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AVAILABLE FOR WORK

Hey, I’m Isuru

Full-stack developer building robust web applications, interactive digital products, and scalable frontend architectures with clean code.Brand & visual designer crafting distinctive logomarks, vector identity systems, fluid motion graphics, and interactive digital art.


Selected Works

A selection of products, systems, and experiments I've built across AI, software, and data.

InsightFlow

Local-first multimodal AI workspace transforming multi-hour technical lectures and webinars into textbook-grade interactive notes, searchable diarized transcripts, and context-aware RAG tutoring—without uploading multi-gigabyte raw videos.

Visit ApplicationGitHub
insightflow.com.lk/studioLOCAL-FIRST MULTIMODAL
01:14:22 / 02:30:00
SPEAKER 1 · 01:14:22Client Demux
"Notice how client-side WebAssembly demuxing drops our upload footprint from 4GB down to 20MB before calling AssemblyAI."
DIAGRAM GENERATEDMermaid.js
Raw VideoClient Audio/SlidesCloud AI

System Architecture & Pipeline

Zero-Upload Client Ingestion

Client-side audio demuxing and slide keyframe extraction via HTML5 Canvas & Web Workers reduces network upload payloads by 96% (from 4GB down to ~20MB).

Speech-to-Text & Diarization

High-concurrency AssemblyAI Universal-2 engine with dynamic key rotation pool, speaker diarization, and word-level timestamp alignment.

Two-Stage Multimodal AI

Google Gemini 2.5 Flash curriculum planning pass followed by holistic synthesis merging audio transcripts with client-side OCR keyframes.

Declarative Visual Engine

Client-rendered vector diagrams (Mermaid.js), mathematical proofs (KaTeX), statistical charts (Vega-Lite), and slide hotspot overlays at 99.9% lower cost than raster generation.

Resilient Middle-Tier & RAG

Decoupled Cloudflare R2 asynchronous job buffering surviving client disconnects, paired with a persona-driven Socratic RAG conversational tutor.

Enterprise Export Engine

AST markdown parsing with mistletoe, converting formulas to native Word MathML (.docx), publication-ready PDFs, and interactive GFM.

Key Highlights & Capabilities

96% upload bandwidth reduction by executing demuxing and OCR keyframe extraction client-side
99.9% diagram generation cost reduction using declarative syntax (Mermaid, KaTeX, Vega-Lite)
Sub-minute holistic note synthesis for 2+ hour recordings with zero disconnect data loss via R2 middle-tier
Context-aware RAG conversational tutor with selectable teaching personas and clickable slide citations
Dual-database polyglot persistence: PostgreSQL ThreadedConnectionPool (prod) with SQLite WAL fallback
Technologies Used:
React 18TypeScriptFastAPIPython 3.11Google Gemini 2.5 FlashAssemblyAI Universal-2Cloudflare R2PostgreSQLTailwindCSSMermaid.jsKaTeXViteFly.io

ScoreCast

ScoreCast

High-velocity machine learning forecasting engine delivering sub-10ms probabilistic predictions, risk telemetry, and feature-importance metrics across streaming data.

Visit ApplicationGitHub
scorecast.iswije.com/telemetrySUB-10MS INFERENCE
Inference Latency4.8ms
Throughput12.4k req/s
Drift Metric (PSI)0.012 (Stable)
Real-Time Feature Probability Distribution (SHAP Importance)

System Architecture & Pipeline

Streaming Data Pipeline

High-throughput Kafka streaming architecture with real-time event validation and automated feature store ingestion.

ML Ensemble Architecture

LightGBM and gradient-boosted decision trees trained with continuous online feature engineering and hyperparameter tuning.

Sub-10ms Inference API

Ultra-low latency FastAPI microservices with model quantization, Redis caching, and automated drift detection.

Telemetry Dashboard

Real-time WebSocket dashboard displaying live probabilistic distributions, SHAP feature impact, and confidence intervals.

