Cortance

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 skilled Senior PHP Developer with a strong focus on backend development and extensive experience in creating robust applications. With 7 years in the field, he specializes in PHP and Laravel, effectively delivering scalable solutions that cater to diverse industries. His expertise includes working with various technologies such as JavaScript, PostgreSQL, and MySQL, which he has utilized to optimize databases and enhance performance. He has hands-on experience deploying applications via Docker and AWS, ensuring smooth production processes. A solid understanding of REST APIs complements his skill set, enabling seamless integration between subsystems and third-party services. Throughout his career, Serhii has tackled challenges in sectors like e-commerce, healthcare, and fintech, demonstrating his adaptability and commitment to quality. His technical acumen is paired with effective collaboration, particularly in agile environments, ensuring timely project delivery. Serhii holds no formal degree or certifications but brings valuable practical knowledge to every project he undertakes.

Main technologies

Additional skills

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;

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.