Sergey Middle PHP/Blockchain Developer | Programming:

Sergey K.

Last update: 13 Jun 2018

MIDDLE

PHP/Blockchain Developer

Hi, there, my name is Serhii and I'm from Ukraine, Kiev.

I'm able to build an entire system from a scratch, both back-end and front-end, starting from a project specification in schemas and design finishing ready server application with all necessary maintenance and further upgrades.

I provide scalable and reliable code using top-notch web technologies: PHP7, MySQL, JS, CSS, HTML, Bootstrap and jQuery. I provide organized and well-documented sources with quality and performance control. Able to do fine database optimization using indexes and full-text search (MySQL/Postgresql) to scan any documents in a second.

I have different online API experience - payments, cryptocurrency and many other API's.

Also I have proven experience working with blockchain smart contracts based on Solidity.

All rates are indicative, annual rate includes 20% discount

20% discount on yearly basis

GMT West Europe

Kyiv/Ukraine

Works

‹ › ×

TECH STACK

Back End DLT

Programming Languages:

JavaScript PHP Ethereum

RDBMS:

MySQL PostgreSQL

Operating Systems:

Linux Windows Mac OSX Administration

Development Tools:

Composer

Other skills:

Solidity Blockchain

Libraries/Frameworks/Tools:

Laravel Framework Yii2 PHP Framework Web3.js

EXPERIENCE

Industry Experience

Blockchain & Cryptocurrency

Product Experience

Cryptocurrency Website, Smart contract

PORTFOLIO HIGHLIGHTS

Jan `18 – Present

9 months

CRYPTO INVESTMENT PLATFORM

Backend Developer

Salix

Salix is the modern web application for people eager to invest and make a profit from cryptocurrency including Bitcoin and Etherium. It allows you not only to put your funds on a platform but to see how its profitability and then make payouts if necessary as well. Salix Application includes: - secure account protection - referral system - crypto portfolios management - activity, volume and performance reporting and charts visualizations - crypto payment system and withdrawal

Technologies Stack:

API MySQL PHP Laravel Framework

Industry:

Blockchain & Cryptocurrency

Product:

Cryptocurrency Website

Works:

Jan `18 – Feb `18

1 month

SMART CONTRACT & WEB3 DEMO

Blockchain Developer

As most of all our Ethereum projects are under NDA we decided to create own springs smart contract and deployed it to Rinkeby network. So you may check functionality we can implement based on web3 and Ethereum smart contracts. You can play around with our smart contract, buy tokens with ether and invest in fields in Rinkeby network. Please use Metamask Chrome Extension or mist browser to interact with Web3

Technologies Stack:

Node.js Ethereum Solidity Blockchain Web3.js

Industry:

Blockchain & Cryptocurrency

Product:

Smart contract

Works:

Web & mobile development agency #265

10-50

Kyiv/Ukraine

GMT

Core Expertise

Amazon API AngularJS API AWS JavaScript Node.js PHP React.js React Native Yii Laravel Framework REST API Vue.js Smart Contracts Blockchain

Industries

Business & Productivity, Information services & Technologies, Advertising & Marketing, Social Media & Communication

We are a team of highly experienced professionals who are successfully delivering various web and mobile projects to clients all over the world. Our team is helping companies to empower business and improve KPIs to make business more profitable and successful. We also perform business analysis and consulting to find the best software solution that fits our clients’ needs.

MORE TALENT AVAILABLE AT THIS AGENCY

Yullia V.

Front-end/Mobile developer

Yullia is a skilled front-end developer with extremely great skills in ES6, React and Redux. 2+ years of experience in JS coding, strong communication and teamwork skills, ability to learn new thi...

JavaScript 2 years React.js 2 years Redux 2 years +13 JavaScript MongoDB Gulp Webpack Linux Windows Mac OSX Administration React.js React Native Redux JIRA Scrum Trello

GMT West Europe

All rates are indicative, annual rate includes 40% discount

view Profile

Updated: 19 Jun 2018

Danil Z.

