Senior Ruby on Rails Backend Engineer — Hybrid Role

Is this you? Titan Operating System S.L. (Titan OS), the Barcelona-based technology, entertainment, and advertising company, is looking for you!Is this you? Titan Operating System S.L. (Titan OS), the Barcelona-based technology, entertainment, and advertising company, is looking for you! At TitanOS, we live by three core values:Make things happen - We take...

TeamSystem | Quipu is seeking a Senior Backend Developer (Ruby on Rails) to strengthen our SaaS platform used by thousands of freelancers, SMEs, and accounting firms across Spain. You will build backend solutions, maintain and improve features, and contribute to an agile lifecycle with a cross-functional team in a hybrid Madrid-based model. Join a growing...

Quipu, part of TeamSystem, is hiring a Senior Backend Developer (Ruby on Rails) to evolve our SaaS platform used by thousands of customers daily. You will join a skilled Product and Technology team building backend features, improving scalability, and delivering robust services in a fast-paced, collaborative environment.You will work across the stack with...

Senior Backend Developer (Ruby on Rails) Madrid, A Coruña, Salamanca, Barcelona, Ciudad Real | Hybrid Model | Full-time | Permanent Contract At TeamSystem | Quipu, we help thousands of freelancers, SMEs, and accounting firms across Spain manage their businesses simply and efficiently through an intuitive and reliable SaaS platform. Since October 2025, Quipu...

Senior Backend Developer (Ruby on Rails) Madrid, A Coruña, Salamanca, Barcelona, Ciudad Real | Hybrid Model | Full-time | Permanent Contract At Team System | Quipu, we help thousands of freelancers, SMEs, and accounting firms across Spain manage their businesses simply and efficiently through an intuitive and reliable Saa S platform. Since October 2025,...

Tamarind Intelligence in Barcelona, Spain, or fully remote within a CET time window, seeks a backend engineer to own a critical production system, help shape the road‑map, and experiment with new ideas. You will work on a high‑impact product with strong ownership and cross‑team collaboration. You will implement code, review, test, and diagnose complex...

TeamSystem | Quipu is seeking a Senior Backend Developer (Ruby on Rails) to strengthen our SaaS platform used by thousands of freelancers, SMEs, and accounting firms across Spain. You will build backend solutions, maintain and improve features, and contribute to an agile lifecycle with a cross-functional team in a hybrid Madrid-based model.Join a growing...

Senior Backend Developer (Ruby on Rails) Madrid, A Coruña, Salamanca, Barcelona, Ciudad Real | Hybrid Model | Full-time | Permanent Contract At TeamSystem | Quipu, we help thousands of freelancers, SMEs, and accounting firms across Spain manage their businesses simply and efficiently through an intuitive and reliable SaaS platform. Since October 2025, Quipu...

We are working with a product‑led company looking to hire aSenior Rails Developerto 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...