Роман

Kryvobok Roman Valeriiovych
Full Stack Developer (Opencart, Laravel, Vue.js, Node.js, TS, JS, SQL) remote
Phone: [открыть контакты](см. выше в блоке «контактная информация»)
E-mail: [открыть контакты](см. выше в блоке «контактная информация»)
LinkedIn: [открыть контакты](см. выше в блоке «контактная информация»)
Telegram: https://t.me/k4m4z
Desired salary: $1500 per month or $15/hour

Key Skills
• Back-end: PHP (7.2–8.4), Node.js, Laravel, Doctrine ORM
• Front-end: JavaScript (ES5/ES6), TypeScript, Vue.js (Composition API), Twig, HTML5, CSS3 (Bootstrap 5, Tailwind CSS 3 and 4)
• CMS & e-commerce: OpenCart (handling large product feeds, custom modules)
• Databases: MySQL / MariaDB — design, indexing, query optimization
• API & integrations: RESTful API, Google/Facebook API, ChatGPT API and other services, OAuth2
• DevOps & infrastructure: Docker, Apache, Nginx, Linux (Debian/Ubuntu), terminal, Git, GitHub Actions, CI/CD
• Tools: Postman, X-Debug, XHProf, Gulp, Vite
• Principles: OOP, SOLID, MVC, DRY, KISS, Mobile-First, clean code
• Caching: Redis, Memcached

Experience (4+ years)
Full Stack Developer & Tech Support (NDA)
2021 – present
• Analyzed third-party code, identified critical bugs and vulnerabilities, implemented stable fixes;
• Refactored backend, migrated business logic to services, added caching, reduced load;
• Optimized SQL queries and added indexes to speed up application and API responses;
• Deployed and maintained projects in Docker environments, configured CI/CD (GitHub Actions → staging/production);
• Configured Apache and Nginx, v-hosts, SSL, gzip compression, routing for SPA;
• Worked with CLI and Bash scripts to automate routine tasks (backups, migrations, logs);
• Integrated third-party services: Google, Facebook Pixel, ChatGPT API and others; configured secure OAuth2 authorization;
• Developed internal APIs for integration with CRM and payment gateways, prepared technical documentation;
• Optimized frontend: resource minimization, lazy-loading, image optimization.

Portfolio
Mostly worked in NDA-bound teams, so I cannot provide a public portfolio. However, I am happy to complete a test task to demonstrate my skill level.

Languages
• Ukrainian — native
• English — intermediate (reading technical documentation, communication)
• Russian — fluent

Ready to join an ambitious team where I can solve complex technical tasks and further develop in system architecture and optimization.