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O
Oresanwo A.

Oresanwo A.

Freelance AI Data Annotator & Model Evaluator (Remote)

Nigeria flagLagos, Nigeria

Key Skills

Software

Don't disclose
Other
MercorMercor

Top Subject Matter

E-commerce search/recommendation and dataset taxonomy quality assurance
LLM instruction evaluation
SFT-style training data

Top Data Types

TextText
VideoVideo
DocumentDocument

Top Task Types

Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)
Text GenerationText Generation

Freelancer Overview

Freelance AI Data Annotator & Model Evaluator (Remote). Brings 8+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Don't disclose, Other, and Mercor. Education includes National Diploma, Delta State Polytechnic Otefe-Oghara (2010) and Higher National Diploma, Delta State Polytechnic Otefe-Oghara (2014). AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Prompt + Response Writing (SFT).

Labeling Experience

Mercor

Independent Generalist Expert (SxS & Instruction Evaluation) - MERCOR (Remote)

MercorMercorTextText

Performed instruction and scenario evaluation work by annotating and categorizing data under detailed guidelines and rubrics. Flagged dataset and output issues such as inconsistencies, ambiguities, and errors to improve dataset and system quality. Crafted tasks that tested an AI agent’s ability to reason, filter, and prioritize, then evaluated agent performance against guided hints. • Applied predefined rubrics and taxonomies for structured outputs • Detected and reported inconsistencies, ambiguities, and errors • Authored agent challenge tasks emphasizing reasoning and prioritization • Evaluated agent behavior by running scenarios and providing structured guidance

2026 - Present

Independent Business Analyst (SxS & Instruction Evaluation) - Remote

OtherTextText

Conducted SxS (side-by-side) evaluations comparing generated outputs for quality, accuracy, and relevance. Validated claims through fact-checking to identify inaccuracies and inconsistencies. Provided detailed, guideline-aligned rationales to support evaluation decisions and documented results for communication. • Compared outputs across evaluation criteria using SxS methodology • Identified and recorded factual and consistency issues • Produced structured justifications for rubric-based decisions • Supported review workflows with browser tools and extensions

2026 - Present

Independent AI Training Specialist (SFT & Instruction Evaluation) - Remote

OtherTextTextPrompt + Response Writing (SFT)Prompt + Response Writing (SFT)

Developed supervised fine-tuning style instruction and prompt workflows to improve model reliability. Created benchmark reference responses as ground truth for training while enforcing factual correctness, logical completeness, and complex constraint adherence. Performed adversarial testing and conducted detailed audits to identify hallucination patterns and instruction-following failures. • Converted raw metadata and taxonomies into test-ready instruction sets • Authored ground-truth benchmark responses for evaluation and training • Ran adversarial high-complexity scenarios to expose edge-case failures • Applied validation checks and audits for coherence and factual soundness

2024 - Present

Freelance AI Data Annotator & Model Evaluator (Remote)

Don't discloseTextText

Evaluated and ranked search and recommendation outputs using human judgment aligned to relevance and safety expectations. Reviewed AI-generated responses to complex prompts with emphasis on compliance, factual integrity, and contextual clarity. Identified labeling and categorization inconsistencies within structured datasets, especially where strict taxonomy rules apply. • Assessed output quality and relevance relative to prompt intent • Verified safety compliance and reduced unsupported assumptions • Corrected dataset labeling/category inconsistencies • Delivered QA feedback to peers to maintain training-data quality

2023 - Present

Freelance Content Strategy & Technical Writing Consultant - Remote

TextTextText GenerationText Generation

Created and executed comparative content tests to assess clarity, linguistic quality, and audience engagement. Translated complex technical protocols into structured, user-facing documentation for Web3 stakeholders. Reviewed narrated video content and provided actionable feedback on pacing, tone, and delivery to improve viewer retention. • Designed comparative experiments for script and advertising copy • Converted technical concepts into structured documentation • Evaluated narrative/video delivery characteristics for engagement • Provided editorial feedback to support consistency and clarity

2021 - 2023

Education

D

Delta State Polytechnic Otefe-Oghara

Higher National Diploma, Mechanical and Manufacturing Engineering

Higher National Diploma
2012 - 2014
D

Delta State Polytechnic Otefe-Oghara

National Diploma, Mechanical Engineering

National Diploma
2008 - 2010

Work History

B

BENEX PROJECT SERVICE LIMITED (OKEMUTIE MANUFACTURING AND PROCESSING

PRODUCTION LINES SUPERVISOR

Sapele
2020 - 2024
F

Freelance

Freelance Content Strategy & Technical Writing Consultant

Lagos
2021 - 2023