Apply now »

Voice Core Mobile Operations

Aggregate function:  Technology
Business Area:  VT Network Operations
Posting Country:  Romania
Date Posted:  27 May 2025
Full Time / Part Time:  Full Time
Contract Type:  Permanent

At Vodafone, we’re working hard to build a better future. A more connected, inclusive and sustainable world. As a dynamic global community, it's our human spirit, together with technology, that empowers us to achieve this. 

We challenge and innovate in order to connect people, businesses, and communities across the world. Delighting our customers and earning their loyalty drive us, and we experiment, learn fast and get it done, together.

With us, you can be truly be yourself and belong, share inspiration, embrace new opportunities, thrive, and make a real difference.

Your day to day:

Preventive and corrective second level troubleshooting ensuring quality, continuity of service and the restoring time for Core IMS Network Elements. In collaboration with 1st Line Operations teams, work out procedures related to the analysis of alarms to detect and eliminate faults. Perform data configuration, software rollout and support integration activities with planning and delivery functions.

With these activities you will have a great impact on our business:

  • In case of incident assure trouble shooting analysis and all the repair actions, including vendor support escalation, to achieve service and performance restoration of Core Network.
  • Perform proactive maintenance activities to prevent incidents and constantly optimize the network, e.g. Daily Walkthroughs and Health checks for Core IMS components.
  • Assure planned work activities, network rollout, software upgrades and parameter changes in Core IMS network ensuring quality of service and avoiding regression on network functionalities.
  • Introduce and manage cutting edge technologies including vendor and on the job training.
  • Perform acceptance test and integration/configuration activities of new network elements of the Core CS network.

With these skills you are a great candidate:

  • Very good knowledge of core network principles for 2G/LTE technologies: MSS, MGW, SBC, CSCF, TAS, ENUM, VoLTE
  • Good knowledge of core network protocols: SIGTRAN, ISUP, CAMEL, INAP SIP, Diameter, TCP/UDP, S1AP, GTP/GTPv2, MAP, BSSAP.
  • Experience in trace analysis (Wireshark traces, Tektronix traces, network element traces);
  • NFV Framework basics and knowledge of VNF context and technologies (virtualization layer, VIM, VNF Managers). Understanding of   involved protocols (MPLS/ IPSEC Tunnel).
  • Automation Skills based on most common language/tools (Phyton, Power Automation, RH Ansible, scripting).
  • Unix/Linux OS administration Skills.

Must have technical / professional qualifications:

  • University degree: faculty of Electronics, Telecommunications and Information Technology
  • 1-2 years of experience in Core Network Operations and Maintenance activities
  • Nokia core network trainings and certificates or equivalent

Sounds like the perfect job? We’ve got even more to offer:

  • Hybrid way of working
  • Medical and dental services
  • Life and hospitalization insurance
  • Dedicated employee phone subscription
  • Take control of your benefits and choose any of the below options: meal tickets/private pension/vacation vouchers/cultural vouchers within the budget.
  • Special discounts for gyms and retailers
  • Annual Company Bonus
  • Loyalty Programme
  • Ongoing Education – we continuously invest in you to ensure you have everything needed to excel on the job and enhance your skills 
  • You get to work with tried and trusted web-technology
  • Getting in on the ground floor of a technology changing company
  • We let you write your own story: go for a trip, experience new things, have fun and enjoy your 23 vacation days.
  • Special Paternal Program - 4 months of paid paternity leave

Vodafone is committed to attracting, developing and retaining the very best people by offering a motivating and inclusive workplace in which talent is truly recognised and rewarded. We are committed to promoting Inclusion for All with the belief that diversity plays an important role in the success of our business. We actively encourage everyone to consider becoming a part of our journey.

Apply now »