Kalaiselvan Thiyagarajan
120+ Completed Projects • 57+ Clients • 10+ Years Professional Experience • Dubai, UAE
Full-Stack Web & Mobile Developer specializing in PHP, Laravel, Node.js, Flutter, React, Vue, Docker, and AWS.
Notable Clients & Platforms
Organizations & platforms running production engineering by Kalaiselvan Thiyagarajan
Popular Releases • Featured Works
Major high-concurrency production deliverables & applicationsHR Direct Mobile Application
Flutter • Dart • iOS & Android Enterprise Workforce Mobility AppKFC Dubai Interactive Gaming Portal
Full-Stack Web • JavaScript • Brand Engagement & Real-Time ContestGaruda Flutter VPN Template
Flutter • Dart • Commercial VPN Client Architecture on EnvatoFitbit Smartwatch Clock Faces (Mandala & Black Pink)
Fitbit OS SDK • Real-Time Sensor Telemetry • Battery-Aware OLED ArchitectureDiscography • All Projects
Complete catalogue of 25+ verified applications, web portals & software toolsUAE National Day
PHP • Laravel • Web Portal
Amity Fintech Portal
Academic Fintech Web Platform
KFC Dubai Gaming
Interactive Campaign Web App
HR Direct App
Flutter • iOS & Android Mobility
Garuda VPN
Flutter • Network Platform Channels
Netflix Clone
Flutter Mobile • TMDB REST API
Fitbit Mandala
Smartwatch Sensor Face • Fitbit OS
Fitbit Black Pink
OLED Minimalist Watch Face
Auto Central UAE
Automotive Service Portal
Medait Group
Corporate Technology Platform
CERT Dubai
Educational Institutional Portal
Blanford Capital
Private Equity Investment Portal
Win Top Fruit
International Commerce Platform
Awad UAE
Corporate Services Portal
Buddy Meter Game
JavaScript • Interactive Web Game
PDF Converter Tool
PHP Document Engine Utility
GST Billing Lite
PHP • MySQL • ERP Invoicing
Vivaga Matrimony
Member Portal Architecture
VGrow Pharma
WordPress • Custom CMS Theme
Lotus Cars
Dealership Showroom Portal
Krishna Bed
Commercial Manufacturing Site
Shelomith Tech
Corporate IT Services Portal
Totoro Drawing
Pure CSS Art on CodePen
Desart Builders SEO
Technical Search Optimization
CMS Gallery
PHP • Modular Backend Architecture
Unlimited-OCR & Vision
Document Parsing • Adding Soon
Custom Agents & Vector DB
MCP Servers • zvec • Adding Soon
AI Automation & Intelligent Workflows
Passionate about exploring modern AI engineering — building custom agents, designing Model Context Protocol (MCP) servers, and streamlining production workflows with intelligent copilots and vector retrieval.Custom Agents Development
Engineering multi-agent execution loops, goal-driven prompt architectures, and tool-calling pipelines designed to automate developer tasks, testing routines, and background data processing.
Model Context Protocol (MCP)
Developing and wiring custom MCP servers to securely expose internal microservices, databases, documentation layers, and local tooling to modern LLM agents and IDE assistants.
Developer Copilots & Tooling
Optimizing engineering workflows with GitHub Copilot, Google Antigravity developer tools, structured prompt workflows, and automated CI/CD code quality reviews.
Vector Search & Document OCR
Experimenting with local vector databases (such as Alibaba's open-source zvec ecosystem), semantic similarity search, and high-throughput document OCR pipelines (such as Baidu's Unlimited-OCR) for intelligent data extraction.
Engineering Mindset: Practical Application over Hype
As a seasoned Full-Stack Engineer with a decade in production software, my focus is bridging rock-solid backend & frontend fundamentals with emerging AI automation — evaluating state-of-the-art open-source models, connecting APIs with MCP, and automating real engineering problems with speed and precision.
About Kalaiselvan Thiyagarajan
My name is Kalaiselvan Thiyagarajan (also known as Kalai selva). I am a Full-Stack Web & Mobile Developer with 10+ years of professional experience based in Dubai, UAE.
I design and build responsive, scalable digital products including Full-Stack Web Applications (PHP, Laravel, Node.js, REST APIs), cross-platform mobile applications using Flutter for Android and iOS, smartwatch applications for Fitbit, custom WordPress architectures, and DevOps automation.
Career Experience
Verified 10+ year track record in enterprise systems, mobile applications, and cloud architectureFull Stack Developer
- Architect and engineer enterprise full-stack web applications and digital platforms using Vue.js, React.js, Node.js, C#, .NET Core, MS SQL, and MongoDB.
- Design robust backend microservices, transactional endpoints, and high-availability data pipelines supporting mission-critical digital operations.
- Collaborate with cross-functional architecture and product teams to implement secure, modern, scalable digital solutions.
Senior Full Stack Developer
- Architected and delivered cross-platform Flutter mobile applications for Fintech, HR Direct, Accounts, and Payroll targeting Android and iOS.
- Engineered custom Payment Gateway Service using UPI payment flows (IppoPay), specifically architecting seller payout engines and secure transactional API endpoints.
- Designed and implemented event-driven microservices for real-time notifications, event processing, and streaming with Apache Kafka and RabbitMQ.
- Integrated enterprise ERP modules spanning inventory management, human resources, and financial accounting.
Full Stack Developer
- Developed and maintained high-traffic web applications using PHP, MySQL, Laravel, and customized WordPress architectures.
- Built and deployed secure Laravel-based eCommerce websites featuring payment gateway integrations (PayTabs, PayPal, CCAvenue) and single sign-on (SSO) APIs.
- Engineered custom WordPress themes, plugins, custom post types, and API integrations ensuring high-speed Core Web Vitals performance.
Full Stack Developer
- Developed and deployed full-stack Angular, CodeIgniter, and Laravel-based eCommerce websites with payment gateways and catalog workflows.
Full Stack Developer
- Engineered web applications and responsive interfaces with HTML, CSS, JavaScript, jQuery, and Bootstrap.
- Built backend solutions using PHP, CodeIgniter, Angular, and Laravel frameworks.
- Developed GST billing systems, high-volume bulk SMS messaging platforms, and payment gateway solutions for e-commerce.
Verified Certifications
Industry credentials in distributed streaming, cloud technologies, and software engineeringAcademic Foundation
Formal qualifications in computer science and technologyTechnical Skills & Stack
Core languages, enterprise frameworks, distributed systems, and cloud infrastructureBackend & Distributed Systems
Frontend & Reactive UI
Mobile, Wearables & Cross-Platform
Cloud, Streaming & DevOps
AI Agents, Vector DBs & Vision
Get In Touch
Direct Contact
Reach out directly via email, phone, or message.