Building the Future
with AI & Machine Learning
|
Kumar Katariya — Top Rated Plus AI/ML Engineer on Upwork, turning complex AI challenges into production-ready solutions.
Verified Credentials & Achievements
Top Rated Plus
Upwork · Top 3% Globally
Verified100% Job Success
117 Jobs · $400K+ Earned
Perfect ScoreKaggle Expert
Rank 2,375 / 61,099 · Top 4%
6 Bronze MedalsIBM Certified
Machine Learning & Data Science
Professional CertWhat I Build
AI & ML Services
From ideation to production — full-stack AI solutions that solve real problems and deliver measurable results.
AI Agent Development
Multi-agent systems and autonomous AI workflows built with LangChain, CrewAI, and Claude API to automate complex business processes.
RAG & LLM Applications
Custom chatbots and document Q&A systems using Retrieval-Augmented Generation with ChromaDB, Pinecone, and vector databases.
Machine Learning Solutions
Predictive models, classification and regression systems using state-of-the-art ensemble methods for real business impact.
Deep Learning
Neural networks and transfer learning solutions with PyTorch and TensorFlow — from transformers to custom CNN architectures.
Computer Vision
Image classification, object detection, and medical imaging AI using the latest CNN architectures.
Data Science Consulting
End-to-end EDA, feature engineering, statistical analysis, and business insight dashboards.
Speech & Audio AI
Speech emotion recognition and audio classification using wav2vec2 and advanced audio processing.
NLP & Text Analytics
Sentiment analysis, named entity recognition, and text classification pipelines powered by Hugging Face transformers.
Mobile App Development
Native iOS and Android applications with Swift and Kotlin, including AI-powered features and seamless UX/UI design.
Real Projects, Real Results
Featured Portfolio
Every project ships to production. Explore the work — live demos and source code included.
RAG
Architecture
6
Pipeline Steps
1,000
Chunk Size (chars)
Free
Deployment Cost
RAG Document Chatbot
End-to-end AI system that answers questions from any PDF document in seconds using Retrieval-Augmented Generation — deployed live on Streamlit Cloud.
86.22%
Test Accuracy
+48pp
vs Baseline CNN
5,216
X-rays Trained
4 Days
Build to Deploy
Chest X-Ray Pneumonia Detector
Transfer learning AI classifying chest X-rays as PNEUMONIA or NORMAL with 86.22% accuracy — deployed live on Render.com, built in 4 days.
0.9367
XGBoost AUC
6,819
Companies Analysed
94
Financial Features
4
ML Models Tested
Company Bankruptcy Prediction
AI early-warning system for financial distress — XGBoost AUC 0.9367 across 6,819 companies and 94 financial features including Altman Z-Score inspired ratios.
85–92%
Target Accuracy
960h
Pre-training Audio
<500ms
Inference Latency
0
Manual Features Needed
Speech Emotion Recognition
Deep learning system recognising human emotions from raw audio using state-of-the-art wav2vec2 transformer architecture.
Rank 21
out of 4,329 Teams
Top 0.5%
Global Percentile
97.27%
CV Accuracy
8
Behavioural Features
Kaggle — Personality Prediction (Rank 21)
ML competition predicting introvert vs extrovert from 8 behavioural features — ranked 21st out of 4,329 teams (top 0.5%) with 97.27% accuracy.
4
Market Regimes
5+
Performance Metrics
Interactive
Plotly Dashboards
Real-time
Anomaly Flagging
Trader Behavior Insights
Advanced trader performance and behavioural analysis across multiple market sentiment regimes.
#1
Google Play Wellness
iOS+Android
Platforms
Meditation
App Type
Greece
Primary Market
Mindfulness Greece
Meditation and mindfulness app that reached No.1 on Google Play Store in the Wellness category.
Fleet
Management
NZ Market
Region
iOS+Android
Platforms
Logistics
Category
MyTrucking 2.0
Fleet management and trucking logistics platform built for the New Zealand market.
Marketplace
Type
iOS+Android
Platforms
Bicycles
Category
Global
Reach
Bicycle Exchange Sprocket
Bicycle marketplace for buying and selling bikes and parts globally.
Education
Sector
iOS
Platform
Behavior
Tracking
Clinical
Use Case
ABC Observe
Behavior observation and tracking tool designed for educators and therapists.
Healthcare
Sector
iOS+Android
Platforms
Clinical
Use Case
Education
Also Used In
Behavior Observation Made Easy
Professional behavior observation and data collection tool for clinical settings.
Nursing
Category
iOS+Android
Platforms
Healthcare
Sector
Education
Use Case
Pre-RN Check Off
Nursing skills checklist and verification app for nursing students preparing for practice.
Competitive Machine Learning
Kaggle Rankings
Consistently placing in the top percentile against thousands of data scientists worldwide.
Personality ML
Predict Introverts vs Extroverts
Rank
#21
/ 4,329 teams
Top 0.5%Ahead of 100% of participants
Expert Tier
Kaggle Notebooks Expert
Rank
#2,375
/ 61,099 teams
Top 4%Ahead of 100% of participants
6× Bronze Medals
Notebooks & Competitions
10 Competitions
Completed end-to-end
Expert Notebooks
High-vote ML notebooks
About Me
Turning AI Research
into Business Value
I'm Kumar Katariya — an AI/ML Engineer building production-grade intelligent systems. Based in Ahmedabad, India, I work with clients globally to solve their hardest problems using the latest in AI, LLMs, and data science.
As a Top Rated Plus freelanceron Upwork (Top 3% globally), I've delivered 117+ projects across industries including healthcare, finance, e-commerce, and enterprise — maintaining a perfect 100% Job Success Score throughout.
My expertise spans the full AI stack: from architecting multi-agent systems and RAG pipelines to training deep learning models and deploying them to production. I'm also a Kaggle Notebooks Expert (Top 4% globally) and IBM Certified in Machine Learning.
117+
Projects Delivered
$400K+
Earned on Upwork
100%
Job Success Score
Top 3%
Upwork Globally
Client Reviews
What Clients Say
100% Job Success Score across 117+ projects. Here's what a few clients had to say.
“Kumar acted with utmost professionalism and skill, working tirelessly to complete the project according to my standards. Highly recommended for any AI or ML project.”
Erika Shapiro
CEO, Study Song LLC
“Kumar and his team did a wonderful job. I now consider them an extension of my team. Their expertise in AI and attention to detail is outstanding.”
Zhanna Shekhtmeyster
Founder, ABC Observe
“Our app is No.1 in the Google Play Store in the Wellness category. Huge success from zero experience! Kumar's team delivered beyond expectations.”
Themis Vasarmidis
Founder, Mindfulness Greece
“Excellent work from Kumar and Team. The AI solution they built has transformed our workflow. Will definitely hire again and again.”
Simon Islam
CEO, Fair Pattern
Tools & Technologies
Tech Stack
Battle-tested tools across the full AI/ML engineering pipeline.
AI / LLMs
ML / DL Frameworks
Vector Databases
Languages & Data
Backend & APIs
Frontend & Mobile
DevOps & Cloud
Let's Build Together
Start Your AI Project
Tell me about your project and I'll get back to you within 24 hours with a plan.
Phone
+91-910 693 9053Location
S.G Road, Ahmedabad 380051, India
⚡ Fast response: I typically reply within a few hours during IST business hours (Mon–Sat, 9am–7pm).