Web ApplicationsLive
Full-featured e-commerce bookstore with bilingual search, bestsellers, and streamlined checkout.
Visit live siteBest Books
Full-featured e-commerce bookstore with bilingual search, bestsellers, and streamlined checkout.
I Am Lahiru Harshana
SOFTWARE ENGINEER
I design and build scalable web applications, RESTful APIs, and cloud-ready systems for startups and businesses — from idea to production.
Full-Stack Web DevelopmentAPI Design & IntegrationCloud & DevOps
Software Engineer & Full-Stack Developer
3+
Years of Experience
12+
Projects Completed
5+
Live Production Apps
14+
Technologies Used
About Me
I am a Software Engineer focused on building reliable, scalable digital products that solve real business problems. I work across the entire development lifecycle — from planning and architecture to deployment and long-term support.
My core strengths include React and Next.js on the frontend, Node.js and TypeScript on the backend, and cloud-native deployments with Docker and AWS. I care about performance, security, and code quality in every project I deliver.
Whether you need a new product built from scratch, an existing system modernized, or APIs integrated into your stack, I bring structured communication, clean engineering practices, and a results-driven mindset to every engagement.
Technical Expertise
SKILLS & TECH STACK
Frontend
ReactNext.jsTypeScriptJavaScriptTailwind CSSHTML5CSS3
Backend
Node.jsNestJSREST APIsGraphQLExpressAuthenticationMicroservices
Database & Storage
PostgreSQLMongoDBRedisPrismaDatabase Design
DevOps & Cloud
AWSDockerCI/CDGoogle CloudLinuxNginx
Mobile & Tools
React NativeFlutterGitGitHubAgile/ScrumFigma
Career Journey
WORK EXPERIENCE
Full-Stack Software Engineer
Freelance / Independent
2023 — Present
Weligama, Sri Lanka · Remote
- —Design and deliver production web applications for e-commerce, hospitality, and retail clients.
- —Built and launched live platforms including Best Books, Roots Groceries, and Riverwood Villa.
- —Own the full stack from UI and API design to deployment, performance, and maintenance.
Project Manager
EonTech Global Group
2022 — 2023
Sri Lanka · On-site
- —Led software projects from requirements gathering through delivery and client handoff.
- —Coordinated cross-functional teams to ship products on schedule with high quality standards.
- —Translated business goals into clear technical roadmaps and sprint plans.
Project Manager
LammastideIT
2021 — 2022
Sri Lanka · Hybrid
- —Managed end-to-end software development lifecycles for multiple client engagements.
- —Organized workflows, timelines, and communication between developers and stakeholders.
- —Ensured timely delivery of web and mobile solutions across active project pipelines.
Software Engineering Intern
Embracetec
2020 — 2021
Sri Lanka · On-site
- —Contributed to real-world software projects with a focus on problem-solving and clean code.
- —Gained hands-on experience in full-stack development, debugging, and team collaboration.
- —Demonstrated strong technical maturity and quickly adapted to production codebases.
What I Specialize In
MY SERVICE
Full-Stack Development
Building end-to-end web applications using React, Next.js, Node.js, and TypeScript. From database design to user interfaces, I deliver complete solutions.
Backend Engineering
Designing robust server-side architectures, RESTful APIs, and microservices using Node.js, NestJS, PostgreSQL, and MongoDB for scalable performance.
Frontend Development
Crafting responsive, accessible, and performant user interfaces using React, Next.js, Tailwind CSS, and modern JavaScript frameworks.
Mobile Development
Developing cross-platform mobile applications using React Native and Flutter, delivering native-like experiences on iOS and Android.
API Development
Building secure, well-documented APIs with authentication, rate limiting, and comprehensive error handling for seamless integrations.
DevOps & Cloud
Implementing CI/CD pipelines, containerization with Docker, and cloud deployments on AWS and Google Cloud for reliable infrastructure.
How I Work
DEVELOPMENT PROCESS
01
Discovery
Understand business goals, user needs, and technical constraints before writing a single line of code.
02
Architecture
Plan scalable system design, choose the right stack, and define APIs, data models, and delivery milestones.
03
Development
Build responsive interfaces and robust backends with clean, maintainable, and well-tested code.
04
Deploy & Support
Ship to production with CI/CD, monitor performance, and iterate based on feedback and analytics.
Portfolio
WORK I HAVE DONE
Selected client work and personal builds — production sites, mobile apps, and backend systems.
Web Applications
Scalable online store with product catalog, cart, and secure payment integration.
E-Commerce Web App
Scalable online store with product catalog, cart, and secure payment integration.
Mobile Apps
Cross-platform mobile UI with intuitive navigation and responsive component design.
Mobile App Interface
Cross-platform mobile UI with intuitive navigation and responsive component design.
Backend Systems
Admin dashboard for monitoring APIs, users, and system metrics in real time.
Backend Dashboard
Admin dashboard for monitoring APIs, users, and system metrics in real time.
Web Applications
Multi-module web platform with role-based access and modular feature architecture.
Web Platform
Multi-module web platform with role-based access and modular feature architecture.
Mobile Apps
Native-feel mobile app with offline support and push notification integration.
Mobile Application
Native-feel mobile app with offline support and push notification integration.
Mobile Apps
Mobile shopping experience with authentication, cart management, and order tracking.
EZ Cart
Mobile shopping experience with authentication, cart management, and order tracking.
Web Applications
Travel agency website showcasing packages, destinations, and inquiry workflows.
Elysian Travels
Travel agency website showcasing packages, destinations, and inquiry workflows.
"Lahiru is an exceptional Project Manager. His ability to bridge the gap between technical requirements and business goals ensured our projects at EonTech were delivered on time and with top-notch quality. A true leader."
Hirusha Jaayasinghe
CEO, EonTech Global Group
From Our Blog
LATEST NEWS
January 20, 2026
By Lahiru H.Backend Development
Building Scalable APIs with Node.js and TypeScript
Learn the best practices for designing and implementing RESTful APIs that can handle millions of requests with proper error handling and authentication.
READ MORE →January 15, 2026
By Lahiru H.Frontend Development
React Performance Optimization Techniques
Discover advanced techniques for optimizing React applications including memo, useMemo, useCallback, and code splitting strategies.
READ MORE →January 10, 2026
By Lahiru H.DevOps & Cloud
Deploying Applications with Docker and AWS
A comprehensive guide to containerizing your applications with Docker and deploying them to AWS using ECS, ECR, and other cloud services.
READ MORE →Get in touch
CONTACT
Get In Touch
Available for freelance projects, contract work, and full-time opportunities. I typically respond within 24 hours. Let's discuss your requirements, timeline, and how I can help ship your next product.
Address
Weligama, Matara, Sri Lanka
Phone
+94 782902200