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O

Obed Johnson

AI Response Evaluator & Prompt Engineer | Outlier

UNITED_KINGDOM flag
Nottingham, United Kingdom
$100.00/hrIntermediate

Key Skills

Software

No software listed

Top Subject Matter

AI-generated text
Code Domain Expertise
and images

Top Data Types

ImageImage
TextText
DocumentDocument

Top Task Types

Classification
Evaluation Rating
RLHF
Computer Programming Coding
Prompt Response Writing SFT

Freelancer Overview

AI trainer and evaluator with a strong software engineering and machine learning background. Working with Outlier since 2024 across multiple projects involving AI response quality assessment, prompt engineering, code correctness review, and text-to-image evaluation. Core work includes rating AI-generated responses across structured quality dimensions: instruction following, truthfulness, verbosity, prompt correctness, and writing style. Also experienced in writing detailed preference justifications, crafting high-level computer science prompts, correcting model-generated code, and evaluating text-to-image outputs for prompt alignment and quality. Technical evaluations are grounded in 7+ years of hands-on software engineering experience across Python, JavaScript, Angular, Next.js, and ML/AI systems.

IntermediateIgboFrenchEnglish

Labeling Experience

AI Response Evaluator & Prompt Engineer | Outlier

TextRLHF
AI Response Evaluator & Prompt Engineer | Outlier | 2024 – Present Remote | Multiple concurrent projects | Task management: Multimango | Time tracking: Hubstaff • Evaluate pairs of AI-generated responses side-by-side across five structured quality dimensions and write detailed preference justifications identifying specific strengths and weaknesses in each response, referencing concrete examples rather than general observations • Review and correct model-generated code for logical errors, runtime failures, and edge case handling across varied programming languages and difficulty levels, tracing code line by line to confirm correct output • Write high-level computer science prompts across multiple subdomains and difficulty tiers on the Millennium Leaf project, calibrating ambiguity, constraints, domain knowledge requirements, and program scope per task specifications • Evaluate text-to-image model outputs for prompt alignment, visual quality, and comparative ranking on the Aether project, assessing multiple generation metrics per task • Apply specialist knowledge of software engineering, ML/AI systems, and computer vision to assess technically complex responses that require domain expertise beyond general annotation capability Stack: Python, JavaScript, TypeScript, software engineering, ML/AI systems, computer vision, data structures and algorithms, Outlier, Multimango, Hubstaff

AI Response Evaluator & Prompt Engineer | Outlier | 2024 – Present Remote | Multiple concurrent projects | Task management: Multimango | Time tracking: Hubstaff • Evaluate pairs of AI-generated responses side-by-side across five structured quality dimensions and write detailed preference justifications identifying specific strengths and weaknesses in each response, referencing concrete examples rather than general observations • Review and correct model-generated code for logical errors, runtime failures, and edge case handling across varied programming languages and difficulty levels, tracing code line by line to confirm correct output • Write high-level computer science prompts across multiple subdomains and difficulty tiers on the Millennium Leaf project, calibrating ambiguity, constraints, domain knowledge requirements, and program scope per task specifications • Evaluate text-to-image model outputs for prompt alignment, visual quality, and comparative ranking on the Aether project, assessing multiple generation metrics per task • Apply specialist knowledge of software engineering, ML/AI systems, and computer vision to assess technically complex responses that require domain expertise beyond general annotation capability Stack: Python, JavaScript, TypeScript, software engineering, ML/AI systems, computer vision, data structures and algorithms, Outlier, Multimango, Hubstaff

2024 - Present

Education

U

University of Nottingham

Master of Science, Computer Science

Master of Science
2024 - 2026
D

Data Link Institute of Business & Technology

Bachelor of Science, Information and Communication Technology

Bachelor of Science
2017 - 2021

Work History

F

Freelance

Freelance Software Engineer & Designer

Nottingham
2022 - Present
V

Vasil Tech

Web Developer

Nottingham
2021 - 2024