Backend Engineer

• Lead and mentor a team of mid/senior backend engineers (4–5), including 1:1s, feedback, and performance management
• Translate product and business goals into clear technical roadmaps, sprint plans, and backend priorities
• Own the backend architecture and technical vision for mobile-first, consumer-facing apps used by tens of thousands of daily active users
• Drive and oversee implementation of new features for our mobile apps, working closely with iOS/Android, Product, Data, DevOps and Trust & Safety teams
• Take key architectural decisions around scalability, performance, reliability, data flows, and infrastructure on AWS
• Modernise and improve a large, Ruby on Rails codebase (including version upgrades and refactoring legacy areas) while keeping systems stable in production
• Identify and resolve performance bottlenecks, improve API speed and reliability, and design effective caching and database strategies
• Establish and continuously improve engineering processes, coding standards, code review practices, and deployment/CI pipelines
• Create and maintain clear technical documentation and design specs for backend systems and major initiatives
• Handle prioritisation and trade-offs in a fast-moving environment with changing quarterly priorities
• Be hands-on with coding and code reviews, especially for complex or high-impact areas, and step in during critical production incidents

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Lead Backend Engineer, Ruby On Rails