Senior Full Stack Developer (Ruby on Rails / React)

Senior Full Stack Developer (Ruby on Rails / React)

We are looking for a Senior Full Stack Developer who wants to have a real impact on the architecture, code quality, and development direction of applications built with Ruby on Rails and React. We work in a small, experienced team where technical decisions are made close to the code 

Tech stack:

• Backend:Ruby on Rails, Ruby, PostgreSQL, Redis, REST, GraphQL

• Frontend:React, JavaScript (SPA)

• Infrastructure:Heroku, GitHub Actions

• Testing:RSpec
  
  

Responsibilities:

• Designing, developing, and maintaining web applications (frontend & backend)

• Working with Ruby on Rails (backend) and React / JavaScript (frontend)

• Independently delivering complex tickets (features, bug fixes, refactoring)

• Taking ownership of selected components and system areas

• Ensuring code quality: automated tests (RSpec), code reviews

• Collaborating with Product Managers and the Customer Success team

• Mentoring junior developers and supporting onboarding

• Participating in 2nd level support (on a rotational basis)

Requirements:

• Minimum 3–5 years of commercial experience as a Full Stack Developer

• Very good knowledge of Ruby on Rails and React

• Experience working with SQL / PostgreSQL

• Comfortable working with Git

• Ability to independently solve problems and make technical decisions

• Experience with code reviews and maintaining high code quality

• Proactive attitude and strong team communication skills

• Knowledge of English sufficient for day-to-day team collaboration B2/C1

• Knowledge of German sufficient for day-to-day team collaboration B2/C1

Nice to have:

• Knowledge of GraphQL, Redis, Sidekiq

• Experience with CI/CD (e.g. GitHub Actions)

• Experience in e-commerce / Shopify / SaaS

Recruitment Process Stages:

• First introductory meeting – HR Screen

• Meeting with lead developers

• Case Study – preparation of a technical task

• Case Study Presentation

• Meeting with the rest of the team

Working conditions:

• Work mode: 100% remote, but we have an office in Bochum and a co-working space in Berlin that can be used if needed.

• Flexible working hours

• Core hours: 9:00–15:00 (CET)

• Daily stand-up: 9:15

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