Software Engineer (Ruby on Rails)

Addooco is a managed IT, cloud, and communications solutions provider specializing in enterprise-grade services for businesses of all sizes. Established in 2008, the company operates across the United Kingdom region and beyond, focusing on proactive management and in-house developed solutions delivered through their own datacenter infrastructure.

Summary

We are seeking a highly skilled Senior Software Engineer specialising in Ruby on Rails to join our dynamic team. In this role, you will contribute to designing and developing innovative software solutions that support our clients’ needs and align with our mission to deliver top-tier IT services.

Required skills & experience

2-5 years professional software engineering experience

2+ years Ruby on Rails experience

PostgreSQL or similar relational database experience

Understanding of MVC architecture

Experience writing automated tests

Ability to work independently and as part of a team

Highly desirable

Background job processing (Sidekiq)

Payment gateway integration experience

Multi-tenancy or multi-database architecture

Cloud services such as S3, SES, EC2, RDS etc.

Laravel/PHP experience (for cross-team support)

Experience with real-time features (WebSockets, ActionCable)

Responsibilities

Development

Develop new features for existing system under guidance of Senior Software Engineer

Maintain and improve existing functionality

Write clean, well-tested code following team standards

Participate in code reviews

Fix bugs and resolve technical issues

Implement API endpoints and database migrations

Learning and growth

Build deep understanding of existing codebase during handover

Learn geospatial algorithms and PostGIS functionality

Develop expertise in multi-tenancy architecture

Grow technical skills through mentorship from Senior Software Engineer

Work towards becoming Product Expert in specialised areas

Operations

Participate in 24/7 on‑call rotation for system downtime events

Respond to production issues during on‑call shifts

Monitor system health and report anomalies

Work with Senior Software Engineer on feature planning and estimation

Coordinate with frontend team on API requirements

Communicate progress and blockers effectively

Support team members through knowledge sharing

Key Success Metrics

Successfully learn existing codebase and contribute independently within 2-3 months

Deliver features with minimal rework and high code quality

Maintain test coverage standards (>90%)

Effectively handle on‑call responsibilities

Demonstrate growth in technical capabilities over time

Company Benefits

Referral programme

Free parking

Additional leave

Company pension

Cycle to work scheme

Work from home

Company events

On‑site parking

Seniority Level

Mid‑Senior level

Employment type

Full‑time

Job function

Information Technology and Engineering

Industry

IT Services and IT Consulting

Location: Harrow, England, United Kingdom

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