Platform Engineer

Platform Engineer responsible for the reliability, scalability, security and developer experience of a large backend platform.

The role

Our client is seeking a Platform Engineer to help operate and evolve a large Ruby on Rails platform supporting bookings, ride matching and payments. You will lead work across reliability, scalability, infrastructure, security, compliance and developer experience.

Responsibilities

• Define and track reliability targets for core platform flows.
• Set up and run incident management and on-call processes, reducing recovery times.
• Improve monitoring and alerting using New Relic and Rollbar.
• Lead architecture decisions for scaling backend systems and services.
• Identify and resolve performance bottlenecks across the application, background jobs and database.
• Improve a large, fast-growing PostgreSQL database through query and index tuning, data-growth planning, archiving, replication, backups, restore drills and large-table changes without downtime.
• Ensure the platform handles peak season and partner growth smoothly.
• Define and evolve the Azure infrastructure strategy while balancing performance, reliability and cost.
• Establish security best practices covering access control, secrets management and build and release pipelines.
• Prepare the platform for PCI, GDPR, SOC 2 and ISO 27001 compliance over time.
• Improve internal tooling, CI/CD and deployment workflows.
• Organise and prioritise technical work with the Product Manager in Jira.
• Write technical documentation, runbooks and development plans, turning them into clear Jira tickets.
• Participate in grooming, planning, kick-off meetings, retrospectives and demos.

What they need from you

• 8+ years of software engineering experience with strong backend and systems experience
• BS or MS degree in Computer Science or a related subject
• Proven experience operating and scaling production systems
• Strong understanding of system design, distributed systems and performance trade-offs
• Strong PostgreSQL skills on large databases
• Experience with Azure or other cloud infrastructure, Docker and infrastructure-as-code
• Experience with Redis, Elasticsearch and a production-scale message broker
• Experience with observability, monitoring and incident management
• Strong security fundamentals, including access control, networking and secrets
• CI/CD experience, including zero-downtime deployments
• Clear written communication and confidence working in Jira
• Hands-on approach, able to move from strategy to implementation