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Kelvin Osaro

Kelvin Osaro

Prompt Engineer & AI Data Reviewer

Canada flagToronto, Canada
$25.00/hrIntermediateScale AIClickworker

Key Skills

Software

Scale AIScale AI
ClickworkerClickworker

Top Subject Matter

Scientific Domain Expertise
Technical Domain Expertise
Medical Domain Expertise

Top Data Types

TextText
DocumentDocument

Top Task Types

ClassificationClassification

Freelancer Overview

Prompt Engineer & AI Data Reviewer. Brings 2+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Bachelor of Computer Science, AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Classification.

IntermediateEnglish

Labeling Experience

Software Engineer

Computer Code ProgrammingComputer Programming Coding
Full-stack engineer who builds informational websites and interactive web applications, while managing the entire deployment lifecycle to ensure every updates is seamless, secure and high-performing.

Full-stack engineer who builds informational websites and interactive web applications, while managing the entire deployment lifecycle to ensure every updates is seamless, secure and high-performing.

2025 - Present

AI Content & Prompt Specialist

TextPrompt Response Writing SFT
At Cohere, I design and evaluate AI prompts specialized for health, medical, and biology-related domains. My responsibilities include reviewing AI-generated scientific explanations and systematically identifying factual inaccuracies, biases, and reasoning gaps. I collaborate with interdisciplinary teams to strengthen quality assurance for AI outputs. • Develop and assess prompts for medical and biology contexts • Apply structured evaluation of AI explanations • Detect factual errors and content biases • Contribute to AI QA standards through collaboration

At Cohere, I design and evaluate AI prompts specialized for health, medical, and biology-related domains. My responsibilities include reviewing AI-generated scientific explanations and systematically identifying factual inaccuracies, biases, and reasoning gaps. I collaborate with interdisciplinary teams to strengthen quality assurance for AI outputs. • Develop and assess prompts for medical and biology contexts • Apply structured evaluation of AI explanations • Detect factual errors and content biases • Contribute to AI QA standards through collaboration

2023 - Present

Prompt Engineer & AI Data Reviewer

TextData Collection
As a Prompt Engineer and AI Data Reviewer at Verbatext.ai, I annotate, classify, and evaluate scientific, technical, and general content for AI training datasets. I assess AI-generated explanations and summaries for accuracy and logical consistency and identify inconsistencies and errors to improve dataset quality. I research topics in biology, biotechnology, anatomy, and physiology for accurate data labeling. • Annotate and review AI outputs in scientific domains • Evaluate logical consistency and scientific correctness • Classify and flag errors in technical content • Research and label topics for dataset enhancement

As a Prompt Engineer and AI Data Reviewer at Verbatext.ai, I annotate, classify, and evaluate scientific, technical, and general content for AI training datasets. I assess AI-generated explanations and summaries for accuracy and logical consistency and identify inconsistencies and errors to improve dataset quality. I research topics in biology, biotechnology, anatomy, and physiology for accurate data labeling. • Annotate and review AI outputs in scientific domains • Evaluate logical consistency and scientific correctness • Classify and flag errors in technical content • Research and label topics for dataset enhancement

2022 - Present

Research Assistant, NLP & Content Development

TextClassification
While working as a Research Assistant at LexlabsAI, I labeled and categorized STEM educational data, primarily biology-focused. I extracted key scientific features and supported taxonomy creation for educational content development. I also participated in mapping concepts using structured classification techniques. • Labeled and classified educational biology data • Extracted features from scientific texts • Supported scientific taxonomy and mapping • Organized biomedical educational materials

While working as a Research Assistant at LexlabsAI, I labeled and categorized STEM educational data, primarily biology-focused. I extracted key scientific features and supported taxonomy creation for educational content development. I also participated in mapping concepts using structured classification techniques. • Labeled and classified educational biology data • Extracted features from scientific texts • Supported scientific taxonomy and mapping • Organized biomedical educational materials

2022 - 2023

Biological Research & Laboratory Assistant

ImageClassification
As a Biological Research & Laboratory Assistant, I labeled and documented experimental and biological research data with high precision. My work included recording structured results, synthesizing findings, and supporting foundational laboratory research through careful data organization. I maintained strict compliance with scientific data labeling protocols. • Structured labeling of experimental lab data • Documented biological sample data for research use • Summarized biological findings for records • Ensured data accuracy and compliance

As a Biological Research & Laboratory Assistant, I labeled and documented experimental and biological research data with high precision. My work included recording structured results, synthesizing findings, and supporting foundational laboratory research through careful data organization. I maintained strict compliance with scientific data labeling protocols. • Structured labeling of experimental lab data • Documented biological sample data for research use • Summarized biological findings for records • Ensured data accuracy and compliance

2017 - 2018

Education

L

Loyalist College

Bachelor of Computer Science, Computer Science

Bachelor of Computer Science
2021 - 2024

Work History

N

N/A

Biological Research & Laboratory Assistant

Toronto
2017 - 2018