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Yern Voon O. - Fullstack Developer, React Native, nextjs

Being part of Softaims has allowed me to see the full spectrum of what technology can achieve when guided by empathy, discipline, and creativity. Each assignment, regardless of size, represents an opportunity to bring clarity to complexity and to turn ambitious ideas into tangible outcomes. I’ve come to realize that successful development isn’t just about writing code—it’s about listening carefully, understanding deeply, and designing thoughtfully. Every client brings unique challenges, and I make it a priority to align my work with their goals, ensuring that the end result is both effective and lasting. Softaims fosters an environment where collaboration is not optional—it’s essential. The collective expertise within the team pushes me to think beyond conventional boundaries, to question, refine, and innovate. I believe that this process of shared learning and experimentation is what makes our solutions resilient and impactful. My ultimate goal is to build technology that feels effortless to use yet powerful in function. I approach every task with the mindset that small details can make a big difference. Through continuous refinement and dedication, I aim to contribute to the kind of work that not only serves today’s needs but anticipates tomorrow’s possibilities.

Main technologies

  • Fullstack Developer

    15 years

  • Full-Stack Development

    7 Years

  • AI App Development

    10 Years

  • AI Model Integration

    12 Years

Additional skills

  • Full-Stack Development
  • AI App Development
  • AI Model Integration
  • Back-End Development
  • LangChain
  • AWS Lambda
  • Amazon DynamoDB
  • Amazon S3
  • Amazon Cognito
  • AWS AppSync
  • Serverless Stack
  • node.js
  • Python
  • Next.js
  • React
  • Artificial Intelligence
  • React Native
  • nextjs

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Experience Highlights

Round Here

RoundHere is a restaurant rating application that allows Facebook users to rate their favourite restaurant in a location. User could submit up to 3 favourite restaurant in a location, view the top rated restaurants in any location and view the favourite restaurant of their Facebook friends. My responsibilities: - The only developer - Coordinate with Web Designer to implement the HTML and CSS according to the sketch files. Technology Stack: - Frontend: Angular 6, Semantic UI, deployed in AWS S3. - Backend: API Gateway, Lambda - User Authentication and Authorization: Cognito with Facebook - External Services: Algolia Search, Algolia Places, Foursquare, Google Analytics, Addthis

WADAT

This project involved developing a web application for tracking wireless sensors. It allows end users to do the followings: 1. Purchase sensors and attach to anything that the end users would like to track 2. Track the sensors’ locations in real time 3. Set up proximity alert, distance alert or linger alert. When the sensors move away from the configurable proximity, travel more than the configurable distance or stay stationary longer than the configurable time interval. The application will send out the email notification to the end users in different notification settings. This project consists of 2 parts: 1. an Angular2 Web Application deployed in Amazon S3. The web application communicates with the backend services through Amazon API Gateway and Amazon Lambda function. The locations of the sensors are displayed using Google Map. 2. A Nodejs batch job that deployed in Amazon EC2 which continuously receiving network packets sent by the wireless sensors, process the data, and upload to the database. The database used in this application is a PostgresSQL which runs in Amazon RDS. The database has PostGIS enabled in order to utilise geometry optimised functions to determine the location and distance between different geometry types. I am the core developer in this project (out of 2 developers). I’m responsible in designing and developing 90% of this project. Technology stack: 1. Angular2 with angular CLI and Bootstrap. 2. Google Map 3. Nodejs 4. Serverless Framework 5. PostgreSQL with PostGIS 6. Amazon S3, EC2, RDS, API Gateway, Lambda and SNS 7. Auth0 service

ETS Classroom Video Library

This contract consists of 2 projects. - The first project is covered under non-disclosure agreement. No details is available. Please check out client feedback. - The second project involved developing a nodejs web application for sharing more than 2000 videos with the application subscribers. The subscribers could easily browse and view these 2000+ tagged and edited videos which are related to educator professional development, and they could also create shorter video clip from these videos for use. The application also exposes a set of well-designed API for API subscribers to easily display and use these videos or clips from their own website. My responsibilities: - Consult customer on the most suitable technology stack to be used - Design and develop the process to store 2000+ videos in Amazon Web Service S3 and use Amazon Elastic Transcoder to transcode the videos in different format to support all browsers. - Design and develop video sharing API for API subscribers - Design and develop video usage analysis mechanism and billing UI for admin. - Provide support after production Technology stack used: - angular.js - twitter bootstrap - node.js - mongodb - AWS EC2 - AWS S3 - AWS Elastic Transcoder - Rackspace Objectrocket

Negotiation Information System

This project involved developing a nodejs web application for school boards and school administrators to update salary and benefits information about Teachers, Paraprofessionals, Caferia, Clerical and Custodial. Other than data entry, it also provides a set of predefined reports that allow the users to view the data in many different ways, such as percentiles and rankings by district and dollar value. And also, a powerful Data Explorer allows users to create their own report by selecting districts, years, and the data fields. These reports allow users to do sophisticated sorting, filtering and also export the data to Excel and PDF formats. My responsibilities: - The only developer in this project - Consult the client on the most suitable technology stack to be used - Designing and developing the entire Nodejs backend - Designing and developing the data model in mongodb database - Designing and developing the entire UI using extjs - Deploy the application in Amazon Web Service EC2 instance - Provide support to project client after production Techonology stack used: - Extjs - Nodejs - Mongodb - AWS EC2 - Rackspace Objectrocket

Education

  • The University of Melbourne

    Bachelor of Engineering (BEng) in Computer engineering

    1998-01-01-2001-12-01

Languages

  • English
  • Chinese