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Mathew Litwaka

@mathewlitwaka

AI Trainer and Data Annotation Specialist in remote AI training, creating multi-turn conversations and evaluating LLM responses and agent workflows.

Kenya

Message

What I'm looking for

I’m looking to contribute my AI training, Python, machine-learning, data-annotation, and language experience to advanced AI and machine-learning projects involving LLM training, AI agents, software development, data quality, and voice or audio annotation.

Since 2021, I’ve worked remotely as an AI Trainer and Data Annotation Specialist, evaluating AI-generated responses for accuracy, relevance, clarity, and instruction-following. I create and review multi-turn conversations and assess AI-agent workflows and function-call concepts.

In my independent Python and software projects, I apply Python to data processing and analysis, including cleaning, preprocessing, and validation. I also work with machine-learning concepts and evaluate data and basic model performance.

As a freelance Legal Translator and Language Specialist, I translate and review legal and professional documents while preserving meaning, context, tone, and terminology. I bring that language experience to AI evaluation, annotation, and localization projects.

Experience

Work history, roles, and key accomplishments

Current

AI Trainer & Data Annotation Specialist

Current

Freelance

Jan 2021 - Present (5 years 9 months)

Evaluated AI-generated responses for accuracy, relevance, clarity, and instruction following. Created and reviewed multi-turn conversations for AI training, identified hallucinations and inconsistencies, and performed text classification and semantic annotation.

LLM Evaluation Multi Turn Dialogue Design Function Calling Evaluation Prompt Analysis Conversational AI Testing AI Response Ranking Instruction Following Assessment Hallucination Detection AI generated content review Data Annotation Human Feedback AI Quality Assurance Workflow Validation

Current

Python & Software / Machine Learning Specialist

Current

Independent Projects

Jan 2021 - Present (5 years 9 months)

Applied Python programming to data-processing and analytical tasks, performing data cleaning, preprocessing, validation, and structured-data analysis. Applied software-engineering principles and machine-learning concepts to technical problem solving.

Python data preprocessing Data Cleaning Data Validation Exploratory Data Analysis Machine Learning Fundamentals Supervised Learning Unsupervised Learning Model Evaluation Feature Engineering Algorithmic Thinking Debugging Troubleshooting Structured Data Processing Automation

Current

Legal Translator & Language Specialist

Current

Freelance

Jan 2021 - Present (5 years 9 months)

Translated and reviewed legal and professional documents, preserving meaning, context, tone, and terminology. Conducted proofreading and linguistic quality assurance, and researched specialized legal terminology.

Legal Translation Legal Terminology Professional Translation Linguistic Quality Assurance Proofreading Editing Localization Intent Analysis Legal Document Review Research Terminology

Current

Content & Data Quality Specialist

Current

Freelance

Jan 2021 - Present (5 years 9 months)

Reviewed and classified digital content according to project guidelines, validated information, and identified quality issues. Performed quality-control checks on datasets and documented errors with corrective feedback.

Content Review Classification Data Validation Quality Assurance Annotation Consistency Error Documentation Feedback Instruction Interpretation