I’m a 19-year-old software engineering student focused on building production-grade systems. While most projects at this stage revolve around surface features, I’m drawn to the structural side of engineering — architecture, data integrity, and long-term reliability.
I design systems with governance in mind. Role-based access control, auditability, offline-first resilience — not as add-ons, but as foundational decisions. I’m interested in how software behaves under stress, misuse, and real-world constraints.
My long-term direction is AI-driven SaaS and infrastructure-level systems that solve operational problems at scale. I’m building now with that future in mind.
A comprehensive Java-based e-commerce platform. Features advanced product filtering, session-based persistent carts, and a secure admin dashboard powered by Hibernate and JAX-RS.
High-performance Point of Sale (POS) application built with Flutter. Offers smart barcode scanning, real-time inventory tracking, and biometric role-based access control via Firebase.
A dynamic software agency offering high-performance web development, mobile apps, and POS systems. Engineered with React and Next.js for maximum speed, SEO optimization, and enterprise-grade reliability.
The gold standard offline-first fitness center management system. Combines Java 21 architecture with a Python-based facial recognition engine using dlib for sub-200ms biometric check-ins.
End-to-end type safety. Used heavily in React interfaces and Node.js backend logic to eliminate fatal runtime errors early.
Component-driven UI architecture and advanced state management.
Production-grade React framework for SSR, static generation, and API routes.
Ultra-fast static site builder with island architecture and zero-JS defaults.
Scalable V8 runtime for blazing fast backend APIs and microservices.
Cross-platform mobile applications crafted with precise, 60FPS UI rendering capabilities.
Native iOS development with high-performance memory safety and modern syntax.
Enterprise-grade architecture logic and heavy data processing.
Robust framework for building production-ready microservices and enterprise backends.
AI integration, machine learning pipelines, and scripting automation.
Workflow automation tool for connecting complex APIs and building service integrations.
Relational database structuring, indexing, and complex data retrieval.
Server-side scripting for full-stack web applications and API development.
Elegant PHP framework for rapid full-stack web development with expressive ORM and routing.
Containerization strategy for resilient local deployments and scalable architecture.
Utility-first architecture for responsive and maintainable frontend execution.
A collection of free, client-side, highly-performant utilities. Fast, ad-free, and respectful of your privacy.
What does Senan Thewnaka specialize in?
Senan specializes in offline-first system architecture, enterprise mobile applications built with Flutter, high-performance Java backends, and facial recognition / biometric security systems. His focus is structural engineering — designing software that remains reliable under stress, misuse, and real-world constraints.
What technologies does Senan Thewnaka use?
Primary stack: Java 21 / JavaFX, Flutter & Dart, TypeScript / React / Next.js, PHP 8.2 / Laravel, Python (OpenCV, dlib, Flask), Firebase, and SQLite. For infrastructure: Docker, Vercel, and Astro. All projects are production-grade, not prototypes.
Is Senan Thewnaka available for freelance work?
Yes. Senan is open to select freelance engagements and collaborations, particularly in system architecture, enterprise mobile development, and backend engineering. Contact via [email protected].
Who is Senan Thewnaka?
Senan Thewnaka is a software engineering student from Sri Lanka building production-grade systems at 19. He founded Synthora, a software agency, and has shipped projects spanning biometric gym management, Flutter POS apps, AI developer tools, and full-stack commerce platforms.
Whether it's scalable infrastructure, pixel-perfect frontend, or fixing legacy monoliths. I'm ready to build. Drop a message below or connect via socials.