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Chikosolu Alex

AI Trainer & Response Evaluator

Nigeria flagEnugu, Nigeria
$20.00/hrIntermediateScale AIRemotasks

Key Skills

Software

Scale AIScale AI
RemotasksRemotasks

Top Subject Matter

Stem Domain Expertise
Business Domain Expertise
Coding Domain Expertise

Top Data Types

TextText
ImageImage
DocumentDocument

Top Task Types

ClassificationClassification

Freelancer Overview

AI Trainer & Response Evaluator. Brings 2+ years of professional experience across legal operations, contract review, compliance, and structured analysis. Core strengths include Scale AI and Remotasks. Education includes Bachelor of Science, University of Lagos (2021). AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Classification.

IntermediateEnglishIgbo

Labeling Experience

Scale AI

AI Trainer & Response Evaluator

Scale AIText
As an AI Trainer and Response Evaluator at Outlier AI / Scale AI, I evaluated thousands of language model outputs across multiple domains. My primary responsibility was to assess the accuracy, helpfulness, coherence, and safety of AI-generated responses, providing preference rankings and written justifications for model training and RLHF tasks. I also designed challenging prompts to test model reasoning and identified hallucinations and policy issues in outputs. • Performed head-to-head RLHF and preference ranking of LLM responses with extensive written feedback. • Identified hallucinations, factual errors, bias, and policy violations in generative model outputs. • Created adversarial prompts and test cases to evaluate model weaknesses and instruction-following. • Consistently achieved documented accuracy rates above 93% for safety and quality evaluations.

As an AI Trainer and Response Evaluator at Outlier AI / Scale AI, I evaluated thousands of language model outputs across multiple domains. My primary responsibility was to assess the accuracy, helpfulness, coherence, and safety of AI-generated responses, providing preference rankings and written justifications for model training and RLHF tasks. I also designed challenging prompts to test model reasoning and identified hallucinations and policy issues in outputs. • Performed head-to-head RLHF and preference ranking of LLM responses with extensive written feedback. • Identified hallucinations, factual errors, bias, and policy violations in generative model outputs. • Created adversarial prompts and test cases to evaluate model weaknesses and instruction-following. • Consistently achieved documented accuracy rates above 93% for safety and quality evaluations.

2023 - Present
Remotasks

Senior Data Contributor & Annotator

RemotasksTextClassification
As a Senior Data Contributor and Annotator at Remotasks / DataAnnotation.tech, I handled over 2,000 NLP labeling and audio transcription tasks. My work included text classification, sentiment analysis, named-entity recognition, and transcription accuracy across diverse accents and technical domains. I provided annotation rationales and mentored new contributors in best practices. • Completed large volumes of text and audio annotation tasks for machine learning pipelines. • Produced detailed rationales for challenging cases and supported platform guideline development. • Passed advanced qualification exams to gain access to premium annotation categories. • Mentored 4 new contributors on quality, productivity, and platform guidelines.

As a Senior Data Contributor and Annotator at Remotasks / DataAnnotation.tech, I handled over 2,000 NLP labeling and audio transcription tasks. My work included text classification, sentiment analysis, named-entity recognition, and transcription accuracy across diverse accents and technical domains. I provided annotation rationales and mentored new contributors in best practices. • Completed large volumes of text and audio annotation tasks for machine learning pipelines. • Produced detailed rationales for challenging cases and supported platform guideline development. • Passed advanced qualification exams to gain access to premium annotation categories. • Mentored 4 new contributors on quality, productivity, and platform guidelines.

2022 - 2023

Education

U

University of Lagos

Bachelor of Science, Computer Science

Bachelor of Science
2017 - 2021

Work History

S

Self-Employed

Freelance Research Writer & Content Evaluator

Lagos
2021 - 2022