Software Engineer

Q Tech
Barcelona, Spain
1 day ago
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Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours

Tech stack

Amazon Web Services PostgreSQL OAuth Ruby on Rails Redis Systems Integration TypeScript ReactJS Backend Kubernetes

Job description

  • 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.
  • Drive system reliability, performance and maintainability.
  • Engage in architecture discussions with wider engineering leadership.

Ruby on Rails · PostgreSQL · Redis · AWS · Kubernetes

(Some TypeScript & React exposure, but backend is the core focus)

Requirements

We are seeking experienced developers who would like to work in Ruby on Rails (not previous experience required)., 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.

Benefits & conditions

  • ~65 engineers globally, distributed across North America
  • High ownership, low bureaucracy, real-world impact
  • Opportunity to help shape a brand-new Barcelona engineering hub
  • Permanent contract
  • Equity package included (4-year vesting, 1-year cliff)
  • 23 days of paid annual leave
  • Private health insurance with Adeslas (family included)
  • €50/month public transport allowance
  • €60/month gym & wellness allowance
  • Collaboration with distributed teams across Europe and North America

About the company

Q-tech is colaborating with a fast-growing international SaaS 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.

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Apply on www.jobleads.com
Prepare application

Good distractions

Talks and stories from around this role — technically off-topic, practically not.

1:38 min

Transitioning into backend engineering from web development

Stefan Lingler Stefan Lingler +1 · Coffee With Developers

2:49 min

Adopting OAuth best practices and removing outdated grants

Alexander Schwartz Alexander Schwartz · World Congress 2026 Europe

3:55 min

Demonstrating semantic routing thresholds with the Redis vector library

1:21 min

Exploring the target application for front end tests

Anna Mcdougall · JS Congress

1:47 min

Transitioning from internships to full-stack backend engineering

Nicolas Haunold Nicolas Haunold +1 · Coffee With Developers

1:34 min

Analyzing vulnerabilities in standard OAuth 2.0 authorization flows

Alexander Schwartz Alexander Schwartz · World Congress 2026 Europe

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