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Ji J. Senior blockchain developer

Ji J.

  • Hong Kong, SAR
  • 5 years
  • Full-time (40 hrs/week)
Ji is now available for hire Hire Ji

I have been working as a web developer for 10 years.

I am a full-stack web software engineer .I'm a professional who is easy to talk to and easy to work with. Sometimes I make jokes and people say they are funny.

Not only that, but my code is clean, robust, readable, maintainable and highly tested. Testing is the key point in developing any app that's is going to be larger than a basic ToDo list app.

I'll be happy to provide you with the best solutions tailored specifically to your business needs. It doesn't matter if you're technical or not, I can communicate the features that your business needs on all levels. I constantly improve my technical skills by following the latest news, watching screencasts, attending conferences.

Availability is the key. I'm available to work on any day of the week and if sometimes I'm not, I will be giving you a lot of notifications of that. I have worked with plenty of clients around the globe launching successful projects and have had no problems scheduling a good time that would work for both of us.

My Word:

-Impossible is a word to be found only in the dictionary of fools -I don't trust words, I trust Actions

My Goals:

-Top developer in the world

Some tools, standards and frameworks I use in my work:

-PHP , Laravel OOP MVC Design Patterns
-Smart Contract
-Hyperledger Fabric

I truly believe there is no such thing as bug free code, there is such thing as automated tests coverage. Automated tests are to ensure that features of your app do what they're intended to do. If you're an online store, imagine a situation when charging a customer would trigger a charge for the amount way bigger than it should be. Or even worse, charging wrong customer. Can you afford a bug? Definitely no, but code that is not covered by automated tests can easily be broken in such a way.

Skills and experiences

Skills and experiences

Chief Blockchain Officer

MarketOrders / June 2019 - Present

Blockchain Developer

Self-employed / October 2017 - Present

June 2018 – Jan 2019 | Core Developer & Project Manager

Developed and managed a cryptocurrency project which involved an ERC20 token called Grailium (GXM), its dedicated wallet for Windows, Mac OS, Linux and Daemon.
Involved in developing and testing an automated cryptocurrency trading platform and a decentralized exchange.
Tech stack: jQuery, HTML5, Node.js, PHP, MySQL, C++, MongoDB, C++, Linux and Solidity.

Product links:

May 2018 – September 2018 | Full Stack Developer

Developed an investment platform from scratch, where investors and entrepreneurs are able to meet online and exchange investment information.
Worked with the client to gather business requirements and translated into a technical documentation.
Tech stack: PHP (LARVEL), MySQL, jQuery and AWS
Web Link:

Growth DeFi System (Ethereum blockchain Growth token defi ecosystem) | POWERMINE

July 2020 – September 2020 | Core Developer

Developed in nodejs/reactjs/mongodb/dapp.
Token named GROWTH on ethereum blockchain
DeFi system
Web link:


Powermine DeFi System (IOST blockchain powermine token defi ecosystem) | POWERMINE

March 2020 – September 2020 | Core Developer

Developed in nodejs/reactjs/mongodb/dapp.
Token named pmine on IOST blockchain
DeFi system
Web link:


Nobookie (Sports Betting using Cryptocurrency) | Nobookie

May 2019 – Oct 2019 | Core Developer

Developed javascript framework (Vuejs for frontend, Nodejs for backend), mongodb for database.
RabbitMQ for message broker, Redis for job queue
Cryptocurrency stable coin USDC integration
Web link:

Cryptocurrency Development / January 2016 - Present

Having experiences on blockchain, Ethereum, NEO, solidity technology, I helppeople to understand blockchain and how they can use it.
Providing solutions and implementation to all people who want their ownrevolutionary&innovative cryptocurrency.

January 2017 – September 2018 | Core Developer

Developed various smart contracts using Solidity. Projects are bound by non-disclosure agreements but the focus of all of the projects are on the ERC20 token.
List of projects include an ICO project, a property transfer Dapp and a token management Dapp
Contributed to the development of World Power Production’s ICO, Token Tracker and Smart Contract development.
Web link:

Technical Blockchain Advisor

HyperionX / September 2018 - June 2019

Senior Software Engineer / December 2017 - February 2018

Working on FILLIT ICO project for the last several months with a team ofprofessionals, having great experience. Under clear&exact wireframe of theproject , creating things is just fun. Aiming to raise FILLIT to the TOP!

Educations and Certifications

Beijing University of Technology

Bachelor's degree, Computer / Information Technology Administration andManagement · (2008 - 2011)
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