Senior Software Engineer - Ruby on Rails (Product Expert)

Company Overview

Addooco, established in 2008, is a managed IT, cloud, and communications solutions provider. We specialize in enterprise-grade services for businesses of all sizes across the UK and internationally, utilizing proactive management and in-house solutions delivered via our own datacenter infrastructure.

Summary

We are seeking a highly skilled Senior Software Engineer specializing in Ruby on Rails to join our dynamic team. This role focuses on technical leadership, designing, and developing innovative software solutions, ensuring top-tier IT service delivery for our clients.

Required Skills & Experience

Essential:

• 5+ years professional software engineering experience
• 3+ years Ruby on Rails experience (Rails 7-8 preferred)
• Strong PostgreSQL experience
• Geospatial data experience (PostGIS, RGeo, or similar geospatial libraries)
• Multi-tenancy architecture and database sharding
• Background job processing (Sidekiq, Resque, or similar)
• RESTful API design and development
• Payment gateway integration (Stripe, Adyen, or similar)
• Git version control and GitHub workflows
• Automated testing experience (Minitest, RSpec, or similar)
• Experience with WebSockets and real-time features (ActionCable or similar)

Highly Desirable:

• Laravel/PHP experience (for cross-team support)
• React or JavaScript experience (for full-stack work)
• Rails 8 specific features (Solid Cache, Solid Queue, etc.)
• Cloud services such as S3, SES, EC2, RDS etc.
• Twilio or other SMS/communication APIs
• Experience taking over codebases from external teams
• Previous experience in transport/logistics/dispatch systems

Responsibilities

Technical Leadership:

• Act as a product expert for ongoing team projects
• Provide technical guidance and mentoring to mid-level engineers
• Review code and provide constructive feedback
• Make architectural decisions for the Ruby backend
• Establish coding standards and best practices for the team

Development:

• Take ownership of an existing system from an external vendor during a handover period
• Develop new features for the system
• Maintain and improve existing functionality
• Optimise geospatial algorithms and database queries
• Integrate third-party APIs (payment providers, SMS, etc.)
• Write comprehensive automated tests (unit, feature)

Operations:

• Participate in 24/7 on-call rotation for system downtime events
• Investigate and resolve production issues
• Monitor system performance and implement improvements
• Collaborate with DevOps on deployment and infrastructure

Collaboration:

• Work directly with stakeholders to understand requirements
• Coordinate with frontend team on API contracts
• Provide input to project planning and estimation
• Support other teams when cross-functional needs arise

Knowledge Transfer:

• Build comprehensive understanding of existing system during handover
• Document complex systems and architectural decisions
• Share knowledge with mid-level team members
• Prepare the team to mentor junior engineers in the future

Key Success Metrics

• Successfully complete handover and take full ownership of existing system from external vendor within 3 months
• Maintain 24/7 system uptime (99%+ availability)
• Deliver new features while maintaining code quality (test coverage >90%)
• Build effective team processes and establish technical standards
• Develop mid-level engineers' capabilities through mentoring

Job Details: Full-time, Remote position. Pay: £55,000.00-£65,000.00 per year.

Benefits:

• Additional leave
• Company events
• Company pension
• Cycle to work scheme
• Free parking
• On-site parking
• Referral programme
• Work from home