Julius Kelvin

Key Skills

Software

Appen

Scale AI

Top Subject Matter

Machine Learning and AI Training Data

Computer Vision and Conversational AI

Legal Services & Contract Review

Top Data Types

Image

Text

Document

Top Task Types

Object Detection

Bounding Box

Freelancer Overview

Freelance Data Annotator at Appen Connect. Brings 4+ years of professional experience across legal operations, contract review, compliance, and structured analysis. Core strengths include Appen and Scale AI. Education includes Bachelor of Science, University of Lagos (2023). AI-training focus includes data types such as Image and labeling workflows including Object Detection and Bounding Box.

Labeling Experience

Freelance Data Annotator at Appen Connect

AppenImageObject Detection

As a Freelance Data Annotator at Appen Connect, I annotated thousands of image and video frames for object detection and classification tasks, consistently achieving high quality scores. My responsibilities included transcribing and labeling audio clips and performing named entity recognition, sentiment labeling, and intent classification for text datasets. I regularly reviewed and validated data submissions from team members to ensure high-quality labeled data. • Annotated images and videos using bounding boxes and classifications • Labeled audio data for speech recognition in diverse conditions • Conducted NER, sentiment, and intent labeling on text • Led quality assurance by guiding and reviewing peer annotations

As a Freelance Data Annotator at Appen Connect, I annotated thousands of image and video frames for object detection and classification tasks, consistently achieving high quality scores. My responsibilities included transcribing and labeling audio clips and performing named entity recognition, sentiment labeling, and intent classification for text datasets. I regularly reviewed and validated data submissions from team members to ensure high-quality labeled data. • Annotated images and videos using bounding boxes and classifications • Labeled audio data for speech recognition in diverse conditions • Conducted NER, sentiment, and intent labeling on text • Led quality assurance by guiding and reviewing peer annotations

2024 - Present

Data Annotation Contributor at Scale AI / Remotasks

Scale AIImageBounding Box

As a Data Annotation Contributor for Scale AI / Remotasks, I completed image classification and bounding box annotation tasks for computer vision projects. I also transcribed and time-stamped audio for voice assistant AI training and labeled text data for large language model fine-tuning. I provided structured feedback to improve guideline clarity and reduce annotation errors. • Annotated images for classification and detection using bounding boxes • Transcribed and labeled audio datasets for speech AI • Labeled and validated text data for LLM fine-tuning projects • Consistently achieved high task completion and quality ratings

As a Data Annotation Contributor for Scale AI / Remotasks, I completed image classification and bounding box annotation tasks for computer vision projects. I also transcribed and time-stamped audio for voice assistant AI training and labeled text data for large language model fine-tuning. I provided structured feedback to improve guideline clarity and reduce annotation errors. • Annotated images for classification and detection using bounding boxes • Transcribed and labeled audio datasets for speech AI • Labeled and validated text data for LLM fine-tuning projects • Consistently achieved high task completion and quality ratings

2023 - 2023

Education

Work History