Hello, I'm

Szymon Chodzidło

Full-Stack Developer focused on product outcomes, system design, and scalable solutions. I take ownership of features end-to-end with an emphasis on user impact and fast delivery.

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/ Career

A brief overview of my career

Dec 2024 - Apr 2026

Senior Software Engineer

j-labs sp. z o.o.

Delivered new product features, improved system reliability, expanded test coverage, and modernized legacy code through ongoing refactoring and technical debt reduction.

Ruby on Rails PostgreSQL GraphQL REST API Sidekiq

Jul 2022 - Nov 2024

Senior Full-Stack Developer

Railwaymen sp. z o.o.

Led development of scalable cloud applications, defined system architecture, mentored engineers, and delivered reliable full-stack solutions using Ruby on Rails, Vue.js, TypeScript, and cloud technologies.

Ruby on Rails Vue.js Cloud Architecture Technical Leadership

Aug 2019 - Jun 2022

Full-Stack Developer

Railwaymen sp. z o.o.

Delivered software solutions, improving performance, maintainability, and code quality while supporting junior developers through mentoring and code reviews.

Ruby on Rails React System Performance Code Review

Jun 2018 - Jul 2019

Junior Ruby on Rails Developer

Railwaymen sp. z o.o.

Implemented features and fixed bugs under senior guidance, improved reliability through automated tests, and contributed to code reviews and collaborative web application development.

Ruby on Rails TypeScript Automated Testing Team Collaboration

Dec 2024 - Apr 2026

Senior Software Engineer

j-labs sp. z o.o.

Delivered new product features, improved system reliability, expanded test coverage, and modernized legacy code through ongoing refactoring and technical debt reduction.

Ruby on Rails PostgreSQL GraphQL REST API Sidekiq

Jul 2022 - Nov 2024

Senior Full-Stack Developer

Railwaymen sp. z o.o.

Led development of scalable cloud applications, defined system architecture, mentored engineers, and delivered reliable full-stack solutions using Ruby on Rails, Vue.js, TypeScript, and cloud technologies.

Ruby on Rails Vue.js Cloud Architecture Technical Leadership

Aug 2019 - Jun 2022

Full-Stack Developer

Railwaymen sp. z o.o.

Delivered software solutions, improving performance, maintainability, and code quality while supporting junior developers through mentoring and code reviews.

Ruby on Rails React System Performance Code Review

Jun 2018 - Jul 2019

Junior Ruby on Rails Developer

Railwaymen sp. z o.o.

Implemented features and fixed bugs under senior guidance, improved reliability through automated tests, and contributed to code reviews and collaborative web application development.

Ruby on Rails TypeScript Automated Testing Team Collaboration

/ Tech Stack

Breakdown of my technical skills, categorized by domain and proficiency

Expert

Proficient

Beginner

Backend

Ruby on Rails

Ruby

Python

Django

Go

Rust

Frontend

Vue.js

React

Nuxt

Tailwind CSS

Three.js

Database

PostgreSQL

Redis

Supabase

Mongo

DevOps

Docker

RabbitMQ

Kubernetes

Terrform

AWS

/ Contact Me

Feel free to reach out. I'm always open to discussing new projects and opportunities.