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J
Joshua Mensah

Joshua Mensah

AI Prompt Engineer and Output Evaluator

Ghana flagAccra, Ghana
$5.00/hrEntry Level

Key Skills

Software

No software listed

Top Subject Matter

Large Language Models (LLMs)
AI-powered applications
Medical Support Systems

Top Data Types

TextText
VideoVideo
ImageImage

Top Task Types

Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)
ClassificationClassification
Computer Programming/CodingComputer Programming/Coding

Freelancer Overview

AI Prompt Engineer and Output Evaluator. Brings 5+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Bachelor of Science, University of Ghana (2022). AI-training focus includes data types such as Text and labeling workflows including Prompt + Response Writing (SFT).

Entry LevelEnglish

Labeling Experience

LLM Prompt Engineering and Output Evaluation

TextPrompt Response Writing SFT
Collaborated with large language models (LLMs) to optimize model outputs and reduce hallucinations. Designed and tested prompts to improve response accuracy and quality for various AI-powered applications. Regularly performed fact-checking, response evaluation, and structured reasoning for AI outputs. • Developed prompt engineering workflows to enhance text generation consistency • Conducted output refinement and correction of AI-generated content • Evaluated and rated LLM responses against quality and factuality standards • Engaged in intent checking and error analysis for iteration and improvement

Collaborated with large language models (LLMs) to optimize model outputs and reduce hallucinations. Designed and tested prompts to improve response accuracy and quality for various AI-powered applications. Regularly performed fact-checking, response evaluation, and structured reasoning for AI outputs. • Developed prompt engineering workflows to enhance text generation consistency • Conducted output refinement and correction of AI-generated content • Evaluated and rated LLM responses against quality and factuality standards • Engaged in intent checking and error analysis for iteration and improvement

2023 - Present

Education

U

University of Ghana

Bachelor of Science, Food Process Engineering

Bachelor of Science
2022 - 2026

Work History

P

PixelPlates (YouTube)

Creative Director

Accra
2025 - Present
P

PixelPlates

Founder & Creative Director

Accra
2023 - Present