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G
Gabriel

Gabriel

Freelance Audio Evaluator & Language Annotator (AI data platform)

Nigeria flagLagos, Nigeria

Key Skills

Software

Other

Top Subject Matter

English evaluation, transcription and linguistic quality review and annotation
Data annotation
Legal Services & Contract Review

Top Data Types

AudioAudio
TextText
DocumentDocument

Top Task Types

TranscriptionTranscription

Freelancer Overview

Freelance Audio Evaluator & Language Annotator (AI data platform). Brings 3+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. AI-training focus includes data types such as Audio and labeling workflows including Evaluation, Rating, and Transcription.

Labeling Experience

Freelance Audio Evaluator & Language Annotator (AI data platform)

OtherAudioAudio

Performed rubric-based evaluation of short Nigerian English audio clips, scoring accent authenticity, pronunciation accuracy, intonation, and naturalness. Compared paired A/B recordings and selected the version that best matched the target accent while providing concise written rationales. Identified regional accent markers (Yoruba-, Igbo-, Hausa-influenced English) and flagged mismatches between claimed and observed speaker variety. • Applied detailed evaluation guidelines to maintain consistency. • Maintained >95% inter-annotator agreement through calibration sets. • Produced defensible quality scores meeting project thresholds. • Delivered tasks on/above deadline in a remote workflow.

2024 - 2026

Transcriber & Language Quality Reviewer (AI data platform)

OtherAudioAudioTranscriptionTranscription

Created verbatim and clean-read transcriptions of Nigerian English audio for downstream NLP and speech-recognition use cases. Reviewed peer transcriptions for accuracy, formatting, and compliance with style guides, and provided structured feedback to improve consistency. Tagged speaker characteristics such as gender, approximate age band, and regional accent, while flagging audio quality issues like background noise and clipping. • Produced transcription outputs aligned to annotation requirements. • Performed quality assurance on transcription consistency. • Added linguistic/metadata tags relevant to training data. • Documented identified audio quality problems for correction.

2024 - 2025

Education

U

University of Lagos

Systems Engineering , Engineering

Systems Engineering
2017 - 2022

Work History

I

Independent

Freelance Audio Evaluator and Linguistic Reviewer

Lagos
2024 - 2026
I

Independent

Transcriber and Language Quality Reviewer

Lagos
2024 - 2025