Nehemiah G.
AI Data Annotation Specialist | ML Dataset Validation & QA Expert
If your machine learning models are failing to perform in production, you don’t have an algorithm problem. You have a garbage-data problem. AI models are only as good as the datasets they are trained on, and unoptimized data causes severe project bottlenecks. What I Offer: I provide high-precision, end-to-end dataset preparation, labeling, and quality validation for complex computer vision and NLP systems. With 8+ years of hands-on experience handling large-scale machine learning data pipelines, I specialize in building, structuring, and verifying high-quality training sets across image, video, audio, and text formats. How This Helps Your Team: I step into your data pipeline to handle the heavy lifting of collection, precise labeling, and quality assurance. By cleaning datasets, eliminating tracking errors, and performing strict consistency checks, I guarantee that the training data feeding your models is 100% production-ready, error-free, and aligned with your project’s unique technical guidelines. Why Your Project Needs This Right Now: • Eliminate Pipeline Friction: Engineers waste valuable time cleaning data instead of optimizing models. I take over the entire pipeline—from initial semantic segmentation to final validation—allowing your development team to focus exclusively on training. • Prevent Costly Training Errors: Inaccurate annotations (like misaligned bounding boxes or faulty keypoints) lead to massive model drifting. My rigorous QA checks catch inconsistencies early, saving your company thousands of dollars in wasted compute time. My Core Data Solutions: • Computer Vision Annotation: Highly accurate bounding boxes, polygons, semantic segmentation, cuboids, and video object tracking. • Text & Audio NLP Processing: Advanced entity tagging, sentiment analysis, transcription, and conversational audio segmentation. • Dataset Cleaning & QA Checks: Systematic error detection, formatting checks, and rigorous dataset validation to remove data anomalies. Tools & Platforms: CVAT, Labelbox, Roboflow, Label Studio, Supervisely, SuperAnnotate, Segments.ai, Hasty.ai, and Single Review Tool (SRT). 📩 Don't risk your model's performance on unverified data. Send me a message or invite me to your project today, and let's get your datasets clean, structured, and ready to train!
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $79
Billed in all: $1,042$1k
$26 in the last 6 months
Earnings, last 30 days
Skill rankings: Top 38% in Machine Learning
Ranked by MRR among everyone on Upwork with the skill.
- #37Image Analysis67 freelancers · 🇰🇪 #2Top 55%🇰🇪#2 of 3
- #68Labelbox102 freelancers · 🇰🇪 #5Top 67%🇰🇪#5 of 5
- #73Roboflow98 freelancers · 🇰🇪 #5Top 74%🇰🇪#5 of 6
- #146CVAT204 freelancers · 🇰🇪 #5Top 72%🇰🇪#5 of 6
- #292Video Annotation464 freelancers · 🇰🇪 #13Top 63%🇰🇪#13 of 21
- #396Image Annotation592 freelancers · 🇰🇪 #12Top 67%🇰🇪#12 of 18
- #517Audio Recording1,127 freelancers · 🇰🇪 #1Top 46%🇰🇪#1 of 2
- #607Content Moderation1,144 freelancers · 🇰🇪 #7Top 53%🇰🇪#7 of 10