Leading engineering delivery and product development across distributed teams.
Lead Engineer · Rails Architect · Product Builder
Building calm systems, playful experiences.
I’m Lahiru Himesh Madusanka. I help teams ship reliable Ruby on Rails products with strong architecture, thoughtful UX, and focused execution.
About
I help SaaS companies and startups build, scale, and stabilise Ruby on Rails applications, from early MVPs to production systems used at scale.
I’m a remote Lead Engineer at an Australian SaaS company and a former startup co-founder with a successful exit. I design maintainable Rails architectures, improve performance and reliability, reduce technical debt pragmatically, and help teams make sound technical decisions under real business constraints.
I work best with growing or stabilising products where clarity and incremental improvement matter. I mentor engineers, strengthen engineering standards, and take end-to-end ownership in distributed teams.
Experience
Architected and built Rails 7 applications, improved performance, mentored developers, and delivered production-ready systems.
Researched niche product ideas, delivered client prototypes, and advised on cloud deployments.
Led client discovery, improved code quality, and shipped product dashboards and admin tools.
Built C# and C++ products, including reporting dashboards and graphical tools.
Projects: VPS Panel — Developer (Rails, C++, KVM, MySQL); Portal V1/V2 — Developer (PHP, WHMCS).
Projects: Safe Caller Android Application, AutoAlert Application, CIPE Surge protector.
Writing
Latest posts from Medium.
Open Source
I’m deeply interested in open source and enjoy building practical tools, Ruby gems, and browser extensions that solve real developer and user problems.
Open Source Projects
winDiskServ
A simple Go application to get disk information of a Windows server over LAN.
OEXRWrapper (Ruby Gem)
OpenExchangeRates.org API wrapper gem for Ruby applications.
dialog_lk_esms (Ruby Gem)
Ruby gem for sending SMS messages via Dialog eSMS API in Sri Lanka, built with dry-rb patterns.
CeylonSaver
Experimental macOS screensaver project focused on displaying photos.
Chrome Extensions
Contact
Let’s build something thoughtful together.