Senior Mobile Core and Roaming Engineer

About the Role We are looking for an experienced Senior Mobile Core & Roaming Engineer to join one of our clients, a leading international organisation in the telecommunications industry. You will become part of a specialised engineering team responsible for international roaming, mobile core networks, signalling, security, and ensuring the reliability of critical mobile services. In this role, you will work at the heart of a complex mobile network environment, combining hands-on operational engineering and complex troubleshooting with platform optimisation, automation, and the implementation of new mobile technologies. You will collaborate closely with internal engineering teams and international telecom and roaming partners to ensure reliable and secure mobile connectivity. Why Join Wypoon Technologies? At Wypoon Technologies, you’ll work on challenging projects for leading organisations such as Heineken, ING, ASML, Philips, and Shell, solving complex technical challenges and contributing to business-critical environments. Here’s what makes us stand out: ✔ Impactful Work: Shape the future of our clients’ digital landscapes. ✔ Innovative Environment: Collaborate within a supportive team that values learning and growth. ✔ State-of-the-art technology: Access the latest tools and platforms. ✔ Global Opportunities: Dreaming of living and working in the Netherlands or Belgium? We provide full support with visa processes, making your transition smooth and hassle-free! #LI-DNI What You’ll Be Doing As a Senior Mobile Core & Roaming Engineer, you will be responsible for the reliability, performance, and continuous improvement of international mobile services. Your responsibilities will include: Managing, configuring, maintaining, and optimising platforms supporting international roaming and mobile core services.Monitoring network performance and proactively identifying technical and operational issues.Investigating and resolving complex production incidents affecting mobile connectivity and service availability.Troubleshooting signalling, connectivity, and roaming-related issues across mobile network environments.Working closely with internal engineering teams and international telecommunications partners on integrations and service delivery.Acting as a technical point of contact for network environments, infrastructure, signalling, and related security topics.Contributing to improvements in network reliability, monitoring, security, and operational efficiency.Supporting the implementation and further development of technologies such as 4G/LTE, VoLTE, and 5G.Contributing to telecom fraud prevention, detection, and network security capabilities.Automating recurring operational activities and introducing smarter solutions to improve efficiency and reliability.Combining operational responsibility with engineering, automation, and continuous technical improvement.Participating in a rotating on-call schedule, approximately once every five to six weeks. What We’re Looking For Core Requirements Strong professional experience within mobile telecommunications networks, preferably within Mobile Core, Packet Core, or Roaming environments.Hands-on experience with international roaming and/or strong Mobile Core experience with clear exposure to roaming services.Strong understanding of telecommunications signalling protocols, particularly SS7 and Diameter.Knowledge of additional protocols and technologies such as SIP, INAP, IP, and relevant 3GPP standards and interfaces.Hands-on experience working with Linux and/or Unix environments.Experience with network monitoring, troubleshooting, configuration, and operational telecommunications tooling.Knowledge of 4G/LTE, EPC/Packet Core, VoLTE and/or 5G Core technologies.Proven ability to investigate and resolve complex incidents within business-critical production environments.Strong analytical and troubleshooting skills combined with a proactive approach.Ability to work independently, take ownership, and make technical decisions when required.Experience collaborating with multidisciplinary engineering teams and external telecommunications partners.Professional fluency in English.Willingness to participate in a periodic on-call rotation.Ability to work in a hybrid setup, approximately two days per week. Nice to Have Experience with telecom fraud prevention, fraud detection, or signalling security.Experience with telecommunications monitoring or signalling platforms such as Tekelec, Radcom, Datamon, or comparable solutions.Experience with automation, scripting, or operational tooling within a DevOps environment.Experience working directly with international carriers, roaming partners, or other telecommunications providers.Hands-on exposure to VoLTE roaming and/or 5G roaming. Join Wypoon Technologies, where your expertise will thrive, your ideas will be valued, and your career will reach new heights. Apply now to be part of our transformative journey!