Freelancer Leonid S. (java, PHP) ≡ leo

Freelancers

Information Portfolio 10 Reviews 11 Activity

Leonid S.
Chernigov, Ukraine
11 0
Available for hire

Projects 11
Rating 5.0
Rating 2 413

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Last project: 6 months back
Bids in the last two weeks: 4
Collaboration with clients: 7
Last visit: 8 hours 59 minutes ago

web developer full stack web-developer React Redux Web-fullstack MySQL / PostgreSQL React/TypeScript Fullstack developer PHP

0 129

Online museum

PHP

Online museum for houses with wooden architecture. Technologies: Laravel, React, Mysql, Redux, ts Creating a personal content management system. -- integration with OpenStreeetMap. -- API system. -- development of a content management system

0 164

Online game store

PHP

Online game store for the sale of game currencies for games. Creation of a personal CRM system for content management and resource administration. - - integration with payment systems. -- api system -- development of a personal settlement…

0 0

Harvy Market - marketplace for farm products

Web Programming

Harvy Market — a modern marketplace that connects Ukrainian farmers, artisans, and local producers with buyers. The platform provides a convenient tool for selling natural products, managing goods, accepting online payments, and facilitating…

0 1

Elariaworld - platform for children's gifts

Web Programming

The project was implemented using the modern technology stack of React and Laravel, which ensures high performance, scalability, and reliability of the system's operation. Main functionality: - interactive quests for children - video generation using…

0 0

Sales management system for car parts

PHP

A system for managing orders for sales of car parts. Creation of a personal CRM system for content management and resource administration. Laravel, React, Socket, Pusher, MySQL, Redux

0 382

HTTPS://shadowdelight.org/

PHP

Backend Developer: PHP, Mysql, jQuery, Phalcon, HTML, CSS

0 315

The Internet Store of Boilers

PHP

The Internet Store of Boilers Backend Developer: Php, Mysql, jQuery, Phalcon

0 292

Online Kids Store

PHP

The online kids store. Backend Developer: Php, Mysql, jQuery, payment api, Phalcon

0 228

Online museum of Chernihiv's wooden architecture!

PHP

Online museum of Chernihiv's wooden architecture! Backend Developer: Php, Mysql, jQuery, Phalcon

0 0

The assembly. Laboratory work

Desktop Apps

Create 5 programs for laboratory works on assembler.

Improvements to the Statistics Analysis Application

Personal 268 USD

Everything on time, work completed according to the technical specification.

5.0

Leonid S.

23 December 2025

15 December 2021

Total projects:

11

Successful projects 100% 0 arbitrations

Average rating:

Latest proposals 10

Project	Budget	Proposal	Deadline	Added
A modern online store needs to be developed.	Not specified	559 USD	20 days	16 Jul
Development of the ENGoose platform (website) with ESL materials, subscription, and personal account.	Not specified	559 USD	20 days	15 Jul
Development of an online store for auto parts on Laravel + integration with TecDoc	4470 USD	1118 USD	25 days	15 Jul
Development of a proprietary SaaS system for automating coffee shops - similar to Poster POS	603 USD	603 USD	30 days	14 Jul
Improvements to the Statistics Analysis Application	268 USD	268 USD	7 days	10 Dec 2025
It is necessary to create a personal account for users and an admin panel for managing the website.	22 USD	22 USD	1 day	17 Nov 2025
Module for the website! Online calculator for spring calculation for the manufacturer's website	894 USD	894 USD	35 days	17 Nov 2025
Web application for statistics via API	335 USD	335 USD	20 days	17 Nov 2025
Individual lessons on website development	20 USD	16 USD	1 day	16 Nov 2025
A Senior Backend developer is needed to build a Smart Mobility server (REST + WebSocket, real-time rides).	25 USD	2500 USD	30 days	16 Nov 2025

Потрібно розробити сучасний інтернет-магазин

Status Open for proposals

Type Public project

Budget Not specified

Proposal 559 USD

Deadline 20 days

Added 16 July

Розробка платформи (сайту) ENGoose з ESL-матеріалами, підпискою та особистим кабінетом

Status Open for proposals

Type Public project

Budget Not specified

Proposal 559 USD

Deadline 20 days

Added 15 July

Розробка інтернет-магазину автозапчастин на Laravel + інтеграція TecDoc

Status Open for proposals

Type Public project

Budget 4470 USD

Proposal 1118 USD

Deadline 25 days

Added 15 July

Розробка власної SaaS-системи для автоматизації кав’ярень - аналог Poster POS

Status Open for proposals

Type Public project

Budget 603 USD

Proposal 603 USD

Deadline 30 days

Added 14 July

Дороботки застосунку Аналізу статистики

Status Project complete

Type Personal project

Budget 268 USD

Proposal 268 USD

Deadline 7 days

Added 10 December 2025

Нужно создать личный кабинет для пользователей и админ-панель для управления сайтом.

Status Project expired

Type Public project

Budget 22 USD

Proposal 22 USD

Deadline 1 day

Added 17 November 2025

Модуль на сайт! Онлайн-калькулятор разрахунка пружин на сайт виробника

Status Closed without completion

Type Public project

Budget 894 USD

Proposal 894 USD

Deadline 35 days

Added 17 November 2025

Вебзастосунок по статистиці через API

Status Project complete

Type Public project

Budget 335 USD

Proposal 335 USD

Deadline 20 days

Added 17 November 2025

Індивідуальні уроки з розробки сайтів

Status Project complete

Type Public project

Budget 20 USD

Proposal 16 USD

Deadline 1 day

Added 16 November 2025

Потрібен Senior Backend розробник для побудови Smart Mobility сервера (REST + WebSocket, реальні пої

Status Project complete

Type Public project

Budget 25 USD

Proposal 2500 USD

Deadline 30 days

Added 16 November 2025

Leonid S.
Chernigov, Ukraine
11 0
Available for hire

Projects 11
Rating 5.0
Rating 2 413

Want to offer Leonid S. a job?

If you have an account, log in

Last project: 6 months back
Bids in the last two weeks: 4
Collaboration with clients: 7
Last visit: 8 hours 59 minutes ago

Profile

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Java

PHP

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Programming

Design & art

Services

Photo, Audio & Video

Mobile development

Portfolio Works

Client reviews

Improvements to the Statistics Analysis Application

5.0

Leonid S.

Web application for statistics via API

5.0

Leonid S.

Development of an interactive website for children's online greetings

5.0

Leonid S.

30-minute consultation

5.0

Leonid S.

Consultation regarding the development of the project's backend - DB and API.

5.0

Leonid S.

Project 7

5.0

Leonid S.

Laravel developer for the project

5.0

Leonid S.

Лабораторні з js

5.0

Leonid S.

Курсова робота Бази Даних

5.0

Leonid S.

Laboratories by Assembler

5.0

Leonid S.

Laboratory by Assembler

5.0

Leonid S.

Indicators

Total projects:

11

Average rating:

5.0

5.0

5.0

5.0

5.0

5.0

Activity