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.

Portrait illustration of Lahiru Himesh Madusanka
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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

Oct 2022 — Present Lead Engineer · Cloud Assess Pty Ltd

Leading engineering delivery and product development across distributed teams.

Mar 2021 — Oct 2022 CTO Consultant (Rails) · Remote (DOT) PVT Ltd.

Architected and built Rails 7 applications, improved performance, mentored developers, and delivered production-ready systems.

Aug 2019 — Mar 2021 Research Consultant · StrEdge Tech Solutions PVT Ltd.

Researched niche product ideas, delivered client prototypes, and advised on cloud deployments.

Jun 2018 — Jun 2019 Senior Software Engineer · OutSmartHub PVT Ltd.

Led client discovery, improved code quality, and shipped product dashboards and admin tools.

Aug 2017 — Jun 2018 Software Engineer · OutSmartHub PVT Ltd.

Built C# and C++ products, including reporting dashboards and graphical tools.

Oct 2016 — Aug 2017 Freelance Software Engineer · eezpal

Projects: VPS Panel — Developer (Rails, C++, KVM, MySQL); Portal V1/V2 — Developer (PHP, WHMCS).

Feb 2016 — Oct 2016 Research and Innovation Engineer (Trainee) · Epic Research and Innovations (PVT) Ltd.

Projects: Safe Caller Android Application, AutoAlert Application, CIPE Surge protector.

Mozilla Representative Mentor November 2021 — August 2023
Mozilla Representative March 2018 — November 2021
FOSS Advocate/Representative December 2018 — November 2021

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

Chrome Extensions

Contact

Let’s build something thoughtful together.

Email
Location Colombo, Sri Lanka

Let’s work together