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Lufafa Joshua

Lufafa Joshua

AI Developer and Trainer - Machine Learning Systems

UGANDA flag
Kampala, Uganda
$28.00/hrIntermediateRoboflowCVATLabel Studio

Key Skills

Software

RoboflowRoboflow
CVATCVAT
Label StudioLabel Studio

Top Subject Matter

No subject matter listed

Top Data Types

Computer Code ProgrammingComputer Code Programming
ImageImage
VideoVideo

Top Label Types

Bounding Box
Classification
Computer Programming Coding
Segmentation

Freelancer Overview

Data Annotation Specialist with strong proficiency in applying consistent and accurate labels across diverse datasets. Experienced in bounding boxes, polygons, keypoint detection, instance/semantic segmentation, and transcription. Collaborative team contributor, detail-oriented, experienced with industry tools including CVAT, Label Studio, Labelbox, and Roboflow. AI Developer & Trainer with a strong passion for building, training, testing and deploying machine learning and deep learning systems with hands on experience in fine-tuning state of the art NLP and computer vision models using frameworks like PyTorch, TensorFlow, Hugging Face, and RoboFlow , optimizing and deploying inference pipelines. I Combine a solid software engineering foundation and a passion for solving real-world problems with practical AI solutions.

IntermediateEnglish

Labeling Experience

Roboflow

Pizza segmentation

RoboflowImageSegmentation
Use segmentation to clearly annotate pizza to prepare data data for a pizza segmentation model trained available on Roboflow Universe.

Use segmentation to clearly annotate pizza to prepare data data for a pizza segmentation model trained available on Roboflow Universe.

2025
Roboflow

Plane Aerial Detection

RoboflowImageBounding Box
Identify the planes using bounding box in the aerial images provided to create a dataset on Roboflow Universe for the purpose of training a custom RF-DETR model to detect planes in aerial images.

Identify the planes using bounding box in the aerial images provided to create a dataset on Roboflow Universe for the purpose of training a custom RF-DETR model to detect planes in aerial images.

2024
CVAT

Motor Vehicle Detection

CVATImageBounding Box
Use bounding boxes to annotate cars, buses, ambulances, motorcycles and trucks in the provided images using CVAT as an annotation tool.

Use bounding boxes to annotate cars, buses, ambulances, motorcycles and trucks in the provided images using CVAT as an annotation tool.

2025 - 2025
Label Studio

Violence Detection

Label StudioVideoBounding Box
Use bounding box to determine the violent and non violent characters in the video caption with label studio.

Use bounding box to determine the violent and non violent characters in the video caption with label studio.

2025 - 2025
CVAT

Athlete Object detection

CVATVideoBounding Box
Use bounding box to annotate the runner inside the provided video caption. The dataset was exported in COCO format and uploaded and available on Kaggle.

Use bounding box to annotate the runner inside the provided video caption. The dataset was exported in COCO format and uploaded and available on Kaggle.

2025 - 2025

Education

K

Kyambogo University

Bachelor of Science, Computer Science

Bachelor of Science
2016 - 2019

Work History

D

Django

Full Stack Software Developer

Kampala
2019 - Present
J

Joinable AI Labs

AI Developer

Kampala
2019 - Present