Key Highlights & Capabilities

Engineered for 10,000+ predictions per second with p99 response times under 8ms
Real-time model drift and data shift monitoring with automated fallback triggers
Interactive SHAP explanation trees explaining predictive rationale on every single query
Containerized microservices orchestrated with Docker and CI/CD automated test gates
Technologies Used:
PythonScikit-learnLightGBMApache KafkaFastAPIPostgreSQLRedisReactTypeScriptDocker

Reva

Reva

Intelligent agentic assistant orchestrating multi-step autonomous workflows, deterministic tool invocation, and persistent context resolution across complex APIs.

Visit ApplicationGitHub
reva.iswije.com/agent-studioAUTONOMOUS
ReasoningParsed user prompt → Identified multi-turn database schema migration task
Tool Execquery_schema(table='users') → Verified foreign key constraints (0.4ms)
OutputGenerated idempotent SQL migration with zero downtime rollback guards

System Architecture & Pipeline

Agentic Loop & DAG

Stateful LangGraph orchestration with recursive planning, dynamic tool selection, and automated error recovery.

Hybrid RAG Memory

Dual-tier memory architecture uniting short-term conversational context with long-term pgvector semantic knowledge retrieval.

Deterministic Guardrails

Rigorous schema validation and safety guardrails enforcing deterministic JSON outputs and permission boundaries.

Interactive Studio UI

Distraction-free Next.js interface with live thought-stream visualization, tool execution inspect panel, and step debugging.

Key Highlights & Capabilities

Multi-turn context persistence across complex enterprise workflows and API integrations
Transparent thought-stream telemetry showing exact reasoning steps and tool execution latency
Zero-hallucination guardrail validation with deterministic fallback policies
Self-correcting code and query execution in sandboxed virtual environments
Technologies Used:
TypeScriptPythonLangGraphNext.jsPostgreSQL (pgvector)DockerTailwindCSSGCPVercel
Local-First Multimodal AI

InsightFlow

Local-first multimodal AI workspace transforming multi-hour technical lectures and webinars into textbook-grade interactive notes, searchable diarized transcripts, and context-aware RAG tutoring—without uploading multi-gigabyte raw videos.

scorecast.iswije.com/telemetrySUB-10MS INFERENCE
Inference Latency4.8ms
Throughput12.4k req/s
Drift Metric (PSI)0.012 (Stable)
Real-Time Feature Probability Distribution (SHAP Importance)
ML Predictive Engine

ScoreCast

High-velocity machine learning forecasting engine delivering sub-10ms probabilistic predictions, risk telemetry, and feature-importance metrics across streaming data.

reva.iswije.com/agent-studioAUTONOMOUS
ReasoningParsed user prompt → Identified multi-turn database schema migration task
Tool Execquery_schema(table='users') → Verified foreign key constraints (0.4ms)
OutputGenerated idempotent SQL migration with zero downtime rollback guards
Autonomous Agent

Reva

Intelligent agentic assistant orchestrating multi-step autonomous workflows, deterministic tool invocation, and persistent context resolution across complex APIs.

What I Build

Core capabilities, architectures, and technical domains across AI systems, machine learning, and full-stack engineering.

What I Build

Core capabilities, architectures, and technical domains across AI systems, machine learning, and full-stack engineering.

AI Products

Building applications around LLMs, RAG, multimodal models and intelligent agents.

InsightFlowRevaAtlasflow

Machine Learning

Predictive modelling, time-series forecasting, feature engineering and model evaluation.

LightGBMPyTorchTensorFlowScikit-learn

Full-Stack

Building complete products from frontend to backend, databases and deployment.

ReactTypeScriptFastAPIPostgreSQLDocker

Data & Research

Exploring datasets, modelling approaches and experimental AI systems.

Exploratory AnalysisHypothesis TestingAgentic Systems

Experiments & Research

Things I built while trying to understand something.

N-BEATS Forecasting

Time Series·PyTorch

Sinhala Language Model

NLP·SLM

Land Price Prediction

Regression·LightGBM

RAG Experiments

LLM·Retrieval

Experiments & Research

Things I built while trying to understand something.

How I Build

A continuous 7-stage development lifecycle — transforming initial hypotheses and research into scalable data architectures, trained models, production-grade products, and iterative deployments.

