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Richard Maina

Richard Maina

Multimodal AI Annotator | Text, Vision, Audio & LLM Task Specialist

USA flagNew York, Usa
$30.00/hrExpertAws SagemakerAppenCVAT

Key Skills

Software

AWS SageMakerAWS SageMaker
AppenAppen
CVATCVAT
DataloopDataloop
DatasaurDatasaur
DoccanoDoccano
Google Cloud Vertex AIGoogle Cloud Vertex AI
HiveMindHiveMind
Label StudioLabel Studio
ProdigyProdigy
RemotasksRemotasks
Scale AIScale AI
SuperAnnotateSuperAnnotate
TagtogTagtog
TolokaToloka

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
ImageImage
TextText

Top Task Types

Audio Recording
Classification
Entity Ner Classification
Evaluation Rating
Prompt Response Writing SFT

Freelancer Overview

I specialize in training AI models labeling data, evaluating prompts, ranking responses, and classifying text, especially in education and tech. I’ve fine-tuned language models, created Q&A content, and simplified complex info for learning platforms. Accuracy and consistency are my top priorities. I adapt quickly to different tools and tasks, from summarization to multilingual reviews. Whether it’s technical docs or sensitive topics, I make sure every detail helps build smarter, safer AI.

ExpertEnglishSpanish

Labeling Experience

Scale AI

Text Classification & Prompt Quality Rating

Scale AITextEvaluation RatingPrompt Response Writing SFT
Labeled and categorized text samples for model training. Evaluated AI-generated prompts and responses for accuracy, coherence, and safety. Performed SFT-style rewrites and quality scoring to improve LLM instruction following. Ensured consistency using detailed guidelines across 2,000+ samples.

Labeled and categorized text samples for model training. Evaluated AI-generated prompts and responses for accuracy, coherence, and safety. Performed SFT-style rewrites and quality scoring to improve LLM instruction following. Ensured consistency using detailed guidelines across 2,000+ samples.

2024
Datasaur

Named Entity Recognition & Content Tagging

DatasaurTextEntity Ner ClassificationClassification
Annotated entities including names, organizations, locations, and product types across large text batches. Applied multi-label classifications to support downstream NLP models. Maintained high inter-annotator agreement and followed strict QA standards.

Annotated entities including names, organizations, locations, and product types across large text batches. Applied multi-label classifications to support downstream NLP models. Maintained high inter-annotator agreement and followed strict QA standards.

2022 - 2023
CVAT

Image & Video Annotation Specialist

CVATVideoBounding BoxSegmentation
Annotated large-scale image and video datasets with bounding boxes, segmentation, and object tracking for computer vision models. Conducted quality audits, ensured consistency, and collaborated on workflow improvements to enhance model performance.

Annotated large-scale image and video datasets with bounding boxes, segmentation, and object tracking for computer vision models. Conducted quality audits, ensured consistency, and collaborated on workflow improvements to enhance model performance.

2021 - 2022

Education

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Work History

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