Senior PHP / Full-Stack developer with 9+ years of professional experience in building and maintaining complex web applications and backend systems for real production environments (B2B and B2C). I specialize in PHP development with Yii2, CodeIgniter, and Laravel, building REST API systems, processing large volumes of data, and integrations with external services. I have extensive experience in full-stack projects with Vue.js and ReactJS, as well as working on large-scale systems used by clients worldwide.

NAME Stivan Stefanov
PHONE 087 836 9206
WEBSITE s-stefanov.com
BIRTH DATE 02.04.1997
EMAIL work@s-stefanov.com
LANGUAGES Bulgarian, English
INTERESTS Web design, Web development, Application development
LOCATION Sofia

Technical skills

01.Debugging and problem solving

I can effectively analyze and identify the causes of issues in the code. I approach every challenge systematically by isolating the source of the error and finding the optimal solution to fix it. This allows me to overcome obstacles and ensure stable and reliable application behavior.

02.Algorithms and data structures

I have deep experience in algorithm optimization and applying efficient data structures, which enables me to build high-performance and scalable solutions. I understand algorithmic complexity (Big O notation) well and can choose the most suitable data structures based on the task.

03.Understanding networks and protocols

I have knowledge of HTTP, WebSockets, and REST, which enables me to build efficient client–server applications.

04.Readable code

I follow SOLID principles, clean code, and good architecture to create readable, maintainable, and well-structured software. I believe an organized codebase not only makes my work easier but also improves efficiency and collaboration across the whole team.

05.Testing and software quality

I think about quality from the very beginning. I write unit and integration tests, automate checks in CI/CD, and track metrics to prevent regressions and ensure reliable production behavior.

Social skills

01.Innovation

I propose fresh ideas, build quick prototypes, and validate what works based on data. My goal is always a better result.

02.Adaptability to new technologies

I learn new tools and frameworks easily. I evaluate pros and cons and integrate them into the system without breaking what’s already built.

03.Motivation and desire for growth

I focus on personal and professional growth. I set clear goals, learn intentionally, and actively seek feedback. I apply what I learn, share knowledge with the team, and maintain a sustainable pace of development.

04.Attention to detail

I care about quality and consistency. I pay attention to clear specifications, tests, documentation, and edge cases.

05.Proactive communication

I share status, risks, and dependencies on time. I ask precise questions and align expectations with all stakeholders.

06.Teamwork

I work effectively in a collaborative environment. I participate in code reviews, help colleagues, and focus on the team’s common goals.

summary

Education and experience

EDUCATION custom-line

ECONOMIC INFORMATICS

Secondary School "Hristo Botev", Oryahovo — 2011–2016

MECHATRONICS

"Technical University", Sofia — 2016–2021



PROFESSIONAL EXPERIENCE custom-line

Mid PHP Developer

ABC Global (2017 - 2019)

  • Development and maintenance of web applications with PHP (OOP), CodeIgniter, and Yii2.
  • Building and maintaining REST APIs and integrations with external systems.
  • Result: stable maintenance and evolution of production applications.

Senior PHP Developer

Intersoftpro (2019 - 2025)

  • Development of themes and modules for WordPress, PrestaShop, OpenCart, and Magento.
  • Building a large and complex hotel reservation system.
  • Result: a large-scale system delivered with complex business logic and real clients.

Full Stack Developer

Opencode (2019 - 2025)

  • Development and maintenance of REST API systems with Yii2.
  • Working with large volumes of data (over 12 million records).
  • Imports, exports, and admin interfaces with Vue.js (v2 and v3).
  • Working in a Linux environment (RHEL) with multiple machines and nodes.
  • Result: stable production systems used by clients worldwide.

Full Stack Developer

Sevenways (2019 - 2025)

  • Development of complex websites and custom web systems according to client requirements.
  • Working with WordPress, PrestaShop, OpenCart, and Magento.
  • Building interfaces with HTML5, CSS, ReactJS, and Vue.js.
  • Result: delivered non-standard solutions tailored to specific business requirements.

Skills & Tools

Web stack focused on modern technologies.

Frontend

100%

HTML

85%

CSS

85%

TailwindCSS

80%

Bootstrap

65%

jQuery

70%

Vue.js

70%

React

Backend

90%

PHP

80%

Laravel

70%

CodeIgniter

70%

Yii2

75%

MySQL

70%

PostgreSQL

75%

Apache

70%

Nginx

80%

Linux

CMS & E-commerce

80%

WordPress

80%

WordPress Modules

80%

OpenCart Modules

70%

PrestaShop Modules

DevOps & Tools

75%

Docker Containers

95%

Git

85%

GitLab

80%

Bash

contacts

HAVE A QUESTION?

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