Сергій

Name: Sergey Golovanov
Age: 40
City: Kyiv, Ukraine
Phone: [відкрити контакти](див. вище в блоці «контактна інформація»)(Telegram sergolova86)
Email: [відкрити контакти](див. вище в блоці «контактна інформація»)
Linkedin: [відкрити контакти](див. вище в блоці «контактна інформація»)
Education: High, Khmelnitsky National University, Specialist in the Faculty of Mechanical Engineering
Faculty: "Mechanical engineering". Diploma: “Computer modeling on CNC machines”(2007)
English: Intermediate (B1)

Middle+ PHP / Backend Developer with 4+ years of commercial web development experience and a strong
engineering background. Specializing in high-load module development, third-party API integrations, and e-
commerce platform evolution. Effectively handling tasks of any scale — from minor bug fixes and small module
integrations to end-to-end complex system architecture with full production deployment support. Beyond the core
web stack, I have practical experience in Windows application development and microcontrollers. Easily
adaptable to new tools, technologies, and project requirements.

Technologies & Frameworks

Backend: PHP 7.4–8.3, Symfony (Doctrine ORM), Laravel, Magento 2
Databases & Storage: MySQL, MariaDB, Redis
Message Brokers & Queues: RabbitMQ, Background Workers, Cron Jobs
Real-time & Messaging: Centrifugo, WebSockets
CMS & E-commerce: WordPress, OpenCart
APIs: RESTful API design, Third-party API integrations, Webhooks, Telegram Bot API
DevOps & Environment: Linux, Docker Compose, Git, Nginx, Apache, Bash Scripting
Frontend: Vue.js, TypeScript, JavaScript, HTML5, CSS3, Bootstrap 5, Twig, jQuery, AJAX
AI-Assisted Engineering: LLM Integration & Prompting (Gemini, Copilot, Codex, Claude), Agent Orchestration,
CLI AI Agents, MCP Servers, Vibe Coding / Rapid Prototyping
Coding Principles & Architecture: OOP, MVC, SOLID, KISS, DRY, YAGNI, PSR Standards
Observability & Security: Logging, Request Tracing, Error Monitoring, SQLi / XSS / CSRF Protection
Testing & Quality Assurance: Unit Testing (PHPUnit), Code Review, Mentoring
Development: PhpStorm, VS Code, Xdebug, Profiler, Postman, SEO Spider
Build Tools & Asset Management: Vite, Webpack, Composer, npm, nvm
Collaboration & Project Management: Jira, ClickUp, Bitbucket, GitHub, Slack, Scrum / Kanban workflows

Work experience

Period: March 2024 – August 2026 (30 month)
Company: Solomono (https://solomono.net)
Position: Backend / Full-Stack Developer

Responsibilities & Key Contributions:
Core Engine & System Architecture:
• Designed, versioned, and documented high-throughput custom APIs and non-REST protocols for internal
and client integrations.
• Engineered a high-throughput user & admin activity logging, storage, and analytics engine.

• Developed multi-factor authentication mechanisms (SMS, Email) and BankID integration modules.
AI Integrations & Automation:
• Built large-scale, automated content translation pipelines leveraging OpenAI Batch API, ChatGPT, DeepL,
and Gemini APIs with PHPUnit coverage.
• Integrated AI tools for automated e-commerce branding generation (text-to-logo).
E-Commerce & Logistics Ecosystem:
• Developed high-load integration modules for Nova Poshta Fulfillment (WMS API), UPS, SalesDrive, and
KeyCRM.
• Implemented multi-queue background console workers for email delivery, automated Excel reporting, and
dynamic XML/Facebook feed generators.
Frontend & Admin Tools (Vue 3 / TypeScript):
• Built full-stack product/category management dashboards using Vue, TypeScript, and AJAX, including
dynamic rendering for massive category trees (10k+ nodes).
• Integrated print-ready shipping label generation and multi-channel notification bots (Telegram Bot API).
Mentorship & Quality Assurance:
• Conducted regular code reviews for mid-level developers, onboarded new team members, and performed
application profiling and performance tuning.

Period: March 2023 – December 2023 (9 month)
Company: AsperPro
Position: Full-Stack Developer

Responsibilities & Key Contributions:
E-Commerce Development & API Integrations (Magento 2 / VueStorefront / OpenCart 3):
• Developed XML feeds for Google Merchant & eSputnik, hierarchical REST API request logging, and XML
sitemaps for high-load e-commerce platforms.
• Implemented subfolder-based multi-language architecture in OpenCart 3 (controllers, models, DB query
optimization, custom Docker deployment).
• Enhanced VueStorefront UI components (sticky comparison headers, dynamic promo-banner lifecycle
management).
WordPress Multisite & High-Traffic Content Platforms:
• Architectural support and optimization for multi-domain media platforms (custom post types, ACF Pro,
Gutenberg blocks, and dynamic JSON-driven admin toolkits).
• Implemented transient query caching, database-level content manipulation scripts, dynamic rating
engines, and third-party review scrapers.
• Configured technical SEO foundation: Schema.org microdata, URL redirect matrices, and dynamic XML
sitemaps.
Performance Optimization & Core Web Vitals:
• Executed comprehensive page speed optimization to achieve the Google PageSpeed "Green Zone"
(WebP/SVG assets, route-based asset splitting, preload/preconnect strategies, and resource caching).
• Performed profile analysis, PHP version upgrades, and disaster recovery/cross-hosting migrations.

Period: February 2022 – February 2023 (12 month)
Company: Intellect Internet Technology
Position: Junior developer
Responsibilities & Key Contributions:
Core Backend & Architecture (Symfony / Doctrine ORM):
• Designed and implemented enterprise CRUD modules for managing distributor-dealer networks, utilizing
Symfony Components (Forms, Controllers, Services, Migrations) and Doctrine QueryBuilder.
• Developed a hash-based secure file storage management system and activity tracking services to monitor
system usage and user interactions.

Notification & Messaging Engine:
• Engineered a multi-channel messaging service integrated with external APIs (SMS, Viber, In-App
notifications) for automated distributor-dealer communication.
Analytics & Data Reporting:
• Implemented data visualization tools using vis-timeline and HTML5 Canvas to present complex sales
analytics and purchase trends.
• Developed automated background report generators with CSV export capabilities for high-volume
datasets.

Period: February 2007 – January 2022
Company: Service Center “Microsystem”
Position: Service Engineer

Key experience:
Hardware & Electronics Diagnostics:
• Performed low-level diagnostics, component-level repair, and maintenance of complex electronic and
mechanical office equipment.
• Embedded Development & Firmware: Designed and developed custom microcontroller-based electronic
units (AVR, STC) using C (Keil, AVR Studio, Arduino IDE).
• Software Tools & Automation: Developed desktop utilities and automated diagnostics software in Pascal
(Delphi) to streamline testing procedures and hardware configuration.