03/31/2026 updated

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Senior Software Developer

Warsaw, Poland
Only remote
Candidate of Technical Sciences (Ph.D.)
Warsaw, Poland
Only remote
Candidate of Technical Sciences (Ph.D.)

Profile attachments

Engineer profile Andrey S. 02.2026 .pdf

About me

I’m a PHP backend developer with 8+ years of experience in Laravel and Symfony. I build scalable systems, APIs, and optimize performance. Skilled in MySQL, PostgreSQL, Docker. I write clean, maintainable code and deliver reliable results for both short-term and long-term projects.

ASP.NETJavaScriptPHPApache HTTP ServerHTML5Bootstrap (Software)Cascading Style Sheets (CSS)Computer ProgrammingDatabasesContent ManagementProgramming ToolsGitHubUser Interface DesignWeb ServersJSONLaravelPostgreSQLMongoDBMySQLPHP DevelopmentJetBrains PhpStormResponsive Web DesignServer AdministrationSoftware DeploymentSymfonyWeb ApplicationsWordPressWorkflowsBackendGitSyntactically Awesome Style Sheets (SASS)Front End Software DevelopmentApi DesignRestful ApiSoftware Version ControlDatabase Administration
PHP Development
Extensive 9+ years experience in PHP programming with expertise in modern frameworks and backend development

Database Management
Over 4+ years practical experience in MySQL with additional knowledge in PostgreSQL, MongoDB and other database systems

Framework Development
Solid experience with Symfony and Laravel frameworks for building scalable web applications

JavaScript Development
5 years of advanced JavaScript programming including modern ES6+ features and client-side development

Frontend Technologies
Advanced skills in CSS/HTML5, SASS, Bootstrap for responsive web design and user interface development

Version Control Systems
Advanced experience with Git and GitHub for code management and collaborative development workflows

Web Server Management
Expert knowledge in Apache server configuration and ASP.Net application deployment

Content Management Systems
Advanced experience with WordPress, OpenCart, SantaFox, and Simpla CMS platforms

Development Tools
Advanced proficiency in PhpStorm IDE and various development environments for efficient coding

API Development
Experience in REST API development, JSON handling, and third-party service integrations

Languages

EnglishFluent

Project history

Software Developer

Designed to help brands turn data into customers. Uses AI to build, personalize, and continuously optimize landing pages and conversion funnels tailored to each visitor persona.
Software Developer
Main roles:
Client and server-side development;
New features development;
integration with PostHog user analytics;
Figma layout and UX design;
Manual tests in Browserstack;
Integration with Shopify;
Bug fixing.
Programming language(s): PHP 8.2, JavaScript
Database: MySQL 8.0
Frameworks & libraries: JQuery, Docker
Technologies: REST API, Ajax, Flex, Postman, HTML5, CSS, export to XLSX and CSV, JSON, PhpStorm, Cursor, Copilot, Sentry bug log, servers on cloud.digitalocean.com, GPT-5 API prompts for text content generation.
Operation systems for development: Linux, Windows, MacOS
Version control, code delivery: GIT, GitHub, SSH
Task management: Google docs, JIRA
Communication: daily chats and calls.

Software Developer

Multi stores E-commerce project migration from WordPress to Laravel with modern UI framework implementation and automated testing.
Project goal to migrate the existing portal from WordPress to Laravel using Aimeos e-commerce package, with a change in the user interface (UI). It is necessary to make a common customer base for all sites and make an interface for them in a common style. The service is provided for clients all over the world.
The portal should also implement the following functions:
White Label Capability;
Role-based Access;
Modern UI Framework;
Automated Code Testing;
UI Tests.
Software Developer
Primary roles:
Collaborate with product manager to gather requirements;
Participating in software development meetings;
Effort’s estimation and technologies stack definition;
New features development;
Bug fixing;
Delivery and deployment.
Programming language(s): PHP 8.2, JavaScript, SQL, HTML, CSS
Database: PostgreSQL
Frameworks & libraries: Laravel, Aimeos, React.js, jQuery, SCSS
Tools: Docker, GIT
Operation systems for development: Ubuntu, Windows

