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O

Obed Johnson

AI Response Evaluator & Prompt Engineer | Outlier

United Kingdom flagNottingham, 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

ClassificationClassification
Evaluation/RatingEvaluation/Rating
RLHFRLHF
Computer Programming/CodingComputer Programming/Coding
Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)

Freelancer Overview

AI trainer and evaluator with a strong background in software engineering and machine learning. 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.

IntermediateEnglishFrenchIgbo

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