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Senior Cisco Voice Engineer 

At Proximus SpearIT, we do everything to enable companies to work smarter, safer and faster. Customers come to us for our wide and extensive offering of IT services. Due to our strong growth, we are always looking for new employees.

Proximus SpearIT strengths:

  • Infrastructure projects and integrations, on-site and in the cloud;
  • Services related to networks, security, Skype for Business, storage, network and server maintenance, monitoring, service desk, and on-site support;
  • Support by IT specialists, project managers and interim managers;
  • Sale of servers, network equipment, smartphones, tablets, PCs and accessories.

What do we expect from you?

Job description:

  • Global operational, administrative and aptitude of the Unified Communications technologies such as CUBE, SIP trunk implementation and SIP protocol troubleshooting, Cisco UCS.
  • Must have first-hand operational management of multi-node, multi-site, and multi-region deployments
  • Install, configure, troubleshoot, and upgrade UC environments
  • Working experience with middle-scale enterprise Cisco Unified Communications and Collaboration solutions including design, implementation and support

Specific knowledge of Cisco’s UC portfolio including, but not limited to,

  • Highly Desired: 5-10 years of experience preferred in Communications Manager, Unity Connection, Unified Presence (Jabber), Attendant Console (Peterconnect), Routing, Voice Gateways, Expressway, Video Conferencing, TelePresence, and WebEx solutions
  • Working knowledge of third party dependencies including, but not limited to:
    • Microsoft Exchange and/or Office365
    • Microsoft Active Directory
    • DNS
    • DHCP
    • TFTP
  • Infrastructure and application oversight and ownership (OS, firmware, security)
  • In-depth knowledge of communication protocols (e.g. H.323, SIP, H.248, QoS, COS, etc.)
  • In-depth knowledge of communication signaling and compressions (e.g. domestic and international PRI (T1/E1), Analog, SIP, G.711, G.729, G.722)
  • Global dial plan development and administration (specific to E.164)


Job requirement:

Indirect Experience (must Have)

  • Must have working knowledge of networking technologies (Layer 2/3 LAN, WAN, MPLS, SD-WAN, Connectivity, IP, VLAN, 802.1X)
  • Must have working knowledge of security technologies (Firewall)
  • Ability to develop and maintain accurate documentation
  • Proactive oversight of hardware and software lifecycle management
  • VMWare ESXi, Hyper-V and various Windows Server and Desktop OS and macOS
  • Any experience in managing call accounting, call recording, and call reporting duties
  • Ability to develop, document, and/or provide training to both technical and non-technical personnel
  • Ability to directly exchange (ticketing) with our Telecom Provider
  • Proven ability learn new technologies and applications directly or indirectly in support of the communications infrastructure
  • Understanding of cloud and hybrid technologies


  • Proven ability to work in a high-touch, fast-paced environment
  • Understands industry trends, including new products and solutions
  • Understands global and domestic personnel communications security and is pro-active in ensuring data privacy and compliance
  • Excellent technical skills, including ability to define trade-offs, ask probing questions, and incorporate technology solutions into a broader enterprise environment
  • Pro-active awareness of direct and indirect security threats
  • Must be effective in working independently and in a team setting
  • Must have the ability to understand and actively problem solve direct and indirect components and dependencies
  • Strong oral and written communication skills to articulate technologies to technical and non-technical personnel
  • Excellent interpersonal and customer relationship skills
  • Certification strongly preferred (CCNP certifications)
  • Experience in Pre-sales.
  • Ability to identify and make pro-actively value-added recommendations
  • French and English Fluent  

Your working Place


What do we offer?

At Proximus SpearIT, you can take your career in many directions. You will be among the first to explore new technologies and can constantly update your skills in our ICT Academy. Our working culture is that of an SME: we say it like it is and never shy away from a challenge.

Since we form part of the Proximus Group, you also benefit from the advantages and security of a large company. You can expect an attractive salary and an extensive package of fringe benefits.

Eager to take the plunge?

Don’t hesitate: quickly send us your motivation letter and CV using the button below.

If you have any questions about the job, feel free to call Roel Kox on 0499 98 14 84.


Proximus SpearIT – 38 Ferdinand Allenstraat – 3290 Diest

Apply now!