Role:

• Work as a Backend and Frontend Developer for HROS Project.
• Lead 2 team member in backend team
• Support devops team create CI/CD and deployment
• Provide the solution
• Review code of team member
• Report to direct manager

Feature

• Employee Management: Centralize employee data, onboarding/offboarding.
• Time Tracking: Easy check-in/out, timesheet submission,time-off requests.
• Project & Client Oversight: Manage projects and customer
• Expense and assets management: Manage the expense and assets of employee
• And more...

Platforms:

• Employee Platform: Access by employees of the company
• Admin Platform: Access by permission, which employee have permission could access this platform
• Super Admin Platform: Access by Product Owner, Sales team, use to manage the subscription and config for each tenant
• Mobile App: Mobile version of Employee Platform, run on Android and IOS

Architectures:

• Integrate with some service of Google like Calendar, Meet, Firebase
• Real-time system with Socket.IO
• Microservices architecture
• Micro frontend architecture
• Multi-tenancy architecture
• Dynamic Role & Permission system
• 100% Codes using Typescript

Main Tech stack:

• MongoDB:

  Why MongoDB but not any relational DB:

  • We are on development state so the data could change frequently, MongoDB have flexibility to change the data structure
  • The company will have a lot of reports everyday, with MongoDB we could generate the report separate with the main data easily

• Redis

  What is Redis used for?

  • Caching: HROS use by many tenant, each tenant have different config for their company, when the service started, we store the config to Redis to increase performance
  • Role and permission caching: We have dynamic Role and Permission for each user/employee, example the user with Permission "HOME_PAGE_VIEW" they could access the Home page only, we want to prevent this user using Postman or any other tools to fetch the data, we cache the endpoints of the Permission, "HOME_PAGE_VIEW" will have endpoint GET /api/posts so the service could validate base on the endpoint and allow or denied access
• NodeJs

• NestJs

  Why NestJs but not any other framework?

  • Dependency Injection: With a little "magic" of decorator, we can easily write cleaner code without creating class instance with keyword "new"
  • Data transform object: With class validator and class transform we combine the code of validation and interface, cleaner code, easy maintain
• NextJs

Achievement:

• Snap award - Best employee in 2nd Quarter 2023

Role:

• Frontend and Backend developer
• Setup VPS and deploy services
• Provide the solution

Project

• King wallet: October 2020 - May 2021

  King Wallet is a secure and convenient digital wallet solution that empowers users to store, manage, and transact various cryptocurrencies with ease. With a user-friendly interface, King Wallet allows users to:

  • Secure Storage: Securely store popular cryptocurrencies with advanced security measures such as multi-layer encryption, two-factor authentication (2FA), and password protection.
  • Portfolio Management: Easily track and manage your cryptocurrency investment portfolio, view balances, transaction history, and asset values in real-time.
  • Fast Transactions: Conduct cryptocurrency transactions quickly and easily with competitive fees.
  • Multi-Platform Support: Access and manage your wallet across multiple platforms, including mobile devices (iOS and Android) and web browsers.
  • Notifications and Alerts: Receive notifications about price fluctuations, transactions, and other important events related to your account.

• King investment: May 2021 - September 2021

  King Investment is a smart cryptocurrency investment platform that enables users to earn passive income daily. The platform offers:

  • Simple Investing: Easily deposit cryptocurrencies into various investment packages with flexible return rates and investment durations.
  • Daily Returns: Receive regular daily returns calculated based on the investment amount and chosen investment package.
  • Reports and Statistics: Monitor your investment performance through detailed reports and intuitive statistics.

• King live: May 2021 - May 2022

  King Live is a live streaming platform that allows users to interact directly with viewers and receive donations in cryptocurrencies. King Live offers:

  • Easy Live Streaming: Easily broadcast your live video from various devices.
  • Direct Interaction: Interact with viewers through chat, comments, and other interactive features.
  • Receive Donations: Receive donations from viewers in various cryptocurrencies.

Tech stack

• MongoDB
• NodeJs
• ReactJs

• HTML
• CSS
• Javascript
• NodeJs
• MongoDB

Order Of Angel: 2020 - Present

Description

Order Of Angel is a mobile/web real-time strategy (RTS) game where players build and command armies to conquer rival castles and expand their dominion. Strategic unit composition and resource management are key to success. The game features diverse unit types, each with unique abilities, demanding careful consideration when building your forces.

Features:

• Multi worlds (multi tenancy)

  The game supports multiple distinct worlds, allowing for isolated player bases and economies. This multi-tenancy architecture provides scalability and the potential for diverse world settings or rule sets. Players can choose which world they wish to participate in.

• Generate resource per seconds

  Players generate resources (e.g., gold, wood, food) passively over time. The rate of resource generation can likely be upgraded or enhanced through various in-game mechanics.

• Unit Training

  Players can train a variety of units, each possessing unique strengths, weaknesses, and special abilities. Careful consideration of unit composition is crucial for effective army deployment. Training likely involves resource expenditure and time investment.

• Castle Conquest and Construction
  • Conquest: Players can attack and attempt to conquer other players castles. Success in battle allows the victor to claim the conquered castle and its resources.
  • Construction: Players can also establish new castles on unoccupied territories on the world map. This allows for strategic expansion and control of key resource locations.
• Unit Enhancement

  Units can be enhanced or upgraded to improve their combat effectiveness

• Resource Stealing

  Players can attempt to raid or steal resources from other players castles. This adds an element of risk and reward, encouraging both offensive and defensive strategies.

• Spying

  Players can send spy units to scout and gather information about other players castles.

Main Tech stack:

• NestJS with multi tenancy architecture
• MongoDB with multi tenancy architecture
• E2E Unit test
• Angular 17 with RxJS only
• React Native to load webview on mobile
• Socket.IO to push real-time data

Werewolf online: September 2024 - Present

Description

This Werewolf game application is a digital tool designed to enhance the offline Werewolf experience. It streamlines game management and provides convenience for both the game master and players. Key features include:

Features:

• Create Room:The room creator automatically becomes the game master.
• Add Player:Players can join rooms by entering the room name (and password, if applicable).
• Role Assignment:The game master can assign roles (e.g., Werewolf, Villager, Seer, Hunter) to each player.
• Game Master Support:Provides an intuitive interface for game masters to track the game progress.

Main Tech stack

• NestJS
• Postgresql
• GraphQL Apollo Server and Apollo client
• Real-time update with Socket.io
• Angular 17 with RxJS only

Crops management: May 2024

Description

Crop Management is a web app designed for home gardeners. Easily track what you've planted, when you planted it, and when it's ready to harvest. Never forget what's growing in your mini garden again

Features

• Create block (Each block have multiple slot to plant crop)
• Create type of crop (Each type of crop will have estimate time to harvest)
• Place the crop to the slot of the block, when the crop placed, it start countdown to harvest day
• Manually harvest soon
• Switch place of crop

Main Tech stack:

• NestJS
• MongoDB
• Angular 17 with RxJS only