Q-tech is colaborating with a fast-growing international Saa S company that is opening a new engineering hub in Barcelona and is looking for a Senior Software Engineer. This is a backend-focused role with high ownership and real impact, working on Identity & Access Management, APIs and integrations for a platform used by some of the most demanding customers in the private capital space.

Antes de solicitar este puesto, por favor, lea la siguiente información sobre esta oportunidad que encontrará a continuación.

We are seeking experienced developers who would like to work in Ruby on Rails (not previous experience required). YOU MUST HAVE: Expertise in OAuth 2.0 What you'll work on Design, build and iterate on backend-heavy systems across IAM, APIs, internal and external integrations, ensuring security, privacy and reliability at scale. Provide security leadership across the whole application, resolving issues that affect the product as a whole.

Lead technical decision-making when designing new features, refactors or integrations where security is a critical factor. Diagnose and resolve critical issues, such as customers being unable to log in due to authorization failures. Deliver features end-to-end, from design through deployment and monitoring.



Mentor peers. Drive system reliability, performance and maintainability.

Engage in architecture discussions with wider engineering leadership. xqbhyrx Tech stack Ruby on Rails · Postgre SQL · Redis · AWS · Kubernetes(Some Type Script & React exposure, but backend is the core focus) The team~65 engineers globally, distributed across North America Strong product-driven engineering culture High ownership, low bureaucracy, real-world impact Opportunity to help shape a brand-new Barcelona engineering hub Location & setup Permanent contract Hybrid model: 3 days per week remote Adaptable working hours Equity package included (4-year vesting, 1-year cliff)23 days of paid annual leave Private health insurance with Adeslas (family included)€50/month phone & home internet allowance€50/month public transport allowance€60/month gym & wellness allowance€500/year professional development budget Collaboration with distributed teams across Europe and North America If you're a senior backend engineer who enjoys building secure, scalable systems and wants to be involved early in a new team, this could be a great next step.

📌 Senior software engineer (España)
🏢 Q-Tech
📍 España