Sudarshana Wijerathna building engineering pipelines

Key Technologies & Platforms

Production-proven languages, AI/ML frameworks, distributed backend engines, cloud platforms, and frontend architectures I leverage to deliver high-performance digital systems.

Languages—Python·TypeScript·Java·C++·SQL
AI / ML—PyTorch·TensorFlow·Scikit-learn·HuggingFace·LangChain·LightGBM
Backend—FastAPI·Flask·Node.js·PostgreSQL·Redis
Frontend—React·Next.js·TypeScript·TailwindCSS·Three.js
Infrastructure—Docker·GitHub Actions·AWS·GCP·Vercel
Python
PyTorch
React
Docker
FastAPI
Java
GitHub
LangChain
TailwindCSS
PostgreSQL
AWS
Scikit-learn
Python
PyTorch
React
Docker
FastAPI
Java
GitHub
LangChain
TailwindCSS
PostgreSQL
AWS
Scikit-learn
Python
PyTorch
React
Docker
FastAPI
Java
GitHub
LangChain
TailwindCSS
PostgreSQL
AWS
Scikit-learn
TypeScript
Next.js
TensorFlow
Node.js
C++
HuggingFace
Vercel
Flask
Redis
GCP
Three.js
SQL
TypeScript
Next.js
TensorFlow
Node.js
C++
HuggingFace
Vercel
Flask
Redis
GCP
Three.js
SQL
TypeScript
Next.js
TensorFlow
Node.js
C++
HuggingFace
Vercel
Flask
Redis
GCP
Three.js
SQL
LangChain
PostgreSQL
Three.js
Python
Scikit-learn
Docker
React
GitHub Actions
Java
FastAPI
LightGBM
TypeScript
LangChain
PostgreSQL
Three.js
Python
Scikit-learn
Docker
React
GitHub Actions
Java
FastAPI
LightGBM
TypeScript
LangChain
PostgreSQL
Three.js
Python
Scikit-learn
Docker
React
GitHub Actions
Java
FastAPI
LightGBM
TypeScript
HuggingFace
Vercel
Redis
Next.js
TensorFlow
TailwindCSS
GCP
Node.js
C++
PyTorch
GitHub
Flask
HuggingFace
Vercel
Redis
Next.js
TensorFlow
TailwindCSS
GCP
Node.js
C++
PyTorch
GitHub
Flask
HuggingFace
Vercel
Redis
Next.js
TensorFlow
TailwindCSS
GCP
Node.js
C++
PyTorch
GitHub
Flask
AWS
LightGBM
Docker
TypeScript
GitHub Actions
Python
Three.js
FastAPI
Next.js
SQL
PyTorch
Node.js
AWS
LightGBM
Docker
TypeScript
GitHub Actions
Python
Three.js
FastAPI
Next.js
SQL
PyTorch
Node.js
AWS
LightGBM
Docker
TypeScript
GitHub Actions
Python
Three.js
FastAPI
Next.js
SQL
PyTorch
Node.js

Logos & Brand Identities

Aether Isometric Hyper-Torus
Morpho Wordmark & Identity
LayerLoom Lab Alchemist Flask
Aether Isometric Hyper-Torus
Morpho Wordmark & Identity
LayerLoom Lab Alchemist Flask
Aether Isometric Hyper-Torus
Morpho Wordmark & Identity
LayerLoom Lab Alchemist Flask
Aether Isometric Hyper-Torus
Morpho Wordmark & Identity
LayerLoom Lab Alchemist Flask
Kinetix Möbius Ribbon
ScoreCast Gaming Wordmark
Origami Heart Loop Glyph
Kinetix Möbius Ribbon
ScoreCast Gaming Wordmark
Origami Heart Loop Glyph
Kinetix Möbius Ribbon
ScoreCast Gaming Wordmark
Origami Heart Loop Glyph
Kinetix Möbius Ribbon
ScoreCast Gaming Wordmark
Origami Heart Loop Glyph
Vanguard Precision Monogram
ScoreCast Pixel Glyph
Atlas Pixel Wings Monogram
Vanguard Precision Monogram
ScoreCast Pixel Glyph
Atlas Pixel Wings Monogram
Vanguard Precision Monogram
ScoreCast Pixel Glyph
Atlas Pixel Wings Monogram
Vanguard Precision Monogram
ScoreCast Pixel Glyph
Atlas Pixel Wings Monogram
Geometric Vector Monogram
LayerLoom Geometric Ribbon
ScoreCast Linked Emblem
Geometric Vector Monogram
LayerLoom Geometric Ribbon
ScoreCast Linked Emblem
Geometric Vector Monogram
LayerLoom Geometric Ribbon
ScoreCast Linked Emblem
Geometric Vector Monogram
LayerLoom Geometric Ribbon
ScoreCast Linked Emblem

