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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Core Network Engineer - **Company:** Airalo - **Location:** Spain (Remote available) - **Contract:** Permanent contract - **Skills:** Border Gateway Protocol, Data Centers, Software Debugging, GPRS Core Networks, Mobile Application Software, Internetwork Packet Exchange, Systems Integration, Network Routers, Computer Network Operations, SIGTRAN, Restful APIs - **Published:** September 23, 2026 - **Apply:** https://startup.jobs/core-network-engineer-airalo-10156100 ## About the Role * 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., * 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 ## Description * 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, 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. 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