About DeeLab

DeeLab delivers high-quality, human-led data annotation services that power AI and machine learning applications across industries.

Founded in 2023 as a business unit of Tailjay, DeeLab is based in Singapore and operates globally. We work across a wide range of data types — including 3D LiDAR, audio, images, video, and text.

Through DeeLab Academy, our in-house training and certification program, we equip professional annotators and client teams with practical skills and QA know-how.

Get to Know Us

DeeLab Hannah bw 1

Hannah Ndulu

Project Lead

Hannah is DeeLab’s Project Lead. Based in Kenya, she oversees daily operations, leads our core annotation team, and ensures projects are delivered with consistency and care.

With a background in bookkeeping and solid expertise in data annotation and web research, she brings a meticulous, detail-driven approach to every task.

As Head of Training at DeeLab Academy, Hannah designs and runs our training and certification program — equipping annotators with practical skills to work on real client projects and uphold high quality standards.

“I’m passionate about bringing precision and quality to every project we undertake. I’m dedicated to ensuring that our services fuel innovation, drive insights, and deliver value to our clients.”

Kari is the founder of DeeLab and also the founder & CEO of Tailjay, a Singapore-based venture builder operating globally. 

At DeeLab, Kari leads a growing team of professionals focused on high-quality data annotation and project-based support for AI and machine learning applications.

Kari’s background spans startup operations, team building, and digital strategy. He believes in practical solutions, lean systems, and continuous improvement — and he brings this mindset into every project.

“We work with real data, real teams, and real deadlines. Our job is to make complexity manageable, and to deliver quality that holds up — not just in demos, but in the wild.”

Our Work

DeeLab Academy, image annotation training: Polygon labeling applied to cars, bicycles, and street environment in an urban scene.

Image Annotation Training Highlights

Image Labeling Essentials is one of DeeLab Academy’s recently launched certification courses. This 5-day image annotation training focuses on core labeling methods used in machine learning—especially in computer vision tasks like object detection, pose estimation, and image segmentation.

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DeeLab Portfolio

DeeLab Portfolio

DeeLab portfolio showcases the range of data annotation projects our team and contributor network have worked on, across industries including healthcare, retail, automotive, logistics, and media.

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Join us on our exciting journey! We’re on the lookout for talented individuals to join our diverse, globally distributed team. Whether you’re an experienced data annotator, a machine learning enthusiast, or simply someone with a passion for AI, we invite you to become a part of our incredible adventure.

DeeLab, Data Annotation services. Close-up of fabric with a clothing tag reading “73% Cotton, 22% Polyester, 5% Lycra,” overlaid on the left with machine learning code, symbolizing the mix of natural and synthetic elements in both textiles and data.
Machine Learning
Hannah Ndulu

The Rise of Synthetic Data in AI

Synthetic data is artificially generated but realistic enough to train AI models. It can speed up training, protect privacy, and create rare scenarios, though it can also be too perfect or miss important real-world details.

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Boy staring intently at a tablet screen, symbolizing the need for safe and responsible content moderation online.
Data Annotation
Hannah Ndulu

AI Content Moderation

The internet moves too fast for human-only moderation — and AI systems trained on human-labeled data now play a key role in detecting harmful content. But even with the best annotations, AI can miss context, nuance, and intent. 

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