Mustafa Yetiş

Key Skills

Software

Toloka

Top Subject Matter

Search Engine/Information Retrieval

AI/Natural Language Processing

Top Data Types

Text

Top Task Types

Classification

Freelancer Overview

Data Annotation & Search Quality Specialist. Core strengths include Toloka, Internal, and Proprietary Tooling. Education includes Bachelor of Science, Sakarya University (2020). AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Classification.

Labeling Experience

Data Annotation & Search Quality Specialist

TolokaText

As a Data Annotation & Search Quality Specialist at Yandex, I annotated and labeled large textual datasets to help train and improve AI and machine learning models. I played a central role in enhancing search engine quality by meticulously analyzing search results. My feedback identified areas of improvement, contributing directly to better model performance. • Provided detailed evaluations and actionable quality assessments on search results. • Supported iterative improvements by flagging content inaccuracies and misclassifications. • Collaborated with data science teams to refine labeling protocols. • Maintained high annotation accuracy across large data volumes.

As a Data Annotation & Search Quality Specialist at Yandex, I annotated and labeled large textual datasets to help train and improve AI and machine learning models. I played a central role in enhancing search engine quality by meticulously analyzing search results. My feedback identified areas of improvement, contributing directly to better model performance. • Provided detailed evaluations and actionable quality assessments on search results. • Supported iterative improvements by flagging content inaccuracies and misclassifications. • Collaborated with data science teams to refine labeling protocols. • Maintained high annotation accuracy across large data volumes.

2024 - 2025

Data Annotation & Website Design Assistant

TextClassification

During my tenure as Data Annotation & Website Design Assistant at Co-one, I performed data labeling and annotation for AI and machine learning projects. I was responsible for preparing and curating text datasets used for algorithmic training. My duties included ensuring the quality and consistency of labeled data for client solutions. • Participated in text classification for natural language processing tasks. • Assisted in integrating annotated data with machine learning pipelines. • Applied internal/company-proprietary tools for data preparation. • Worked with teams to align annotation practices with project goals.

During my tenure as Data Annotation & Website Design Assistant at Co-one, I performed data labeling and annotation for AI and machine learning projects. I was responsible for preparing and curating text datasets used for algorithmic training. My duties included ensuring the quality and consistency of labeled data for client solutions. • Participated in text classification for natural language processing tasks. • Assisted in integrating annotated data with machine learning pipelines. • Applied internal/company-proprietary tools for data preparation. • Worked with teams to align annotation practices with project goals.

2023 - 2024

Education

Work History