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Penta Josua Putra Sinaga

Penta Josua Putra Sinaga

AI Data Trainer & Annotator (Freelance)

INDONESIA flag
Jakarta, Indonesia
$10.00/hrIntermediateImeritMicro1Mercor

Key Skills

Software

iMeritiMerit
Micro1
MercorMercor
SuperAnnotateSuperAnnotate
TolokaToloka
AppenAppen
Data Annotation TechData Annotation Tech

Top Subject Matter

AI/ML Training
Multi-modal Data Annotation

Top Data Types

TextText
VideoVideo
ImageImage

Top Task Types

Fine Tuning
Bounding Box
Question Answering
RLHF
Data Collection
Evaluation Rating
Text Summarization
Text Generation
Object Detection
Classification
Segmentation
Function Calling
Polygon
Transcription

Freelancer Overview

AI Data Trainer & Annotator (Freelance). Brings 17+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Bachelor of Science, Institut Teknologi Harapan Bangsa Bandung (2009). AI-training focus includes data types such as Text, Audio, and Image and labeling workflows including Fine-tuning.

IntermediateIndonesianEnglish

Labeling Experience

AI Data Trainer & Annotator (Freelance)

TextRLHF
• Curated and annotated diverse, multi-modal datasets—including text, audio, and images—to support the training and fine-tuning of machine learning and Generative AI models. • Conducted rigorous data quality assurance, delivering high-accuracy transcriptions and precise categorization essential for robust AI training pipelines. • Leveraged hands-on experience with raw data structures to inform and improve the architectural design of back-end data processing and ingestion systems.

• Curated and annotated diverse, multi-modal datasets—including text, audio, and images—to support the training and fine-tuning of machine learning and Generative AI models. • Conducted rigorous data quality assurance, delivering high-accuracy transcriptions and precise categorization essential for robust AI training pipelines. • Leveraged hands-on experience with raw data structures to inform and improve the architectural design of back-end data processing and ingestion systems.

2025 - Present

Education

I

Institut Teknologi Harapan Bangsa Bandung

Bachelor of Science, Information Technology

Bachelor of Science
2005 - 2009

Work History

B

Bank Danamon Indonesia

Senior Audit Data Analytics

Jakarta
2026 - Present
C

CIMB Niaga

Audit Data Engineer Senior Specialist

Tangerang
2021 - 2026