Open to opportunities

Kaito User

@kaitouser

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Ruby on Rails Developer with a passion for impactful projects.

Poland

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What I'm looking for

I am looking for a collaborative environment where I can grow, contribute to impactful projects, and deepen my expertise as a developer.

I'm a dedicated Ruby on Rails Developer with over a year of enterprise experience, specializing in backend development. My journey has been marked by a commitment to writing clean, maintainable, and scalable code, with a strong focus on architecture and readability. I thrive in product-oriented environments, where I can align my work with business goals and user needs.

Throughout my career, I have contributed to various impactful projects, including an internal automation platform for podcast creators and an online medical appointment system. My responsibilities have ranged from developing backend features and implementing REST APIs to debugging complex issues and optimizing database queries. I take pride in my ability to learn quickly and adapt to new technologies, ensuring that I remain at the forefront of industry best practices.

As I continue to grow as a developer, I am eager to deepen my expertise and become a dependable part of a forward-thinking team. I believe in the power of collaboration and am always looking for opportunities to contribute to meaningful projects that make a difference.

Experience

Work history, roles, and key accomplishments

Junior Developer

Smart Scooter Rental Platform

Jan 2025 - Present (6 months)

Supported vehicle listing and availability system with geolocation filters, and dynamic reservation status updates with ActionCable (WebSockets). Created a custom pricing engine based on duration, distance, and scooter type, and styled the frontend with Tailwind CSS and added interactivity via Turbo.

Ruby on Rails PostgreSQL Redis Sidekiq WebSockets ActionCable Tailwind RSpec Pry Rails

Junior Developer

Online Medical Appointment Platform

May 2024 - Present (1 year 2 months)

Supported appointment flow with time slot validations, availability calendar, and rescheduling logic, and integrated Devise for patient/doctor authentication and Pundit for access control. Used Sidekiq + Redis for background jobs like email confirmations and report generation, and enabled file uploads using ActiveStorage.

Active Storage Ruby on Rails PostgreSQL Redis Sidekiq REST Devise ActiveStorage RSpec

Junior Developer

Internal Automation Platform for Podcast Creators

Dec 2023 - Present (1 year 7 months)

Developed backend features for scheduling and publishing episodes via REST API, and implemented logic for parsing and syncing metadata from Google APIs and RSS feeds. Built and maintained admin interfaces in Rails for managing episode releases, and updated React components to reflect new analytics and scheduling capabilities.

Ruby on Rails PostgreSQL Git REST SQL Sidekiq React

Education

Degrees, certifications, and relevant coursework

ITS (Information Technology Software) College of Business and Law

Diploma, Information Technology Software

Completed a comprehensive program focusing on Information Technology Software. Gained foundational knowledge and practical skills in various aspects of IT and software development.

RubyRush by GoodProgrammer

Certificate, Ruby Fundamentals

Completed a course focused on Ruby fundamentals, gaining essential knowledge in the language. This program provided a strong base for further development in Ruby.

Everyday Testing with RSpec

Certificate, Software Testing

Completed a practical course on RSpec testing, learning how to apply testing methodologies in real-world scenarios. Developed skills in writing effective tests for software applications.

Introduction to Git course by Hexlet

Certificate, Version Control

Completed an introductory course on Git, covering the fundamentals of version control. Gained proficiency in using Git for managing code repositories and collaborating on projects.