Backend Engineer, Payments & Rails Platform

Commerce; Greater London; On-site; GBP 70,000 - 110,000; Full time

Job summary

Commerce is seeking a Software Engineer to design, implement, and maintain a Ruby on Rails payments service on the BigCommerce platform. You will ensure production-grade functionality with tests, instrumentation, and documentation, and you will troubleshoot production issues to improve reliability.

You will mentor engineers, review code, and collaborate with product and design to define features while upholding security, performance, and reliability objectives across scalable back-end services.

Qualifications

• 3+ years of backend development with a focus on Ruby on Rails.
• Strong understanding of production-grade systems (logs, traces, metrics, feature flags; live traffic debugging).
• Familiarity with observability tooling: Prometheus, Grafana, Sentry, Lightstep.
• Good understanding of Domain Driven Design.
• Experience integrating with third-party APIs and services with nuanced state transitions (e.g., payment flows).
• Bachelor's degree in CS/EE/SW/CE/MIS or equivalent experience or boot camp.
• Experience with CI/CD and owning tasks across the development cycle.
• Experience building high-performance, scalable, available web services; and knowledge of PHP/Scala is a plus.

Responsibilities

• Design, implement, and maintain features in a Ruby on Rails service for the payments offering on the BigCommerce platform.
• Ensure production-grade functionality with tests, instrumentation, and documentation.
• Troubleshoot production issues and contribute to post-incident reviews to improve reliability.
• Mentor engineers and review code to improve quality and security.
• Collaborate with product and design teams to define feature specifications and timelines.
• Build scalable products using modern tools and focus on testability and extensibility.

Skills

Ruby on Rails

Production systems

Observability tools

Domain Driven Design

Third‑party APIs

CI/CD

High performance

Security

Education

Bachelor's degree in CS/EE/SW/CE/MIS or equivalent

Tools

Prometheus

Grafana

Sentry

Lightstep

PHP

Scala

Job description

Commerce is seeking a Software Engineer to design, implement, and maintain a Ruby on Rails payments service on the BigCommerce platform. You will ensure production-grade functionality with tests, instrumentation, and documentation, and you will troubleshoot production issues to improve reliability.

You will mentor engineers, review code, and collaborate with product and design to define features while upholding security, performance, and reliability objectives across scalable back-end services.