Core Network Engineer

airalo· Core Product
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🌍 Remote📍 SpainFull Time💰 GBP 60K–86K

About this role

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

 

Your main responsibilities will be:

  • Designing the IP infrastructure of our multi-site data centers
  • Designing the GRX/IPX interconnectivity and global PoP structure to access mobile partner networks
  • Defining the WAN network strategy
  • Leading and realization of the data centre LAN and WAN networks, specifically the configuration of DRAs, GTPs, GGSN/PGW, SBC, FW, Routers
  • Integrating direct roaming agreements and sponsored roaming agreements
  • Tracing of signalling and user plane transport for debug issues
  • Acting as a primary interface between the Core Network team and Airalo’s Platform team, Airalo’s Network Operations team and technology partners (vendors, roaming partners)
  • Core network optimisation and enhancement
  • Supports the operations team in regards to:
  • Deployments and rollouts
  • Performance improvements
  • Perform trainings
  • Supporting the partner’s operations team

What You'll Bring

  • Technical Degree in Engineering or Telecommunications preferred or equivalent experience demonstrated
  • 3 - 5 years minimum relevant experience in the telecom core field
  • 3+ years experience with network elements such as: Packet Gateway GGSN/PGW/DPI, direct and sponsored roaming (HLR/HSS), diameter routing and GTP, GRX
  • 3+ years experience with these protocols; Sigtran: MAP (Mobile Application Protocol), Sigtran: CAP (Camel 1-3), Diameter (Ro, Gx, Gy, Gn, Gi), REST API, BGP
  • Excellent verbal and written communication skills

Bonus Points

  • IREG Testing experience is preferred
  • International working experience is ideal

Why People Join Us

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 spans 60+ countries, united by a shared belief that great work happens when people are trusted to own what they do. There's trust to own what you do, space to focus without constant layers of process, and a clear sense of what you're responsible for from day one.

As Airalo continues to grow, so do the opportunities to learn, take on new challenges, and make a real impact - from anywhere in the world.

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.

Frequently Asked Questions

What is the salary for the Core Network Engineer role at airalo?
The listed salary for this Core Network Engineer position at airalo is GBP 60K–86K. This is a remote Full Time role.
Is the Core Network Engineer job at airalo remote?
Yes, this Core Network Engineer position at airalo is remote, with team members based in Spain. You can work from home or anywhere in the supported regions.
Is the Core Network Engineer role at airalo full-time or part-time?
This is listed as a Full Time position. It is posted as a Core Network Engineer role in the Core Product department at airalo.
Which team or department does the Core Network Engineer at airalo belong to?
This Core Network Engineer position is part of the Core Product department at airalo. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Core Network Engineer position at airalo?
Click the "Apply Now" button on this page. You will be redirected to airalo's official application portal hosted on lever where you can submit your application directly.
When was the Core Network Engineer job at airalo posted?
This Core Network Engineer position at airalo was posted on Sep 22, 2026. Apply as soon as possible — early applications are often reviewed first.
Core Network Engineer
airalo · 💰 GBP 60K–86K
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You'll be redirected to airalo's official application page on Lever.