Munyoki Joseph Vundi

Key Skills

Software

CVAT

Argilla

Data Annotation Tech

Top Subject Matter

No subject matter listed

Top Data Types

Text

Top Label Types

Text Generation

RLHF

Evaluation Rating

Transcription

Entity Ner Classification

Freelancer Overview

I am an experienced AI data trainer and machine learning enthusiast with a strong background in data labeling, annotation, and evaluation for NLP and large language models. My hands-on expertise includes managing end-to-end data projects, from web scraping and data extraction using Python (BeautifulSoup, Selenium, Playwright) to cleaning and structuring datasets with Pandas and NumPy for machine learning applications. I have successfully delivered over 100 high-quality datasets for sentiment analysis, entity recognition, intent classification, and chatbot evaluation, consistently maintaining accuracy above 95% on platforms like Upwork and Fiverr. My skills also extend to reinforcement learning with human feedback (RLHF), model output assessment, and collaborating closely with clients to ensure data integrity and project success. I am passionate about delivering reliable, well-annotated data that drives the performance and reliability of AI systems.

Labeling Experience

RLHF Data Labeler & Evaluator

Data Annotation TechTextQuestion AnsweringText Generation

Assisted in reinforcement learning with human feedback (RLHF) by reviewing AI-generated responses and supplying structured corrections. Assessed and ranked model outputs as part of AI training workflows to improve response quality. Ensured labeled data improved the feedback loop for conversational AI development. • Provided actionable, structured feedback for model improvement. • Evaluated AI responses for accuracy and user alignment. • Enhanced dataset reliability and overall model integrity. • Supported RLHF projects for multiple clients on AI training platforms.

Assisted in reinforcement learning with human feedback (RLHF) by reviewing AI-generated responses and supplying structured corrections. Assessed and ranked model outputs as part of AI training workflows to improve response quality. Ensured labeled data improved the feedback loop for conversational AI development. • Provided actionable, structured feedback for model improvement. • Evaluated AI responses for accuracy and user alignment. • Enhanced dataset reliability and overall model integrity. • Supported RLHF projects for multiple clients on AI training platforms.

2019 - 2024

Dataset Annotation Specialist (Freelance)

ArgillaTextEntity Ner ClassificationRLHF

Annotated text datasets for NLP tasks, including sentiment analysis, entity recognition, and intent classification. Performed dataset cleaning, structured labeling, and ensured formatting consistency for AI model training. Used standard formats and Python frameworks for data preparation and delivery. • Labeled data for sentiment analysis, entity recognition, and intent classification. • Standardized datasets in CSV and JSON formats for machine learning pipelines. • Applied quality assurance checks for high accuracy and reliability. • Managed multiple projects simultaneously, ensuring client satisfaction and repeat business.

Annotated text datasets for NLP tasks, including sentiment analysis, entity recognition, and intent classification. Performed dataset cleaning, structured labeling, and ensured formatting consistency for AI model training. Used standard formats and Python frameworks for data preparation and delivery. • Labeled data for sentiment analysis, entity recognition, and intent classification. • Standardized datasets in CSV and JSON formats for machine learning pipelines. • Applied quality assurance checks for high accuracy and reliability. • Managed multiple projects simultaneously, ensuring client satisfaction and repeat business.

2019 - 2024

AI Data Trainer & Machine Learning Model Evaluator (Freelancer)

ArgillaTextRLHFFine Tuning

Evaluated and labeled outputs from large language models (LLMs) and AI models for accuracy, relevance, and coherence. Performed structured data annotation, provided detailed corrections, and reviewed results to enhance AI model performance. Collaborated with clients on freelance platforms to deliver high-quality labeled datasets on time. • Labeled and rated AI chatbot and model responses for correctness and coherence. • Conducted reinforcement learning with human feedback (RLHF), offering structured guidance to improve responses. • Delivered clean, normalized datasets suitable for machine learning applications. • Trained and mentored junior data labelers in best practices for AI evaluation workflows.

Evaluated and labeled outputs from large language models (LLMs) and AI models for accuracy, relevance, and coherence. Performed structured data annotation, provided detailed corrections, and reviewed results to enhance AI model performance. Collaborated with clients on freelance platforms to deliver high-quality labeled datasets on time. • Labeled and rated AI chatbot and model responses for correctness and coherence. • Conducted reinforcement learning with human feedback (RLHF), offering structured guidance to improve responses. • Delivered clean, normalized datasets suitable for machine learning applications. • Trained and mentored junior data labelers in best practices for AI evaluation workflows.

2019 - 2024

Education

Work History