Freelancer Kostyantin A. (PHP, web Programming) ≡ constantn

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Information Portfolio 10 Reviews 1 Activity

Kostyantin A.
Chernovtsy, Ukraine
1 0
Available for hire

Projects 1
Rating -
Rating 471

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Last project: 2 years back
Collaboration with clients: 1
Last visit: 11 hours 4 minutes ago

web developer PostgreeSQL Custom Web Solutions javascript PHP Vue.js laravel MySQL

0 75

Internal Systems Website

Website Development

Development of a website from scratch as a single-page application (SPA) on Vue using Tailwind for building the interface. Designing the structure of the frontend, components, and navigation. Implementation of a lightweight PHP OOP backend for…

0 131

Backend support and development of a CRM platform

PHP

Participated in the development of a production CRM system at the stage of preparing the product for scaling and launch. The main focus was on refactoring and stabilizing the existing backend part, organizing business logic, and increasing code…

0 195

Click to Sign Module for Custom CRM System

Web Programming

Full development of the electronic document signing module "Click to Sign" from scratch for a custom-built CRM system. Design and implementation of the module architecture. Creation of the database structure and its integration into the existing…

0 119

Module for generating project documents for a custom CRM system

Web Programming

A module for creating project documentation based on PDF templates has been developed using structured data entry forms. The system allows for the generation of documents with automatic filling of information from the CRM (contacts, addresses,…

0 128

File management module for a custom CRM system

Web Programming

Development of a module for storing and distributing files with folder logic similar to a file system. Implemented uploading, organization, and sharing of files and directories through public links, as well as linking documents to CRM entities (…

0 304

Automated cryptocurrency futures trading platform

Bot Development

Development of an automatic trading system based on the Binance API with support for multiple trading strategies and flexible configuration of parameters. The platform provided simultaneous execution of several strategies with the processing of a…

0 302

Service and billing control panel for SMS service

PHP

Participation in the development and further improvement of the internal service management system, billing, and transaction accounting. Working with the backend part of the existing system: supporting functionality, stabilizing operations, and…

0 296

Work on the backend of a custom CMS for a blog platform

PHP

Optimization and refactoring of the existing PHP code have been carried out, improving the structure of the backend logic and the stability of the system's operation. Enhancements to the content management functionality and the performance of the…

0 252

Refactoring the backend of a custom CMS for an online store

PHP

Refactoring and modernization of the PHP backend of a custom online store engine. Optimization of legacy code has been carried out by decomposing large procedural files into functional modules by purpose. Database restructuring has been performed:…

0 225

Updating and optimizing the backend of a custom PHP online store

PHP

The procedural code has been reorganized by separating the logic into distinct functional components. Improvements have been made to the database structure: normalization of tables, implementation of many-to-many relationships, addition of indexes,…

Total projects:

1

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Average rating:

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1 review

5.0

Professionalism

5.0

Quality

5.0

Price

5.0

Contactability

5.0

Deadlines

Latest proposals 10

Project	Budget	Proposal	Deadline	Added
Conversion of an html site into a fully functional website with an admin panel	101 USD	225 USD	14 days	26 Apr
A simple web application for online booking at a barbershop needs to be developed.	227 USD	225 USD	10 days	18 Apr
Update the website design (laravel+node.js)	225 USD	225 USD	7 days	17 Apr
Need a layout designer who knows SEO	45 USD	45 USD	3 days	7 Apr
Full Stack dev	Not specified	175 USD	7 days	25 Mar
Organize the styles of the website (single style.css)	90 USD	90 USD	3 days	25 Mar
Development of a CRM system for a real estate agency	607 USD	607 USD	30 days	14 Mar
Freelancer for finding contacts on LinkedIn (LinkedIn Research / Lead Generation)	16 USD	25 USD	3 days	9 Mar
Search for companies that specialize in roof repairs (USA, Australia, UK) and their email addresses.	112 USD	45 USD	3 days	8 Mar
Development of a website with an admin panel (CRM) based on a ready design	Not specified	250 USD	60 days	5 Mar

Перетворення html сайту в повноцінний веб-сайт з адмінкою

Status Project complete

Type Public project

Budget 101 USD

Proposal 225 USD

Deadline 14 days

Added 26 April

Потрібно розробити простий веб-додаток для онлайн-бронювання в барбершоп.

Status Project expired

Type Public project

Budget 227 USD

Proposal 225 USD

Deadline 10 days

Added 18 April

Оновити дизайн сайту (laravel+node.js)

Status Project expired

Type Public project

Budget 225 USD

Proposal 225 USD

Deadline 7 days

Added 17 April

Нужен верстальщик знающий SEO

Status Project expired

Type Public project

Budget 45 USD

Proposal 45 USD

Deadline 3 days

Added 7 April

Full Stack dev

Status Project expired

Type Public project

Budget Not specified

Proposal 175 USD

Deadline 7 days

Added 25 March

Навести порядок в стилях сайта (единый style.css)

Status Project expired

Type Public project

Budget 90 USD

Proposal 90 USD

Deadline 3 days

Added 25 March

Разработка CRM-системы для агентства недвижимости

Status Closed without completion

Type Public project

Budget 607 USD

Proposal 607 USD

Deadline 30 days

Added 14 March

Фрілансер для пошуку контактів у LinkedIn (LinkedIn Research / Lead Generation)

Status Project complete

Type Public project

Budget 16 USD

Proposal 25 USD

Deadline 3 days

Added 9 March

Пошук компаній, які займаються ремонтом дахів (USA, Australia, UK), та їх email-адрес

Status Project complete

Type Public project

Budget 112 USD

Proposal 45 USD

Deadline 3 days

Added 8 March

Розробка сайту з адмін-панеллю (CRM) по готовому дизайну

Status Project expired

Type Public project

Budget Not specified

Proposal 250 USD

Deadline 60 days

Added 5 March

Kostyantin A.
Chernovtsy, Ukraine
1 0
Available for hire

Projects 1
Rating -
Rating 471

Want to offer Kostyantin A. a job?

If you have an account, log in

Last project: 2 years back
Collaboration with clients: 1
Last visit: 11 hours 4 minutes ago

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Working with a web site on pure php

5.0

Kostyantin A.

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Total projects:

1

Average rating:

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