|FULLSTACK DEVELOPER
I focus on building and securing web systems while growing my skills in Cybersecurity, Ethical Hacking, and Full Stack Development. My goal is to improve my skills in DevSecOps step by step.
Focus Areas
Core engineering domains, cloud capabilities, and specialized technical practices.
Software Development
Modern full-stack web and cross-platform mobile application development. Engineering scalable architectures, responsive interfaces, and resilient backend APIs with React, Next.js, and Flutter.
Cybersecurity & DevSecOps
Security-first development, vulnerability assessment, penetration testing, and server hardening. Integrating proactive security practices and rigorous API testing into software lifecycles.
Cloud & DevOps
Deploying and orchestrating cloud applications on AWS and GCP. Building automated CI/CD deployment pipelines using GitHub Actions and containerizing stacks with Docker.
Technology & Tooling
Architecting practical systems such as academic forecasting engines, exploring emerging tools, relational database modeling with MySQL, and contributing to open-source software.
About Me
Engineering philosophy, technical direction, and professional background.
Ruwan Sanjeewa — Full-Stack Developer & DevSecOps Trainee
I am an undergraduate at SLTC Research University in Sri Lanka pursuing a Bachelor of Applied Information Technology with a focus on Software Engineering, Cloud Infrastructure, and Information Security.
My work spans designing scalable MERN / Next.js web applications, cross-platform Flutter mobile systems, and containerized microservices. With a strong commitment to DevSecOps principles, I emphasize proactive vulnerability mitigation, automated CI/CD pipelines, and high-availability cloud deployments.
Featured Projects
Selected high-impact engineering solutions, practical systems, and open-source tools.
SLTC GPA Intelligence Hub
A high-precision academic strategist and GPA forecasting engine for SLTC students. Features real-time weighted grade calculations, honors classification roadmap, and dynamic PDF transcript generation.
Plantex
A comprehensive Full-Stack e-commerce ecosystem for premium bonsai retailing. Features a custom-built PHP administrative dashboard for inventory management, secure CRUD operations, and a modular Sass-powered responsive interface.
Education & Learning
Academic foundation, practical software engineering coursework, and industry certifications.
Bachelor of Applied Information Technology
SLTC Research University, Sri Lanka
Focused on Software Engineering, Cloud Infrastructure, and Information Security. Core coursework includes Database Design, DevSecOps, and Distributed Systems.
Cybersecurity, Cloud & API Engineering
Industry Certifications & Competitions
1st Place Winner in the 48-Hour CTF (eLearning.lk), Aviatrix Multicloud Network Associate, ISC2 Candidate, and GitHub Foundations Certified.
Current Focus
Active technical initiatives, development priorities, and continuous learning areas.
DevSecOps Automation
Integrating static and dynamic security checks, linting, and automated testing into GitHub Actions CI/CD workflows.
Cloud Architecture & Containers
Orchestrating containerized full-stack services with Docker, exploring multi-cloud deployment paradigms on AWS and GCP.
Secure Full-Stack Systems
Building responsive, production-ready web and mobile apps using Next.js 16, React 19, TypeScript, and Flutter with strict data validation.
Continuous Technical Learning
Advancing knowledge in penetration testing, network security fundamentals, and ethical hacking via hands-on labs and CTFs.
Feedback Intel
System validation from technical partners.
"Ruwan designed and built our LMS platform with a clear structure and strong performance. The system is stable, easy to manage, and our students now get a smooth learning experience."
Let's Connect
Explore my work, discuss engineering projects, or explore DevSecOps and cloud infrastructure collaborations.