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.
The Role
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.
Responsibilities
- 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
Requirements
- 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
Nice to Have
- Kubernetes and Helm experience
- Queue-based or asynchronous systems
- Non-relational databases
- Observability tools (Datadog, Grafana)