Voice Core Engineer Lisboa

Voice Core Engineer
Lisboa
Lisboa, Lisboa, Portugal

CELFINET is a global provider of unique cellular networks’ management solutions. With a fast pace growing business, we are reinforcing our CORE team!

Voice Core network (IMS/CS) 3-year experienced engineer

Responsibilities:

- Experience working with IMS Voice/Vo
LTE core nodes such as SBC,
- CSCF, TAS (MMTel AS, SCC-AS, IP-SM-GW, IM-SSF), BGCF, MGCF, and MRF;

- Experience working with CS Voice/Vo
LTE core nodes such as:

MGW, MSC, MGCF, IM MGW;

- Experience analyzing IMS
- related flows and procedures (e. G. , Vo
LTE-Vo
LTE call, T ADS, Homing, Break-in call, Break-out call);

- Knowledge of the parameters that compose the subscriber’s profile in HSS/HLR and their

impacts on the network behavior;

- Comfortable with Vo
LTE-related protocols (e. G. , SIP, Diameter, DNS, H248, Camel,

RTP/RTCP);

- Comfortable with Vo
LTE/Vo
Wifi concepts and architecture;

- Preferable:

experience with HSS, HLR and Cu
DB;

- Preferable:

experience with signaling transfer elements (e. G. , DRA, STP);

- Preferable:

experience with DNS/ENUM and Number Portability (NP);

- Vendors:

Huawei / Oracle / Ericsson/ Mavenir/ Nokia;

Qualifications:

- Electronics/Telecommunications/Computer Engineering BSc or MSc degree;

- Certifications from Ericsson, Huawei, Nokia, or Cisco are a plus;

- Location:

Portugal, Lisbon;

- Customer facingexperience in Telecom operators;

- Excellent verbal and written communication skills (Portuguese and English);

- Ability to plan, organize and prioritize the responsibilities;

- Good team player and with highly proactive skills;

What we have to offer:

- Unique opportunity to work in an international company;

- Be part of a highly skilled
- driven team, eager to lead through creativity and innovation;

- The opportunityto work in challenging projects with the most demanding and technologically advanced telecom operators in the world;

- Access to the most recent technologies and methodologies;

- Knowledge-sharing corporate culture;

CELFINET offers the opportunity to work in a uniquely challenging environment within a highly motivated team. Submit today your application to joinus@celfinet.com if you are the candidate we are looking for!