Minimum 3 years of experience in telecom core engineering.
Understanding of telecom architecture on radio (2G, 3G, 4G and 5G) and core (voice, data, IMS, 5G SA). Experience in voice and/or data core networks and communication flows.
Knowledge of telecom signaling and core protocols including: SS7, Diameter, GTP, SIP/IMS, 5G SBI
Understanding of roaming and interconnect concepts.
Understanding of telecommunications security principles and solutions applied to prevent and detect risks.
Mobility and willingness to travel.
Experience with mobile operators or telecom vendors.
Exposure to telecom security technologies such as: Signalling Firewalls; SEPP; Fraud Management; Telecom Threat Detection & Lawful Interception
Knowledge of GSMA security standards and security requirements applied to telcos (eg, NIS2, TSA)
Experience supporting security audits or risk assessments.
Fluent in Portuguese and English (written and spoken).
