Vlad

Vlad Ovsienko
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[open contact info](look above in the "contact info" section)

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Middle PHP Developer [open contact info](look above in the "contact info" section)

Location
Laravel, Yii2
Dnipro, Ukraine

GitHub, LinkedIn, Telegram

SUMMARY

Strong Middle PHP Backend Developer with 6+ years of experience — from
refactoring legacy systems and optimizing SQL to building microservices and integrating
complex APIs. Strong understanding of PHP, JavaScript, and SQL, and frameworks like
Laravel, Yii2. Experienced with AWS, MySQL, RabbitMQ, Redis, MongoDB. Regularly apply
design patterns and architectural best practices to ensure maintainable code. Strong
grasp of Clean Code, SOLID, and REST principles. Proficient with Docker, Git, Composer,
unit testing, and documentation. Worked both independently and in Agile teams (Scrum,
Kanban). Quickly adapt to new projects and grasp their core concepts thanks to diverse
experience across various infrastructures. Delivering business value through clean,
scalable backend solutions that align technical execution with product goals.

TECHNICAL SKILLS

-​ Languages: PHP 5.6-8.4, JavaScript, SQL, HTML, CSS.
-​ Frameworks & Libraries: Laravel 8-12 (3+ years), Yii2 (6+ years), jQuery, Bootstrap,
Composer, NPM.
-​ Databases: MySQL (advanced: query optimization, database design), MongoDB.
-​ Technologies: Linux (Ubuntu), Docker Compose (write), Nginx (basic), AWS
(Lightsail), RabbitMQ, Redis, WebSocket, RESTful API.
-​ Architecture & Patterns: OOP, MVC, SOLID, DRY, KISS, YAGNI, Design Patterns,
Database Normalization, Microservices.
-​ Testing & Debugging: PHPUnit (200+ written), Sentry, Xdebug.
-​ Dev Tools: Git (Gitlab, GitHub, Bitbucket), Swagger, Postman.
-​ Development Practices: Jira, Agile (Scrum, Kanban), Code Review.
-​ API Integrations: iPay, Google Workspace, GA4, Chat GPT, Slack, Facebook (Auth,
Pixel), OAuth2, JWT, Webhooks, Robokassa, Roistat, Sendpulse, E-Chat, BulkSMS,
SMS-Fly.

LANGUAGES

English - B1 (Intermediate), Ukrainian - Native

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PROFESSIONAL EXPERIENCE

Freelance
PHP Backend Developer
February 2025 - Present
-​ Building and maintaining Laravel-based tools for internal use and open-source.
-​ Improving system design, testing practices, and backend performance.
-​ Publishing work on GitHub to demonstrate practical backend expertise and clean
architecture.

IT STEP Academy ( EdTech product company ), Ukraine.​ ​ ​ 5 years 8 months
Middle PHP Backend Developer
August 2021 - February 2025 | 3 years 3 months | Full-time, Remote
-​ Migrated a monolithic CRM to modular architecture (Angular 15 + Yii2, REST API),
documented via Swagger, reducing development complexity and onboarding time
by 60%.
-​ Responsible for core CRM backend API processing client transactions, payments,
and requests, supporting business continuity and data accuracy.
-​ Upgraded legacy systems from PHP 5.6 to 7.4, improving performance and security.
-​ Built a RESTful Laravel microservice for branch data and created 6 Composer
packages, reducing integration overhead and boilerplate by 30%.
-​ Developed auto-assessed test system with AI moderation, saving ~50+ hours
monthly in manual work (profpasport.com).
-​ Synced internal user DB with Google Workspace, enabling full Gmail account
control from admin panel — saving 5+ hours of manual work weekly.
-​ Designed and delivered 30+ dynamic reports integrated into CRM, increasing sales
visibility by 40% and reducing manual report generation by 70%
-​ Boosted unit test coverage by 80%, reducing regressions and increasing overall
system reliability.
-​ Integrated 4 analytics tools, 2 auth systems & 4 messaging services (Viber,
Telegram, Slack etc.), automating client communication and data flow.
-​ Slashed average query response time by ~50% across 30+ modules through
advanced SQL optimization and indexing strategies.
-​ Integrated WebSocket, Redis & RabbitMQ to enable real-time CRM features,
enhancing UX and data consistency.
-​ Drove code quality improvements through rigorous code reviews and mentoring
junior colleagues.
Junior Full-Stack Developer
July 2019 - August 2021 | 1 year 11 months | Full-time, On-site
-​ Provided tech support for CMS-based landing pages (itstep.org) using PHP (Yii2).
-​ Built and styled UIs for internal and external projects using JS, Angular 2, and
TypeScript — from static pages to real-time views via WebSocket.
-​ Integrated NPM packages to enhance frontend functionality and user experience.
-​ Integrated 2 payment gateways (iPay, Robokassa) for fast and convenient payment.
-​ Transformed legacy endpoints into a full-fledged RESTful API, which standardized
communication between modules and simplified new feature development.
-​ Collaborated in Agile teams (Scrum, Kanban), consistently meeting deadlines and
improving sprint accuracy through precise task estimation.
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EDUCATION

IT STEP Academy, Dnipro — Certificate in Software Development
September 2014 - July 2019
Covered Full Stack Web, Desktop Apps, and Android Development.

Classic Private University, Dnipro — Master’s Degree in Enterprise Economics
July 2015 – January 2021
Studied business strategy, enterprise management, and financial analysis.

CERTIFICATES

Certificate in Software Development, IT STEP Academy, 2019
View Certificate

Master’s Diploma in Enterprise Economics, Classic Private University, 2021
View Diploma

PERSONAL PROJECTS

Minecraft Server Management Tool
Admin Dashboard + Microservice
Tech stack: PHP (Laravel), MySQL, Redis.
Built a panel for managing gameplay and a microservice suite for server automation.

Student Social Network
Full-stack Web & Android App
Tech stack: PHP (Yii2), JavaScript (jQuery), MySQL, Java (Android)
Developed a social platform for students with messaging, profiles, and Android app. Used
for diploma defense.

Salary Time Tracker
Desktop App for Time & Pay Tracking
Tech stack: C#, WPF
Designed a desktop tool for employees to log work hours with real-time salary calculation.

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