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Full-stack Web/Mobile, Backend Developer, with some experience in Functional Programing, Microservices, DevOps, Cloud Computing, CI, CD, architecture and implementation. I have high ambitious and professional skills for every modern projects.
Hasura is a startup company that makes developer tools that simplify and accelerate product development. Core product of Hasura is GraphQL Engine, an instant, high performance GraphQL service for any Postgres app without you having to write any backend code.
Experience:
USER was established in Singapore in 2010 with a global team from China, Japan and Vietnam - 1st company in Singapore that specializes in User Experience (UX) Design. USER provides an entire suite of services that include User Research, Interactive and Visual Design, Mobile Application and Website development, and Digital Marketing Services.
Experience:
Nexx focuses on E-wallet and Location based products as a start-up company, so I can apply and experience in many new technology stacks to new projects
Experience:
A Start-up project about Food porn review social network
Experience:
Maintained, developed Booking appointment system and partner management
Experience:
Worked as fresher and then part-time developer
Experience:
Study about How to code, Systems development life cycle, Design Patterns and System Design
Incentive award Microsoft Imagine Cup Vietnam 2011
SIMPLE BLOG BUILDER
Repository: https://github.com/hgiasac/blog-builder
Website: https://hgiasac.github.io
A simple static blog without backend. I use Markdown to write blog content, then use PureScript to parse Markdown syntax, render to HTML string with template. This blog is also mixed with static HTML posts that is complicated with external JavaScript libraries and demos.
Experience, skills and technologies:
PURESCRIPT FIREBASE ADMIN
Repository: https://github.com/hgiasac/purescript-firebase-admin
A simple PureScript binding library for Firebase Admin
Experience, skills and technologies:
PURESCRIPT MARKDOWN SMOLDER
Repository: https://github.com/hgiasac/purescript-markdown-smolder
A simple library for render HTML from Markdown Markups
Experience, skills and technologies:
1FORGE PROXY SERVICE
Repository: https://github.com/hgiasac/oneforge-proxy
A simple proxy service for getting exchange rates. It's a service that can be consumed by other internal services to get the exchange rate between a set of currencies, so they don't have to care about the specifics of third-party providers.
The proxy use free tier of the 1forge API which supports 1.000 requests per day. The service need to cache the results for a time span (90 second). It limits the quota so that the result will be up-to-date all day
Experience, skills and technologies:
CERMINE SERVICE
Repository: https://github.com/hgiasac/cermine-service
CERMINE is a Java library which smartly extracts metadata and content from PDF files containing academic publications using machine learning. This project is a REST service implementation for CERMINE written in Scala.
Experience, skills and technologies:
UPLOADER API SERVICE
Repository: https://github.com/hgiasac/uploader-demo
An experiment uploader service writing in Haskell and Continuous Deployment with NixOps
Experience, skills and technologies:
KOA 2 JOI VALIDATOR
Repository: https://github.com/hgiasac/koa2-joi-validator
A simple validator for koa 2 application, inspired from koa-joi-validator, with Typescript supported
Experience, skills and technologies:
SERVERLESS FRAMEWORK
Repository: https://github.com/serverless/serverless
Implement shared API Gateway feature that can reference many services into one API Gateway.
Custom Authorizer for API Gateway
PURESCRIPT SMOLDER
Repository: https://github.com/bodil/purescript-smolder
A simple combinator library for generating HTML in PureScript, heavily inspired by Haskell's BlazeHtml. I make a fix for safe render HTML string with W3C specs
GRAFTER HTTP4S SCALA TEMPLATE
Repository: https://github.com/hgiasac/grafter-http4s.g8
Update template for each HTTP4s version
GraphQL Engine
March 2019 - Now
Website: https://github.com/hasura/graphql-engine
Role: Haskell Developer
GraphQL Engine is an instant, high performance GraphQL service for any Postgres app without you having to write any backend code.
My Responsibility:
Experience, skills and technologies:
DOCTOR ONE WORLD
October 2018 - Now
Website: https://doctorworld.co
Role: Full-stack Web Developer
Doctor One World (WOW) is an online health care service online video consultation. Customer can request health check online, schedule appointments and medicine deliveries. DOW also access and keep track of customer's clinic visits, medication, laboratory reports and physical statistics in one place.
