Senior PHP Engineer
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Job Description
Senior Backend Engineer leading scalable PHP architecture for Airalo, the global eSIM travel platform. Designing distributed systems and advancing service-oriented architecture for millions of travelers.
Responsibilities:
- Lead the design of high-performance distributed systems capable of handling global traffic
- Develop and refine services to improve scalability and efficiency
- Drive the transition toward a service-oriented architecture for modularity and resilience
- Enforce SOLID principles, design patterns, code quality, and testing standards
- Coach mid-level engineers through deep code reviews and technical knowledge sharing
- Identify service bottlenecks and implement advanced caching and database strategies
- Partner with Product and DevOps to translate complex requirements into scalable technical roadmaps
- Participate in a 24/7 on-call rotation supporting global service reliability
Requirements:
- 7+ years of professional backend development experience with deep mastery of PHP
- 4+ years building enterprise-grade applications in Laravel or equivalent senior experience in Symfony
- Mastery of distributed systems, event-driven architecture, and messaging patterns such as SQS or Pub/Sub
- Ability to effectively use AI tools during technical tasks, including prompting, validation, and iteration
- Knowledge of SQL and NoSQL, including performance tuning and handling transactions at scale
- Experience architecting on AWS and managing containerized environments with Docker
- Clean code, automated testing, and CI/CD best practices
- Fluent English and ability to explain complex technical trade-offs to stakeholders
- Candidates must already reside and be fully eligible to work in Spain
- Participation in the on-call rotation is required
Benefits:
- Paid standby fees and overtime pay for on-call rotation
- Guaranteed rest periods and flexible hours following night incidents
- Split on-call rotations (weekdays vs. weekends) to minimize fatigue
- Remote work anywhere in Spain
- Full-time permanent contrato indefinido via Deel
- Work-life balance and flexibility
- Professional learning and growth opportunities
- Equal-opportunity employer with reasonable accommodations upon request
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