Senior PHP Engineer in Glasgow

About Airalo

Airalo is the world’s first eSIM store that helps people connect in over 200+ countries and regions across the globe. We are building the next digital service that revolutionises the telecom industry. We are a travel-tech company and an equal‑opportunity environment that values and executes diversity, inclusion, and equity. Our team is spread across 50+ countries and six continents. What glues us together is our commitment to changing the way you connect.

About You

We hope that you care deeply about the quality of your work, the intrinsic worth of tasks, and the success of your team. You are self‑disciplined and do not require micromanagement in terms of your skillset and work ethic. You do your best to flourish as an individual every day while working hard to foster a collaborative team environment. You believe in the importance of being — and staying — authentic, honest, positive, and kind. You are a good interlocutor with clear and concise communication. You are able to manage multiple projects, have an analytical mind, pay keen attention to detail, and love to get your hands dirty. You are cognizant, tolerant, and welcoming of vulnerabilities and cultural differences.

About The Role

Position: Full‑time / Employee
Location: Remote‑first
Benefits: Health Insurance, work‑from‑anywhere stipend, annual wellness & learning credits, annual all‑expenses‑paid company retreat in a gorgeous destination & other benefits

On‑Call

Participating in our on‑call rotation is a core expectation of this role. It is 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 minimise fatigue.

Please refer to the On‑Call Policy in the Airalo Handbook for full details.

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.
• 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.

Application Process

If you are interested in this position, please apply via the link. Please note that to be considered for this role, you must reside in and be fully eligible to work in either the UK or Spain. Proof of a valid right to work in one of these two countries will be required.

Equal‑Opportunity Statement

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. 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. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.