Senior Full-Stack Developer with Backend focus (Ruby on Rails)

Job Overview

We’re looking for a Senior Software Engineer - Backend with expertise in Ruby on Rails to lead the development and maintenance of backend systems. Collaborating closely with cross-functional teams, you’ll shape the backbone of our platform, translating customer needs into impactful features.

Location: Berlin, Germany or Full-Remote within the EU (CET ±3)

Key Responsibilities

• Actively design, develop, and maintain our Ruby on Rails backend, ensuring scalability and reliability.
• Work closely with  CTO, Product Lead, and Sustainability Lead to turn customer requirements into innovative features.
• Conduct pair programming, perform code reviews, and participate in technical spikes to uphold clean code principles.
• Engage in SCRUM-based two-week sprints, contributing to the team’s focus on delivering measurable user value.
• Optimize workflows through automation, leveraging tools like GitHub Actions for CI/CD pipelines and Heroku for hosting.

Company Development Approach

• Emphasizing growth, agile development, and breaking down features into manageable deliverables.
• Following clean code principles, prioritize automated testing, and maintain a strong focus on managing technical debt.
• A three-step deployment process ensures every pull request is tested in a dedicated environment before production.
• Cloud services monitor platform stability and performance to deliver a seamless user experience.

Required Skills and Qualifications

• Located within CET ±3, with a valid work permit.
• 5+ years in software development with excellent knowledge of a web framework (Ruby on Rails preferred).
• Proficiency in Ruby, Rspec, Postgres, Redis, Docker, Heroku, GitHub, and GitHub Actions.
• Fluent in English (C1 level); German is a plus.
• Hands-on approach with an agile mindset, driven by purpose and customer-centricity.

Preferred:

• Degree in Computer Science (Bachelor, Master, or Doctorate).
• Experience in early-stage startups or working on sustainability-focused projects.

Company Tech Stack

• Backend: Ruby, Ruby on Rails, Rspec, Postgres, Redis, Docker.
• Frontend: TypeScript, Vue.js 3, Jest, Cypress, Tailwind.
• Hosting & Automation: Heroku, GitHub, GitHub Actions, and LLMs.

Benefits

• Purpose: Be part of a mission to reduce CO2 emissions and combat climate change.
• Flexibility: Work in a collaborative, remote-friendly environment.
• Growth: Access clear growth plans, professional development opportunities, and support for problem-solving.
• Fair Compensation: Receive competitive pay aligned with your experience and skills.
• Challenges: Solve complex problems, manage large datasets, and enhance the user experience with innovative features.

If you are ready to take on a challenging role at the forefront of technological innovation, and contribute to our company's success, we invite you to apply. Click 'Apply Now' to submit your CV and join a talented team.

Our Commitment to Diversity and Inclusion

We are proud to be an equal opportunity employer committed to fostering an inclusive work environment. We welcome candidates from all backgrounds, ensuring that each team member is supported and empowered to contribute their unique talents.

About Our Company

Become part of our esteemed company, renowned for its innovative consumer technology solutions. We value integrity, collaboration, and excellence, offering a work environment where each team member can thrive and make a tangible impact.