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Osbaldo Mejia

Osbaldo Mejia

LLM Evaluation and AI image, video, audio annotation in English & Spanish

USA flagPort Saint Lucie, Usa
$19.00/hrIntermediateAppenScale AIOther

Key Skills

Software

AppenAppen
Scale AIScale AI
Other

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
ImageImage
VideoVideo

Top Task Types

Classification
Evaluation Rating
Prompt Response Writing SFT
RLHF

Freelancer Overview

My main focus experience is with Data Annotation where I was involved in placing bounding boxes, generated images using prompts, removed objects and people with AI, changed objects with AI, used my creativity to simulate chats between a human and an AI assistant, Tagged objects and images or videos, extracted patterns from images, and evaluated AI text to video. I have also contributed to an LLM RLHF project which I learned how to evaluate responses for Safety, Completeness, Accuracy, and Context which I was completely new to until that point. During that time I have Evaluated AI Images, Audio, And Video for Quality, Prompt to outcome Accuracy, or other issues such as distortion, morphing or artifacts. I was a Search Engine Evaluator where I evaluated search results for best relevance, localization, quality, and safety. I learned about the search engine evaluation field where humans evaluate results to make search engines more accurate to what the user is looking for. As a Search Engine Evaluator I also did tasks where I found bugs or made sure buttons, webpages and features would work as intended.

IntermediateEnglishSpanish

Labeling Experience

No Data Labeling experience added

Osbaldo M. hasn’t added any AI Training or Data Labeling experience to their OpenTrain profile yet.

Education

C

Coral Springs High School

High School Diploma, General High School Curriculum

High School Diploma
2016 - 2016

Work History

R

RWS

Ai Annotator

Port Saint Lucie
2025 - Present
A

Appen / Crowdgen

Search Engine Evaluator

Pompano Beach
2023 - 2025