Vernice Do - Java Developer

Vernice Do

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Vernice Do

Gender

Male

Language

English - Advanced

Main expertise

Java AWS Cloud AWS Full-stack Back-end Vue.js Spring MongoDB AWS Lambda .NET C#React.js

Introduction

Vernice is a seasoned software developer with over 5 years of experience working on a wide variety of projects. With a rational approach to problem-solving, Vernice focuses on delivering innovative and fresh solutions. Technically proficient and industry-aware, Vernice ensures that each project utilizes the most current and relevant programming foundations available. Vernice is a strong communicator who is adept at clearly conveying ideas, always prioritizing client satisfaction. Vernice possesses significant expertise in Java, AWS, Git, MongoDB, and relational databases. Additionally, Vernice has experience with operating systems such as Windows and Linux, as well as technologies like Kubernetes, OpenSearch, and Docker. Vernice also has knowledge in NodeJS, ReactJS, VueJS, CSS, and C#. Having worked directly with partners from Singapore, Hong Kong, Thailand, and Japan, Vernice is proficient in verbal English communication.

Project list

AWS Cost Optimization for Dental 3D Printing - Singapore

2024

Optimized AWS costs for a major 3D printing company in Singapore by operating the system and resolving API breakdowns in a production environment.

Reduce the cost of AWS in the production environment. Migrate all EKS clusters to a new version. Use A/B testing to evaluate downgrading EC2 instance versions. Independently achieve cost reductions without affecting the active production environment.

Technologies: AWS services including: EKS, MSK, S3, EC2, Load Balancer...

Financial Reporting and Management System - Singapore

2024

Developed a system for generating financial reports for an outsourcing company in Singapore, including a new batch payment feature.

Use Hutool and Apache Poi to create Excel reports and PDF preview files. Code, self-test, and deploy new features to staging and production environments.

Technologies: Java, Spring Boot 3, VueJS, MongoDB

ERP System for a Japanese Hardware Company

2023 - 2024

The project involves managing all partners of a Japanese hardware company. It includes the utilization of authorization mechanisms to grant partners access to specific features. The system also manages products, notifications, and files shared by the company with its branches and partners.

Design the system architecture and create the entire AWS infrastructure, including VPC, Security Groups, EC2 Instances, RDS, OpenSearch, and Lambda. Configure email sending with SES. Set up Lambda functions to hash files uploaded to S3. Create OpenSearch mapping structure. Configure language analyzers to enable searching by Kanji Japanese keywords. Set up CloudFront for S3 static hosting and configure the Load Balancer (EC2) to integrate with the customer's existing domain. Perform coding, code reviews, and system operations.

Technologies: Java, Spring Boot 2, NodeJS (Lambda functions), ReactJS, VPC, Security Group, EC2, RDS, OpenSearch, Lambda, S3, CloudFront, Load Balancer, Route 53, SQS, SES..., RDS MySQL

Party Booking Management System - Thailand

2023 - 2023

This system manages the entire process of booking parties for clients in Thailand.

Write backend API for new modules. Fix bugs and maintain the modules. Create EC2 Linux server to run backend API and deploy web app to S3 web hosting (Staging environment). Use CloudFront and Load Balancer to configure HTTPS. Purchase domain and configure DNS with Amazon Route 53.

Technologies: Java, Spring Boot 2, ReactJS, EC2, S3, CloudFront, Route 53, Load Balancer, MySQL

Telecommunication Process Management System - Hong Kong

2022 - 2023

Developed a management system for overseeing telecommunication processes, such as eSim and RNR Portal, for a major telecommunications company in Hong Kong (confidential client).

Write backend API for new module. Fix bugs and maintain existing modules. Communicate directly with customers to gather tasks.

Technologies: JSP servlet

Insurance Management Software

2022 - 2022

Developed a system to streamline the processes of an insurance business for a major global insurance company. This involved handling confidential information efficiently.

