Summary
Overview
Work History
Education
Skills
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Certification
Timeline
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Rehan Gamage

Cardiff,UK

Summary

Frontend Lead with 8 years of experience in building and leading high-performance frontend teams. Specialized in React, Angular, and React Native with a deep understanding of modern UI architecture, accessibility, state management, and design systems. Proven track record delivering enterprise-grade applications and mobile-first platforms in SaaS, eCommerce, ERP, and civic tech domains.

Overview

8
8
years of professional experience
2023
2023
years of post-secondary education
1
1
Certification

Work History

Senior Software Engineer

Concentrix Catalyst
London, UK
11.2022 - 05.2025
  • Led frontend architecture and implementation across multiple internal and client projects using Angular, React, and Gatsby.
  • Optimized performance across React and Angular apps by implementing lazy loading, code splitting, and efficient state management.
  • Introduced centralized CSS system and advanced Angular Signals architecture to improve component reusability.
  • Built accessibility-first dynamic form builders for public sector crime reporting tools (COLP project).
  • Mentored frontend engineers and drove UI testing standards using Jest and RTL.

Senior Full-Stack Engineer

Kaddra Pte Ltd
Singapore
03.2021 - 10.2022
  • Developed white-labeled eCommerce web and mobile solutions with React and React Native.
  • Enhanced app performance with image optimization, bundle analysis, and reduced TTI on mobile platforms.
  • Implemented highly customizable UI components and advanced GraphQL-driven marketing tool.
  • Led frontend team, CI/CD pipeline setup with CircleCI, and handled AWS infrastructure (SQS, SNS, EventBridge).

Senior Software Engineer

99x
Sri Lanka
11.2019 - 03.2021
  • Led frontend and mobile development for ERP systems and travel expense tracking apps (UniEconomy, Travel Text).
  • Focused on cross-platform performance optimization using memoization techniques and selective rendering strategies.
  • Enhanced user experience across platforms with CodePush, localization with i18n, and offline-first features.

Software Engineer

Axiata Digital Labs
Sri Lanka
01.2019 - 11.2019
  • Built React Native offline-first DMS application compatible with Android and Telpo devices.
  • Developed native modules for Bluetooth and thermal printer support.

Associate Software Engineer

Fin Technology Asia Pacific
Sri Lanka
08.2017 - 12.2018
  • Worked on .NET, Angular, and React Native-based projects, contributing across frontend and integration layers.

Education

MSc - Technology Project Management

Cardiff Metropolitan University

BSc (Hons) - Software Engineering

Cardiff Metropolitan University

Skills

  • Frontend: React, Angular, React Native, Gatsby, Nextjs
  • State Management: Redux, NGRX, Signal Store, Formik, Yup
  • UI/Styling: Tailwind CSS, Material UI, Bootstrap, Centralized CSS Systems
  • Testing: Jest, React Testing Library, Jasmine, Karma, Appium
  • Tooling/APIs: GraphQL, REST, Strapi, Sanity, Nodejs
  • Cloud/DevOps: AWS, Serverless, CircleCI, Jenkins, AppCenter, SQS, SNS, EventBridge

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Certification

AWS Certified Cloud Practitioner, Amazon

Timeline

Senior Software Engineer

Concentrix Catalyst
11.2022 - 05.2025

Senior Full-Stack Engineer

Kaddra Pte Ltd
03.2021 - 10.2022

Senior Software Engineer

99x
11.2019 - 03.2021

Software Engineer

Axiata Digital Labs
01.2019 - 11.2019

Associate Software Engineer

Fin Technology Asia Pacific
08.2017 - 12.2018

BSc (Hons) - Software Engineering

Cardiff Metropolitan University

MSc - Technology Project Management

Cardiff Metropolitan University

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