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Urgent! Senior Rails Full-Stack Developer Job Opening In Madrid – Now Hiring Hubstaff

Senior Rails Full Stack Developer



Job description

Overview

We’re hiring a Senior Rails Full-Stack Developer to join our engineering team.

This is a full-time (40 hrs/week), remote position with long-term potential.

You’ll design and scale systems that power a high-performance, globally distributed SaaS platform.

You’ll extend and refine our custom design system built on Hotwire and Tailwind, ensuring a consistent and scalable UI foundation across the product.

You’ll collaborate closely with our Engineering Manager, frontend developers, and product stakeholders to shape technical direction and deliver elegant, performant experiences.

We value stability and deep product knowledge and are looking for engineers who see themselves growing with a product and team for years, not just their next short-term contract.

Location: Remote.

Compensation & Contract Type: $45–50 USD/hour, ~40 hours/week.

Inclusion at Hubstaff: Hubstaff is proud to be an equal opportunity employer.

We celebrate diversity and are committed to creating an inclusive environment for all team members, regardless of background, identity, or lived experience.

What You’ll Do

Design, build, and maintain services and features using Ruby on Rails.

Architect scalable systems that handle large datasets and high request volumes.

Extend and evolve our custom design system (Hotwire + Tailwind) to support new components, patterns, and accessibility standards.

Collaborate with the Engineering Manager and product team to define priorities and roadmap.

Identify and resolve performance bottlenecks across database, application, and frontend rendering.

Implement background job processing (Sidekiq, Redis).

Write automated tests (RSpec, system tests, Stimulus/Hotwire test helpers).

Participate in code reviews, documentation, and planning sessions.

Balance technical excellence with timely delivery.

What You Should Have

7+ years of professional development experience, including 5+ years building and maintaining production Rails applications.

Strong database skills (PostgreSQL or MySQL).

Experience with background job frameworks and async processing.

Proven track record designing systems for scale, performance, and reliability.

Experience working asynchronously in fully remote teams.

A history of multi-year tenure in recent roles.

Nice to Have

Experience with message queues (Kafka, RabbitMQ) or search engines (Elasticsearch, Solr).

Familiarity with Docker, Kubernetes, AWS/GCP.

Performance tuning in high-traffic applications.

Strong eye for design consistency and component-driven development.

Why You’ll Love Working with Us

A remote-first culture built on trust, autonomy, and async collaboration.

Opportunities to work on technically challenging problems at scale.

Long-term product focus — build something you can truly invest in over time.

Competitive pay for top talent.

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Required Skill Profession

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