Senior Software Engineer

Senior Software Engineer (Product)

Location

Belfast, Hybrid; Belfast, Remote; Ireland; United Kingdom

Employment Type

Full time

Engineering

You’ll join a small, passionate team of Rubyists, taking ownership of complex projects from concept to deployment. Alongside writing maintainable, well-tested code, you’ll help define technical direction, guide architectural decisions, and mentor engineers as we scale.

Our work spans diverse domains including billing, CRM to public APIs, reporting, integrations, and internal tooling

You’ll have the freedom to specialise or lead initiatives in the areas that interest you most. We’re pragmatic, not dogmatic — we balance moving fast with building for the long term.

 

Your Responsibilities

• Lead the design and development of complex features from concept to deployment.

• Collaborate with product and stakeholders to define scope, refine requirements, and ensure solutions meet business goals.

• Make sound architectural decisions to keep our Rails app maintainable, performant, and scalable.

• Dedicate time (at least 20%) to improving stability, performance, and developer experience.

• Maintain a strong automated test suite so we can confidently deploy to production multiple times per day.

• Proactively monitor, investigate, and resolve production issues, driving preventative improvements.

• Mentor and support engineers through code reviews, pairing, and knowledge sharing.

   

Our Technology Stack

We take a majestic monolith approach — keeping our Rails app clean, cohesive, and aligned with Ruby community best practices.

• Backend: Rails 8, PostgreSQL, Redis, Sidekiq, TimescaleDB

• Frontend: Turbo 8, targeted React for richer UI, ViewComponents, Sass, BEM methodology

• Testing: Minitest, Capybara, Playwright

• Payments: Stripe Connect and Billing

• Deployment: GitHub Actions, Heroku

 

What We’re Looking For

• Proven track record designing, building, and scaling production Rails applications.

• Strong command of Rails fundamentals — ActiveRecord, background jobs, request/response cycle — and how to apply them effectively.

• Experience architecting maintainable systems that balance speed of delivery with long-term sustainability.

• Comfortable working across the stack, including frontend technologies (JavaScript, CSS).

• Skilled at using modern LLM-powered tools to accelerate work and explore solutions — with the judgement to know when to rely on your own expertise.

• Strong testing mindset, with hands-on experience in Minitest or RSpec.

• Confident debugging and resolving complex production issues.

• Skilled mentor with the ability to grow and support other engineers.

• Clear communicator, able to articulate technical challenges, trade-offs, and decisions.

 

Benefits & Compensation

• Competitive annual salary – starting from £75k DoE

• Remote Work Option – Can be fully remote within the UK or EU only. Candidates must be based in either the United Kingdom or the European Union

• Office Access – Use of office in Belfast for those who live locally

• Health & wellness – Private health insurance for you and your family

• Retirement – Company pension plan

• Leave – 35 days paid annual leave

• Professional growth - L&D support

• Share options

• WFH budget

• Company-wide social events