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Senior Backend Engineer (Ruby on Rails)

Barcelona, Catalonia, Spain💼 Full-time🗓 2026-07-01 → 2026-07-31

Core

Designing, developing, and maintaining scalable backend infrastructure and APIs for industry-leading entertainment and advertising applications.

Role type

Senior Backend Engineer (Ruby on Rails)

Builds

Scalable backend services, APIs, and database architectures for CTV and advertising products.

Domain

Technology, Entertainment, Advertising, Cloud Infrastructure

Deliverable

production ML models | product features | infrastructure

Required skills

Ruby on Rails, SQL and NoSQL database design, RESTful API development, Cloud platforms (AWS/GCP/Azure), Containerization (Docker/Kubernetes), Performance optimization, Security implementation, System monitoring and troubleshooting, Code review and process improvement

Preferred skills

Bachelor's degree in Computer Science or related field

Technologies

Ruby on Rails, SQL, NoSQL, AWS, GCP, Azure, Docker, Kubernetes

Responsibilities

Designing and developing highly scalable backend services and APIs; Building and maintaining databases; Collaborating with front-end, DevOps, and product teams; Optimizing performance and reliability of server-side code; Ensuring security of backend systems; Monitoring and troubleshooting production systems; Participating in code reviews

Seniority

Senior, hands-on IC

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