Serhiy Gryshchenko
Experienced Backend Developer (💎 18+ years)
Symfony Framework / Laravel Framework / PHP / Go
Location: Ukraine 🇺🇦
Hourly rate: $20-$30
Updated: December 19, 2025
Experienced Backend Developer (💎 18+ years)
Symfony Framework / Laravel Framework / PHP / Go
Location: Ukraine 🇺🇦
Hourly rate: $20-$30
Updated: December 19, 2025
I highly recommend Serhiy as a PHP Symfony developer. I had the privilege of working closely with Serhiy for five years, during which time he consistently demonstrated a solid understanding of PHP and the Symfony framework ecosystem. Serhiy's involvement in up to 10 projects showcased not only his strong framework knowledge but also his architectural skills.
Serhiy is very responsible and client oriented person. He was playing as a good team member on several projects I was managing and I've enjoyed of his involvements on everyday tasks and engineering the product.
Perfect. Very fast and high quality. Good communication.
Medical Center website with the possibility to find a doctor and service and to make an appointment.
My role on the project was Symfony Backend Developer.
My responsibilities were creating architecture, decision-making, and development.
I worked on:
◾website architecture
◾database design
◾admin panel
◾integration of a search engine
◾implementation of various system tools
◾SEO optimization
◾performance optimization
◾refactoring
◾bug fixing
◾etc
My role on the project was Symfony Backend Developer.
My responsibility was development.
I worked on:
◾APIs
◾microservices
◾bug fixing
◾etc
The logistics platform for organizing the work of a company engaged in solid waste collection.
My role on the project was Symfony Backend Developer.
My responsibilities were creating architecture, decision-making, and development.
I worked on:
◾website architecture
◾database design
◾APIs
◾admin panel
◾implementation of various system tools
◾performance optimization
◾bug fixing
◾etc
Radio station website with the possibility to listen to music online and a lot of news.
My role on the project was Symfony Backend Developer.
My responsibilities were creating architecture, decision-making, and development.
I worked on:
◾website architecture
◾database design
◾APIs
◾admin panel
◾integration of a search engine
◾integration of different services
◾implementation of various system tools
◾SEO optimization
◾performance optimization
◾deep refactoring
◾bug fixing
◾etc
Radio station website with the possibility to listen to music online and a lot of news.
My role on the project was Symfony Backend Developer.
My responsibilities were creating architecture, decision-making, and development.
I worked on:
◾website architecture
◾database design
◾APIs
◾admin panel
◾integration of a search engine
◾integration of different services
◾implementation of various system tools
◾SEO optimization
◾performance optimization
◾deep refactoring
◾bug fixing
◾etc
The unique programme for the Radio station to engage users with interactivity as well as fascinating content. This is the program that gets radio users interested and can turn new visitors into regular ones.
My role on the project was Symfony Backend Developer.
My responsibilities were creating architecture, decision-making, and development.
I worked on:
◾website architecture
◾database design
◾admin panel
◾integration of different services
◾implementation of various system tools
◾performance optimization
◾refactoring
◾bug fixing
◾etc
A job search website for employers and employees in the Czech Republic where the employers can post their vacancies and the employees - their resume. The website has rather sophisticated workflows which are customized and allow to change business logic.
My role on the project was Symfony Backend Developer.
My responsibilities were creating architecture, decision-making, and development.
I worked on:
◾website architecture
◾database design
◾admin panel
◾integration of a search engine
◾SEO optimization
◾performance optimization
◾bug fixing
◾etc
Religious portal with a lot of news.
My role on the project was Symfony Backend Developer.
My responsibilities were creating architecture, decision-making, and development.
I worked on:
◾website architecture
◾database design
◾admin panel
◾integration of a search engine
◾SEO optimization
◾performance optimization
◾refactoring
◾bug fixing
◾etc
The Second Screen application for interacting with television content. The app is used during the selection process to the Eurovision Song Contest.
My role on the project was Symfony Backend Developer.
My responsibilities were creating architecture, decision-making, and development.
I worked on:
◾website architecture
◾database design
◾APIs
◾admin panel
◾performance optimization
◾deep refactoring
◾bug fixing
◾etc
The only learning management system (LMS) that connects all the people, content, and systems that fuel education.
I worked on a subproject for converting the LMS package type.
My role on the project was Laravel Developer.
My responsibilities were creating architecture, decision-making, and development.
I worked on:
◾website architecture
◾database design
◾admin panel
◾integration of different services
◾implementation of various system tools
◾performance optimization
◾bug fixing
◾etc
Sports website with the possibility of subscription and a lot of news.
My role on the project was Symfony Backend Developer.
My responsibility was development.
I worked on:
◾APIs
◾database design
◾integration of different services
◾bug fixing
◾etc
The website with the possibility of monitoring and visualization for Public Transportation Data.
My role on the project was Ruby on Rails Developer.
My responsibilities were creating architecture, decision-making, and development.
I worked on:
◾website architecture
◾database design
◾admin panel
◾data visualization
◾implementation of various system tools
◾performance optimization
◾refactoring
◾bug fixing
◾etc
ℹ️ Sorry for the image quality - site is not accessible anymore. The image was retrieved from an internet archive.
Advertising system with the possibility to show banners, trading and exchanging of banner shows, etc.
My role on the project was Project Manager, Architec, Lead Web Developer.
My responsibilities were project management, creating architecture, team leading, decision-making, negotiation, and mediation, development.
Rotator of ads was written on PHP, and worked with load > 1000 req/sec.
I worked on:
◾website architecture
◾database design
◾admin panel
◾implementation of various system tools
◾performance optimization
◾refactoring
◾bug fixing
◾etc
ℹ️ Sorry for the image quality - site is not accessible anymore. The image was retrieved from an archive.
The site of the recreation center with the possibility of booking a room.
My role on the project was Web Developer.
My responsibilities were project managing, creating architecture, decision-making, negotiation and mediation, development.
I worked on:
◾website architecture
◾database design
◾admin panel
◾performance optimization
◾bug fixing
◾etc
