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Index - 2026 Portfolio

IbuildAI-powered enterprise systems.production-grade backend APIs.RAG-based knowledge platforms.scalable full-stack products.cloud-ready business applications.

Backend and full-stack engineer designing production AI workflows, scalable APIs, and elegant web applications with FastAPI, PostgreSQL, React, AWS, and Azure.

Browse Work
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PythonFastAPIOpenAIRAGPostgreSQLReactAWSAzureTypeScriptPythonFastAPIOpenAIRAGPostgreSQLReactAWSAzureTypeScriptPythonFastAPIOpenAIRAGPostgreSQLReactAWSAzureTypeScript

02 - Expertise x Stack

Backend, full-stack,
and AI systems.

Computer Engineering graduate combining backend architecture, AI integration, and cloud delivery into systems that ship and scale.

Production AI Systems

RAG, vector stores, LLM agents, and thread-based context for real enterprise workloads.

Capabilities01

Enterprise Web Apps

Scalable backends and clean React frontends serving teams with reliable day-to-day usage.

Capabilities02

Cloud and DevOps

AWS, Azure, Nginx, and PM2 from architecture through deployment and monitoring.

Capabilities03

Backend & APIs

/01
  • FastAPI
  • Node.js
  • REST APIs
  • Pydantic
  • PostgreSQL
  • MySQL
  • Database Design

AI / ML Integration

/02
  • OpenAI API
  • RAG Architecture
  • Vector Stores
  • LLM Agents
  • Azure OpenAI
  • Computer Vision
  • YOLOv8
  • OpenCV

Frontend

/03
  • React
  • Next.js
  • TypeScript
  • HTML/CSS
  • WordPress
  • Elementor
  • Supabase Realtime

Cloud & DevOps

/04
  • AWS EC2
  • AWS Lightsail
  • Azure Blob Storage
  • Azure Static Web Apps
  • Vercel
  • Railway
  • Docker
  • Nginx
  • PM2
  • Uvicorn

Tools & Practices

/05
  • Git
  • Jira
  • GitHub Copilot
  • Claude Code
  • CI/CD
  • Formal Verification
  • Verdi
  • GDB
  • Perforce
  • TCL

03 - Selected Work

Projects, shipped.

Stride

Stride

Enterprise-grade Invoice and Quotation Engine. A high-performance platform streamlining financial workflows for construction and manufacturing businesses with automated PDF generation.

Project 01

Stride

Enterprise-grade Invoice and Quotation Engine. A high-performance platform streamlining financial workflows for construction and manufacturing businesses with automated PDF generation.

FastAPIReactSupabaseRailway
Live Application
Senti

Senti

Intelligent Personal Finance Architect. A comprehensive ecosystem providing real-time visibility into cash flow, savings goals, and spending patterns through a security-first interface.

Project 02

Senti

Intelligent Personal Finance Architect. A comprehensive ecosystem providing real-time visibility into cash flow, savings goals, and spending patterns through a security-first interface.

FastAPIReactSupabaseRailway
Live Application
Seatify

Seatify

Real-time restaurant/cafe occupancy monitoring system using computer vision and dynamic layout analysis to optimize operational efficiency.

Project 03

Seatify

Real-time restaurant/cafe occupancy monitoring system using computer vision and dynamic layout analysis to optimize operational efficiency.

YOLOv8OpenCVMySQL
IEEE Xplore - ICARC 2026
Business Insights AI

Business Insights AI

AI-powered sustainability and financial analysis platform utilizing RAG, vector stores, and thread-based context management for enterprise clients.

Project 04

Business Insights AI

AI-powered sustainability and financial analysis platform utilizing RAG, vector stores, and thread-based context management for enterprise clients.

FastAPIReactOpenAIRAGPostgreSQLAWS EC2Nginx
10+ enterprise clients
CRM System

CRM System

Intelligent lead capture, SMS thread integration, deduplication, and AI-powered follow-up automation designed to optimize sales pipelines.

Project 05

CRM System

Intelligent lead capture, SMS thread integration, deduplication, and AI-powered follow-up automation designed to optimize sales pipelines.

Node.jsNext.jsSupabaseAzure OpenAIVercel
Reduces manual sales workload

See All Projects

Explore the full archive of 10 production systems and research entries.

Featured
/ 5
ShippedtoProduction.EngineeredwithCare,ShippedtoProduction.EngineeredwithCare,ShippedtoProduction.EngineeredwithCare,

04 - Engineering Log

From compiler R&D to backend-fullstack.

~/career.loglive

  1. April 2026

    to Present

    Software Engineer

    Quantum Tunnel Design (PVT) Ltd

    • Delivered CRM system enhancements including lead capture, SMS thread integration, lead merging, and AI-powered follow-up automation.
    • Integrated Azure OpenAI chat agents with Node.js, Next.js, Supabase, and Vercel serverless workflows.
    • Migrated Business Insight Platform infrastructure from AWS to Azure, improving cloud alignment and deployment maintainability.
    • Supported production delivery of AI-powered enterprise systems through client feedback, UAT, and post-deployment improvements.

  2. Sept 2025

    to March 2026

    Associate Software Engineer

    Quantum Tunnel Design (PVT) Ltd

    • Architected and deployed Business Insight Platform, an AI-powered sustainability analytics system using OpenAI RAG and vector stores.
    • Built enterprise Timesheets application serving 200+ employees with FastAPI, PostgreSQL, automated scheduling, and CXO reporting.
    • Developed core CRM features including lead capture, SMS thread integration, lead merging, and AI follow-up workflows.
    • Collaborated directly with clients on requirements, UAT, and deployment while managing full SDLC using Git and Jira.

  3. April 2024

    to October 2024

    Technical Engineering Intern

    Synopsys Lanka Pvt Ltd

    • Led regression cleanup for the Unified Compiler R&D team, resolving complex VCS verification issues.
    • Optimized SystemVerilog handling and fixed critical clock synchronization bugs.
    • Successfully integrated VCS support into the VC-Static formal verification tool.
    • Strengthened verification workflows across hardware validation pipelines.

  4. 2021

    to 2025

    B.Sc. Engineering (Hons) in Computer Engineering

    University of Sri Jayewardenepura

    • Second Class Upper Division (GPA: 3.43 / 4.00).
    • Minor in Data Management.
    • Specialized Coursework: DSA, NLP, Computer Vision, Machine Learning, Software Engineering.

  5. Feb 2020

    to Feb 2021

    Temporary Teller/Cashier

    People's Bank, Horana Branch

    • Processed high-volume daily cash transactions, deposits, withdrawals, and customer account servicing using People's Bank's in-house core banking system.
    • Ensured accuracy and compliance in cash handling, transaction verification, and KYC/customer documentation in a full-time retail branch environment.
    • Gained direct operational understanding of retail banking workflows and customer-facing transaction processing.

  6. 2019

    to now

    G.C.E. Advanced Level (Physical Science Stream)

    Sri Palee College, Horana, Western, Sri Lanka

    • DR 27 (Kalutara).
    • Combined Maths (A), Physics (A), Chemistry (A).

Built year by year.

A record of consistent execution across products, teams, and shipping cycles.

JanFebMarAprMayJunJulAugSepOctNovDec

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05 - Contact

Let'sbuild.

Focused on crafting clean code for backend and full-stack applications. I am particularly interested in the intersection of scalable systems and AI, and always open to the next technical challenge.

Open to product, platform, and AI work

Email

rkamithaisuru@gmail.com

Phone

+94 71 592 2751

GitHub

@amithaisuru

LinkedIn

amitha isuru