Available for new opportunities

Yasas Pasindu Fernando

Software Engineer at IdeaHub - backend Java for enterprise digital banking, plus own products and freelance client systems.

Software Engineer at IdeaHub. Digital banking APIs, Yasaboy.com, Smart AAC, and freelance client systems.At IdeaHub I contribute to enterprise digital banking platforms for HNB and DFCC - Spring Boot, REST APIs, and evidence-based production support. I also ship Yasaboy.com (Cloudflare-verified 115K+ monthly pageviews), Serixa, and Smart AAC, and take freelance client work such as Chiboor, mobile apps, and government systems.

Java and Spring Boot backend services for enterprise digital banking
Oracle SQL, Linux logs, and careful production debugging
Yasaboy.com - Cloudflare-verified 100K+ monthly pageview milestone

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Get in Touch

Digital BankingJava / Spring BootREST APIsOracle SQLSerixaChiboorSmart AACNext.js

LinkedIn GitHub Yasaboy.com yasas@yasaboy.com

Digital banking APIs

IdeaHub, Java and Spring Boot

100+ browser tools

Yasaboy.com product platform

Smart AAC research

Offline-first, AI-assisted

Production investigations

Oracle SQL and log evidence

Skills

Technologies I use

Tools I use for banking backends, investigations, and product work.

Java

Spring Boot

Oracle SQL

Linux

Git

Docker

Flutter

React

Next.js

TypeScript

JavaScript

PHP

PostgreSQL

MySQL

MongoDB

TensorFlow Lite

HTML5

CSS3

Tailwind CSS

.NET

Cloudflare

Google Cloud

AWS

Nginx

Visual Studio

View full skills

Current role

Software Engineer / Backend Java Developer

IdeaHub (Pvt) Ltd., September 2026 – Present

Full experience

Featured research

Smart AAC

Trilingual offline AAC with on-device supportive FER.

Case Study

Product

Yasaboy.com

Local-first browser tools platform with 100+ utilities.

Open website

Selected work

Four featured projects, in priority order.

View projects

Rendering pipeline

PHP widgets → HTML/CSS · not Laravel · not a SPA

1
Developer
Compose UI in PHP
2
PHP Widget Tree
Card, Button, Column...
3
Render Pipeline
BuildTree → RenderPass
4
Semantic HTML
Server-rendered output
5
Theme → Offline CSS
serixa build
6
Browser
HTML + CSS · optional JS

Personal Products

Serixa

Widget composition for server-rendered PHP

PHP 8.2+Open sourceWidget architectureServer-side rendering

Case Study

investigation-workspace · digital-banking

NDA-safe

Spring BootREST / JSONOracle SQLLogs

Architecture layers

1ControllersREST
2ServicesRules
3ReposSQL
4MiddlewareCore

REQUEST

POST /api/v1/transfers
{ "ref": "CORR-****",
  "channel": "MOBILE" }

RESPONSE

HTTP/1.1 200 OK
{ "status": "ACCEPTED",
  "latencyMs": 214 }

InvestigationT+0 reproduce → T+1 logs → T+2 compare → T+3 SQL

14:02:12 WARN slow.core.response durationMs=1842 · evidence=payload+sql

Professional Delivery

Digital Banking

Java and Spring Boot API work for digital banking flows, plus investigation support.

JavaSpring BootREST APIsOracle SQL

Case Study

chiboor-demo.vercel.app

chiboor-demo.vercel.app/login

chiboor-demo.vercel.app/login

Professional Delivery

Chiboor

B2B supplier discovery for SMEs. Buyers search and contact suppliers; suppliers manage listings; admins moderate the platform.

Next.jsReactTypeScriptPostgreSQL

Case Study

Smart AAC Emotion Camera with on-device expression cue

Smart AAC home screen with message composer and categories

Research & Development

Smart AAC

Offline-first Flutter AAC for Sinhala, Tamil, and English, with on-device supportive FER.

FlutterDartTensorFlow LiteEfficientNetB0

Case Study