Kostiantyn

From Ukraine (GMT+3)

Full-stack Web DeveloperSenior

Hire developer

19 years of commercial experience

Advertising

Automotive

Business intelligence

Cryptocurrency

Data analytics

Gambling

Job and career services

Recruiting

Dev tools

Lemon.io stats

Kostiantyn is looking for the first project with us, but we have verified and summarised the previous experience for you

Skills and seniority verified on Oct 12, 2021

Kostiantyn – Laravel, React, PHP

Kostiantyn is a highly experienced PHP developer with over 13 years of experience, starting from PHP 4 to the latest 7.4, and is knowledgeable about PHP 8. He has worked on gaming platforms, a job-hunting marketplace, and a multi-cloud platform. He is passionate about using updated language features.

Main technologies

Laravel

4.5 years

React

4 years

PHP

16 years

Additional skills

Git

Docker

PostgreSQL

Nginx

Ionic

Redis

Node.js

SQL

HTML

Tailwind CSS

Linux

Angular JS

AWS

REST API

Python

Symfony

CSS

Ready to start

ASAP

Direct hire

Potentially possible

Experience Highlights

Senior Full-Stack Developer

Dec 2021 - Jun 20225 months

Project Overview

The Ultimate Data ToolKit for Data Collection. The proxy provider for web scraping and monitoring.

Skeleton

Responsibilities:

Implemented new features;
Optimized the slow code and queries where possible;
Cleaned up the codebase;
Removed useless dependencies;
Designed several new Rest-API;
Revised and improved security.

Project Tech stack:

PHP

Laravel

Docker

MySQL

openresty

Full-Stack Developer / Architect / DevOps

Mar 2019 - Dec 20201 year 9 months

Project Overview

The project is a legal online poker.

Skeleton

Responsibilities:

Communicated with the client to discuss requirements and provided estimates;
Created the templates according to the given design;
Customized template handling for marketing, copywriters, and SEO;
Managed GTM;
Designed the database structure to manage players and protect from fraud using phone/email validation;
Integrated with the game server using SOAP;
Added integration with the services to send/validate SMS/emails;
Created required plugins and jobs for the project;
Optimized performance on both front-end and backend;
Deployed to the cloud using custom images.

Project Tech stack:

PHP 7.4

OctoberCMS

Laravel

Redis

Openresty

Docker

Jelastic

PostgreSQL

Full-Stack Developer / Team Lead

Nov 2016 - Nov 20182 years

Project Overview

A marketplace for customers and employees to find a matching person/job, sign contracts, manage and report billable hours and send/receive payments using cryptocurrency.

Skeleton

Responsibilities:

Communicated with the client to negotiate requirements;
Provided estimates and reported the progress;
Managed a team of 3 developers and 1 QA;
Selected tech stack;
Researched and designed the architecture;
Developed the components;
Optimized performance;
Developed features: API and middlewares, JWT auth, custom components, live updates using websocket (Pusher), and multilingual support without page reloading.

Project Tech stack:

PHP 7.1

Laravel 5.5

React

PostgreSQL

Redis

Node.js

Nginx

Docker

Support Team Lead

Sep 2013 - May 20151 year 8 months

Project Overview

A cloud platform that facilitates developer's life while deploying.

Skeleton

Responsibilities:

Managed and taught a team of 3 support engineers;
Switched to 24/7 schedule;
Classified and reported major issues if they cannot be addressed by the support team;
Arranged training for new clients.

Project Tech stack:

Linux

Openvz

Networks

Keep in mind, the experience summary might exclude non-relevant projects

Education

1997

Automation and Management

not graduated