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J

Josphat Kinyanjui

AI Trainer & Analyst

Kenya flagNairobi, Kenya
$19.00/hrExpertScale AIInternal Proprietary ToolingGoogle Cloud Vertex AI

Key Skills

Software

Scale AIScale AI
Internal/Proprietary Tooling
Google Cloud Vertex AIGoogle Cloud Vertex AI
LionbridgeLionbridge

Top Subject Matter

Browser Automation
Workflow Evaluation
Human-Computer Interaction

Top Data Types

TextText
DocumentDocument

Top Task Types

Classification
Question Answering
Fine Tuning
Prompt Response Writing SFT

Freelancer Overview

AI Trainer & Analyst. Brings 3+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Master of Business Administration, United States International University-Africa (2022) and Bachelor of Business Administration, Zetech University (2018). AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Content Moderation.

ExpertEnglish

Labeling Experience

AI Trainer & Analyst

Text
As an AI Trainer and Analyst at Turing, I evaluated browser-based AI actions for logical accuracy, efficiency, and consistency with user intent. My responsibilities involved designing and refining prompts, monitoring AI task completion, and providing structured feedback. I conducted side-by-side comparisons to assess and improve model performance. • Assessed AI-driven browser workflows for realism and correctness. • Identified and documented failure cases in web task execution. • Reviewed structured outputs for factual and procedural accuracy. • Provided actionable feedback to enhance browser-based AI reasoning.

As an AI Trainer and Analyst at Turing, I evaluated browser-based AI actions for logical accuracy, efficiency, and consistency with user intent. My responsibilities involved designing and refining prompts, monitoring AI task completion, and providing structured feedback. I conducted side-by-side comparisons to assess and improve model performance. • Assessed AI-driven browser workflows for realism and correctness. • Identified and documented failure cases in web task execution. • Reviewed structured outputs for factual and procedural accuracy. • Provided actionable feedback to enhance browser-based AI reasoning.

2025 - Present

Chat Moderator (Generative AI)

TextClassification
As a Chat Moderator at Goodbunny, I reviewed AI-generated chats and user interactions to ensure platform guideline compliance. My work included real-time chat-based evaluations, conversational quality assessments, and empathy/tone calibration. I regularly delivered structured performance feedback to enhance generative AI effectiveness. • Evaluated model responses for empathy, clarity, and engagement. • Flagged and documented policy-violating interactions. • Collaborated with QA teams to refine moderation processes. • Improved the consistency of AI chat moderation decisions.

As a Chat Moderator at Goodbunny, I reviewed AI-generated chats and user interactions to ensure platform guideline compliance. My work included real-time chat-based evaluations, conversational quality assessments, and empathy/tone calibration. I regularly delivered structured performance feedback to enhance generative AI effectiveness. • Evaluated model responses for empathy, clarity, and engagement. • Flagged and documented policy-violating interactions. • Collaborated with QA teams to refine moderation processes. • Improved the consistency of AI chat moderation decisions.

2025 - 2025

AI Trainer and Data Annotation Specialist

Text
At Outlier, I worked as an AI Trainer and Data Annotation Specialist focused on training and evaluating Large Language Models. I annotated datasets, assessed AI responses for factuality and tone, and offered detailed feedback to reduce model bias. The role emphasized high data quality, linguistic accuracy, and safe model development. • Assessed LLM outputs for fluency, helpfulness, and safety. • Crafted and refined prompts for multi-domain scenario testing. • Annotated text data for supervised learning and training. • Delivered comprehensive feedback to optimize model performance.

At Outlier, I worked as an AI Trainer and Data Annotation Specialist focused on training and evaluating Large Language Models. I annotated datasets, assessed AI responses for factuality and tone, and offered detailed feedback to reduce model bias. The role emphasized high data quality, linguistic accuracy, and safe model development. • Assessed LLM outputs for fluency, helpfulness, and safety. • Crafted and refined prompts for multi-domain scenario testing. • Annotated text data for supervised learning and training. • Delivered comprehensive feedback to optimize model performance.

2024 - 2024

Education

U

United States International University-Africa

Master of Business Administration, Business Administration

Master of Business Administration
2022 - 2022
Z

Zetech University

Bachelor of Business Administration, Business Administration and Management (Finance)

Bachelor of Business Administration
2018 - 2018

Work History

V

Valdatech

Business Tutor & Writer

Nairobi
2023 - 2024
S

SBDC

Business Advisor

Nairobi
2022 - 2023