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cptdihindu/README.md

Hesara Liyanage Banner

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🚀 About Me

👋 Hey, I'm Hesara

I'm an Information Systems undergraduate interested in building practical software systems and learning how to deploy, automate, monitor, and scale them.

  • 🎓 BSc Information Systems Undergraduate at UCSC
  • 💻 Interested in Software Engineering, DevOps, and Cloud Engineering
  • 🛠️ Building full-stack applications with Next.js, React, NestJS, FastAPI, PostgreSQL, and Docker Compose
  • 🐧 Strengthening my foundation in Linux, networking, system administration, and deployments
  • ⚙️ Currently learning CI/CD, AWS, Terraform, Kubernetes, and monitoring
  • 🎯 Goal: become a DevOps Engineer
 Hesara Liyanage terminal intro

🎯 Current Focus

Linux Administration  █████████░  Strong foundation
Docker / Compose      ████████░░  Building practical projects
CI/CD                 █████░░░░░  Learning GitHub Actions
AWS Cloud             ████░░░░░░  Learning fundamentals
Terraform             ███░░░░░░░  Next target
Kubernetes            ██░░░░░░░░  After Docker + CI/CD

🧰 Tech Stack

Languages

Languages

Frontend

Frontend

Backend

Backend

Databases

Databases

DevOps, Tools & Infrastructure

DevOps Tools

Note: AWS, Terraform, and Kubernetes are part of my active DevOps learning roadmap.

🔥 Featured Projects

📄 MarkdownForge / mdToPdf

Browser-based Markdown editor and PDF/document generation platform.

Tech: JavaScript, Python, FastAPI, Playwright, CodeMirror, Marked.js

Highlights:

  • Live Markdown editing and preview
  • PDF generation workflow
  • Browser-based document creation
  • Practical full-stack project foundation

🚚 SwiftTrack Middleware Architecture

Middleware architecture for logistics system integration.

Tech: JavaScript, Python, Node.js, Express.js, Flask, PostgreSQL, RabbitMQ, Docker, WebSockets

Highlights:

  • API Gateway
  • Microservices architecture
  • REST, SOAP, TCP/IP, WebSockets
  • RabbitMQ publish/subscribe messaging

🐾 PetVet

Veterinary clinic management system built for clinic and pet-service operations.

Tech: PHP, HTML, CSS, JavaScript, MySQL

Highlights:

  • Web-based clinic service platform
  • PHP backend functionality
  • Database-backed workflows
  • Group project experience

📡 Python Pub/Sub Middleware

Python socket-based Publish/Subscribe middleware implementation with client-server communication.

Tech: Python, Sockets, Client-Server Architecture

Highlights:

  • Publisher/subscriber roles
  • Topic-based message filtering
  • Socket communication
  • Middleware concept practice

✅ TodoListApp

Simple full-stack Todo List web app with API and database integration.

Tech: React, ASP.NET Core Web API, Entity Framework Core, SQLite

Highlights:

  • Frontend and backend separation
  • REST API practice
  • Database integration
  • CRUD application structure

📅 Student Timetable Optimiser

Java console app for importing class CSVs and generating clash-free student timetables.

Tech: Java, CSV, Scheduling Logic

Highlights:

  • CSV import/export
  • Timetable generation
  • Clash-free scheduling
  • Preference scoring

🛠️ DevOps / System Administration Labs

🐧 Linux Administration

  • DNF package and repository management
  • Boot recovery using GRUB emergency shell
  • /etc/fstab, LVM, XFS quotas
  • systemd services, cron jobs, logs, and resource limits

🌐 Networking & Infrastructure

  • DHCP, routing, IP forwarding, NAT
  • nftables masquerade
  • tcpdump and conntrack troubleshooting
  • BIND9 DNS and DNSSEC lab setup

📦 Containers

  • Built containers manually using namespaces
  • Used chroot, cgroup v2, bridge networking, and veth pairs
  • Practiced core concepts behind Docker/Podman

⚖️ High Availability

  • Keepalived/VRRP virtual IP failover
  • Squid reverse proxy/load balancing
  • Tomcat backend servers
  • MySQL firewall restriction and TLS verification

📊 GitHub Analytics

Hesara's GitHub Stats Top Languages

GitHub Streak

GitHub Activity Graph

🏆 GitHub Highlights

🐍 Contribution Snake

GitHub Contribution Snake

🧭 My Engineering Roadmap


Linux
Docker
CI/CD
AWS
Terraform
Kubernetes
📚 More About My DevOps Learning Path

I'm working toward becoming confident in the full DevOps lifecycle:

  • Linux administration and troubleshooting
  • Dockerized application deployment
  • CI/CD pipelines with GitHub Actions
  • Cloud fundamentals with AWS
  • Infrastructure as Code with Terraform
  • Kubernetes application deployment
  • Monitoring, logging, backups, and incident handling

🧪 Practical Areas I Like Working On
  • Backend APIs
  • Database-backed applications
  • Linux servers
  • Automation scripts
  • Docker Compose environments
  • Networking labs
  • Deployment workflows
  • System troubleshooting

🚀 Future Portfolio Improvements

Planned improvements for this GitHub profile and portfolio:

  • Add public deployment links for major projects
  • Add CI/CD badges to project repositories
  • Add Dockerized deployment guides
  • Add Terraform-based AWS deployment lab
  • Add monitoring dashboard screenshots
  • Add technical blog posts and project writeups

🤝 Connect With Me

LinkedIn GitHub

email

Footer Wave

"Building the bridge between software engineering and reliable infrastructure."

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  1. mdToPdf mdToPdf Public

    MarkDownForge is a Markdown editor that previews, styles, and exports polished PDF documents with selectable-text output, custom CSS, images, page controls, and AI-assisted editing.

    JavaScript 1

  2. petvet-pvt-ltd/PETVET petvet-pvt-ltd/PETVET Public

    PETVET is our 2nd year group project.

    PHP 1