Hi, I`m Sergei
PHP / Full Stack Developer

Senior PHP Developer | Full Stack Developer with extensive experience in SaaS development (B2B, B2C), specializing in user accounts, billing, subscription systems, API development for various purposes, XML import/export, and API integration with external systems (payment systems, banks, etc.), as well as complex business logic.

Based in Serbia with a legal entity, available for B2B contracts.
Located in the CET timezone.

Working routine

I`m currently working with Yii, but I like Symfony better. Using PHP 8.3 and 7.4. Usually storing data in MySQL or PostgreSQL and caching in MongoDB or Memcached. Using Docker. On Frontend I use vanilla JavaScript with Webpack and sometimes ReactJS / Vue.

Experience

Extensive experience in maintaining and refactoring large codebases.
Migration of legacy projects to newer PHP versions.
Designing and developing complex projects from scratch.
Managing a small development team.

backend: PHP (Yii, Symfony, API, monoliths, legacy)
frontend: JavaScript, ReactJS, Vue, HTML, CSS, Webpack
mobile: Objective-C
databases: MySQL, MongoDb, PostrgreSQL, Memcached, ElasticSearch, ClickHouse, Redis
testing: PHPUnit, Codeception

Contact

Let`s stay in touch: LinkedIn