Write unit tests for existing modules using Mockito. Write backend APIs for new modules. Execute test cases. Fix bugs and maintain the modules.

Technologies: Backend: Java, Spring Boot 2, Kafka, Apache Hive

Document Management System Enhancement

2022 - 2022

Developed a document management feature by enhancing an existing system.

Code with Google Web Toolkit (GWT) to create the user interface. Write backend APIs for new modules. Deploy and manage the local testing server. Fix bugs and maintain the project.

Technologies: Java, Spring Boot 2, GWT, CSS

Political Management System

2021 - 2021

Developed a document management feature for another project, based on an existing document management system.

Code using GWT, a Java framework that allows developers to create user interfaces. Write backend APIs for new modules. Deploy local testing server. Fix bugs and maintain the project.

Technologies: Java, Spring Boot 2, GWT, CSS, MySQL

Automated Test Development for Websites - Singapore

2021 - 2021

Developed and executed automated tests for various websites, following specific test cases for an outsourcing company based in Singapore.

Write code and execute automated tests. Maintain the projects. Communicate with clients to obtain new test cases for automation.

Technologies: Java, Spring Boot 2, Selenium

Comprehensive University Management System

2021 - 2021

The system includes three modules: 1. Manage postgraduate/PhD students by handling their information and tracking all activities required to obtain a PhD/Doctorate certificate. 2. Oversee university enrollment processes, including managing candidate scores for filtering, sorting, and evaluation. 3. Administer university policies, ensuring logic conditions are met for granting student subsidies such as tuition fee reductions and allowances.

Code backend API and frontend components, and confirm requirements with BrSE/BA for the first and second modules. Directly collaborate with the customer's BrSE/BA to understand business logic and design the database for the third module. Code and deploy applications to the local server. Review code for quality assurance. Deliver the finalized code to the customer.

Technologies: Java, Spring Boot 2, VueJS, MySQL

Advanced Document Management System

2020 - 2020

A management system for organizing and handling documents, developed using an open-source platform, and enhanced with custom features.

Code additional features. Renew the entire user interface using GWT (Java to create the user interface, using a Java-to-JavaScript compiler). Deploy and manage a local testing server. Fix bugs and maintain the project.

Technologies: Java, Spring Boot 2, GWT, CSS, MySQL

E-commerce Chat Management System

2020 - 2020

This project involves managing chat timelines, including features such as adding new posts, comments, and replies. It also includes favoriting or subscribing to posts, receiving notifications on new replies to subscribed posts, reactions to posts, and notifications for replies to one's comments.

Code according to documentation and confirm requirements with the Business Analyst and BrSE. Code backend APIs and ensure adherence to coding conventions. Deploy a local testing server. Cross-review source code with other team members. Fix bugs and maintain the project.

Technologies: Java, Spring Boot 2, Jhipster, Oracle

Property and Investment Management System

2020 - 2020

This project includes a Warehouse Management System (WMS) module and an Investment Management System (IMS) module, focusing on enhancing both modules for better functionality and efficiency.

Develop additional backend APIs and update the user interface of the existing project. Conduct code reviews to ensure adherence to coding conventions. Fix bugs and maintain the project to ensure stability and performance.

Technologies: Java, Spring Boot 2, Oracle

Department Line Management System

2019 - 2020

Developed modules for tracking employee In/Out timings and managing lunch orders

Code backend APIs. Code frontend interfaces. Implement API calls and manage user interactions.

Technologies: Java, Spring Boot 2, VueJS, Oracle

Digital Transformation for Vietnam Customs Department

2019 - 2019

Developed various modules including staff reporting results, report management, and personal information management.

Code according to documentation and confirm requirements with team leader. Code backend APIs using Entity Framework, ensuring adherence to coding conventions. Conduct cross-reviews of source code with other team members.

Technologies: C#, Entity Framework, AngularJS, SQL Server

Project list

Education

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