My Responsibility:
Experience, skills and technologies:
ORCHXTRA
April 2018 - April 2019
Website:
http://dev-orchxtra.s3-website-ap-northeast-1.amazonaws.com/
Username: toan@user.com.sg
Password: 12345678
Role: Full-stack Web Developer
ORCHXTRA is a project management application for Researchers from organization and University. The project is built as a Sass business. Users can manage their staff team, projects, research articles, reports, contracts, budgets, and automatically export a landing page for the project
My Responsibility:
Experience, skills and technologies:
ST PARKING
February 2018 - June 2018
Website:
http://stcarpark-dev.s3-website-ap-northeast-1.amazonaws.com
Username: +8401227792025
Password: 12345678
Role: Web Developer
ST Parking is an application that is used to pay for parking using mobile devices at all coupon parking car parks
My Responsibility and Experience:
CARDLINE
August 2017 -January 2018
Role: Full-stack Web Developer
CardLine is a social network application for business communication and social interaction. It perfectly fit for sales people, entrepreneurs, business developers and marketing specialists. Users is able to manage their own profile and friend contacts easily, chat with friends, and find new potential business patterns.
My Responsibility:
Experience, skills and technologies:
DTAXI
Jun 2016 –Jun 2017
Website:
https://play.google.com/store/apps/details?id=com.nex.dtaxicustomer&hl=en
https://itunes.apple.com/us/app/dtaxi/id1168224995?mt=8
Role: Team Lead – Full Stack Web Developer
- DTaxi is a taxi booking system which implement the on-demand service like Uber , DTaxi is a service for Vietnam market, customer can easily book a car by several simple steps, driver will receive the trip quickly in real time mode.
– DTaxi also provide a portal name “call-center” which will support receive the trip request via phone and push the trip booking to driver application.
– Dtaxi system has the scalability and stability to serve thousand of car requests at a same time.
– DTaxi system is not only friendly for admin to operate but it also flexible to adjust or change the business model every time if needed.
Responsibility and experience:
Skils and technologies:
GVN
Aug 2016 – Dec 2017
Website:
https://itunes.apple.com/us/app/giup-viec-nha/id1163463474?mt=8
Role: Backend Developer
GVN is a house cleaning service which implement the on-demand service like Uber, focused on Vietnam market. Customer can easily book a service by several simple steps on mobile app, after providing some informations and book, cleaner will receive the notification about the booking and accept the price with total working hour, cleaner can contact the customer to start the service.
GVN system has the scalability and stability to serve thousand of car requests at a same time. It is so much easy to add other service not only the cleaning service for example: home electric, home cooking, home teaching ....
GVN system is not only friendly for admin to operate but it also flexible to adjust or change the business model every time if needed.
My Responsibility and experience:
Skils and technologies:
NEXEX
May 2016 – Jun 2016
Website:
https://itunes.apple.com/us/app/nexex-shop/id1132073282?mt=8
https://itunes.apple.com/us/app/nexex-shipper/id1132095099?mt=8
Role: Backend Developer
NexExpress is an open Cash on delivery (COD), location based system for shipping. A shop can create a shipment and a freelance shipper can pick this shipment for delivery. They can work and support together, create their own CoD community
My Responsibility and experience:
Skils and technologies:
WEBMONEY VIETNAM
Oct 2015 – Jun 2016
Website: https://webmoney.com.vn/
Role:Full-stack Web and Backend Developer
WebMoney is an e-wallet and payment gateway for WebMoney Vietnamese users, there are all the basic features for an e-wallet that user can see balance, deposit money to wallet, withdraw cash , transfer money between 2 wallets and do payments for others daily services. This is one of most useful solutions for personal financial purpose.
My Responsibility and experience
Skils and technologies:
65DOCTOR
Dec 2013 – Dec 2014
Website: http://65doctor.com/
Role: Full-stack Web Developer
65doctor is a web platform which focuses on finding and book a Doctor appointment. The patient can search doctors by name, specialty, or symptom, select a convenient time & date, book appointment and get instant confirmation.
My Responsibility and experience
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