Chimezie E.

Key Skills

Software

Remotasks

Toloka

Top Subject Matter

Computer vision (image and video annotation)

Speech transcription and audio annotation for AI training

NLP labeling (sentiment, intent, NER)

Top Data Types

Image

Audio

Text

Video

Top Task Types

Bounding Box

Transcription

Classification

Freelancer Overview

Data Labeler & Annotator — Remotasks (Remote). Brings 4+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Remotasks and Toloka. Education includes Bachelor of Science, University of Lagos (2019) and Certification, Coursera (DeepLearning.AI) (2022). AI-training focus includes data types such as Image, Audio, and Text and labeling workflows including Bounding Box, Transcription, and Entity (NER).

Labeling Experience

Crowdsourced AI Trainer — Toloka (Remote)

TolokaVideo

Completed image moderation and audio quality rating microtasks on Toloka as part of broader AI training data preparation. Ensured labels reflected project guidelines for consistent moderation outcomes. Delivered reliable annotations across high-volume and domain-diverse projects. • Participated in image moderation labeling tasks • Completed audio quality rating microtasks per task requirements • Followed project-specific instructions to maintain accuracy • Supported multiple AI training initiatives across domains

2023 - Present

Crowdsourced AI Trainer — Toloka (Remote)

TolokaTextClassification

Labeled text content on Toloka to support category classification, toxicity detection, and topic relevance scoring across multiple languages. Performed text relevance assessments to improve dataset quality for NLP and moderation use cases. Maintained high accuracy by strictly following detailed task instructions. • Completed category classification and topic relevance labeling • Performed toxicity detection annotations for safety-focused datasets • Scored text relevance across multiple languages • Followed instructions consistently to sustain high accuracy and performance

2023 - Present

Crowdsourced AI Trainer — Toloka (Remote)

TolokaAudio

Worked as a crowdsourced AI trainer on Toloka by completing microtasks for audio and text-related quality improvements. Annotated speech data by transcribing and tagging audio clips intended for language model training datasets. Followed project-specific instructions to achieve high accuracy and maintain top-tier status. • Rated audio quality and performed related audio micro-annotations • Transcribed and tagged audio clips for language model training data • Applied consistent labeling across varied speech samples and instructions • Worked across projects spanning multiple domains with accuracy focus

2023 - Present

Data Labeler & Annotator — Remotasks (Remote)

RemotasksText

Completed text labeling tasks on Remotasks to support NLP pipeline training and evaluation. Labeled sentiments, intents, and named entities following task-specific guidelines. Delivered consistent results while meeting quotas and sustaining quality thresholds. • Labeled sentiment classification outputs for NLP datasets • Performed intent detection and topic-related annotations for downstream models • Tagged named entities (NER) with attention to guideline fidelity • Maintained quality and completed required volumes for daily targets

2022 - Present

Data Labeler & Annotator — Remotasks (Remote)

RemotasksAudioTranscription

Transcribed audio recordings on Remotasks with a focus on accuracy to support speech and language model training. Captured speech content along with speaker labels and non-verbal cues according to strict style guides. Performed work at high volume while maintaining quality above platform benchmarks. • Transcribed speech with detailed speaker attribution and non-verbal cue tagging • Adhered to style guides and annotation rules for consistent transcripts • Met daily task quotas while sustaining above-benchmark quality scores • Ensured transcript correctness through quality-conscious labeling and review

2022 - Present

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Education

Work History