11/11/2026 updated
100 % available
Senior Fullstack Developer | PHP & Node.js
Kivertsi, Ukraine
Only remote
Master's Degree in Computer ScienceAbout me
Web developer since 2016, mainly focused on PHP, Laravel, Yii2, Node.js, SQL, APIs, integrations, legacy projects, and high-load systems. Experienced in backend design, caching, database optimization, and building stable, maintainable production solutions.
PHPDevOpsLaravelPostgreSQLMySQLNGINXNode.jsPHP DevelopmentRedisYii PHP FrameworkPHP FrameworksExpress.jsBackendBackend ProgrammingFull Stack Development
PHP & Laravel Development
Extensive experience in backend development using PHP, Laravel, Yii2, and Yii1. Development and maintenance of APIs, backend services, integrations, legacy projects, and high-load systems since 2016.
Database Design & Optimization
Practical knowledge of MySQL, PostgreSQL, MongoDB, and Elasticsearch/OpenSearch. SQL optimization, database indexing, and performance tuning for production systems, including high-load environments.
Node.js & API Development
Solid experience with Node.js and Express.js for building high-traffic backend services and REST APIs. Design of new modules, APIs, and backend logic, including implementation of caching systems that significantly reduced CPU load.
Caching & Message Queues
Hands-on experience with Redis, RabbitMQ, and Memcached for caching and asynchronous processing in high-load applications.
Infrastructure & DevOps
Practical use of Docker, Git, Nginx, and Apache. Experience writing Docker images, configuring GitLab CI pipelines, and working with GitHub Actions and Docker images for CI/CD workflows.
Cloud & Third-Party Integrations
Integration with external services such as Cloudflare API, QuickBooks, and payment gateways. Experience automating domain infrastructure management via API.
Performance Optimization & High-Load Systems
Experience in technical design of backend modules for high-load systems, including query optimization and caching strategies that reduced constant CPU load from 20-25% to 5-10%.
AI-Assisted Development Tools
Familiarity with AI-assisted development tools and LLM code assistants to support and accelerate backend development workflows.
Legacy Code & Refactoring
Experience working with legacy codebases, refactoring existing logic, and gradually migrating projects to modern frameworks such as Symfony.
Extensive experience in backend development using PHP, Laravel, Yii2, and Yii1. Development and maintenance of APIs, backend services, integrations, legacy projects, and high-load systems since 2016.
Database Design & Optimization
Practical knowledge of MySQL, PostgreSQL, MongoDB, and Elasticsearch/OpenSearch. SQL optimization, database indexing, and performance tuning for production systems, including high-load environments.
Node.js & API Development
Solid experience with Node.js and Express.js for building high-traffic backend services and REST APIs. Design of new modules, APIs, and backend logic, including implementation of caching systems that significantly reduced CPU load.
Caching & Message Queues
Hands-on experience with Redis, RabbitMQ, and Memcached for caching and asynchronous processing in high-load applications.
Infrastructure & DevOps
Practical use of Docker, Git, Nginx, and Apache. Experience writing Docker images, configuring GitLab CI pipelines, and working with GitHub Actions and Docker images for CI/CD workflows.
Cloud & Third-Party Integrations
Integration with external services such as Cloudflare API, QuickBooks, and payment gateways. Experience automating domain infrastructure management via API.
Performance Optimization & High-Load Systems
Experience in technical design of backend modules for high-load systems, including query optimization and caching strategies that reduced constant CPU load from 20-25% to 5-10%.
AI-Assisted Development Tools
Familiarity with AI-assisted development tools and LLM code assistants to support and accelerate backend development workflows.
Legacy Code & Refactoring
Experience working with legacy codebases, refactoring existing logic, and gradually migrating projects to modern frameworks such as Symfony.
Experience
Professional experience10+ years
Freelancer since2018
Languages
EnglishGoodRussianFluentUkrainianNative speaker
Project history
Working on several internal and product projects using PHP, Yii2, and Node.js. Participated in development and maintenance of key projects, designed and developed an internal service for managing domain infrastructure, implemented Cloudflare API integration, wrote Docker images and configured GitLab CI pipeline during Kubernetes migration, worked on high-load Node.js projects, designed and implemented a caching system that reduced CPU load from 20-25% to 5-10%, participated in technical design of new functionality, and contributed to early-stage migration from Yii2 to Symfony.
Maintained and developed the backend API of a SaaS product for field service management. Worked on refactoring an existing QuickBooks integration, including backend logic, data processing, and interaction with the external API.
Worked on several PHP backend applications, maintaining existing logic and implementing new functionality. Worked with APIs, databases, backend integrations, and payment gateways. Developed a local development environment using Docker.