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A
Aj Valdez

Aj Valdez

Data Annotation and Quality review

Canada flagToronto, Canada
$14.00/hrIntermediateOther

Key Skills

Software

Other

Top Subject Matter

AI/LLM Training

Top Data Types

AudioAudio
ImageImage
TextText
VideoVideo

Top Task Types

Bounding BoxBounding Box
Question AnsweringQuestion Answering
Evaluation/RatingEvaluation/Rating
Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)
TranscriptionTranscription
RLHFRLHF

Freelancer Overview

Data Annotation and Quality review. Core strengths include Other. AI-training focus includes data types such as Image and Text and labeling workflows including RLHF, Evaluation, and Rating.

IntermediateEnglish

Labeling Experience

Data Annotation & Quality Reviewer

OtherImageBounding BoxQuestion Answering
Annotated and evaluated multimodal data (images and text) to support reinforcement learning from human feedback (RLHF) pipelines for large language models. • Performed preference ranking and quality review tasks, ensuring annotations followed strict, structured guidelines with high accuracy and consistency. • Identified ambiguities, edge cases, and low-quality inputs, flagging issues to improve dataset reliability and model training outcomes. • Maintained high attention to detail across fast, short-form tasks while meeting productivity and quality benchmarks.

Annotated and evaluated multimodal data (images and text) to support reinforcement learning from human feedback (RLHF) pipelines for large language models. • Performed preference ranking and quality review tasks, ensuring annotations followed strict, structured guidelines with high accuracy and consistency. • Identified ambiguities, edge cases, and low-quality inputs, flagging issues to improve dataset reliability and model training outcomes. • Maintained high attention to detail across fast, short-form tasks while meeting productivity and quality benchmarks.

2025 - 2026

Education

Y

York University

Bachelor of Science, Computer Science

Bachelor of Science
2021 - 2025

Work History

S

Shoppers Drug Mart

Merchandiser

Toronto
2022 - Present