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Bankole Adojutelegan

@bankoleadojutelegan

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Data Annotation Specialist delivering accurate AI/ML training data across text, images, and multimodal sets.

Nigeria

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What I'm looking for

I’m looking to apply my quality-first data labeling and review experience in an innovative team, building reliable AI/ML datasets and helping drive intelligent document workflows across institutions—while maintaining strong accuracy and throughput.

I’m a detail-focused Data Annotation Specialist with over one year of practical experience contributing to AI/ML model training across platforms like Sahara AI Data Services Platform and Appen. I precisely annotate, categorize, and review datasets across text, images, video, and multimodal data, strictly following task-specific playbooks and quality assurance protocols.

Across multiple concurrent projects, I handle complex work such as sentiment annotation, NER, bounding boxes, semantic classification/segmentation, multimodal alignment, document classification, and speech-to-text transcription. I maintain accuracy above platform benchmarks through peer review and majority-vote QA, consistently meeting throughput targets and flagging ambiguous edge cases to improve guidelines. I’m eager to bring this precision and reliability to a forward-thinking organisation to drive intelligent document workflows across different institutions.

Experience

Work history, roles, and key accomplishments

Independent Data Annotation Contractor

Appen

Aug 2023 - Oct 2025 (2 years 2 months)

Worked as an independent contractor on Appen’s distributed AI training data platform, labeling text, image, audio, and video datasets to client-specific quality standards. Conducted tasks including social media evaluation, NER, document classification, and speech-to-text transcription while meeting daily/weekly throughput targets and maintaining accuracy within project thresholds.

Image Labeling Social Media Evaluation Document Classification Audio Transcription Data Quality Assurance Annotation Playbooks Compliance

Data Annotation Specialist

Sahara AI Data Services Platform

Sep 2024 - Mar 2025 (6 months)

Served as an annotator and peer reviewer on Sahara AI’s decentralised data labeling platform, labeling text, image, and multimodal datasets according to strict playbooks and QA specifications. Achieved QA benchmark performance (reported 90–95%) through ML-based majority-vote review, escalated edge cases, and maintained high accuracy scores supported by Sahara Points rewards and leaderboard ranking

Data Annotation Multimodal Alignment Peer Review Majority Vote Review Annotation Accuracy Benchmarking