Full-stack/Mobile Developer

My name is Danil and I am full-stack ReactJS/NodeJS developer and moreover I am able to develop mobile apps in React Native. I am a hard-working personality, who likes to come across challenges and...

JavaScript 2 years Node.js 2 years React.js 2 years React Native 1 year +11 JavaScript MongoDB Gulp Webpack Windows Mac OSX Administration Node.js React.js React Native Redux Heroku

GMT West Europe

All rates are indicative, annual rate includes 20% discount

view Profile

Updated: 13 Jun 2018

Vladislav G.

PHP Developer

My name is Vlad and I am PHP developer. I have more than 4 years as a software engineer. Started my career building small PHP and HTML websites. Currently, I can build entire complex web app or API...

JavaScript 2 years Node.js 2 years PHP 2 years +13 JavaScript PHP MongoDB MySQL Composer Linux Windows Mac OSX Administration Node.js Yii 2 Laravel Framework Nightwatch.js API

2 Projects completed

GMT West Europe

All rates are indicative, annual rate includes 20% discount

view Profile

Updated: 13 Jun 2018

Artem T.

Full-stack Vue/NodeJS Developer

Artem is our skilled full-stack NodejS/Vue developer. Developing mostly in NodeJS, Roman also has skills frontend development, coding with Vue framework. Artem is eager to make complex projects pr...

JavaScript 2 years Node.js 2 years Vue.js 2 years +12 JavaScript MongoDB SQL Redis Webpack Linux Windows Node.js Socket.IO Vue.js Agile Scrum

GMT West Europe

All rates are indicative, annual rate includes 20% discount

view Profile

Updated: 13 Jun 2018

Maxim A.

Skilled Frontend/Mobile Engineer

Max is talented frontend developer learning new technologies very fast and adjusting to project requirements. His first project in our company was interactive email builder based on ReactJS. Almost th...

Node.js 1 year React.js 2 years React Native 2 years Vue.js 1 year +15 JavaScript React Native MongoDB Ajax Gulp Webpack Windows macOS AngularJS Node.js React.js Bootstrap Vue.js JIRA Git

GMT West Europe

All rates are indicative, annual rate includes 20% discount

view Profile

Updated: 13 Jun 2018

Evgeny K.

PHP/Laravel Developer

Evgeny is one of our expert PHP developers. He started his career as a PHP developer and currently grown a lot in the knowledge of modern backend frameworks, such as Laravel. Also, he knows Unity3D (c...

PHP 4 years Bitrix 3 years Laravel Framework 2 years +11 PHP Unity or Unity3D MySQL SQL Ajax Linux Windows jQuery OpenCart Bitrix Laravel Framework

GMT West Europe

All rates are indicative, annual rate includes 20% discount

view Profile

Updated: 13 Jun 2018

Artem G.

Talented full-stack PHP/React Developer

Artem is one of our best full stack developers. He started his career as a PHP developer and for the last 3 years he is considered as a full-stack expert with frontend JS skills. So he can handle p...

AngularJS 2 years PHP 4 years React.js 2 years Laravel Framework 3 years +12 JavaScript PHP MongoDB MySQL Docker Linux Windows Mac OSX Administration React.js Laravel Framework Redux Git

GMT West Europe

All rates are indicative, annual rate includes 20% discount

view Profile

Updated: 13 Jun 2018

Roman K.

Skilled Full-stack PHP/Vue Developer

Roman is our skilled full-stack developer. Programming mostly in PHP and using Laravel Framework Roman also has skills in NodeJS and Vue. He always tries to handle complex tasks and doesn`t afraid...

Node.js 1 year PHP 3 years Laravel Framework 2 years Vue.js 2 years +10 JavaScript PHP MongoDB MySQL Webpack Linux Windows Express.js Laravel Framework Vue.js

GMT West Europe

All rates are indicative, annual rate includes 20% discount

view Profile

Updated: 13 Jun 2018