Валерий

Valerii Manchenko
Full Stack JS Solidity

Summary of Skills:

● Strong development code
● Experience in developing an application from scratch to production
● Experience in choosing technologies for specific application tasks
● Programming Node.js, ReactJS, Solidity smart contracts
● Building asynchronous applications using async/await
● Expertise in networking protocols and hardware operating systems
● Excellent knowledge of developing web services and relational databases
● Experience in common third-party APIs
● Good in managing time and organizing tasks
● Career oriented, hard working and ability to handle multiple tasks
● Experience in writing automated tests
● Quick learner and ability to learn new concepts

Technical Skills:

● Extensive knowledge of Solidity, JavaScript, React.js, Ethers.js, Node.js, Truffle,
Geth, DeFi
● In-depth knowledge of programming like Web logic, business logic, development
of e-commerce systems, AWS service
● Use libraries Lodash, Axios, Moment, JOI, Firebase SDK, ESLint etc .
● Database: MySql, MongoDB, PostgreSQL
● ORM Sequelize, ODM Mongoose
● System control version Git
● Payment system api: LIQPAY, Paypal, Qiwi, Coinbase, etc. the development of the
internal payment system
● Experience building Docker containers, automatization deploy.
● Time-tracking : Redmine, Jira
● Operating systems Linux, Windows, MacOs

Education:

Kharkov State Automobile and Highway University
Certification and Honors:

Certification Course in PHP Programming

Master Class, Kharkov

2012

Projects:
Blocksport AG

Jun 2022 - Jan 2023

● Development Smart contracts NFT, ERC20, ERC721, ERC1155, Marketplace,
Staking
● Development components admin panel and NFT platform with ReactJS
● Develop blockchain listener, websocket events NodeJs
● Develop modules, microservices, api points, NodeJs platform
● Database PostgreSQL, Sequelize
● Automation tests contracts

AVTO

Jun 2021 - Jan 2022

● Development Smart contracts exchange DEFI
● Development site with ReactJS
● Development nodeJs api parser blockchain
● Database PostgreSQL, Sequelize
● Internal audit smart contracts
● Automation tests + Truffle + Mocha + Chai, Hardhat

Erudito

Jun 2020 - Jun 2021

● Development RestAPI on Node.JS for Customer Relationship Management
● Development site Customer Relationship Management with ReactJS
● Development RestAPI for Mobile Api
● Database PostgreSQL, (Object Relational Mapper) Sequelize
● Docker, GitLab CI/CD
● Firebase Push notification, Firebase Realtime Database
● Development Viber bot
● DigitalOcean API, Volumes, Spaces, Kubernetes
MyRas.fr France

September 2019 - Jun 2020

● Development RestAPI, NodeJS , PHP
● Development Microservices with Node.js
● Development Customer Relationship Management with AngularJS
● PostgreSQL
● Highload system, Docker Engine API,
● Amazon Web Services, AWS

FULL STACK DEVELOPER

IPTeamCloud.com Kiev

October 2018 - 2019

● Development RestAPI - nodeJS, MongoDB
● Development of a user account ReactJS
● Macroscop system CCTV implementation
● Development WHMCS-CRM PHP
● Google maps implementation

FULL STACK DEVELOPER

AIVIA, Nous Platform, NOUS TOKEN

November 2017 - 2018 (October)

● Development RestAPI on node.js
● Development cron application, parser, snapshot service, etc. from NodeJS
● Development site on ReactJS
● Writing contracts on Solidity
● Unit tests Mocha JS, Truffle, Ganashi
● Development of a complex system

PHP and NodeJs Programmer

InWeb24, Grosl, OneTravelTeam, MyDoctorCare.com, InWebGlobal, afisha.nyc etc.

November 2014 - 2017

● Modifying and extending open source applications like WHMCS addons
modules
● Developing and creating PHP MySQL applications as per the specifications
● Development admin website on the rope Angular, Sails Rest API, MangoDb
● Performing the responsibilities of implementing and hosting of systems on a
web server
 ● Coordinating with team members in developing database structure
● Testing and analyzing programming projects and reporting the same to the
programming manager
● Development of an automated trading system
● The development of network marketing systems of trees
● Writing documentation for modules designed and REST api

PHP Programmer

Antarasoft, Kharkov

2013 - 2014

● Handled PHP backend development for dynamic database driven website
● Development of plugins for wordpress and support existing projects.
● Troubleshot problems with PHP and other web technologies
● Designed, developed, coded, tested and debugged system requirements for the
purpose of conversions and development projects
● Performed other related tasks under the instructions of a senior PHP
programmer

System administrator, WEB Developer

Teploavtomat, Kharkov

2012 - 2013

● organizing the smooth running PC
● Internet network installation
● Server support
● Support site teploautomat.com
● Layout of the new site (partners of the company)
● Development site Filok,

Knowledge of languages:

Intermedia - red and speak simple prathes and