Senior Rails Full-Stack Developer
Role Overview
As a Senior Rails Full-Stack Developer, you will design, build, and scale systems for a high-performance SaaS platform using Ruby on Rails. You will extend a custom design system with Hotwire and Tailwind, collaborate with the engineering team to shape technical direction, and ensure performance and reliability across the application. This role involves working on backend services, frontend features, and addressing performance bottlenecks in a remote, product-focused environment.
Perks & Benefits
This is a fully remote position with a culture built on trust, autonomy, and asynchronous collaboration, offering competitive pay and long-term growth opportunities. You'll work on technically challenging problems at scale, with a focus on stability and deep product knowledge, and the company values diversity and inclusion. The role is for independent contractors with flexible hours, typically around 40 per week, and hiring is limited to specific countries in Europe and South America.
Full Job Description
Company Overview
At Hubstaff, our mission is to empower people to have their most productive workday. We do this by providing the industry-leading workforce analytics and time tracking platform for remote and distributed teams.
We’ve been fully remote for over a decade—long before it became a trend—and we continue to believe that remote work represents the most significant shift in the modern workplace since the advent of the PC. Our platform helps more than 95,000 businesses track time, manage schedules, and automate payments with transparency and accountability at its core.
We’re a product-led company with a winning culture, strong momentum, and a long-term vision: to become an essential part of every remote company’s tech stack. And we’re just getting started.
The Role
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. Alongside backend services, you’ll be deeply involved in extending and refining 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. We’re looking for engineers who see themselves growing with a product and team for years, not just their next short-term contract.
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.
Build, maintain, and integrate user-facing features with Hotwire, Stimulus, and Turbo, with occasional use of modern JavaScript frameworks when appropriate.
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.
Required: Proficiency in modern frontend development with Hotwire, Tailwind, and at least one major JavaScript framework (React, Vue, or similar).
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.
Location
Hiring in: Argentina, Brazil, Poland, Romania, Spain, Portugal
Compensation & Contract Type
Independent contractor (preferred)
$45–60 USD/hour ($7000-10000 USD/month)
~40 hours/week
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.
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.
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