Dennis U.

Key Skills

Software

Mindrift

Other

Remotasks

Appen

Top Subject Matter

AI search

recommendation systems

and e-commerce taxonomy QA

Top Data Types

Text

Audio

Image

Top Task Types

Transcription

Data Collection

Segmentation

Freelancer Overview

Data annotator/QA expert at Mindrift (Data annotation and AI response evaluation). Brings 7+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Mindrift and Other. Education includes Bachelor of Science, Godfrey Okoye University (2022). AI-training focus includes data types such as Text and Audio and labeling workflows including Evaluation, Rating, and Transcription.

Labeling Experience

Freelance transcription and written content services via Upwork

OtherAudioTranscription

Completed transcription work by converting spoken content into written text for client materials. Transcribed a range of audio sources including conversations, political interviews, and academic materials. Provided deliverables aligned to client requirements for text accuracy and completeness. • Transcribed conversations and interview recordings for clients. • Transcribed political interview content and other interview materials. • Transcribed academic materials for client use. • Produced written transcripts as requested per assignment guidelines.

2020 - Present

Data annotator/QA expert at Mindrift (Data annotation and AI response evaluation)

MindriftText

Served as a data annotator and QA expert evaluating search and recommendation outputs to determine which pair-wise result was better. Reviewed products on shopping websites to verify their alignment with the specified categories. Compared AI responses against prompts to ensure safety, helpfulness, and factuality. • Performed pair-wise evaluation of search engine results to improve algorithms and recommendation systems. • Validated shopping-site product alignment to predefined categories. • Assessed AI responses for safety, relevance, and factual correctness versus the given prompt. • Reviewed other annotators’ submissions and provided constructive feedback to improve quality.

2023 - 2025

Education

Work History