Key Skills

Software

AWS SageMaker

Data Annotation Tech

Scale AI

Top Subject Matter

No subject matter listed

Top Data Types

Document

Image

Text

Top Label Types

Prompt Response Writing SFT

Question Answering

Relationship

Segmentation

Tracking

Freelancer Overview

Eko Nurul Mustofa is an AI professional with experience in AI prompt engineering, data labeling, and data analysis. As an AI Prompt Engineer at Wish Travelers (WT) since May 2025, he creates and maintains AI prompts to enhance performance and accuracy, builds AI applications for task automation and workflow efficiency, integrates AI tools into existing systems, collaborates with teams to develop practical AI solutions, and monitors and updates AI systems for sustained effectiveness. Previously, as a Data Labelling Specialist at Eklipse.gg (October-December 2024), he ensured accurate annotations for machine learning models, collaborated on optimizing annotation processes, and utilized Python, LLM fine-tuning, RAG, and Python API usage to deliver high-quality datasets. Eko's internship experience includes a Data Intelligence role at SIRCLO (September 2023-February 2024), where he processed and presented data in dashboards, and collaborated with the Data Engineer team to ensure data availability using Redash, Superset, Phabricator, and Notion. As a Data Scientist Intern at PT. Erajaya Swasembada, Tbk. (February-June 2023), he collected, cleaned, and analyzed data from various platforms (marketplace, Salesforce, Google Analytics), extracted insights, and created visual dashboards using Ms. Excel, SQL, Google Looker Studio, Tableau, and Python.

Labeling Experience

Education

Work History