Senior PHP Developer

Serhii K

Information

Available hours \ week
40 h/w
Seniority level
Senior
Years of experience
7 yrs.
Location
Ukraine, Lviv
Nationality
Ukraine
Timezone
(GMT+02:00) Kyiv

Languages

Ukrainian
Fluent (C2)
English
Upper-Intermediate (B2)

About

Serhii is a Senior PHP Developer with 7 years of experience in full-stack development. His core competencies include PHP, JavaScript, and Laravel, where he has successfully tackled challenges such as complex application architecture and integration with third-party services. He has contributed to various sectors, including e-commerce, healthcare, and fintech, demonstrating strong skills in REST API development and performance optimization. Serhii holds degrees in Computer Science and possesses AWS certification.

Experience

Fashion e-commerce portal

Back-end Developer

About the Project

The goal of this project was to build and maintain a scalable e-commerce platform for a fashion brand using Laravel. The store focuses on selling seasonal clothing collections and promotional capsule drops. The platform features advanced product filtering, dynamic collection pages, custom upsell and cross-sell logic, and full integrations with Stripe for payments, Klaviyo for email marketing, and Google Analytics 4 for conversion tracking.

  • E-commerce
  • Retail

Responsibilities

- Full project planning, technical architecture, and delivery estimation; - Back-end development; - Integration with third-party services; - Performance optimization; - Close coordination with the Project Manager for sprint planning and updates;

Skills & technologies

PlugPlug

Back-end Developer

About the Project

Web and mobile applications designed to cater to the needs and interests of passionate travellers worldwide. This platform is a dynamic social network that brings together individuals who share a love of travel and adventure. It offers a unique platform for users to connect, share their travel experiences, and explore new destinations, all while ensuring privacy and security.

  • Social Media
  • Travel

Responsibilities

- Development of backend and web admin panel; - Creating REST API; - Optimising the database; - Deploying the project to production via Github Actions and AWS.

CRM System

Full-stack developer

About the Project

The project is treatment CRM system for doctors and kids with special needs for American market.

  • Healthcare

Responsibilities

My contribution involved consultations and problem-solving related to architecture, establishing communication between multiple subsystems via API. Developed an MVP web application for doctor’s treatment sessions, including live audio recordings of treatments. ). Set up CI/CD on Github Actions, with test assertions as conditions before merging.

AI based Real Estate project

Back-end Developer

About the Project

An AI-powered real estate platform that generates and provides clients with all the necessary information and documents for renting or buying property in accordance with Dutch law.

  • Real Estate
  • Retail

Responsibilities

- Frontend and Backend development; - Creating REST API; - Bug fixing; - Adding new features.

Skills & technologies

Back-end for a mobile banking app

Back-end Developer

About the Project

A mobile banking platform that enables users to manage accounts, make transfers, pay bills, track transactions, and perform daily financial operations. The goal was to deliver a secure, fast, and reliable digital banking experience with real-time services for both individuals and small businesses.

  • Fintech
  • Banking

Responsibilities

I worked as the Back-end developer, responsible for the back-end architecture, core feature development, secure API integrations, and overall code quality to deliver a stable, high-performance banking platform used by thousands of users.