Senior Ruby on Rails Engineer

Role: Senior Ruby on Rails Engineer

Location: Remote anywhere in Europe

Setup: B2B or perm in Spain

We are working with a product-led company looking to hire a Senior Rails Developer to play a key role in scaling and evolving their backend systems. This is a hands-on role with real ownership and impact across engineering and product.

The Role:

As a Senior Ruby on Rails Developer, you’ll be instrumental in building and maintaining core systems that support a high-scale, always-on platform.

You’ll be responsible for:

• Developing and maintaining backend systems and internal tools
• Translating business goals into scalable technical solutions
• Monitoring, troubleshooting, and improving live systems (24/7 environment)
• Building and enhancing CI/CD pipelines for smoother deployments
• Driving improvements in architecture, performance, and scalability
• Integrating and maintaining third-party APIs

What We’re Looking For:

• 10+ years of commercial experience with Ruby on Rails
• Experience working on high-scale, production systems
• Strong understanding of software design principles & best practices
• Proven ability to think strategically and align tech with business goals
• Ownership mindset with a proactive, problem-solving approach
• Strong communication skills (English)
• Experience working with large datasets and third-party integrations

Nice to Have:

• Experience with Redis, PostgreSQL, Sidekiq, Hotwire
• Exposure to modern JavaScript frameworks
• Experience integrating payment providers
• Knowledge of mobile ad monetisation ecosystems
• Strong background in unit & integration testing

Why Join?

• Work on a high-impact, scalable product
• Join a team that values ownership and engineering excellence
• Opportunity to influence architecture and technical direction
• Fast-paced environment with real product visibility

Benefits:

• Up to €80k basic (this can be B2B in Europe)
• High flexibility, full-remote in Europe
• High degree of ownership and autonomy
• Being part of a small team of highly motivated and talented professionals

Please apply with an updated CV with contact details to be considered.