Maina James

Key Skills

Software

Other

Toloka

Appen

Google Cloud Vertex AI

OneForma

Remotasks

Top Subject Matter

Multimodal AI/ML research data

Product information/Consumer content

AI and machine learning data

Top Data Types

Video

Text

Audio

Image

Document

Top Task Types

Classification

Transcription

Object Detection

Text Generation

Question Answering

Text Summarization

Fine Tuning

Evaluation Rating

Data Collection

Prompt Response Writing SFT

Freelancer Overview

AI Trainer & Data Contributor. Brings 5+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal, Proprietary Tooling, and Other. Education includes Bachelor of Science, Jomo Kenyatta University of Agriculture and Technology (2022) and Kenya Certificate of Secondary Education, Bavuni Secondary School (2016). AI-training focus includes data types such as Video, Text, and Audio and labeling workflows including Evaluation, Rating, and Classification.

Labeling Experience

Product & Research Support Assistant

TextClassification

At Towergold Ventures, I analyzed consumer-facing content for clarity and ensured proper labeling to facilitate accurate product communication. I conducted structured reviews of written and visual materials to promote usability and consistency. I supported quality checks and collaborated with teams to refine annotation standards. • Identified discrepancies in data annotation and recommended corrective measures. • Improved internal processes through standardization and feedback. • Ensured high-quality labeling in cross-functional project settings. • Maintained adherence to strict guideline protocols.

At Towergold Ventures, I analyzed consumer-facing content for clarity and ensured proper labeling to facilitate accurate product communication. I conducted structured reviews of written and visual materials to promote usability and consistency. I supported quality checks and collaborated with teams to refine annotation standards. • Identified discrepancies in data annotation and recommended corrective measures. • Improved internal processes through standardization and feedback. • Ensured high-quality labeling in cross-functional project settings. • Maintained adherence to strict guideline protocols.

2024 - Present

AI Trainer & Data Contributor

VideoClassification

As an AI Trainer & Data Contributor at Prolific, I supported large-scale research projects by labeling and evaluating video, audio, and text data. I conducted structured tasks such as video observation and response validation to enhance AI and machine learning models. I was responsible for high accuracy and consistency across evolving multimodal guidelines. • Contributed nuanced descriptions of visual and behavioral cues for dataset quality. • Evaluated AI-generated outputs for clarity, relevance, and rubric alignment. • Developed skills in visual literacy and sustained attention for quality control. • Managed diverse multimodal tasks using advanced annotation workflows.

As an AI Trainer & Data Contributor at Prolific, I supported large-scale research projects by labeling and evaluating video, audio, and text data. I conducted structured tasks such as video observation and response validation to enhance AI and machine learning models. I was responsible for high accuracy and consistency across evolving multimodal guidelines. • Contributed nuanced descriptions of visual and behavioral cues for dataset quality. • Evaluated AI-generated outputs for clarity, relevance, and rubric alignment. • Developed skills in visual literacy and sustained attention for quality control. • Managed diverse multimodal tasks using advanced annotation workflows.

2023 - Present

Data Annotation & Transcription Specialist

OtherAudioTranscription

As a Data Annotation & Transcription Specialist at CrowdGen, I transcribed and annotated audio and video content with a focus on grammar and formatting accuracy. I labeled datasets to support the improvement and training of AI and ML models. I performed quality control and ensured proper project guidelines were applied throughout tasks. • Reviewed and edited transcriptions for clarity and completeness. • Maintained consistency across large datasets with attention to detail. • Conducted quality checks to correct errors and optimize data usability. • Supported development of diverse data annotation solutions for AI.

As a Data Annotation & Transcription Specialist at CrowdGen, I transcribed and annotated audio and video content with a focus on grammar and formatting accuracy. I labeled datasets to support the improvement and training of AI and ML models. I performed quality control and ensured proper project guidelines were applied throughout tasks. • Reviewed and edited transcriptions for clarity and completeness. • Maintained consistency across large datasets with attention to detail. • Conducted quality checks to correct errors and optimize data usability. • Supported development of diverse data annotation solutions for AI.

2023 - 2023

Annotator & Search Relevance Evaluator

TolokaText

At Toloka (Yandex), I evaluated search relevance and performed annotation of text, image, audio, and video-based tasks for AI and ML model training. I applied detailed guidelines, rubrics, and reviewer feedback to ensure reliable labeled data. I maintained accuracy and consistency in high-volume, guideline-driven environments. • Assessed queries, search results, and AI outputs for usefulness and quality. • Labeled data to improve rankings, recommendations, and multimodal understanding. • Managed ambiguous scenarios through careful guideline adherence. • Incorporated continual feedback to refine annotation quality.

At Toloka (Yandex), I evaluated search relevance and performed annotation of text, image, audio, and video-based tasks for AI and ML model training. I applied detailed guidelines, rubrics, and reviewer feedback to ensure reliable labeled data. I maintained accuracy and consistency in high-volume, guideline-driven environments. • Assessed queries, search results, and AI outputs for usefulness and quality. • Labeled data to improve rankings, recommendations, and multimodal understanding. • Managed ambiguous scenarios through careful guideline adherence. • Incorporated continual feedback to refine annotation quality.

2022 - 2022

Education

Work History