Core Network Engineer

Remote from Spain·Full-time·Added yesterday

Airalo

15 open roles

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What they offer

£59,600 - £85,600 a year
Gross, as stated in the ad.
Full-time hours
Per the ad.
Fully remote
Per the ad.

What they ask for

Have the right to work in Spain
Airalo doesn't mention sponsorship in the ad.
Work in English
English is required, per the ad.
Have 3+ years of experience
Mid-level role.

The role

We're fully remote by design, genuinely global, and united by a shared mission to make travel simpler for everyone.

What you'll do

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

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.

Requirements

What we're looking for

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

Nice to have

IREG Testing experience is preferred
International working experience is ideal

About Airalo

Airalo is a global eSIM marketplace that provides travelers with instant access to mobile data in over 200 countries and regions. Founded in 2019, the company has become a leading player in the telecom industry, partnering with mobile network operators worldwide to offer affordable, flexible data plans. With a strong focus on technology and customer experience, Airalo has grown rapidly, serving millions of users and expanding its team across multiple continents.

In Spain, Airalo is building a significant presence, with a growing number of open roles based in the country. The company operates with a remote-first culture, offering flexibility and a diverse, international work environment. For international professionals, Airalo presents an opportunity to join a fast-paced, high-growth tech company in the telecom sector, with roles spanning data, engineering, finance, and marketing.

Industry: Telecom
Founded: 2019
Employees: 200–500
Headquarters: Singapore, Singapore
Website: airalo.com

Good to know if you are moving

Airalo is a remote-first company, allowing employees to work from anywhere, including Spain.
The company has a strong international presence, with a diverse team spanning multiple countries and cultures.
Airalo offers competitive compensation and benefits, including equity for many roles.
The company is in a high-growth phase, providing significant opportunities for career advancement.
Working at Airalo means being at the forefront of the eSIM and digital telecom industry.

In their own words

About the company & team

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 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.

Additional information

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.

All open roles at Airalo