Senior PHP Engineer

Help Us Build The Future of Travel At Airalo, we're making it easier for people to stay connected wherever they travel. As the world's first eSIM store, we help millions of travelers access affordable mobile data in 200+ countries and regions around the world. Today, we're a team of 400+ people across 60+ countries, building a product used by travelers every day. We've grown quickly, but we've worked hard to keep what matters: trust, ownership, and the freedom for people to do great work without unnecessary layers or bureaucracy. We're fully remote by design, genuinely global, and united by a shared mission to make travel simpler for everyone. Your Next Destination Location: Remote, anywhere in Spain. Contract: Full-time, permanent contrato indefinido via Deel (our employer of record in Spain). Benefits: Learn more about our benefits here in this link - https://airalo-public.notion.site/Benefits-25396a97ffca81fb9bc1f0be479f1be3?pvs=74  Languages: English is our main working language day to day, so you'll need to be comfortable communicating in it both in meetings and async. Curious what it's actually like to work at Airalo? We've put together a guide for each of the hubs we hire from most, covering our benefits, remote culture, employment setup, and what our team values most: Life at Airalo · España: https://airalo-public.notion.site/life-at-airalo-espana Life at Airalo · United Kingdom: https://airalo-public.notion.site/life-at-airalo-united-kingdom Life at Airalo · United Arab Emirates: https://airalo-public.notion.site/life-at-airalo-united-arab-emirates   Are you a seasoned engineer who thrives on solving complex architectural puzzles in PHP? 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. Your main responsibilities will be to: • 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 Does this sound like you: • 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 • AI Proficiency: Ability to effectively use AI tools during technical tasks; we value engineers who know how to prompt, validate, and iterate with AI to build better software faster. • 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 Bonus: • Experience with SaaS/PaaS, SOA, or microservices architecture. • Experience with eSIM, or GSMA technologies. • Familiarity with Traveltech solutions. • Experience in building or maintaining custom SDKs would be a plus Please be aware that we can only consider candidates for this role who already reside and are fully eligible to work in Spain.   If you are interested in this position, please apply via the link.   Why People Join Us In Spain We started Airalo to make staying connected effortless, wherever you are in the world. Today, millions of travelers rely on our eSIMs, and many of the people building the product were customers first. Our team is united by a shared belief that great work happens when people are trusted to own what they do. As Airalo continues to grow, so do the opportunities to learn, take on new challenges, and make a real impact. For many of our teammates in Spain, it's the combination of stability, flexibility, and genuine work-life balance that makes Airalo feel like home. On-Call Participating in our on-call rotation is a core expectation of this role. It's essential for maintaining 24/7 service reliability across our global operations, ensuring our systems remain resilient and our customers experience uninterrupted service, regardless of time zone or geography. Paid Rotation: We offer standby fees + overtime pay. Delayed Start: No on-call duties for your first 6 months. Rest & Recovery: Guaranteed rest periods and flexible hours following night incidents. Shared Load: Rotations are split (Weekdays vs. Weekends) to minimize fatigue. Please refer to the On-Call Policy in the Airalo Handbook for full details: https://airalo-public.notion.site/our-approach-to-engineering-on-call-policy Before You Hit Apply By applying, you acknowledge and agree that, in case of successful application, Airalo may request to run background checks as a condition for entering into an agreement with you. Rest assured that these checks will only occur upon your prior consent and at the end of the selection process, and will be strictly limited to what is allowed under the laws that are applicable to you. All data that you share or that we collect in connection with such checks will be processed in accordance with our Privacy Policy, available here: www.airalo.com/more-info/privacy-policy?srsltid=AfmBOooBT0rXAj1FaNelZ3VfN0wvhwzvAoxdtHnOKSVETpiSjiXVuycy    We sincerely thank all applicants in advance for submitting their interest in this opportunity. Airalo is an equal-opportunity employer and values diversity, equity & inclusion. We do not discriminate on the basis of race, religion, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We are committed to providing reasonable accommodations upon request for individuals with disabilities throughout our job interview process.