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Airalo Logo Airalo · IT - Software Development

Senior Backend Engineer

United Kingdom; Spain Employment contract · Job Posted January 22, 2026
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Job Description

Join our team as a Senior Backend Engineer where you will lead the evolution of our global platform with more then 20 million users. We value deep technical mastery, a mentor mindset, and the ability to balance rapid innovation with system stability. While we use Laravel, we highly value the architectural rigor of seasoned Symfony experts ready to pick up Laravel and apply their skills to our ecosystem.

Job Responsibility

  • 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 (SOA) to ensure modularity and resilience
  • Set the bar for code quality by enforcing SOLID principles, design patterns, and testing standards
  • Actively coach mid-level engineers through deep code reviews and technical knowledge sharing
  • Identify bottlenecks in services and implement advanced caching and database strategies
  • Partner with Product and DevOps to translate complex requirements into scalable technical roadmaps
  • Participating in on-call rotation

Requirements

  • 7+ years of professional backend development experience with a deep mastery of PHP
  • 4+ years of building enterprise-grade applications in Laravel or an equivalent senior background in Symfony
  • Mastery of distributed systems, event-driven architecture, and messaging patterns like SQS or Pub/Sub
  • Knowledge of SQL and NoSQL including performance tuning and handling transactions at scale
  • Experience architecting on AWS and managing containerized environments with Docker
  • A champion of clean code, automated testing, and CI/CD best practices
  • Fluent English with the ability to explain complex technical trade-offs to stakeholders

Nice to have

  • Experience with SaaS/PaaS, SOA, or microservices architecture
  • Experience with eSIM, or GSMA technologies
  • Familiarity with Traveltech solutions

What we offer

  • Health Insurance
  • work-from-anywhere stipend
  • annual wellness & learning credits
  • annual all-expenses-paid company retreat in a gorgeous destination
  • standby fees + overtime pay for on-call
  • delayed start for on-call duties for first 6 months
  • guaranteed rest periods and flexible hours following night incidents
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