Senior VoLTE/IMS Expert

umlaut d.o.o.

Beograd, Bulevar Zorana Đinđića 2a

Senior VoLTE/IMS Expert

 Ref.Nr: 4248 | Location: Belgrade


◍ Have master’s degree in electrical engineering, computer science or related discipline
◍ Have 5-7 years of experience related to this position
◍ E2E assessment of telecommunication networks with special focus on IMS network and VoLTE and VoWiFi services
◍ Have excellent knowledge of IMS and VoLTE network design
◍ Have good experience in optimization of IMS/VoLTE, (e.g. parametrization & features) and related procedures such as SRVCC, IMS Registration, Call flows and voice codecs analysis
◍ Have ability to analyze E2E VoLTE signaling traces, using industry standard trace tools, e.g. Tektronix, Agilent, Anritsu, Nethawk, Astellia, Polystar, Nexus, Netscout, Wirehark and TEMS
◍ Have experience with 3GPP standard network protocols in some of the following protocol families: RRC, Layer 3, RANAP, MAP, BSSMAP, DTAP, ISUP, BICC, SIGTRAN, TCP/IP, SIP, RTSP, SCTP, GTP, IP routing protocols, RADIUS, DIAMETER and DNS
◍ Have experience with Network Virtualizations and Cloudifications
◍ Have experience with 5G technology is appreciated with special focus on VoNR and 5GC solutions
◍ Are capable to work independent & in a team, reliable & proactive
◍ Have high degree of customer and quality orientation
◍ Have high flexibility and willingness to travel domestic and international

our öffer

◍ Combining start-up mentality with an international work atmosphere in a multi-cultural environment
◍ Providing audits, analysis, and optimization consulting services to network operators for IMS/VoLTE implementations
◍ Performing detailed analysis of implemented design and concepts of complex communication networks
◍ Analysis and evaluation of measurement data to identify and classify failure patterns of low performing voice (VoLTE and Legacy) and data KPI’s
◍ Analysis and evaluation of measurement data to identify and classify failure patterns of low performing voice (VoLTE and Legacy) and data KPI’s
◍ Analysis and evaluation of measurement data to identify and classify failure patterns of low performing voice (VoLTE and Legacy) and data KPI’s

top 3 reasöns

1. Innovative projects with big name clients and exposure to future, cutting edge technologies
2. Unlimited individual growth opportunities and the ability to create a personalized career path
3. Access to a global network with opportunities to live and work abroad
4. +X: A team spirit and family-like culture as exciting and colorful as our gradient colored coffee marshmallows


umlaut is a 4500+ people strong global full service cross industry end-to-end partner that applies its deep-running interdisciplinary, collaborative advisory and fulfilment capabilities to change its clients fortunes for the better and - on top of that - add value, quality and focus to their organisations and produce.


Boban Pavlovic
+ 381 (0) 62 72 72 72

Miljana Pejatovic
+ 381 (0) 62 73 73 73

Apply here

Upoznaj kompaniju umlaut d.o.o.

  • Why umlaut adds something on töp?
    umlaut adds something on top - this promises to help our clients all over the world to change the quality of their technological capabilities and organizational culture from regular to special. We add value on top of their services, products and entire organizational fabric, all the way throughout our partnership. Expected amount or quality plus an unexpected extra: 100%. Plus X.

    umlaut Belgrade story.
    From the very first project initiative in 2006, the company registration in 2009, the global company rebranding in 2019, we’ve passed major transition through, as goal for better shaping our organizational & people development. Our expertise in Telecommunication and Automotive industry is constantly seeking and offering high-quality expertise and career development opportunities. Our local team currently has around 140 employees. But this is not the end – we are still growing. We don’t change the company. We enable it to grow itself - for the better.

    Able. Agile. And humane.
    It’s all rooted in our philosophy. By adding something on top we are empowering our people. We are constantly trying to make our working environment cozy. We are team oriented. The ideas and suggestions of our employees are of great importance, because we consider that the culture of open communication within the company is the key to success. We all together have a clear vision of our mutual mission.
    Meet us closer!

    Infotainment testing; E-mobility; Device (Mobile Terminal) testing; Mobile Networks Benchmarking and Optimization; IoT; 5G; SW development; Project Management; Data Visualization; Cloud Services; Big Data in Telco.

    School of Electrical Engineering, Organization and Management, Computer Science, Mathematics, Faculty of Traffic and Transport...

    sector possess full in-house expertise in mobile terminals & networks testing, data visualization, SW development, QA and complex data analytics.

    testing sector, called Systems, has black belt in Infotainment testing & E-Mobility. Our competencies are focused on: infotainment testing, test automation, trace analysis, defect management and test evaluation. As a specialized provider of testing and development services, we have been implementing our testing methods and strategies in the development areas of electrics and electronics worldwide.


    Pogledaj profil kompanije
  • Prosečna ocena
    na osnovu 4 recenzije
    Mogućnost napredovanja
    Balans između karijere i privatnog života
    Utisak o radu u kompaniji na poziciji Automotive systems test Engineer
    Najnoviji utisak

    Pozitivna iskustva o kompaniji:

    Odlicna radna atmosfera. Mali workload.

    Zamerke kompaniji:

    Oniza primanja

  • Pozicija
    Prosečna neto zarada
    Min Max

    Test Engineer
    2 plate
    750 EUR / mesečno
    650 850

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