Hubstaff is looking for a Senior Rails Back-End Developer to focus on architecting, scaling, and optimizing the back-end systems that power our SaaS platform. In this role, you will be responsible for designing high-volume APIs, optimizing database performance, and ensuring system reliability.
What You'll Do
- Design, build, and maintain services and features using Ruby on Rails.
- Architect scalable systems that handle millions of records and high concurrency.
- Identify and resolve performance bottlenecks across database, application, and infrastructure.
- Implement background job processing with Sidekiq and Redis.
- Write automated tests using RSpec.
- Collaborate with the Engineering Manager and cross-functional teams to shape technical direction.
- Contribute to code reviews, documentation, and planning sessions.
- Ensure high reliability and scalability of core services.
What We're Looking For
- 7+ years of professional development experience.
- 5+ years building and maintaining production Rails applications.
- Strong database expertise (PostgreSQL or MySQL), including schema design and query optimization.
- Experience with background job frameworks and async processing.
- Proven experience designing systems for performance and scale.
- Solid understanding of modern architectural patterns (SOA, event sourcing).
- Experience working asynchronously in fully remote teams.
- A history of multi-year tenure in recent roles.
Nice to Have
- Working knowledge of JavaScript.
- Experience with message queues (Kafka, RabbitMQ) or search engines (Elasticsearch, Solr).
- Familiarity with Docker, Kubernetes, AWS/GCP.
- Performance tuning in high-traffic applications.
Technical Stack
- Ruby on Rails, PostgreSQL, MySQL, Sidekiq, Redis, RSpec
- JavaScript, Kafka, RabbitMQ, Elasticsearch, Solr
- Docker, Kubernetes, AWS, GCP
Team & Environment
Join the engineering team and collaborate with the Engineering Manager and cross-functional teams.
Benefits & Compensation
- Competitive pay for top talent.
Work Mode
This is a global, fully remote position open to candidates in Argentina, Brazil, Poland, Romania, Spain, and Portugal. The culture is remote-first, built on trust, autonomy, and async collaboration.
Hubstaff is proud to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all team members.