Logos & Brand Identities

Vector logomarks, wordmarks, and visual identity systems crafted for real and concept brands — built on geometry, intentional colour, and typographic precision.

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Motion Graphics

Story-driven vector animations, animated characters, and interactive web graphics — from stylized explainer narratives to animated icons, doodles, and UI micro-interactions crafted with fluid keyframing.

UI/UX & Character Motion

Interactive Character Micro-Interactions — Sign-Up & Auth Suite

Bespoke robot companion micro-interactions designed for seamless onboarding — featuring tactile input state morphing during registration and continuous biometric fingerprint scanning transitions.

VFX & Scientific Visualization

Black Hole — Illustrated Motion Study

Stylised motion graphic exploring black hole anatomy — layered accretion disk strokes, photon ring glow, and event horizon depth rendered in a flat illustrated design language.

Motion Graphics

Story-driven vector animations, animated characters, and interactive web graphics — from stylized explainer narratives to animated icons, doodles, and UI micro-interactions crafted with fluid keyframing.

UI/UX & Character Motion

Interactive Character Micro-Interactions — Sign-Up & Auth Suite

Bespoke robot companion micro-interactions designed for seamless onboarding — featuring tactile input state morphing during registration and continuous biometric fingerprint scanning transitions.

VFX & Scientific Visualization

Black Hole — Illustrated Motion Study

Stylised motion graphic exploring black hole anatomy — layered accretion disk strokes, photon ring glow, and event horizon depth rendered in a flat illustrated design language.

ILLUSTRATIONS & VECTOR ART

Illustrations & Digital Art

Vector artworks, sci-fi concept environments, isometric scenes, and editorial illustrations crafted in Adobe Illustrator.

ILLUSTRATIONS & VECTOR ART

Illustrations & Digital Art

Vector artworks, sci-fi concept environments, isometric scenes, and editorial illustrations crafted in Adobe Illustrator.

Isometric & Sci-Fi

Cyberpunk Neon Metropolis

Isometric cityscape exploring high-density vertical architecture, glowing skybridge transitways, and moody neon backlighting.

Isometric & Sci-Fi

Cyberpunk Neon Metropolis

Isometric cityscape exploring high-density vertical architecture, glowing skybridge transitways, and moody neon backlighting.

Cosmic & Sci-Fi

Deep Space Horizon Explorer

Astronomical vector exploration depicting orbital planetary alignments, gravitational rings, and deep-space telemetry arcs.

Cosmic & Sci-Fi

Deep Space Horizon Explorer

Astronomical vector exploration depicting orbital planetary alignments, gravitational rings, and deep-space telemetry arcs.

Editorial & Organic

Minimalist Botanical Harmony

Warm, modern editorial composition combining organic flora silhouettes, earthy terracotta textures, and clean geometric arcs.

Editorial & Organic

Minimalist Botanical Harmony

Warm, modern editorial composition combining organic flora silhouettes, earthy terracotta textures, and clean geometric arcs.

Retro & Vector

Synthwave Wireframe Grid

Perspectival 80s synthwave horizon with vector wireframe neon mountain ranges and radiant gradient solar disk.

Retro & Vector

Synthwave Wireframe Grid

Perspectival 80s synthwave horizon with vector wireframe neon mountain ranges and radiant gradient solar disk.

PRODUCT & UI/UX DESIGN

UI / UX & Digital Products

Design systems, mobile application concepts, enterprise SaaS platforms, and responsive user flows engineered with mathematical precision in Figma.

