Jeyarathnem Jeyachanthuru, Developer in Singapore, Singapore
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Jeyarathnem Jeyachanthuru

Verified Expert  in Engineering

Front-end Developer

Singapore, Singapore
Toptal Member Since
November 19, 2021

Jeyarathnem is a senior front-end developer with over 11 years of industry experience, with a deep understanding and expertise in HTML, CSS, JavaScript, Node.js, Dart, and UI/UX. He's been involved in many roles, ranging from senior developer to architect, gathering team leadership experience on several projects for local and international clients. Jeyarathnem is keen on fintech, micro-frontends, SPA, PWA, and Flutter, and well-versed in Angular—JS to 12—, Web Components, AMP, and Bootstrap.


Technopal (Supporting Google)
JavaScript, TypeScript, Node.js, CSS, HTML
Life Fitness Singapore International, PTE. LTD.
TypeScript, Angular, Amazon Web Services (AWS), Single-page Applications (SPA)
JavaScript, Dart, Angular, React, HTML, CSS, TypeScript




Preferred Environment

MacOS, Visual Studio Code (VS Code), Teams, Slack, Google Hangouts

The most amazing...

...project I've architected and developed is a celebrity news platform with highly optimized performance and a codebase using Angular Universal and Elasticsearch.

Work Experience

Senior Front-end Developer

2021 - PRESENT
Technopal (Supporting Google)
  • Worked on requirement gathering, analysis, and the execution of project plans.
  • Optimized the HTML, CSS, and JavaScript codes to achieve high performance.
  • Collaborated closely with visual designers and developers to build awesome web templates.
Technologies: JavaScript, TypeScript, Node.js, CSS, HTML

Senior Software Engineer | Application Analyst

2019 - 2021
Life Fitness Singapore International, PTE. LTD.
  • Owned the implementation of functional requirements on web-based applications.
  • Conducted code reviews on the work of other developers.
  • Worked as part of an internationally distributed development team in close coordination with the subject matter experts and the back-end team.
  • Advised on the design and software implementation of processes with which our customers actively interact.
  • Maintained compliance with the principles of component-driven development and clean code, as my responsibility was to ensure the maintainability and code quality of the web app.
  • Developed solutions for high traffic volume-based web solutions and enterprise-level solutions with more than one million unique active users.
  • Worked on requirement gathering, analysis, and execution of project plans.
  • Analyzed and evaluated suitable front-end technologies for solutions.
Technologies: TypeScript, Angular, Amazon Web Services (AWS), Single-page Applications (SPA)

Senior Software Engineer

2018 - 2019
  • Worked closely with visual designers and developers to build awesome web-based applications and websites.
  • Analyzed and evaluated suitable front-end technologies for solutions.
  • Managed a front-end team with more than 10 members.
Technologies: JavaScript, Dart, Angular, React, HTML, CSS, TypeScript

Front-end Engineer and Co-founder

2015 - 2018
  • Gathered the customer requirements, designed the application interface, and performed the development.
  • Handled responsibilities of assigning tasks, mentoring and performing reviews to the codebase.
  • Shared development knowledge under multiple projects that helped in gaining exposure to various technologies.
Technologies: JavaScript, TypeScript, Node.js, HTML, SCSS, CSS

Senior UI Engineer

2014 - 2015
  • Developed an AngularJS application that handles all invoicing and receipt requirements.
  • Gathered requirements and designed the UI/UX as part of my role.
  • Worked closely with back-end developers and integrated the API with the front-end application.
Technologies: JavaScript, HTML, CSS

UI Engineer

2011 - 2014
  • Designed user interfaces and information architectures for mobile apps and websites.
  • Worked with interdisciplinary teams to design and develop London Stock Exchange, the online stock trading and monitoring system.
  • Converted the PSD design into working HTML templates.
Technologies: HTML, JavaScript, CSS

Web Developer

2009 - 2011
  • Designed and coded responsive websites and email templates and integrated them into CMS like WordPress and Joomla.
  • Worked closely with back-end developers to integrate the templates with the back end.
  • Managed the content and maintenance of the production website.
Technologies: JavaScript, HTML, CSS

Access Online
Access Online provides the best in entertainment and celebrity news with video coverage of the hottest celebrity gossips. The website redesign focuses on streaming video content, based on a mobile-friendly responsive design that reflects the look and feel of the on-air show branding, meeting NBCU compliance standards for security and privacy.

My role in this project was to lead the development team consisting of six members: full-stack developers and back-end and front-end developers. Some of my core responsibilities included spearheading the architecture for the front end, reviewing sprint progress, conducting code reviews, and participating in client meetings. The technologies used were Angular Universal, Elasticsearch, and WordPress.

UPay — Payment Service Pvt., Ltd.

UPay simplifies payments to customers and retail merchants. Merchants or customers can add their bank account or credit card and start making utility payments, fund transfers, and QR payments.

I acted as a front-end architect consultant for the mobile hybrid application. I developed most of the components using Vanilla JavaScript.

CPOS — Dialog Axiata PLC

The consolidated point of sale (CPOS) application software handles all the invoicing and receipt requirements in Dialog billing collection scenarios and acts as a gateway between the CRM, the distribution management system (DMS), and other applications in the new Dialog IT environment.

As a front-end lead, I performed the architecture for the front-end SPA application with AngularJS, Sass, Gulp, Kendo UI, and jQuery and managed the front-end team.

London Stock Exchange

London Stock Exchange (LSE) is one of the world’s leading and oldest stock exchange companies based in London. The web-based system designed for LSE is used to connect the external brokers, manage core transactions, trade management, user management, and data maintenance. The web front end implemented will collaborate with the Millennium NewClear back-end system to manage the services mentioned above.

My role in this project was to design, develop, and manage the front-end application. This application was developed with jQuery UI.

HALO — LifeFitness
HALO is a web-based application for managing facilities, equipment, and schedules. This system was developed with two different versions of Angular (1.7 and 9.)

I’m the front-end lead in a team of four people. My major role is to merge both systems into one using micro front end technology and create one SPA library. I used AngularElements (Web Components) to share components with both applications.
2017 - 2019

Bachelor's Degree in Information Technology

Aldersgate College - Philippines


Flutter Development

The App Brewery


jQuery, Node.js, jQuery UI, React


Angular Universal, Gulp, Slack, Google Hangouts, Cucumber, NPM


Angular, AngularJS, Kendo UI, Flutter, Express.js, Protractor


TypeScript, JavaScript, HTML, CSS, SCSS, Sass, HTML5, Dart, Less, Java, C++


Responsive, Responsive Layout, Automation


Web, Visual Studio Code (VS Code), MacOS, Amazon Web Services (AWS), Firebase, WordPress


PSD to WordPress, User Interface (UI), Responsive UI, Teams, Software Development, IT Project Management, Single-page Applications (SPA), Cordova, WebKit

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