Innovating at the Intersection of XR, AI & HCI
Designing intelligent immersive experiences that redefine how humans interact with technology.

Welcome to my website!
I’m Varun Siddaraju, the Founder of VeeRuby, and an XR + AI Researcher & Prototyper passionate about shaping the future of human-computer interaction.
I design, build, and research next-generation immersive experiences that help businesses, educators, and innovators leverage Extended Reality (XR) and Artificial Intelligence (AI) to solve real-world challenges, accelerate growth, and unlock new possibilities.
Featured In:
From esteemed institutions to global corporations, I’ve been featured in prominent magazines, felicitated, and recognized by leading tech companies.







Varun Kumar Siddaraju
Founder & CEO | XR + AI Researcher | Product & Program Manager | Prototyper & Developer
Hey there 👋 I’m Varun Siddaraju, a Founder, Researcher, and Prototyper passionate about blending Extended Reality (XR) and Artificial Intelligence (AI) to shape the future of human–computer interaction.
With 8+ years in research, engineering, and product leadership, I’ve built and led the creation of immersive, intelligent applications and XR platforms. My work bridges innovation and usability—turning ideas into experiences that redefine how people learn, work, and connect.

Bridging Research and Execution in XR + AI: Turning Visionary Concepts into Market-Ready Innovations
Founder & CEO
Visionary leader driving XR + AI innovation and cross-industry impact.
XR + AI Researcher
Exploring human–AI interaction and immersive design to build the next wave of intelligent experiences.
Product & Program Manager
Leading multi-disciplinary teams to deliver scalable, human-centered XR + AI products.
XR + AI Prototyper | Developer
Transforming ideas into working XR + AI prototypes that push boundaries.
XR & AI Consultant
Helping organizations leverage immersive and intelligent technologies to solve real-world challenges.
Beginning Windows Mixed Reality Programming: For HoloLens and Mixed Reality Headsets 2nd Edition

Unlock the power of Windows Mixed Reality with this comprehensive guide. Perfect for both beginners and seasoned developers, this book provides everything you need to create immersive experiences for HoloLens and Windows Mixed Reality headsets.
What You’ll Learn:
- Rapid Prototyping: Quickly turn ideas into interactive applications for HoloLens 2 and other devices.
- Unity Mastery: Build engaging 3D environments with Unity.
- Advanced Features: Integrate spatial sound, voice commands, gestures, hand tracking, and eye tracking.
- Toolkit Utilization: Leverage Microsoft’s Mixed Reality Toolkit and other development tools.
- Publishing & Monetizing: Navigate publishing on the Windows Store and explore monetization strategies.
Ideal For:
Programmers eager to dive into Mixed Reality development or those looking to enhance their VR/AR skills. This book is your gateway to mastering cutting-edge technology and creating innovative Mixed Reality applications.
















Helping Businesses and Individuals Harness the Power of Immersive Technology
Harmony XR + AI Framework
Blends Extended Reality with Artificial Intelligence to create smart, adaptive, and human-centered immersive experiences for learning, training, and real-time interaction. (Work in progress)
PSLAR
An AR-based research project that enhances psychomotor skill learning through real-time visual feedback and adaptive training experiences.
AR Indoor Ray Tracing
Conducted research on the development of specialized algorithms for mobile and augmented reality applications, optimizing computational efficiency and performance.
NY City AR Viewer
Developed an augmented reality experience that overlays 3D landmarks and skyline data across New York City, allowing users to explore urban architecture interactively through mobile AR visualization.
Industrial VR Welding Simulation
Dive into a safe, high-fidelity VR environment where trainees master real-world welding techniques with live feedback, motion tracking & analytics.
LabXR
Step into immersive XR labs—experiment virtually, learn safely, and explore science beyond the textbooks.
Helping Businesses and Individuals Harness the Power of Immersive Technology
Varun delivered exceptionally high-quality 3D models for HoloLens and brought my concepts to life with accuracy. He iterated quickly based on feedback and made the entire process smooth and stress-free. I highly recommend him for mixed-reality development and creative XR solutions.
Varun and his team provided outstanding AR/VR development support that exceeded our expectations. They were highly responsive, flexible, and professional throughout the project. The final output was exceptional, and we’re grateful for their dedication. Truly recommended for immersive tech work.
Varun’s AR/VR consulting expertise brought immense value to our project. His technical depth, creativity, and forward-thinking approach helped us shape a strong strategy in the immersive tech space. He offered clear insights and delivered with precision. A true visionary in this field.
Harness the Power of XR + AI: Unlock Insight at the Frontier of Immersive Interaction
- Blog

The XR industry has moved beyond the hype. In 2025, extended reality is shifting from flashy demos to real-world impact—transforming...
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- Blog

Intelligent spatial interfaces go beyond visuals — they sense context, understand human behavior, and adapt...

In a world where technology often races ahead of humanity, my work sits at the...

My initial dive into the Meta Quest 3 world has been an exciting mixed reality...