Biljana Valentirovic

Key Skills

Software

Toloka

Mindrift

Top Subject Matter

No subject matter listed

Top Data Types

Text

Video

Top Label Types

Question Answering

Text Generation

Translation Localization

Data Collection

Transcription

Text Summarization

Audio Recording

Freelancer Overview

I am an experienced AI Trainer and Data Annotation Specialist with over six years of hands-on work in data labeling, model evaluation, and prompt engineering for both NLP and image-based AI projects. My background includes annotating and curating large-scale datasets, providing QA testing, and delivering detailed feedback to optimize AI performance across platforms like ChatGPT, Mindrift, Bard, and Claude. I have collaborated with global teams on projects ranging from search engine evaluation and chatbot fine-tuning to e-commerce data categorization and safety compliance. Fluent in English and Serbian, I consistently ensure high-quality, accurate results and am adept at using industry-standard data labeling tools, always prioritizing data privacy and ethical standards in every project.

Labeling Experience

AI Trainer & Data Annotation Specialist

TolokaTextQuestion AnsweringText Generation

Dedicated AI Trainer and Data Annotation Specialist with over 6 years of experience in AI model evaluation, prompt engineering, and data annotation for NLP and image datasets. Skilled in IT system maintenance, QA testing, and multilingual communication. Proven ability to collaborate remotely with global teams and deliver accurate, high-quality results for AI projects.

Dedicated AI Trainer and Data Annotation Specialist with over 6 years of experience in AI model evaluation, prompt engineering, and data annotation for NLP and image datasets. Skilled in IT system maintenance, QA testing, and multilingual communication. Proven ability to collaborate remotely with global teams and deliver accurate, high-quality results for AI projects.

2023 - 2025

Empowering AI Systems Through Human Insight

MindriftVideoText SummarizationTranslation Localization

Dedicated AI Trainer and Data Annotation Specialist with over 6 years of experience in AI model evaluation, prompt engineering, and data annotation for NLP and image datasets. Skilled in IT system maintenance, QA testing, and multilingual communication. Proven ability to collaborate remotely with global teams and deliver accurate, high-quality results for AI projects

Dedicated AI Trainer and Data Annotation Specialist with over 6 years of experience in AI model evaluation, prompt engineering, and data annotation for NLP and image datasets. Skilled in IT system maintenance, QA testing, and multilingual communication. Proven ability to collaborate remotely with global teams and deliver accurate, high-quality results for AI projects

2023

Education

Work History