Senior PHP Developer Long-term

We're looking for a Senior PHP Developer to join our Billing Engineering team on a full-time, long-term basis (40 hrs/week). This is an urgent hire -- 1 position available.

You’ll own the maintenance, modernization, and evolution of a core billing platform built on a large-scale PHP monolith. This is a high-traffic, business-critical system running on Kubernetes infrastructure. You’ll troubleshoot production issues, drive performance and scalability improvements, and contribute across the full development lifecycle -- from design through deployment.

• Maintain, modernize, and evolve the billing platform and its components
• Diagnose and resolve high-impact production issues in a high-traffic environment
• Drive improvements in performance, scalability, and reliability
• Produce clear technical documentation for existing and new systems
• Promote knowledge sharing and best practices across the team

• 5+ years of strong professional PHP experience
• Solid foundation in OOP patterns, Clean Code, and SOLID principles
• Experience maintaining and improving complex legacy systems
• Hands-on Docker and AWS experience
• Experience with AI-assisted development tools (Cursor, Claude Code, or similar)
• Business-level English (written and spoken)
• Strong debugging, analytical, and problem-solving skills

• Kubernetes and Helm experience
• Queue-based or asynchronous systems
• Non-relational databases
• Observability tools (Datadog, Grafana)