Who are we:Neotalent Conclusion is one of the leading Iberian specialists providing services in Information Technology and Engineering services. As part of the Netherlands-based organization Conclusion, which has an ecosystem of over 25 companies and 3,600 employees, we are focused on increasing the technological capacity of our clients and the digital transformation of their application ecosystems.We are talent specialists, attracting the best people and combining them with the needs of the most ambitious projects, at the right time. Our success comes from our investments in innovation, our focus on results, and, above all, the guarantee that our people will have happy and rewarding careers.With over 25 years of solid experience, Neotalent Conclusion has established its presence in key locations, including Madrid, Lisbon and Porto. The company currently has more than 950 professionals in the different areas in which it operates.Neotalent, the responsive people.Find out more about us at www.Neotalent.Pt/es y https://neotalent.Pt/es/oportunidades-de-carrera/.Role Overview:We are looking for a rWho are we:Neotalent Conclusion is one of the leading Iberian specialists providing services in Information Technology and Engineering services. As part of the Netherlands-based organization Conclusion, which has an ecosystem of over 25 companies and 3,600 employees, we are focused on increasing the technological capacity of our clients and the digital transformation of their application ecosystems.We are talent specialists, attracting the best people and combining them with the needs of the most ambitious projects, at the right time. Our success comes from our investments in innovation, our focus on results, and, above all, the guarantee that our people will have happy and rewarding careers.With over 25 years of solid experience, Neotalent Conclusion has established its presence in key locations, including Madrid, Lisbon and Porto. The company currently has more than 950 professionals in the different areas in which it operates.Neotalent, the responsive people.Find out more about us at www.Neotalent.Pt/es y https://neotalent.Pt/es/oportunidades-de-carrera/.Role Overview:We are looking for a Senior Back Office Engineer with solid experience in Core CS Network operations and maintenance to join a strategic NOC support project.Work Type: On-site or Remote (Outside Madrid)Availability: 24x7 Support (on-call and night shifts)What you will do:- Provide 2nd line operations and maintenance support for the Core CS network.- Proactively analyze and propose service and KPI improvements.- Lead technical taskforces and coordinate complex, multi-department projects.- Act as the central technical point of contact for critical incidents and major changes.- Implement network changes following ITIL processes.- Coach and mentor junior engineers to strengthen team expertise.- Participate in emergency calls alongside the Incident Manager for issue resolution coordination.What you are like:- Prior experience working on the MasMovil Network (preferably within a NOC) is highly valued.- Minimum 3 years in Core Network maintenance and operations, ideally in the MM NOC in Romania.- Experience with ICT operations and maintenance support.- English: Minimum level C1Technical Expertise:- Protocols: HTTP(S), SOAP, IPSEC, DNS(SEC), Radius, Diameter, TCP/IP, SCTP, SS7, FTP, SSH, SNMP, iSCSI, WAP, MMS.- Database Administration: Oracle, LDAP, MySQL, PostgreSQL.- Unix/Linux Administration: Solaris 8/9/10, OpenBSD, RedHat, Ubuntu, Debian.- Virtualization Suites: Solaris Containers, VMware ESXi.- Platforms: SDM, IMS, Core CS, Call Server, Softswitch, Interco.- Core CS Network Elements: HLR, HSS, Switches, SLF, S-CSCF, P-CSCF, I-CSCF, AS, OSA, CAMEL, MRF, MGW, MGCF, BGCF, SGW, Softswitch, etc. (vendors: Nokia, Italtel, Huawei).- Services: Residential Voice, Mobile Voice, VoLTE, VoWiFi, Enterprise Voice.Why join us- Work on challenging projects for big clients- Learn more about emerging technologies- Design your career plan- Access to continuous training and certifications- Evolve through our internal mobility program- ... and much more!