Senior Fullstack Ruby on Rails Developer - 34952

Senior Full Stack Ruby on Rails Developer (12+ years) specializing in scalable B2B enterprise systems and high‑security SaaS solutions.

Proven Track Record:

• Enterprise: Delivering complex B2B ecosystems (Europlatform / Neubloc) and ESG reporting platforms (Diaphane Software).
• Process & Agile: Extensive experience in Scrum methodology within distributed, remote-first teams, emphasizing effective asynchronous communication and strong testing practices (RSpec/Minitest).
• Tech Stack: Expert in Rails 8.1, Hotwire (Turbo/Stimulus), Solid Queue, Kamal, PostgreSQL/SQLite, and AES-256 data protection, Sentry,
• Storage: I have also worked with S3‑compatible storage (MinIO), which allows me to easily operate in environments based on AWS S3.

SIDE PROJECTS:

Kung Fu Academy Web App

Technologies: Ruby on Rails 8, SQLite, Bootstrap 5.3, Hotwire, Stimulus, Solid Queue, Kamal

A personal project for managing content and announcements for a traditional Wing Chun Kung Fu school. Early-stage development; deployed on Hetzner. Demo available on request. Implemented AES‑256 encrypted HLS video streaming with segmented delivery, dynamic resolution selection for landscape and portrait videos, and a custom MediaSource player supporting scalable playback.

PUBLIC REPOSITORIES:

Exercism Ruby Solutions - GitHub Repository

• Public collection of Ruby exercises completed on exercism.org. Demonstrates clean, idiomatic Ruby code, problem-solving skills, and testing practices.

SKILLS:

• Methodologies: Working in SCRUM, comfortable with remote collaboration tools (Slack, Jira, GitHub, GitLab)
• Backend: Ruby on Rails 7/8 (API development, system & unit tests), Sidekiq, Redis, SolidQueue, Experience working with enterprise-level Ruby on Rails applications with integrations and background jobs
• Frontend: Twitter Bootstrap 5.3, Tailwind CSS, stimulus with turbo hotwire, swagger, TypeScript (sometimes used in past projects), AngularJS 1.x (past projects)
• Databases & Storage: PostgreSQL, MySQL, Certificate database (SQL), Experience with S3-compatible object storage (MinIO)
• DevOps & CI/CD: Docker (Dockerfile, containerization), Familiar with containerized deployments (Docker), GitHub Actions
• Testing: RSpec (unit and request specs), Minitest (ActiveSupport::TestCase with fixtures), system tests (Capybara, Selenium), FactoryBot, manual and automated testing in Ruby on Rails
• Other Technologies: C++ (5 years of project-based learning and personal development; Qt, Boost, wxWidgets) - GitHub Repository, Rust and Crystal - self-directed exploration and practice (~1 year), including exercises and small projects, Polona2 - (Python/Django backend, AngularJS 1.x frontend) - provided ongoing technical support and handled small to medium devops tasks, while participating in development of features as separate milestone-based work, over several years.
• Languages & Driving: English: Upper‑Intermediate (B2) – actively improving through daily intensive language coaching focused on professional and technical communication; completed structured courses at Empik School and additional conversation practice on Cambly (certified hours), Driving license: B