Hari Nandan is a software developer who builds practical, scalable applications with a strong focus on backend systems, modern web technologies, and cloud deployment.
He enjoys solving real-world problems, designing efficient systems, and turning ideas into reliable software products.
~ ChatGPT
My Works
ServiceBill – SaaS Billing Platform
Freelance | Present | Golang Backend / SaaS
Designed and developed a multi-tenant SaaS billing system with pay-as-you-go pricing, admin portal, and mobile integration.
Impact / Usage: Actively used by multiple authorized service centers for managing billing operations and customer subscriptions.
Tech Stack: Go, Modular Monolithic, PostgreSQL, Docker, Dokploy
Role: Backend Engineer + Deployment Engineer (Team of 3)
SalesGo – Delivery Management System
Freelance | Backend + Infrastructure
Built a full backend system for delivery tracking, driver allocation, and customer management for a trading company.
Impact / Usage: Used in production by Growmore Trading, managing ~40 drivers and 3000+ customers in daily operations.
Tech Stack: Node.js, Microservice, MongoDB, AWS, Docker, Nginx
Role: Backend + Deployment Engineer (Team of 3)
RKM Class Grading App
Freelance | Mobile App
Developed a mobile app for RKM School Kozhikode. Used by teachers to manage and evaluate class marks efficiently.
Impact / Usage: Actively used by 50+ teachers for grading and internal assessments.
Tech Stack: Capacitor.js, Firebase
Role: Solo Developer
Mathrubhumi.com – Internship
May 2024 – Aug 2024 | Frontend + Backend (Next.js)
Worked on Qikz web app features and real-time engagement tools for news platform.
Impact / Usage: Contributed to production features and built real-time election result widget used on homepage.
Tech Stack: Next.js, JavaScript, Web APIs
Role: Intern Developer
My Works
ServiceBill – SaaS Billing Platform
Freelance | Present | Golang Backend / SaaS
Designed and developed a multi-tenant SaaS billing system with pay-as-you-go pricing, admin portal, and mobile integration.
Impact / Usage: Actively used by multiple authorized service centers for managing billing operations and customer subscriptions.
Tech Stack: Go, Modular Monolithic, PostgreSQL, Docker, Dokploy
Role: Backend Engineer + Deployment Engineer (Team of 3)
SalesGo – Delivery Management System
Freelance | Backend + Infrastructure
Built a full backend system for delivery tracking, driver allocation, and customer management for a trading company.
Impact / Usage: Used in production by Growmore Trading, managing ~40 drivers and 3000+ customers in daily operations.
Tech Stack: Node.js, Microservice, MongoDB, AWS, Docker, Nginx
Role: Backend + Deployment Engineer (Team of 3)
RKM Class Grading App
Freelance | Mobile App
Developed a mobile app for RKM School Kozhikode. Used by teachers to manage and evaluate class marks efficiently.
Impact / Usage: Actively used by 50+ teachers for grading and internal assessments.
Tech Stack: Capacitor.js, Firebase
Role: Solo Developer
Mathrubhumi.com – Internship
May 2024 – Aug 2024 | Frontend + Backend (Next.js)
Worked on Qikz web app features and real-time engagement tools for news platform.
Impact / Usage: Contributed to production features and built real-time election result widget used on homepage.
Tech Stack: Next.js, JavaScript, Web APIs
Role: Intern Developer
Build using Go + html
This portfolio is built using Go with HTML templates and Server Side Rendering (SSR) .
The server handles the rendering process by combining reusable components, templates, and data before sending the final HTML page to the browser.
Each section of this portfolio is organized as an independent template component, similar to a component-based frontend architecture.
Go manages the backend logic and template execution, while HTML and CSS handle the user interface, keeping the application lightweight, fast, and easy to maintain.
The flow is simple: a request reaches the Go server, the required templates are loaded, data is injected into the templates, and a complete HTML response is generated and delivered to the user.
