Available for opportunities

Charith
Lahiru.

// Full-Stack Software Engineer · AWS Certified · IESL Member

Results-driven engineer crafting scalable web applications and RESTful APIs. Specialized in Java, Spring Boot & cloud architecture — building secure, efficient, and maintainable systems that perform at scale.

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2+
Years Exp.
3.12
GPA UoM
1x
AWS Cert.
About Me

Engineered for
Excellence

I'm a Full-Stack Software Engineer with a strong foundation in enterprise-grade systems and modern web development. Currently at IronOne Technologies, I architect and maintain an Order Management System used by stockbroker firms — where reliability and performance are non-negotiable.

My expertise spans from low-level database optimization in Oracle to building secure JWT-authenticated APIs with Spring Boot. I hold a BSc. Engineering (Hons) from the University of Moratuwa and am AWS Certified Solutions Architect — Associate.

I'm passionate about writing clean, maintainable code that solves real problems. Whether it's front-end interactivity or back-end architecture, I bring the same level of precision and care to every layer of the stack.

📍
Location
Angunukolapelessa, Sri Lanka
🌐
Website
charithlahiru.com
💼
LinkedIn
linkedin.com/in/charith-lahiru
🐙
GitHub
github.com/CharithLahiru
📞
Phone
+94 71 108 3635
✉️
Email
wlcharithlahiru@gmail.com
🏛️
Membership
Member, IESL — Institute of Engineers, Sri Lanka
Technical Arsenal

What I Build With

☕
Backend Development
Java Spring Boot Java EE RESTful APIs JWT Auth
🌐
Frontend Development
JavaScript ES6+ HTML5 CSS3 jQuery JavaFX
🗄️
Databases
Oracle DB MySQL Query Optimization Troubleshooting
☁️
Cloud & DevOps
AWS SAA-C03 Git Maven System Design
🔐
Security & Auth
JWT Tokens Refresh Tokens API Security Auth Flows
⚡
Core Competencies
Performance Tuning Bug Fixing Full-Stack Dev SDLC Debugging
Work History

Professional Journey

Software Engineer
Aug 2023 – Present
IronOne Technologies
  • Developed and maintained an Order Management System (OMS) for stockbroker firms using Java EE and Oracle Database.
  • Designed and implemented RESTful APIs using Spring Boot, enabling seamless third-party integrations.
  • Strengthened application security by implementing JWT-based authentication and refresh token mechanisms.
  • Improved system performance through efficient debugging, query optimization, and backend enhancements.
  • Reduced bug count significantly by identifying root causes and implementing stable fixes across the full stack.
  • Performed troubleshooting in Oracle databases, improving data reliability and system consistency.
  • Analyzed system logs to proactively detect and resolve production issues before they impacted users.
Trainee Software Engineer
Jan 2023 – Aug 2023
IJSE – Institute of Software Engineering
  • Designed and developed a Patient Management System using Java, JavaFX, and MySQL.
  • Implemented features including patient registration, billing, and historical data tracking.
  • Built an interactive web-based mini game using JavaScript, HTML5, and CSS3.
  • Gained hands-on experience throughout the full software development lifecycle (SDLC).
Featured Work

Projects

01
⌥
Patient Management System

A desktop-based system for efficiently managing patient records and clinical billing. Features patient search, billing generation, and historical data tracking for healthcare workflows.

Java JavaFX MySQL
02
↗ ⌥
Mini Game — Web-Based

An interactive browser game with dynamic gameplay mechanics and a fully responsive UI. Demonstrates DOM manipulation, game loop logic, and smooth user interaction design.

JavaScript HTML5 CSS3
Background

Education & Certifications

// Academic
BSc. Engineering (Hons)
University of Moratuwa, Sri Lanka
Aug 2017 – Sep 2022
GPA: 3.12
G.C.E Advanced Level (A/L)
H/ Rajapaksha Central College, Sri Lanka
Physical Science Stream
PhysicsA
ChemistryA
Combined MathematicsA
// Certifications & Memberships
☁️
AWS Certified Solutions Architect – Associate
Amazon Web Services Training & Certification
🏛️
Member — IESL
Institute of Engineers, Sri Lanka
Get In Touch

Let's Build Something
Together

I'm open to exciting full-stack opportunities, freelance projects, and technical collaborations. Drop me a message and I'll get back to you as soon as possible.

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