Backend Software Developer

Tips acquiring system development for organizing tip collection and distribution with mobile app integration and payment processing.
Platform for organizing the collection of tips from customers and their distribution between employees and administrators (automatic tip distribution). Daily tip cash out. Customization for each venue. Mobile app for waiters (IOS/Android). Integration with Apple/Google Pay, credit cards, Visa CyberSource.
Backend Software Developer (part time)
Requirements gathering;
New features development;
Bug fixing;
Delivery and deployment on development and production servers (API, backend and frontend)
PHP 8.2, Laravel 9.5, PostgreSQL;
API servers’ interaction;
Laravel Task Scheduling, Cron, Supervisor, Jobs, logs;
Version control, code delivery: GIT, Bitbucket, SSH;
Task management: Google docs;
Communication: daily chats and calls.

Software Developer

Medical Marketing Platform development for client-physician-laboratory interaction with API webhooks and OAuth workflow implementation

Software Developer

Multi stores E-commerce platform development for Europe's largest online offers platform with over 100,000 daily visitors.
The project goal to assist in development and of Europe's largest online offers platform with more than 100,000 daily visitors. Developed platform is an online deals site where visitors can buy items. The platform is able to provide its customers in varies European countries with a varied range of top offers.
Software Developer
Client and server-side development;
New features development;
Bug fixing;
Delivery and deployment.
BE stack: PHP 8.0, Laravel, Slim (microframework), REST API, TDD, MySQL, Big Query, Ubuntu
FE Stack: JavaScript, jQuery, Ajax, Flex, Postman, HTML5, CSS, SASS, XML, JSON, Vue.js, Gulp
Add stack:
Google cloud platform (GCP), PhpStorm with plugins, GIT, Bitbucket, ClickUp, docs.google.com, Crons, Virtual machine (VM), Docker.
Communication: daily Skype chats and calls, Weekly status calls.
Automation of code delivery (CI/CD): Kubernetes in Google Cloud Platform

Software Developer

E-real estate Solutions development for house selling websites with transparent and immersive customer experience.
Development, customization and support of various websites to sell houses. Developed solution makes selling house easy, fast, and stress-free. E-real estate website offer the most transparent, informational, and immersive customer experience to home sellers and homebuyers at specific area.
Software Developer
Requirements gathering;
Effort’s estimation;
New feature development;
Bug fixing;
Delivery and deployment.
PHP 7.2, Symfony 2-4, TWIG, MySQL, API.
Version control: GIT, Bitbacket;
Task management: Orbit
Communication: daily Skype chats and calls.
Automation of code delivery (CI/CD): server scripts for CI/CD implementation

Fullstack Software Developer

Auto auction platform development for European firsthand ex-leased used car online auction with secure and reliable buyer-seller process.
Social medical transportation service
Mobile application that allows medical personnel and people with disabilities to order special transport for transportation purpose. The first stage is to develop application for Android platform only.
Fullstack Software Developer
Requirements gathering;
Technologies stack definition;
Effort’s estimation;
Application development from scratch;
Client and server-side development;
Delivery.
React.js, Laravel, PHPUnit, React Native, MySQL, Android 8.0, REST API.
Version control: GIT;
Task management: Jira
Communication: daily Slack chat, Weekly status call.

Fullstack Software Developer

Website new features development with API data collection from various websites like eBay and Amazon for price comparison.
Developed website collect data using API from varies websites like eBay, Amazon and others. Website analyses and represents to users in friendly manner all price information to compare price options. Developed features include but not limited to:
development of new Plugin for WordPress;
WordPress API extension;
website Admin panel extension.
Fullstack Software Developer
Requirements gathering;
Effort’s estimation;
New features development;
Bug fixing;
Both front-end and back-end code development;
Delivery and deployment.
JavaScript, PHP 7.3, WordPress, MySQL/MariaDB, RSS, XML, jQuery.
Version control: GIT;
Task management: ClearWare Support system
Communication: daily Skype chats and calls.

