Kolade Oluwasina

Key Skills

Software

Scale AI

Appen

Lionbridge

Top Subject Matter

Autonomous Vehicles

Healthcare Data & Medical Documentation

E-commerce Product Data & Taxonomy

Top Data Types

Image

Text

Document

Top Task Types

Bounding Box

Polygon

Freelancer Overview

Senior Data Annotation Specialist. Brings 8+ years of professional experience across legal operations, contract review, compliance, and structured analysis. Core strengths include Scale AI, Appen, and Lionbridge. Education includes Bachelor of Science, University of Oregon (2019). AI-training focus includes data types such as Image and labeling workflows including Bounding Box and Polygon.

Labeling Experience

Senior Data Annotation Specialist

Scale AIImageBounding Box

As a Senior Data Annotation Specialist at Scale AI, I labeled complex datasets including images, videos, text, and audio for machine learning model training. I ensured high annotation accuracy and performed quality assurance reviews on peer-submitted work. I collaborated on refining annotation taxonomies and trained junior annotators. • Annotated multimodal datasets across autonomous vehicle, healthcare, and e-commerce domains • Exceeded quality benchmarks, maintaining a 98.5% accuracy rate • Conducted validation checks and corrected annotation errors for improved dataset reliability • Mentored and onboarded 15+ junior annotators on various annotation platforms

As a Senior Data Annotation Specialist at Scale AI, I labeled complex datasets including images, videos, text, and audio for machine learning model training. I ensured high annotation accuracy and performed quality assurance reviews on peer-submitted work. I collaborated on refining annotation taxonomies and trained junior annotators. • Annotated multimodal datasets across autonomous vehicle, healthcare, and e-commerce domains • Exceeded quality benchmarks, maintaining a 98.5% accuracy rate • Conducted validation checks and corrected annotation errors for improved dataset reliability • Mentored and onboarded 15+ junior annotators on various annotation platforms

2022 - Present

Data Annotation Specialist

AppenImagePolygon

While at Appen, I performed image and text annotation, including labeling bounding boxes, polygons, and semantic segments. My work involved multilingual datasets and numerous natural language processing applications. I maintained high inter-annotator agreement and adapted to client-specific annotation platforms. • Executed annotation tasks for computer vision and NLP projects • Labeled data for sentiment analysis and entity recognition tasks • Achieved a 96% inter-annotator agreement score • Processed images and texts using various interfaces and guidelines

While at Appen, I performed image and text annotation, including labeling bounding boxes, polygons, and semantic segments. My work involved multilingual datasets and numerous natural language processing applications. I maintained high inter-annotator agreement and adapted to client-specific annotation platforms. • Executed annotation tasks for computer vision and NLP projects • Labeled data for sentiment analysis and entity recognition tasks • Achieved a 96% inter-annotator agreement score • Processed images and texts using various interfaces and guidelines

2021 - 2022

Junior Data Annotator

LionbridgeImageBounding Box

As a Junior Data Annotator at Lionbridge, I was responsible for image and video labeling with bounding boxes, keypoints, and classification tags. I worked on data for autonomous driving and conversational AI models. I utilized professional annotation platforms and maintained comprehensive annotation logs. • Labeled images and videos for autonomous vehicle training • Annotated intent and entity data for chatbot development • Used Labelbox, CVAT, and proprietary tools for annotation tasks • Participated in calibration and consistency training sessions

As a Junior Data Annotator at Lionbridge, I was responsible for image and video labeling with bounding boxes, keypoints, and classification tags. I worked on data for autonomous driving and conversational AI models. I utilized professional annotation platforms and maintained comprehensive annotation logs. • Labeled images and videos for autonomous vehicle training • Annotated intent and entity data for chatbot development • Used Labelbox, CVAT, and proprietary tools for annotation tasks • Participated in calibration and consistency training sessions

2019 - 2020

Education

Work History