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# Ruby Engineer

- **Company:** Búsqueda Avanzada
- **Location:** Barcelona, Spain
- **Salary:** €60,000.0 - €90,000.0
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Code Review, Information Engineering, Machine Learning, Performance Tuning, Ruby on Rails, Ruby, Software Engineering, Data Streaming, Backend
- **Published:** September 19, 2026
- **Apply:** https://www.adzuna.es/contact-us.html

## About the Role

Core Requirements

 + 5+ years of professional software engineering experience
 + Recent, hands-on experience developing with Ruby on Rails
 + Experience building and maintaining high-traffic, production-grade applications
 + Background working in startups, scale-ups, or other rapid-growth environments
 + Strong English communication skills (written & spoken)
 + High ownership mentality-you take responsibility for outcomes, not just tasks
 + Ability to balance speed with thoughtful engineering craftsmanship
 + Strong product mindset with a focus on exceptional user experience
 + Comfortable working on platforms that involve uncensored model-based content
Nice-to-Have Experience

 + Exposure to data engineering, machine learning, or generative AI systems
 + Experience collaborating across globally distributed teams

## Description

Our client is scaling at an extraordinary pace and is building the next generation of AI-powered consumer technology. To support an aggressive product roadmap and massive user growth, they are adding experienced Senior Backend Engineers to their engineering team.
This is a highly impactful role where you'll contribute directly to system design, product direction, and large-scale platform performance-all within a fast-moving, innovation-driven environment.
You'll collaborate closely with product leadership, engineering, and executive stakeholders to bring bold ideas to life.

What You'll Be Doing

 + Partner with Product Managers to translate product requirements into scalable technical solutions
 + Design backend architectures, integrations, and data flows
 + Own features end-to-end: development, testing, deployment, and maintenance
 + Review code, participate in pull requests, and raise engineering quality standards
 + Contribute to technical strategy, experimentation, and performance optimization
 + Work closely with a distributed team including platform engineers, SREs, and data specialists
While full-stack experience is welcomed, this role is heavily weighted toward deep Ruby on Rails backend expertise.


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