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U
Ugochukwu O.

Ugochukwu O.

Visual Annotation Specialist | Data Annotator

Nigeria flagLagos, Nigeria

Key Skills

Software

LabelboxLabelbox
CVATCVAT
Label StudioLabel Studio

Top Subject Matter

Computer Vision / AI-ML Image Dataset Creation

Top Data Types

ImageImage
VideoVideo
AudioAudio

Top Task Types

SegmentationSegmentation
Bounding BoxBounding Box
PolygonPolygon
Point/Key PointPoint/Key Point
Object DetectionObject Detection
Question AnsweringQuestion Answering
Text GenerationText Generation
RLHFRLHF
ClassificationClassification
PolylinePolyline
CuboidCuboid
Entity (NER) ClassificationEntity (NER) Classification
TranscriptionTranscription
Data CollectionData Collection
Fine-tuningFine-tuning
Text SummarizationText Summarization

Freelancer Overview

Visual Annotation Specialist | Data Annotator — Beyond Human Intelligence (Remote). Brings 3+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Labelbox, CVAT, and Label Studio. Education includes Bachelor of Engineering, University of Benin (2018) and Secondary School Education, Federal Government College, Warri (2010). AI-training focus includes data types such as Image and labeling workflows including Segmentation.

Labeling Experience

Labelbox

Visual Annotation Specialist | Data Annotator — Beyond Human Intelligence (Remote)

LabelboxLabelboxImageImageSegmentationSegmentation

Visual Annotation Specialist / Data Annotator producing guideline-compliant labels for AI and machine learning computer vision datasets. Annotated large-scale images using bounding boxes, polygons, and segmentation masks to support model development and evaluation. Performed image sorting, filtering, and QA-calibration collaboration to maintain high accuracy and dataset consistency. • Applied bounding boxes, polygon labeling, and segmentation masks • Sorted, analyzed, and filtered high volumes of images for quality • Used logical reasoning to decide labels for ambiguous or edge cases • Collaborated with data scientists and engineers during QA calibration sessions

2023 - Present

Education

U

University of Benin

Bachelor of Engineering, Production Engineering

Bachelor of Engineering
2012 - 2018
F

Federal Government College, Warri

Secondary School Education, Engineering Science

Secondary School Education
2006 - 2010

Work History

S

Self-Employed

Freelance Graphic Designer

Lagos
2021 - Present
L

Lagos Traffic Radio

Maintenance Engineer

Lagos
2022 - 2025