Usman A.

Key Skills

Software

Mindrift

Toloka

Appen

Top Subject Matter

Large Language Model (LLM) Evaluation

Prompt Engineering

Red-teaming Domain Expertise

Top Data Types

Text

Image

Document

Top Task Types

Polygon

Classification

Bounding Box

Object Detection

Freelancer Overview

AI Trainer & Data Annotator. Brings 3+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Mindrift and Toloka. Education includes Professional Certificate, Coursera (2024) and High School Diploma, Gifted Prime School (2023). AI-training focus includes data types such as Text and Image and labeling workflows including Evaluation, Rating, and Polygon.

Labeling Experience

AI Trainer & Data Annotator

MindriftText

As an AI Trainer & Data Annotator at Mindrift (Toloka AI), I evaluated and rated LLM-generated responses to enhance language model capabilities. I conducted adversarial red-teaming, authored gold standard responses, and engaged in complex prompt and response writing. My work focused on both technical tasks and language-based evaluation. • Evaluated AI model output for helpfulness, honesty, and harmlessness (HHH) • Authored gold-standard reference responses for prompt completion tasks • Conducted red-teaming for prompt injection and vulnerability identification • Classified and reviewed code snippets for correctness and bug identification

2024 - Present

Data Labeling Specialist

TolokaImagePolygon

As a Data Labeling Specialist at Toloka / CrowdGen, I performed multi-modal data annotation across annotation of images, videos, audio, and textual sentiment. I contributed to computer vision projects using polygon and key-point markings for over 5,000 images and videos. My work also included transcription and NLP tasks as well as search relevance evaluation. • Annotated images and videos with polygons and key points for object detection • Labeled and transcribed audio datasets for NLP and sentiment analysis • Evaluated search engine results for relevance and intent • Maintained a platform quality score above 95% for high-priority tasks

2022 - 2023

Education

Work History