Experience
Carlos Pereira
Certification
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Education & T.
Core Network Consultant
P. Skills & Comp.
Carlos Pereira
Core Network Consultant
I'm a Telecom Consultant with 6 years experience who have been working in Core Networks for the last years with focus in VoLTE. During the last year it was also possible to develop and lecture a VoLTE training for operators across several countries in Europe. With my professional experience in operators and vendors I believe that I'm an added value for projects delivery and new solutions design.
Please take a look bellow to get more information about me and my work!
Experience
Training Developer
06/2017 – Present
Celfinet
End-to-end VoLTE training development (focus on Core area – IMS, CS and PS):
- Production of manuals and presentation slides;
- Lecturer;
IMS Consultant at Vodafone
04/2014 – Present
Celfinet
Working in IP Multimedia Subsystem (IMS) area:
- Solutions design and deploy;
- HLD and LLD acceptance, analysis and review;
- IMS Core Upgrade and Expansion – live and lab nodes: CSCF, HSS, DNS/ENUM and NACF/CLF;
- Projects coordination and planning making the connection between different internal teams and vendors;
- VoLTE network configuration, integration and testing of CSCF, HSS (IMS and LTE modules), DNS/ENUM, TAS (MMTel and SCC-AS) and SBC
on a multi-vendor environment (Ericsson, Huawei and Celfocus);
- HSS, HLR, CUDB and PG convergence to CSDB;
- E2E troubleshooting for IMS/VoLTE scenarios;
Consultant Integration Engineer at Ericsson
01/2013 – 03/2014
Altran
Working in IP Multimedia Subsystem (IMS) area:
- Ericsson SCC-AS: installation, configuration and testing;
- On Call support 24x7;
- BroadWorks application servers support (BroadSoft);
- On-Site OAM for Ericsson HSS (Angola);
- Installation, integration and troubleshooting of Ericsson CSCF and HSS;
- IMS live network’s upgrade and expansion;
- Installation, integration and troubleshooting of Presence Servers (PGM 5.0);
- Voice and video over LTE system configuration and testing (Ericsson IMS Core):
● CSCF
● HSS (LTE and IMS environment)
● MTAS (Ericsson TAS and SCC-AS solution)
● SAPC (Ericsson PCRF solution – Rx and Gx interfaces – basic level)
● IPWorks (Ericsson DNS and ENUM server solution – operational level)
Internship at Ericsson
04/2012 – 12/2012
Working on IP Multimedia Subsystem (IMS) area:
- Integration, configuration and troubleshooting of a testplant network for SRVCC tests, using Ericsson products (part of the IMS Core team) which resulted in the first VoLTE call in Portugal and one of the first “Single Radio Voice Continuity Call” (SRVCC) in the World (in a “real” environment);
- RCSe configuration for interworking between different operators;
- Integration, testing and troubleshooting RCSe (Rich Communication Suite enhanced) system in different operators;
Professional Internship at Ericsson
11/2011 – 03/2012
Have worked on IP Multimedia Subsystem (IMS) area as Services Engineer and took part on the following projects:
- Installation, integration and testing of Presence servers in different national operators (PGM 5.0);
- Integration, testing and troubleshooting of Rich Communication Suite (RCS 2.0) system including different features such as voice, presence and messaging, using different platforms: PGM, MTAS, MiO, BCS, CSCF and HSS;
Development of several applications for mobile devices. They are mainly localization based applications for Android OS.
Certification
Ericsson Certified Associate – IMS (IP Multimedia Subsystem)
01/2014
Certification Authority: Prometric
Education and training
Voice over LTE using MMTEL
10/2012
Organization: Ericsson
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IMS Technical
10/2011
IP Multimedia Subsystems course
Organization: IP Solutions
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Master’s Program in Electronics and Telecommunications Engineering
08/2005 – 07/2011
Principal subjects: Computer Science, Electronics and Telecommunications
Organization: University of Aveiro (Portugal)
English course
02/2010 – 06/2010
Principal subjects: written and spoken English;
Level: B2 - (CEFR) Common European Framework of Reference for Languages;
Organization: University of Aveiro (Portugal).
Exchange student due to Erasmus Program
Organization: University of Gävle (Sweden)
Personal skills and competences
Technical skills and competences
- E2E IMS troubleshooting in multivendor environments
- Linux/Unix knowledge
- Network tracing and packet analyzes
- SIP, SS7, Camel, Diameter, XCAP and DNS
- Call flows and packet structure in IMS area (voice, video, messaging, presence, etc)
- VoIP, VoLTE and SRVCC
- Huawei SBC
- Ericsson nodes: HSS (monolithic / front-end), CSCF, MTAS, MiO, PGM, SBG, DNS/ENUM, SLF, CUDB and NACF/CLF
- Basic knowledge of MySQL
Organizational skills and competences
- Multitasking and self-learning attitude
- Throughout several professional and academic projects it was developed a sense of leadership for projects and teams management
- Excellent commitment in order to reach the objectives
Social skills and competences
- Great capability for adaptation and learning
- Excellent ability to adapt to multicultural environments obtained during the Erasmus Exchange Program and some projects in Angola
- Team spirit attitude
- Problem-solving attitude
Mother tongue
- Portuguese
Other languages
Driving licenses
- A1 and B
Download CV file (.pdf)
