safety projects through comprehensive text-based evaluations and prompt engineering. My responsibilities included designing diverse prompts, analyzing and rating model outputs, and simulating user interactions for quality control. I ensured safety and compliance by identifying harmful or inappropriate content in text-image related tasks. • Designed prompts and tested outputs to evaluate and improve large language models. • Conducted adversarial prompt engineering to stress-test AI model behavior. • Performed peer reviews to uphold quality and consistency standards across contributors. • Assessed the accuracy, clarity, and usefulness of AI-generated explanations in simulated user scenarios.

As an AI Trainer at DataAnnotation, I contributed to AI research and safety projects through comprehensive text-based evaluations and prompt engineering. My responsibilities included designing diverse prompts, analyzing and rating model outputs, and simulating user interactions for quality control. I ensured safety and compliance by identifying harmful or inappropriate content in text-image related tasks. • Designed prompts and tested outputs to evaluate and improve large language models. • Conducted adversarial prompt engineering to stress-test AI model behavior. • Performed peer reviews to uphold quality and consistency standards across contributors. • Assessed the accuracy, clarity, and usefulness of AI-generated explanations in simulated user scenarios.

2025 - Present

Education

I

International University Liaison Indonesia

Bachelor of Engineering, Aviation Engineering

Bachelor of Engineering
2019 - 2023

Work History

S

StraitsX

Data Analyst

Singapore
2024 - Present
F

Fazz

People Data Analytics Associate

Singapore
2023 - 2024