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
* Experience working with large datasets and third‐party integrations Nice to Have
* Experience with Redis, PostgreSQL, Sidekiq, Hotwire
* 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
* 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.