Core Network Engineer

Posted 5 Days Ago
Be an Early Applicant
Hiring Remotely in Spain
Remote
60K-86K Annually
Mid level
Information Technology
The Role
Designs and operates global telecom core network infrastructure, including data center networks, WAN strategy, GRX/IPX interconnects, roaming integrations, and mobile network elements. Troubleshoots signaling and user-plane transport, optimizes the core network, supports deployments and performance improvements, trains teams, and coordinates with platform, operations, vendors, and roaming partners.
Summary Generated by Built In
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.
  • Contract: Full-time, permanent.
  • 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.

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.

Skills Required

  • Technical degree in engineering or telecommunications, or equivalent demonstrated experience
  • 3–5 years of relevant experience in the telecommunications core network field
  • At least 3 years of experience with packet gateways such as GGSN, PGW, and DPI
  • At least 3 years of experience with direct and sponsored roaming, HLR/HSS, Diameter routing, GTP, and GRX
  • At least 3 years of experience with MAP, CAP, Diameter interfaces, REST API, and BGP
  • Excellent verbal and written communication skills
  • IREG testing experience
  • International working experience
  • Comfort communicating in English
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The Company
HQ: Toronto
179 Employees
Year Founded: 2019

What We Do

Bringing you pain-free connectivity while you travel. As travelers ourselves, we’ve faced the painful situations of not finding Wi-Fi, losing the SIM card you’ve carefully taped to the back of your phone, and the horror of coming home to an unexpected roaming bill. We believe that in today’s modern world, connectivity and freedom should be accessible to all. Airalo is here to take away the pain and stress of researching and seeking out the best roaming deal. We’re here to let everyone stay connected globally while keeping it simple and pain-free. Airalo is the world’s first eSIM store for travelers to access over 200+ eSIMs at the most affordable, local rates from around the world, all via eSIM-compatible smartphone, tablet, or PC. Airalo offers you both connectivity and freedom - you’ll never have to carry multiple SIM cards or change your number again, no matter where you are in the world.

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