Kasun Peiris
Head of Frontend
I've spent the last 13 years building web platforms and the teams that ship them — design systems, frontend architecture, and interfaces people actually use across SaaS, Web3, e-commerce, POS, and enterprise products.
Currently leading the frontend team at BuildBear Labs, while continuing selected work through Karapincha Studio. Based in South Asia (Sri Lanka), UTC+5:30.
Selected Impact
BuildBear Labs
The design system and frontend behind a Web3 developer-testing platform — explorer, dashboard, faucet, and an LLM-assisted docs portal with a JSON-RPC playground. In a year it cut design-engineering time by 60% and frontend bug reports by 90%.
RareSkills
Moved this content-heavy site off WordPress onto Next.js with zero downtime, carrying over 220+ LaTeX-heavy posts and wiring up a GitHub-to-Next.js publishing pipeline along the way.
ET Cloud POS
A cloud POS now running in 70+ retail locations for 40+ businesses. Built around keyboard-first workflows and touch input, with 20+ modules for the day-to-day of running a shop.
Tesla Owners UK
A membership platform serving 20,000+ members, built on Next.js and headless WordPress with GraphQL, payments, e-commerce, and a super-admin portal behind the scenes.
John Morris Group
A custom B2B storefront for lab equipment — 150+ components and 50+ templates covering checkout, quote requests, and faceted filtering across a large catalog.
NZ Safety Blackwoods
Led a five-engineer team as contractor on the frontend infrastructure for industrial POS and asset-management systems used by enterprise clients.
Career History
BuildBear Labs
Mar 2024 - Present
Head of Frontend
Karapincha Studio
2020 - Present
Founder & Principal Engineer
Amplifyn
2018 - 2020
Tech Lead (Frontend)
Amplifyn
2016 - 2018
Senior Software Engineer
AccelAero (ISA FZE)
2015 - 2016
Senior UI Engineer
ESOFT Metro Campus
2014 - 2015
Frontend Engineer
Web Choice Online
2013 - 2014
Trainee Designer and Developer
Skills
Frontend
The everyday tools for building fast, well-architected web apps that hold up in production.
Web3
Developer tooling and blockchain interfaces — the wallet connections, RPC flows, and infrastructure that sit underneath them.
Design Systems
Starting from design and building out accessible, reusable components that stay consistent across products.
State and Data
Keeping complex interfaces predictable — application state, data fetching, URL state, and the content that flows through them.
Performance and Accessibility
Making interfaces fast and usable for everyone — thoughtful rendering choices, real keyboard support, and quality you can measure.
Backend
Enough of the stack to ship end to end — APIs, CMS integrations, deployment, automation, and the tooling around them.
Collaboration
Working closely with product, design, and engineering — through documentation, mentorship, and handoffs that actually land.
Side Projects
Email me about design, frontend, or product work at peiris@kasun.io
