Kavinda Sumanaweera

Product Manager + Developer - Freelance

June 2022 - Present

• - Designed and shipped 10+ landing pages and web applications for B2B and consumer clients using React, Next.js, and TypeScript; 3 projects exceeded 10k monthly active users.
• - Acted as both Product Manager and Lead Engineer on 2 engagements: defined requirements directly with stakeholders, triaged features by business impact, and delivered on time.
• - Revamped existing web apps for 2 clients, improving average Lighthouse performance scores from ~60 to 90+.
• - Prioritised backlog and managed release cycles solo, shipping an average of 2 features per week per client.
• - Built WordPress custom themes and plugins for clients with non-technical teams, reducing their time-to-update by ~70%.

Front End Engineer, ShoutOUT Labs

June 2018 - May 2022

• - Developed responsive web applications to ensure optimal performance on various devices.
• - Architected and owned a reusable component library (40+ components) adopted across 4 internal products, cutting UI development time by an estimated 35%.
• - Designed wireframes on Adobe XD and translated into pixel-perfect, accessible UIs, reducing design QA cycles by 50%.

Frontend Developer, Endline Solutions

January 2016 - April 2018

• - Delivered 6 responsive web applications for clients across retail and healthcare, specialising in React with a focus on cross-browser compatibility and WCAG accessibility.
• - Collaborated with design and backend teams in an Agile squad of 5, consistently shipping sprint goals on time.
• - Implemented reusable React components that reduced per-project setup time by ~30%.
• - Implemented reusable React components to streamline development workflows and maintain code consistency.
• - Stayed current with emerging web standards, introducing CSS Grid and Flexbox patterns that were adopted team-wide.

ShoutOUT CRM Platform

Customer engagement platform and landing page serving 300+ business clients. Led the full product lifecycle from wireframing and UI design through to frontend build using ReactJS and Bootstrap. Owned the component architecture, ensuring scalability across future feature additions.

Second Chance (Prison Healthcare Platform)

A platform for doctors and clinics to monitor and record patient details of inmates in a prison in Nevada, US. Developed pixel-perfect views from Figma designs using Next.js and TypeScript. Styled the application with Tailwind CSS and connected the backend.

Ramset Verigate (Automated Gate Management)

Next.js-based app for managing access to automated gate systems, integrating Redux for state management and GraphQL for data communication. Implemented a cross-browser compatible, mobile-responsive frontend using TypeScript. Enhanced user experience with a seamless and secure device management interface.

GoCoCo AI App

Client-facing Christmas gift recommendation app built with ReactJS and Tailwind CSS. Led all frontend development, implementing GraphQL for efficient data handling and delivering a seamless, branded UI on a tight 3-week timeline.

Vision Care Loyalty Customer App (React Native)

Consumer-facing React Native mobile app for loyalty tracking, used by thousands of end users. Designed a scalable UI component architecture, integrated backend APIs, and optimised rendering performance across iOS and Android devices.

Perera and Sons Family First - Loyalty Portal

Customer-facing loyalty portal for tracking and redeeming points and transactions, built with ReactJS and Bootstrap. Focused on UX simplicity and engagement, leading to a measurable increase in daily active users post-launch.