Senior Backend Engineer (Ruby)
Core
Design and maintain scalable backend services and high-performance APIs for a home energy installation platform serving customers, installers, and operations teams.
Role type
Senior Backend Engineer (Ruby on Rails)
Builds
Robust core services, RESTful APIs, and data models for the Zuno/BOXT home energy platform
Domain
Home energy solutions (boilers, heat pumps, solar, EV chargers) / SaaS
Deliverable
production ML models | product features
Required skills
Ruby, Ruby on Rails, PostgreSQL, RESTful API design, SQL optimization, Redis, Sidekiq/Solid Queue, RSpec, Git, OOAD, SOLID principles
Preferred skills
AWS, Kubernetes, Docker, React/Next.js, TypeScript, New Relic, SRE practices
Technologies
Ruby, Rails, PostgreSQL, Redis, Sidekiq, Solid Queue, RSpec, Git, Next.js, AWS, Kubernetes, Docker, New Relic
Responsibilities
Design and build scalable backend features; Architect and document RESTful APIs; Lead technical discussions on system design and database schema; Optimize performance via SQL tuning and caching; Write clean, testable code adhering to TDD; Own complex features from concept to deployment; Mentor junior engineers; Debug production issues to ensure reliability.
Seniority
Senior, hands-on IC with mentorship responsibilities