Core Network Engineer

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