Fullstack Software Developer

Social medical transportation service mobile application development for Android platform with special transport ordering functionality.
Developed platform is a European firsthand ex-leased used car online auction. The platform main goal is to make the entire process easy, secure and reliable for buyers and sellers all over Europe. Project includes but not limited to auction platform maintains and support with new features development and bug fixing.
Fullstack Software Developer (part time)
Collaborate with product manager to gather requirements;
Engaged in both front-end and server-side code development;
Code development;
System infrastructure setting and support;
Moving platform to Mobile version.
Backend: PHP 7, MySQL, Symfony, TWIG, Docker composer;
Frontend: Bootstrap, AJAX, JSON, JQuery;
Version control: GIT;
Task management: Jira
Communication: Skype daily calls with client.
Automation of code delivery (CI/CD): server scripts for CI/CD implementation

Software Developer

NGX-admin development with Laravel PHP backend including JWT authentication, role management, and API testing documentation.
NGX admin + backend = ready-made solution for data management. Project goal is to develop Starter Bundle using existing admin template with Laravel PHP backend. Starter include:
- Authentication using JWT tokens implemented and integrated into both client and server side;
- Basic role management (admin, user)
- Unit tests for backend repositories
- Swagger for automatic API testing and documentation.
Software Developer
Collaborate with product managers to gather requirements;
Engaged in both admin console and server-side code development;
Bundle integration;
Collaborate daily with other members of development team.
Server/Backend: PHP 7, Laravel, MySQL;
Frontend: JavaScript, Angular 8;
Communication: Skype daily calls with client.

Dashboard Developer

Rental SPA e-commerce booking platform development for lease spaces in high walkability locations with user management features.
Rental SPA
Project main goal is to create e-commerce booking platform focused on lease spaces located on high walkability places, such: shopping centers, airports, railways stations and so on. There are three development fields:
General front end, where a user can explore and collect offers by himself;
Dashboard, where users manage their features like approve, mediate, reject requests, list users, create offers and so on;
Backend, meant to be all server-side stuff.
Dashboard Developer
Participated in project planning and infrastructure setting;
Requirements analyze and efforts estimation;
Develop well-designed, testable, efficient code;
UI development;
Collaborate daily with project manager and other members of development and support team.
JavaScript, JQuery, JSON, Symfony, Backbone.js, Bootstrap 4.
Version control: GIT;
Communication: Slack daily team chatting, Skype daily calls with client.

Full-Stack Developer

Vario ERP system web-application development for pipe and sewer technology companies with resource planning and GPS tracking modules.
Vario ERP web-application development. Vario Suite is industrial software for pipe and sewer technology, sewer and sewer construction companies with a various module: resource planning and reporting, GPS tracking, route planning, CRM, commercial proposals, orders, invoices, bookkeeping and much more.
Full-Stack Developer
Participate in and contribute to product design and architecture direction meetings;
Collaborating with product manager and CTO on implementing new and existing features;
Develop well-designed, testable, efficient code;
Engaged in both UI side and Server-side code development;
Collaborate daily with other members of development and support team.
Backend: MySQL, PHP 7.3, Node.JS, AWS;
Frontend: JavaScript, JQuery, Ext.JS;
Version control: GIT;
Task management: GitHub, Jira
Communication: Skype, Email, Daily calls with a client.
Automation of code delivery (CI/CD): server scripts for CI/CD implementation

Web developer, programmer

Development and improvement of SPA, websites and site modules with frontend and backend programming, CMS development and security implementations/
Various websites Frontend and Backend programming.
Web developer, programmer
- new features development;
- bugs fixing;
- frontend programming;
- backend programming;
- writing a number of PHP programs for parsing and changing text, HTML, and XML files;
- site development and software support to implement new ideas for the conversion increase;
- development of routing system of the site for transformation into the multi-regional site;
- full stack site development for real business;
- development of the online store or a site or blog from the scratch or on the basis of template of the WordPress or OpenCart or Simpla or the self-written CMS;
- redesign and improvement of sites on the basis of the WordPress or OpenCart or Simpla or the self-written CMS;
- user interface improvement;
- layout, and automation programming;
- WordPress CMS plugin creation
- site or landing page improvement for increasing conversion;
- protection from: XSS-injections, SQL-injections, XSRF/CSRF-injections;
- the adaptation and improvement of sample modules of the three.js library.
PHP, JavaScript, WordPress, HTML, CSS, React.js, WebGL, GLSL, MVC, CRUD, OpenCart, Bootstrap and Flex adaptive model, SantaFox, Simpla, AJAX, MySQL, jQuery, JSON, XML, Git, PhpStorm

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