Voice Network Engineer

Telent; North Warwickshire; Hybrid; GBP 45,000 - 60,000; Full time

Job summary

A leading telecommunications firm is seeking a Voice Network Engineer for a hybrid position in North Warwickshire. You will design, assure, and govern voice communication systems across the UK rail network. Ideal candidates have 5+ years in IP Voice solutions, specific experience with Cisco technologies, and project experience in managing migrations. The role involves mentoring juniors and supporting systems that ensure operational reliability. Join us and contribute to a vital telecommunications infrastructure.

Benefits

26 days annual leave

Company pension scheme

Occupational health support

Discounts on Cinema, Restaurants and Shopping

Family friendly policies

Qualifications

• 5 years' experience designing and building IP Voice solutions.
• Experience with Cisco Collaboration Flex Plan framework.
• Familiarity with rail telecoms assurance and governance processes.

Responsibilities

• Design IP networks and modifications to existing networks.
• Produce high‑level and detailed designs for voice systems.
• Act as a 3rd line technical lead to resolve issues.
• Create implementation and cutover plans for site works.

Skills

IP Network knowledge

IP Voice expertise

Telecommunications knowledge

Excellent Knowledge of Microsoft Suite

Cisco CCNP

Juniper JNCIP

Education

Cisco CCNP (Voice Specialism)

Relevant degree or certification

Tools

Cisco Call Manager

CUCM Cloud

IP Trade TSS

RedBox IP Voice Recorders

Acculab Voice Gateways

Job description

Voice Network Engineer - Warwick - Hybrid

We are currently looking for a Voice Design Engineer to be responsible for the design, assurance, and technical governance of voice communication systems delivered over Network Rail's telecommunications infrastructure. The role supports the safe, reliable, and resilient delivery of operational voice services across the UK rail network, ensuring compliance with Network Rail standards, safety requirements and industry best practice. The position plays a key role in modernising legacy voice platforms, integrating IP‑based voice services, and supporting nationally significant rail operational systems.

Key Objectives:

• Provide skilled IP Network & IP Voice, Telecommunications knowledge enabling:
• Design of green field IP networks and modifications to existing IP & SDH networks
• Design of Voice over IP Networks for Voice Concentrator renewals
• Provide input to the required Migration Strategies- On‑premises Cisco Unified Communications Manager (CUCM) to Cisco UCM Cloud
• Legacy telephone systems to IP Voice solutions
• Demonstrate security competence to implement suitably secure access controls such as Zero Trust (ZTNA)
• Modification of live voice network configurations in line with change management
• Create implementation plans for site works and integration testing
• Create cutover plans for transition into live environments
• Provide handover documentation to management centres
• Update of Network Rail Telecoms design platforms
• Act as mentor to junior team members on technical matters
• Evaluate emerging technologies and their suitability for Network Rail

Deliverables:

• Produce high‑level and detailed designs in accordance with the Rail Engineering Plan
• Perform reviews to verify designs are compliant to contract technical requirements
• Design and support migration strategies from on‑premise CUCM to cloud‑hosted Cisco calling solutions
• Act as a 3rd line technical lead to resolve technical problems
• Take the lead where required in root cause analysis to drive issue resolution and limit impact to the customer.
• Creation of design packs in accordance with Network Rail design rules
• Produce Bill of Materials associated with designs to support implementation phases
• To be responsible for documentation and upkeep of technical databases
• Report against programme to relevant Project Manager
• Attend and present at technical design review (TDR) and Inter Disciplined Check (IDC) meetings as required

Experience:

• 5 years' experience designing and building IP Voice solutions, ideally to include:
  • Cisco Call Manager
  • CUCM Cloud
  • IP Trade TSS, TPO and Turrets
  • RedBox IP Voice Recorders
  • Acculab Voice Gateways
• Experience working on Network Rail FTN / FTNx or equivalent carrier‑grade telecoms networks.
• Familiarity with rail telecoms assurance and governance processes.
• Project Experience: Proven track record of managing high‑user‑count migrations within a Cisco Collaboration Flex Plan framework.
• Modern Networking: Understanding of software‑defined networking (SD‑WAN) and hypervisor management (ESXi or Cisco NFVIS) for virtualized voice applications preferred.

Skills/Qualifications:

• Cisco CCNP (Voice Specialism desirable)
• Juniper JNCIP / JNCIS
• Excellent Knowledge and competency of the Microsoft Suite of applications.

What we offer

A career at Telent can span sectors, roles, technologies, and customers giving you the opportunity to develop, learn new skills and make an impact. We are growing and we rely on our committed Team to deliver. We nurture the talent that makes this happen, by our on‑going commitment to creating an inclusive culture that respects and values difference, that celebrates diverse ideas. We want everyone be themselves and to thrive at work.

The additional benefits with this role:

• 26 days annual leave, plus public holidays, plus the option to buy up to 10 days or sell six days each year.
• Company pension scheme
• A range of family friendly policies
• Occupational health support and wellbeing Portal
• Discounts on Cinema, Restaurants and Shopping with Telent Reward scheme.