Architecture ownership
I think through system boundaries, API contracts, data modeling, authentication, deployment flow, and future maintenance before the codebase grows expensive to change.
Available for serious product buildsColombo, Sri Lanka
Software Engineer / Founder / UI-led Builder
Lahiru Udayakumara
Outcome-driven Software Engineer with 2+ years of experience designing scalable, high-performance digital solutions. I build intuitive applications, optimize system architecture, and deliver reliable products across web, mobile, backend, IoT, and creative visual systems, with special interest in connected-device platforms and production-ready monitoring tools.
Current focus
Scalable product engineering
Core strength
Full-stack, IoT, and open-source systems
Creative edge
UI/UX, 3D visuals, and product polish
2+
years delivering production software
20+
software, product, IoT, and visual builds
2025
founded OpenCorex for open-source engineering
Developer profile
Senior-level value beyond writing features.
I operate best where the work needs both engineering depth and product taste: turning unclear requirements into maintainable systems, improving user experience, and making delivery feel steady.
Product engineering
I connect technical choices to the user journey: fast interfaces, clear states, useful flows, accessibility-minded components, and thoughtful visual hierarchy.
Delivery judgment
I reduce ambiguity early, split work into shippable slices, document tradeoffs, and keep quality high without turning every decision into over-engineering.
Team-level value
I bring clean handoffs, readable code, practical reviews, debugging discipline, and calm ownership when a product needs to move from idea to reliable release.
Experience depth
Production experience across products, teams, and clients.
I have worked across startup-style delivery, international client platforms, open-source leadership, and freelance client execution. That mix gives me a practical view of quality, speed, and long-term maintainability.
DreamGen Labs
April 2024 - Present
Software Engineer
Designing and maintaining scalable web and mobile applications across the full software lifecycle, from requirements and implementation to testing, deployment, optimization, and maintenance.
Bitzquad
July 2024 - January 2025
Software Engineer Intern
Contributed to an international workforce and operations management platform, improving user experience, platform functionality, and architecture adaptability with cross-functional teams.
OpenCorex
April 2025 - Present
Founder & Lead Developer
Leading an open-source organization focused on innovative developer tooling, strategic project direction, clean architecture, and hands-on implementation.
Fiverr
November 2019 - Present
3D Artist
Delivering customized 3D design solutions for international clients using 3ds Max, V-Ray, KeyShot, and Photoshop while maintaining deadlines and client satisfaction.
Senior-level profile
A sharper mix of engineering, systems, and creative execution.
I move between product thinking and implementation: shaping the interface, building the backend, improving the delivery path, and making the final experience feel intentional.
Product-grade interfaces
Modern web experiences with strong UX, responsive systems, and the polish users feel before they notice it.
Backend architecture
APIs, authentication, databases, and deployment flows shaped around reliability, clarity, and scale.
Mobile and cross-platform builds
Flutter, Android, and web products built with practical tradeoffs and real-world delivery in mind.
IoT and connected systems
Connected-device workflows across embedded hardware, real-time communication, monitoring dashboards, and scalable cloud-backed management.
Open-source engineering
Community-minded tooling, reusable frameworks, clean architecture, and maintainable foundations built for developer adoption.
Rescue and refinement
Debugging, performance cleanup, refactors, and launch-readiness work for products that need sharper execution.
Working stack
Tools chosen for shipping, not decoration.
TypeScript
React
Next.js
Angular
Node.js
Spring
Flutter
MongoDB
PostgreSQL
Docker
GitHub Action
IoT specialty
Connected-device engineering is one of my strongest lanes.
I work across the device layer, communication layer, application layer, and cloud-backed management layer. That means I can shape the experience from sensor and device behavior all the way to the dashboard, mobile app, and operational workflow around it.
Device layer
Arduino, ESP32, connected sensors, embedded workflows, hardware-aware application logic
Connectivity
MQTT messaging, device communication patterns, secure configuration flows, real-time monitoring
Application layer
React Native mobile apps, React admin portals, device dashboards, operational visibility tools
Cloud and delivery
AWS-backed reliability, scalable backend support, remote device management, maintainable production rollout
Open-source focus
Open source is part of the core engineering profile.
I approach open-source work as real engineering: reusable systems, contributor-ready structure, maintainable architecture, and developer tools that can grow with a community.
Community building
Leading OpenCorex as an open-source engineering community with technical direction, project ownership, and contributor-facing structure.
Developer tooling
Building frameworks, packages, reusable project foundations, and maintainable codebases intended to be used and extended by other developers.
Architecture quality
Focusing on clean structure, extensibility, documentation clarity, and decisions that help open-source projects stay readable as they grow.
Sustainable delivery
Treating open-source work like production work: practical scope, strong implementation, release discipline, and long-term maintainability.
Skills summary
Broad stack, practical depth, delivery-focused choices.
My stack covers frontend, backend, cloud, data, automation, embedded systems, and product design. I choose tools based on product needs, team maintainability, and deployment reality.
Languages
Kotlin, JavaScript, TypeScript, Python, Java, PHP, C, C++, C#, Go, Rust, Ruby
Frameworks
Express.js, Spring Boot, NestJS, Next.js, Angular, React Native, .NET, Django, Flask
Platforms
AWS, GCP, Firebase, Vercel, Netlify, Power BI, Jupyter Notebook, Draw.io
Data and IoT
PostgreSQL, MySQL, MongoDB, Firebase, Arduino, ESP32, MQTT, sensor integration
Delivery tools
Git, Docker, GitHub, GitLab, GitHub Actions, Postman, VS Code, JetBrains IDEs, Figma
Frontend libraries
React.js, Material UI, Tailwind CSS, Redux, Bootstrap, responsive design systems
Engineering scope
Systems I can take from concept to stable release.
Recent work spans IoT device management, backend framework design, npm package delivery, ERP workflows, and full-stack operational platforms.
IoT device management platform
June 2025 - Present
Cross-platform React Native mobile app and React admin portal for real-time IoT monitoring, secure device configuration, and AWS-backed operational reliability.
React Native, React, AWS, TypeScript
BackStem backend framework
April 2025 - Present
Modular TypeScript backend framework with decorators, dependency injection, CLI tooling, plugin extensibility, and monorepo-ready structure.
TypeScript, Node.js, custom HTTP server, Next.js docs
React Helmet Pro
April 2025 - Present
React and Next.js head manager with SSR support, SEO tags, JSON-LD, and middleware-oriented integration for production metadata workflows.
React, Next.js, TypeScript, npm package delivery
ERP system for marine operations
January 2025 - May 2025
Custom ERP workflows for invoicing, payroll, employee management, reporting, role-based access, and real-time alerts.
Next.js, MongoDB, Firebase
Open source
Building OpenCorex as a cleaner place for practical developer tools.
OpenCorex is an open-source organization focused on clean architecture, high-performance systems, and collaborative development. It gives contributors a place to build real-world software with care.
Contact
Have a product, role, or collaboration in mind?
Send a clear brief and I will get back with the next useful step. I am especially interested in thoughtful product work, open-source systems, and creative technical builds.
