Senior PHP Engineer

Ready to make travel easier for millions? Airalo is the world's first and largest eSIM store, helping travellers stay connected seamlessly in over 200 countries and regions. We trust our teams to take ownership, put customers first, and do work that has a real impact every day.

What's in it for you?

Airalo offers team members a range of perks, including remote work, generous PTO, wellness and learning allowances, and, of course, our annual Airalo Away retreat. Learn more about our benefits.

About the Role

Engineering drives Airalo's eSIM platform. We build the product that lets millions of people connect instantly across the globe. The challenges are exciting: high‑scale systems, carrier integrations, and products spanning both B2C and B2B. What matters most to us is creating an environment where engineers can do their best work. Real ownership, autonomy, and a direct link between what you ship and business outcomes are key.

Airalo's fully remote Engineering team is growing. In this role, you'll tackle complex technical challenges across our product ecosystem, helping build, innovate, and scale the platform that keeps millions of travellers connected worldwide.

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 than 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.

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.

• Paid Rotation: We offer standby fees and 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.

Your Main 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 (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.

Important Note

Please be aware that we can only consider candidates for this role who already reside and are fully eligible to work in Spain.

Airalo is an equal‑opportunity employer and values diversity, equity & inclusion. We are committed to providing reasonable accommodations upon request for individuals with disabilities throughout our job interview process.