(About / 01)Engineer / builder / curious human

Curious bydefault. Preciseby design.

Software Engineer and AI Engineer from Sri Lanka. I build high-performance systems, useful intelligence and interfaces that respect the person using them.

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Portrait of Chethiya Rathnasekara
Chethiya RathnasekaraSri Lanka / 2026

I'm Chethiya, a software engineer and AI engineer who cares about how things work and how they feel.

I am a Software Engineer and AI Engineer studying Software Engineering at the Java Institute for Advanced Technology since 2023, based in Sri Lanka. I engineer high-performance desktop applications, deep learning and AI systems, and modern full-stack web platforms with clean code, sub-second execution speeds and zero bloat.

To date, I have engineered and released 8+ production-ready personal systems. My flagship desktop application, Traders Journal, syncs live MetaTrader 5 deals in under 100 ms with zero manual setup and tracks daily PnL calendars, equity curves and 15+ risk metrics completely offline.

For commercial retail operations, I built a desktop POS and Inventory Management System in Java Swing with FlatLaf, JasperReports and barcode checkout completing in under 3 seconds per sale. On the web, I architect full-stack applications with Next.js, React, Node.js and TypeScript, backed by MySQL, PostgreSQL, SQLite and Supabase.

In AI and computer vision, I engineered a CUDA-accelerated Real-ESRGAN 4K 60 FPS video super-resolution pipeline with multi-threaded FFmpeg processing, tripling batch rendering throughput. I build production AI agents, prompt architectures and full-stack intelligent applications using Google AI and PyTorch.

Chethiya Rathnasekara.

Software engineer & AI engineer. Curious builder.

"The best engineering is felt before it is noticed. It gives people momentum instead of making them think about the machine."
BaseSri Lanka
FocusSoftware / AI / Product
EducationSoftware Engineering / 2023-now
Credentials14 verified / Google / Oracle / Aviatrix

The toolkit.

Tools are only part of the practice
LanguagesJava / Python
TypeScript / JavaScript
FrontendNext.js / React
Tailwind / PWA
BackendNode.js / Express
Java EE / REST APIs
DesktopElectron / Swing
JavaFX / MQL5
DataMySQL / PostgreSQL
SQLite / Supabase
CloudOracle OCI / APEX
Docker / GitHub Actions
AI / VisionPyTorch / CUDA
Real-ESRGAN / GPT-4o
MediaFFmpeg / Docker
Batch pipelines

Verified,not vibes.

14 credentials from Google, Coursera, Oracle and Aviatrix, with official PDFs and public verification records.

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Google AI Professional Certificate8 Google AI specialist badgesOracle APEX Professional3x OCI AssociateAviatrix ACE