Hi, my name is

Kacper

I build things.

Software developer specializing in backend systems, real-time applications, and exploring the Rust ecosystem. Currently focused on building performant web applications with modern tech stacks.

skills

Languages

PHP, TypeScript, JavaScript, Rust

Frameworks

Symfony, Nest.js, API Platform

Databases

PostgreSQL, MySQL, MongoDB, Redis

DevOps

Docker, GitLab CI/CD, Terraform

Cloud

AWS, GCP

Message Queue

RabbitMQ, SQS

Architecture

DDD, CQRS, Hexagonal, TDD

Tools

Git, PHPUnit, Rector, PHPStan, PHP CS Fixer, xDebug, Claude

IDE

PHPStorm, CursorAI, VSCodium

experience

PHP Developer

—Open Nexus Sp. z o.o.

Aug 2025 — Present

Maintaining legacy public proceeding system. Database query optimization. Creating new modules and rewriting the old system on new architecture.

PHP 8.xPHP 7.3Symfony 7/8Symfony 3.4MySQLRabbitMQAPI PlatformPHPUnitDockerGitLab CIGCPTerraform

PHP/TypeScript Developer / DevOps

—Coraz Lepsza Firma

Jan 2023 — Jul 2025

Rewriting legacy CRM system to new technology (PHP Symfony, later TypeScript with Nest.js). Creating integrations with external customer support ticketing system and Google services.

PHP 8.xSymfony 7TypeScriptNest.jsMySQLMongoDBRabbitMQSQSAPI PlatformPHPUnitDockerGitLab CIAWSTerraform

PHP Developer

—Satisfly

Dec 2021 — Dec 2022

Working on creating data funnel for ecommerce client. The integrator helped clients with data exchange between ecommerce systems such as Baselinker, Idosell and Magento.

PHP 8.xSymfony 5PostgreSQLRedisRabbitMQAPI PlatformPHPUnitDockerGitLab CI

Software Developer

—Questy

May 2021 — Dec 2021

Implementation and maintenance of dedicated CRM system for clients. System modifications according to client requirements, integrations with external ERP systems.

PHP 7.xSymfony 1PostgreSQLRedisDockerGitLab CICRM Systems