Steven, Blockchain Software Engineer

Experience

Blockchain Developer

2020 – Present Self-employer
Responsibilities:

• Bridge Smart Contract which is for transferring tokens across networks;
• NFT Dapps such as madlab, Art Basel, Fateful Youth;
• eWallet App and GSM e-commerce product;
• Smart contracts in complex Defi and DEX structure;
• Blockchain networks including Ethereum, BSC, Polygon, and Solana;
• Developing smart contracts in Rust;
• Deploy and work on various kinds of tokens - ERC20, ERC721, ERC721A, ERC1155;
• Cross-chain smart contracts using LayerZero;
• NFT market smart contract for auction and offer with lazy minting;
• Proxy smart contract;
• NFT marketplace Dapp using Venly;

Technologies: Node.js, Ethereum, Binance Smart Chain, Web3, Solidity, NFT, Smart Contract, Truffle, Hardhat

Backend Engineer, FTI Ticketshop GbmH

2020 - 2020
Responsibilities:

• The intention of this project was to convert the old PHP back end into Golang (version 12.x)
• The backend could access the Redbox RestAPI and the airQuest neocore API to retrieve
  information and to post tasks to the ticketing application (refund, ticketing, document
  creation, etc.)
• After building a new back end, old procedures were replaced with a booking-centered, guided, interactive, and intelligent platform in a modern design to reduce the human-to-human interactions and allow an automatic, or semi-automatic process based on valid formatted input, with instant feedback to the customer.

Technologies: Golang, Postgres, React.js, AWS S3, HTML5

Fullstack Developer, Foodcare

2019 - 2020
Responsibilities:

• Initiate projects, review, approve project plans and approve delivery of projects.
• Using GO, developed a microservice for reading a large volume of data(millions) from PostgreSQL
  database.
• Handling project management, system integration, debugging, and troubleshooting of the application.
• Containerized applications using Docker: Created docker files, building docker images for microservices to run on the Kubernetes platform.
• Extending post-implementation, application maintenance, and technical support to the client.
• Ensuring adherence to quality norms throughout the development & implementation process.
• Creating and sustaining a dynamic environment that fosters development opportunities and motivates high performance.
• Developing initiatives for improved productivity, building capability, and quality enhancement.
• Ensure timely technical support to customer complaints.

Technologies: Golang, Postgres, Angular 7, AWS S3

Fullstack Developer, Surprise. Hr

2018 – 2019
Responsibilities:

• Platform for employee celebration to make your employees gain meaningful workforce insight or •
  reinforce the values and principles.
• Rich and varied gameplay to make your employees joyfully and change up the games to keep them interested
• Gift card and reward system using smart budget distribution algorithm to make sure “wins” are effectively distributed across your company and future “win” take into account what happened previously.
• Provide cooperative and powerful restful APIs.
• Payment system
• TDD approach

Technologies: Rails, Postgres, Javascript, AWS S3, Gyft Card, Stripe, Paypal

Frontend leader, NewBrands.fr, SAS

2016 - 2017
Responsibilities:

• Developed the UI interface using JavaScript, jQuery, CSS3, and HTML5.
• Used JavaScript MEAN stack: MongoDB, Express JS, and Node.js to build e-commerce applications.
• Used Bootstrap, RESTful, AWS, Vue JS, React JS, and MVC on the front-end for registering a new
  customer and configured it to connect to the database using Hibernate.
• Worked with D3.js in various levels of projects which brings data to life using HTML, SVG, and CSS.
• Created Menus and Drawer components by using TypeScript.
• Build data visualizations to monitor the file server load, web server speeds, and data processing using jQuery, and MySQL.
• Used GIT version control system to pull, push, commit and raise pull requests from developed code.
• Developed a fully functional prototype application using JavaScript (jQuery and Backbone.js) and
  Bootstrap, connecting to a RESTful server on a different domain. Implemented mock services in Node.js with the help of modules using ExpressJS.
• Handled all aspects of the web applications including maintaining, testing, debugging, and deploying.

Technologies: Node.js, Typescript, React.js, AWS, MongoDB, TDD

Software Engineer, Porcheson Technical Company Ltd

2012 – 2015
Responsibilities:

• Involved in implementation of procedures for gathering the requirements from clients for solution
  demonstrations.
• Developed new RESTful API services that work as a middleware between our application and third-party APIs that we will use using Golang.
• Using GO, developed a microservice for reading a large volume of data(millions) from the PostgreSQL database.
• Experience writing data APIs and multi-server applications to meet product needs using Golang.
• Experience in writing the HTTP RESTful Web services and SOAP API's in Golang.
• Designed configurable REST APIs on-demand using Go. Worked on numerous go frameworks like echo, gin, revel, and beego.
• Integrated Jenkins to git where the build triggers automatically when we push a pull request for CI/CD.
• Worked on CI/CD tool Jenkins to automate the build process from the version control tool into the testing and production environment.
• Experienced in using Go technologies on UNIX and Linux platforms.
• Good understanding of Design Patterns, Multithreading and GO containers. Well-versed in using Channels and goroutines.
• Containerized applications using Docker: Created docker files, building docker images for microservices to run on the Kubernetes platform.
• Created docker image for microservices files to orchestrate applications using Kubernetes.
• Proficiency in multiple databases like MongoDB, Cassandra, and MySQL.
• Produced and Consumed Restful Web Services using Postman Rest Client, Swagger UI, to interact with different applications from third-party tools.
• Worked with Business users and stakeholders for gathering business requirements and Converting the Business Requirements into User Stories using JIRA.

Technologies: MySQL, JavaScript, Angular, React.js, GraphQL, Go

Education

Beijing Science and Technology University, Beijing, China.

Bachelor’s Degree in Computer Science