Hari Hara Sudhan Shanmugam

About

Results-driven Senior Software Engineer with 4+ years of hands-on experience building and optimizing enterprise-grade applications — with a strong focus on Point of Sale (POS) systems, enterprise integrations, and robust desktop and web platforms. Proficient in full-stack development, system integrations, automated testing, and solution architecture, I thrive in agile environments, driving code quality, stability, and operational excellence. Always passionate about learning, mentoring, and delivering reliable, scalable software.

Skills

Languages: Java, JS, HTML5, CSS3, C++, C, MySQL, NodeJS, ReactJS, jQuery, Kotlin, C#, Python, .NET, SQL
Frameworks: .NET, ReactJS, Node.js, AEM, Rasa, PySide6, scikit-image
Databases: PostgreSQL, MySQL
Tools: Visual Studio, IntelliJ IDEA, Jenkins, Azure DevOps, Jira, Docker, Git
APIs & Protocols: RESTful APIs, TCP/IP, UDP, UDS
Testing: Automated UI Testing, Unit & Integration Testing, Load/Stress Testing, E2E Testing
Others: OOP, Agile, CI/CD, SDLC, Data Structures, System Design, UI/UX Principles

Education

Master of Engineering (Electrical & Computer Engineering)

University of Windsor, ON, Canada (09/2021 - 12/2022)

Bachelor of Engineering (Electronics & Communication Engineering)

Easwari Engineering College, Chennai, India (08/2016 - 05/2020)

Experience

Software Engineer II - Mi9 Retail (Toronto, Canada)

06/2022 - Current

Lead developer for enterprise POS applications and payment integrations
Delivered a custom C-based data migration utility for efficient table restructuring
Designed and deployed a Python-based Automated UI Testing tool, reducing manual QA time and improving release confidence
Architected secure, scalable REST API services and managed low-level TCP/UDP communications
Actively mentored peers, performed rigorous code reviews, and participated in architectural discussions
Maintained and optimized complex database operations (PostgreSQL & Progress DB)
Key contributor to multi-client application deployments and overnight CI/CD pipelines via Jenkins

Application Development Associate - Accenture (Bengaluru, India)

11/2020 - 08/2021

Developed custom AEM components, services, and workflows for global clients
Contributed to full-stack feature development using Java, .NET, Node.js, jQuery, and AWS deployments
Worked within Agile Scrum teams delivering production-ready features for e-commerce clients
Recognized for reliability in executing time-sensitive critical development tasks

Software Engineer Intern - Visteon (Chennai, India)

06/2018 - 09/2018

Explored automotive UDS protocol implementations and ECU communication stacks
Contributed to UML diagram creation and C++ code refactoring for diagnostic services

Projects

Automated UI Testing Application [LINK]

Objective: Automate regression testing for desktop POS systems.
Built With: Python, PySide6, pyautogui, scikit-image, Jenkins

Record & replay user interactions
Automated screenshot comparisons
Active window verification
PDF report generation and Jenkins integration for nightly run

Pizza Shop Chatbot [LINK]

Objective: Build an AI-driven customer support chatbot.
Built With: Python, Rasa Frameworkbr>

Natural language intent recognition
Dialog management and entity extraction
Custom-trained NLU model for pizza shop queries

Foodopies [LINK]

A ReactJS-powered recipe finder web app.
Features intuitive search and responsive UI.

Weather Application [LINK]

Minimalist weather app built using only HTML and CSS.

PING PONG GAME FOR APPLE WATCH OS [LINK]

Built an interactive Ping Pong game tailored for Apple Watch OS using Swift. Focused on touch responsiveness and seamless performance on limited screen real estate. Optimized game loop and collision mechanics for wearable devices, delivering a nostalgic mini-game experience.