PREMIUM
TOTAL ASSETS$84,290.50+14.8% this month
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Stripe PayoutToday, 2:15 PM
+$4,200.00
FinTech Mobile App • iOS & Android • Figma

Nova Pay — Neobank & Wealth OS

High-trust mobile banking experience featuring frictionless global transfers, real-time portfolio allocations, and tactile glassmorphic card switching.

Design SystemUser FlowInteractive PrototypeDark UI
FinTech Mobile AppiOS & Android • Figma

Nova Pay — Neobank & Wealth OS

High-trust mobile banking experience featuring frictionless global transfers, real-time portfolio allocations, and tactile glassmorphic card switching.

Design SystemUser FlowInteractive PrototypeDark UI
Production Cluster/us-east-1
Healthy (99.99%)
Latency p991.8 ms
Throughput124k req/s
Enterprise SaaS Dashboard • Web Desktop • Figma

Chronos OS — Distributed Cloud Analytics

A unified telemetry dashboard designed for infrastructure engineers to visualize distributed mesh topology, query latencies, and service level metrics.

Dashboard UIData VizComponent LibraryDesign Tokens
Enterprise SaaS DashboardWeb Desktop • Figma

Chronos OS — Distributed Cloud Analytics

A unified telemetry dashboard designed for infrastructure engineers to visualize distributed mesh topology, query latencies, and service level metrics.

Dashboard UIData VizComponent LibraryDesign Tokens
AETHERIA STUDIO
Prompt: Radiant Glass Orb
Spatial Design Software • Desktop macOS • Figma & Spline

Aetheria — 3D Generative Creative Studio

A futuristic creative canvas interface combining procedural node graphs, 3D viewport spatial controls, and AI prompt engineering tools.

Creative ToolNode UISpatial CanvasDark Mode
Spatial Design SoftwareDesktop macOS • Figma & Spline

Aetheria — 3D Generative Creative Studio

A futuristic creative canvas interface combining procedural node graphs, 3D viewport spatial controls, and AI prompt engineering tools.

Creative ToolNode UISpatial CanvasDark Mode
94OPTIMAL
Heart Rate: 68 BPM (Resting)
Health & Wearable App • iOS & watchOS • Figma

Pulse Vitals — Biometric Health Tracker

Holistic health and cardiovascular monitoring application integrating circadian rhythm sleep scoring, live ECG heart rate telemetry, and workout zones.

Mobile UIWearableHealth TechMicro-Interactions
Health & Wearable AppiOS & watchOS • Figma

Pulse Vitals — Biometric Health Tracker

Holistic health and cardiovascular monitoring application integrating circadian rhythm sleep scoring, live ECG heart rate telemetry, and workout zones.

Mobile UIWearableHealth TechMicro-Interactions
PRODUCT & UI/UX DESIGN

UI / UX & Digital Products

Design systems, mobile application concepts, enterprise SaaS platforms, and responsive user flows engineered with mathematical precision in Figma.

Tools I Work With

The industry-standard creative suites I leverage daily — spanning UI/UX design in Figma, vector craft in Adobe Illustrator & Affinity, motion design in After Effects, video editing in Premiere Pro, and visual compositing in Photoshop.

Sudarshana Wijerathna working with creative design tools

Medium changed. Curiosity didn't.

A journey from visual craft to software engineering — building AI-powered software, scalable architectures, and intelligent systems with a designer's instinct for how digital products should look, communicate, and feel.

Medium changed. Curiosity didn't.

A journey from visual craft to software engineering — building AI-powered software, scalable architectures, and intelligent systems with a designer's instinct for how digital products should look, communicate, and feel.

THE BEGINNING

I started creating long before I started coding.

THE CREATOR

As a teenager, I ran a YouTube channel where I was the presenter, editor, and thumbnail designer.

Later, that interest turned into freelance work — designing logos, flyers, animations and videos for people and businesses.

THE SHIFT

When I started studying Information Technology, my canvas changed.

I moved from designing things people could see to building things people could use — exploring software engineering, AI, machine learning and data.

TODAY

Today, I sit somewhere between the two.

I build technical products with a designer's instinct for how they should look, communicate and feel.

Sudarshana Wijerathna

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worth creating?

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