Hi, i'm Oleksandr Roskovynskyi
Senior PHP Backend Developer
Interested in building high-quality, high-load fintech products within a professional team
Senior PHP Backend Developer with 9+ years of experience in backend and full-stack web development across high-load, data-driven, and enterprise-level systems.
Specializing in PHP 8+, Symfony, Laravel, and PostgreSQL, with a strong focus on DDD, modular monoliths, and microservices architectures.
Proven track record in financial, analytics, and data visualization platforms.
Passionate about clean architecture, SOLID principles, and engineering excellence.
Delivered over 20+ production-grade projects with consistent high code quality.
Reduced API response time by 30–40% through query indexing and caching strategies in Redis.
Migrated monolithic legacy PHP 5 systems to modular Symfony services with improved infrastructure using Docker and CI/CD.
O.Roskovynskyi
Profile
Full Name
Oleksandr Viktorovych Roskovynskyi
Lives in
Ivano-Frankivsk, Ukraine (previously lived in Kyiv)
Work Experience
Senior PHP Backend Developer in signNow (AirSlate/pdfFiller)
Web Development | December 2020 - present
- Built and maintained scalable B2B and B2C applications of SignNow Payment Systems with Symfony and Laravel backends using PostgreSQL, Redis, Horizen, Grafana and RabbitMQ
- Designed modularized REST APIs and background job ecosystems with Laravel Horizon and queues, optimized queries to databases
- Processing mobile in-app purchases from App Store and Google Play
- Delivered secure deployments with Docker containers (Kubernetes), GitHub Actions, and test automation
- Implemented Hexagonal architecture with Domain and Application layers to facilitate maintainability
- Integrated financial data APIs and admin dashboards
Full stack PHP Developer in Clever Business Management
Web Development | March 2020 - November 2020
- Architecture design and development of CRM, ERP, SaaS systems
- Built and improved API for web-systems using PHP and Laravel/Lumen frameworks
- Built and improved MicroService for SuiteCRM using Symfony and RabbitMQ for the credit scoring processing in one of the Ukrainian banks
- Created and maintained Laravel Nova based web-projects
- Optimized queries to databases, added queues and caching layers with Redis
- Rewritten source code of the initial project, upgraded version of framework, improved testing coverage
Full stack PHP Developer in the unit of the Ministry of Defense of Ukraine
Social engineering | March 2015 - February 2020
- Creation of complex automation systems for social networks (Laravel/VueJS)
- Created and maintained Wordpress based sites and Templates
- Development and improvement of internal software
- Installation, setup and administration of server hardware and systems
- OSINT
Volunteer Work
Web Design & Web Development | July 2017 - present
- Assistance in the organization of technical conferences Fwdays.
- Creating websites for acquaintances.
Education
PHP Fwdays
Fwdays conference | January 2020 - February 2020
- Regular participant of the PHP Fwdays and architecture
- CERTIFICATE of participant link
DIVE INTO REFACTORING OF REFACTORING.GURU
An online course about code smells and refactoring | January 2020 - February 2020
- Refactoring Process
- Dirty/Clean Code
- Code Smells. Refactoring Techniques
- CERTIFICATE of COMPLETION https://refactoring.guru/cert/r/MjI1MjM
FULL STACK PHP TRAINING COURSES OF BINARY STUDIO ACADEMY
Distance Learning Courses | July 2019 - September 2019
- PHP 7. Laravel - (1 MONTH)
- ES6. VueJS - (0,5 MONTH)
- Group project Metrica - collects data from web pages, handle it and visualize https://github.com/BinaryStudioAcademy/bsa-2019-metrica - (1,5 MONTH)
PHP Training Courses
Online Learning Courses | January 2017
- РНР. Level 1. Web-development fundamentals - (24 AH)
- PHP. Level 2. Web-sites development with MySQL - (24 AH)
- PHP. Level 3. Professional development with PHP7 - (24 AH)
Wordpress Content Management System
Online Learning Courses | April 2016 - May 2016
- WordPress. Level 1. Creating a Website. Content Manager - (16 AH)
- Wordpress. Level 2. Creating and maintaining sites with complex structure - (16 AH)
- Web-mastering. Configuring Web Servers - (24 AH)
Introduction to Web Development
Online Learning Courses | November 2015 - February 2016
- HTML and CSS. Level 1. Web Development using HTML5 & CSS3 - (32 AH)
- HTML and CSS. Level 2. Cross-browser development, usability fundamentals - (32 AH)
- HTML and CSS. Level 3. Advanced methodologies and tools typesetting - (24 AH)
Zhytomyr Military Institute of the State University of Telecommunications
Master (specialist) educational level | August 2010 - February 2015
- Graduated with honors in Systems Engineering
Skills
Software Skills
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PhpStorm 90%
-
Docker / Git / Composer 80%
-
Adobe Photoshop 80%
Code Skills
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PHP 7 / 8 90%
-
Laravel / Lumen / Symfony 90%
-
SQL / MySQL / PostgreSQL / MongoDB / Redis / Memcached 80%
-
RabbitMQ (AMQP) / Kafka / REST / JSON-RPC / gRPC / WebSockets / GraphQL 80%
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DDD, Hexagonal Architecture, Microservices, SOA, SOLID, KISS, DRY, YAGNI 80%
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Docker, Docker Compose, Kubernetes, CI/CD, Grafana, Loki, NGINX 80%
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PHPUnit, Playwright (E2E) 70%
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SASS / SCSS / WEBPACK / GIT / GITLAB / GITHUB 75%
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Javascript - ES5 / ES6 60%
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VueJS / Vuetify 50%
Language Skills
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Ukrainian Native
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English Intermediate
Portfolio
Some Works & SPA
Contact
Send me a message
Address
Kyiv, Ukraine