XR + Full-Stack Product Engineer
Good evening

SENTHAMIZH
SELVAN STALIN

I ship production-grade VR/AR, SaaS, and IoT products end-to-end.

Explore My WorkLet's Connect
Experience
8+ Years
Products Shipped
6+ Live
Focus Areas
XR, SaaS, IoT
Philosophy
Privacy-First
01. Evolution

The Journey

2017-2019

XR Pioneer

Started the journey into immersive dimension, exploring the potential of Virtual Reality.

  • Started with Google Cardboard experiments
  • Developed first VR training applications
  • Mastered Unity & Unreal Engine fundamentals
  • Built prototypes for educational institutions
2019-2021

XR Specialist

Deepened expertise in Mixed Reality and cross-platform experiences.

  • Delivered 50+ XR projects for various clients
  • Specialized in HoloLens Mixed Reality solutions
  • Pioneered WebXR & cross-platform implementations
  • Optimized 3D pipelines for mobile performance
2021-2023

Full-Stack Evolution

Bridged the gap between 3D worlds and robust web infrastructure.

  • Mastered Backend Architecture (Node.js, Deno 2.6)
  • Adoption of Modern Frontend (React 19, Next.js)
  • Implemented DevOps & Cloud Infrastructure
  • Built scalable APIs for data-heavy applications
2023-Present

Product Engineer & Founder

Building the future of SaaS by combining XR, IoT, and AI.

  • Founded ATSAE to build proprietary products
  • Launched multiple SaaS products (TrulyMenu, BrandEZ)
  • Integrated Hardware (IoT) with Software Ecosystems
  • Leveraging AI for augmented workflows
02. Arsenal

Tech Universe

The tools and technologies I use to bring ideas to life. From immersive 3D worlds to robust backend infrastructure.

UnityExpert
Unreal EngineAdvanced
WebXRExpert
Three.jsAdvanced
BlenderIntermediate
A-FrameAdvanced
ReactExpert
Next.jsExpert
Tailwind CSSExpert
TypeScriptExpert
Framer MotionAdvanced
ZustandExpert
Node.jsExpert
DenoAdvanced
PostgreSQLAdvanced
SupabaseExpert
HonoAdvanced
GraphQLIntermediate
DockerAdvanced
KubernetesIntermediate
GitHub ActionsAdvanced
TraefikAdvanced
Hetzner CloudAdvanced
ESP32Advanced
Raspberry PiExpert
ArduinoExpert
NFCExpert
3D PrintingIntermediate
OpenAI APIAdvanced
LangChainIntermediate
OllamaAdvanced
Stable DiffusionIntermediate
Vercel AI SDKAdvanced
03. Portfolio

Case Files on the Workbench

Spread out the work. Open any file to trace the journey from sketches and flow maps to wireframes and the final UI.

Tap a file to open the process.Each file reveals sketches, flows, wireframes, and final UI.

Case file

TrulyMenu

QR + NFC Restaurant Ordering System

Featured

A comprehensive digital menu solution for restaurants integrating QR codes and NFC technology for seamless ordering.

SaaSIoTNFCNext.js
Sketch

Idea capture

Table-side ordering concept

Rough sketches mapping QR + NFC triggers and frictionless menu browsing.

Flow

System map

Order-to-kitchen flow

Diagramming guest, server, and kitchen handoffs with payments and ticketing.

Wireframe

Structure

Menu, cart, and staff views

Low-fi screens for menu browsing, cart edits, and staff order management.

Final UI

Polish

Mobile-first live UI

Polished interface with brand theming, live status updates, and NFC entry points.

Visit LiveFull case study
View All Products
04. Capabilities

What I Build

I don't just write code; I engineer complete solutions. Here are my core areas of expertise.

XR Systems

Designing immersive VR training simulations and web-accessible AR product visualizations.

UnityWebXRThree.jsShader Programming

SaaS Architecture

Building scalable, multi-tenant platforms with robust authentication and payment infrastructures.

Next.jsMicroservicesPostgreSQLStripe

IoT & Hardware

Bridging physical and digital worlds with custom ESP32 firmware and hardware-app bridges.

C++MQTTPCB DesignEmbedded Systems

AI Automation

Integrating LLMs into workflows for intelligent content generation and customer support.

LangChainOpenAI APIVector DBsPrompt Engineering

Design Systems

Crafting consistent, accessible, and beautiful UI languages that scale across products.

FigmaTailwind CSSStorybookAccessibility (WCAG)

DevOps & Infra

Orchestrating self-hosted environments with Docker and CI/CD pipelines for maximum control.

DockerKubernetesGitHub ActionsLinux Administration
05. Physical Digital

Hardware & IoT

Bridging the gap between the digital and physical worlds. I design and build connected devices that solve real-world problems.

Interactive • Drag to Rotate

Custom Firmware

Optimized C++ firmware for ESP32 & STM32, focused on low power consumption and reliability.

IoT Protocols

Expertise in MQTT, CoAP, and WebSockets for real-time device communication.

Connectivity

Seamless integration of BLE, Wi-Fi, and NFC for frictionless user interactions.

Hardware Design

End-to-end prototyping from breadboard to custom PCB and 3D printed enclosures.

06. Connect

Let's Build Together

Have an idea that needs engineering? Or a problem that needs solving? I'm always open to discussing new opportunities, collaborations, or just geek out about the latest tech.

Based in

Chennai, India (IST)

Follow me

Message Sent!

Thanks for reaching out! I'll get back to you as soon as possible.

07. Philosophy

How I Build

Privacy First

I believe in building software that respects user agency. No tracking pixels, no invasive analytics, just pure functionality.

Self-Hosted First

Empowering users to own their infrastructure. My solutions are designed to be deployable anywhere, from a Raspberry Pi to a Kubernetes cluster.

Open Source Friendly

Collaboration fuels innovation. I actively contribute to the ecosystem and build with transparency at the core.