Core Network Support Engineer - Packet Core (f/m/x)Ready to take ownership of complex 4G/5G Packet Core environments and act as the key link between operators and vendor teams? Then we would love to hear from you!Salary: € 3000-5000 gross 14x per year + monthly amount for on-call dutyLocation: Vienna, 21st district (no remote work possibility)Technologies: MME | SGW | PGW | AMF | SMF | UPF | GTP | Diameter | Linux | OpenStack | Container | 2-5GSector: TelecommunicationWorking hours: Flexible work time with possible on-call dutyTeam Size: 10 membersWhat will I do here?Vendor Interface & Technical Support: Act as the technical point of contact for mobile network operators and interface with internal Level 3 teams.Packet Core Operations & Maintenance: Operate and maintain EPC and 5G Core network elements (e.g., MME, SGW, PGW, AMF, SMF, UPF) in virtualized and cloud-based environments.Incident Management & Troubleshooting: Analyze and resolve complex network issues (e.g., GTP, Diameter) to ensure service availability in line with SLAs.Change Management & Performance Optimization: Execute software upgrades, configuration changes, and continuously monitor and optimize network performance.Cloud & On-Call Support: Support deployments on OpenStack/Kubernetes environments and participate in on-call rotations to ensure 24/7 service availability.What should I bring with me?Education & Experience: Degree in Telecommunications, IT, or a related field, or equivalent hands-on experience in mobile core network environments.Packet Core Expertise: Solid knowledge of EPC and/or 5G Core technologies (e.g., MME, SGW/PGW, AMF, SMF, UPF, PCRF/PCF, ePDG).Protocols & Troubleshooting: Strong understanding of telecom protocols (GTP, Diameter, TCP/IP) and experience in troubleshooting mobile data services.Linux & Cloud Fundamentals: Familiarity with Linux systems and exposure to virtualization or cloud-native environments.Communication & Ownership: Team-oriented mindset with strong communication skills, proactive approach, and ability to work under pressure in dynamic environments.About the CompanyThe enterprise is a leading international telecommunications vendor, delivering advanced network solutions and supporting the evolution of mobile core networks. As part of the international Core Network team (10 members), you will take on a vendor-facing role and support major mobile network operators in Austria in the operation, optimization, and transformation of their Packet Core (4G/5G) environments.Salary€ 3.000 to € 5.000 (paid 14 x p.a.), depending on qualifications and experience.📩 Aplication Process:Initial interview with STEINER-HITECH via video callVideo Call with the Core Network TeamWe’ll guide you through the entire process!👨 Your Contact Person:Sascha Muffoffice@steiner-hitech.at+43 1 876 77 88Talpagasse 1A, 1230 Wienwww.steiner-hitech.at

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Core Network Engineer – Packet Core