Senior Network Engineer - Cardiff - Technojobs

Senior Network Engineer

Premium Job From Companies House


Companies House

Listed on

6th June




£33,134 - £49,000

Salary Notes

Base salary band is £33,134 - £38,000 with an additional DDaT allowance of £4,350 - £11,000 available. The final salary and allowance awarded will be based on an assessment of your skills and experience as demonstrated at interview.



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We have an exciting opportunity to join our Network Services team in Companies House!

We are looking for an experienced Senior Network Engineer to provide vital network services to Companies House. As part of the network team will be responsible for both day-to-day support of the network infrastructure and strategic and tactical enhancements. These include the migration of core services to the cloud (AWS & Azure) and on-premise upgrades to the network technology.

Companies House offers a flexible and welcoming culture that promotes a healthy work life balance as well as a proactive approach to wellbeing that allows us to be our best at work. We recognise that people are the key to our success so offer a fantastic benefits package including flexible working with no core hours, 30 Days Annual Leave, 8 Bank Holidays and 1 Privilege Day as well as enrolment into the Civil Service Pension Scheme with a contribution rate averaging 27%.

At Companies House, hybrid working is about achieving an effective balance between working in the office and working from other appropriate locations. Our approach to hybrid working provides opportunities for you to be adaptable in the way you work so that you can achieve a healthy balance between your work and home life. We currently expect those on hybrid contracts to attend their base office a minimum of one day a week but the exact degree of choice you have will depend on your role and your day-to-day work activities and should be agreed through discussions with your line manager. The majority of our digital teams are based in our Cardiff head office. The successful candidate must have the ability to regularly attend our Cardiff office to carry out remedial work on our physical infrastructure on a weekly basis in line with our on-call rota.

Job description

The successful candidate will be part of a small network team that supports both on-site and cloud-hosted network services on a 24/7/365 basis (this includes participating in an on-call rota). In addition, you'll be working with colleagues to deliver infrastructure improvements to the existing LAN and WAN infrastructure.


  • Providing technical maintenance and support for the Companies House network, both on premise and cloud.
  • Attending the Cardiff office at least one day a week, and more often if required e.g. upgrading network equipment on site.
  • Participating in an on-call rota that provides 24/7/365 cover. Please note that this will attract an additional payment.
  • Assisting in enhancements to cloud-based services and migration of remaining on premise systems.
  • Implementing technical improvements and upgrades to the on-premise network infrastructure e.g. wi-fi networks and firewalls.
  • Working closely with colleagues both within the Network Team and the wider IT Services team to resolve service-affecting incidents.

About us

You would be joining a great team of people to work on maintaining our on-premise network infrastructure and help our users and customers stay connected to each other and the resources they need. We are looking for someone with a keen interest in being part of our journey from traditional on-premises networking to the cloud.

The Network Team is part of the IT Services Team which sits in the Digital and Technology Directorate. The Directorate has over 200 internal staff who are supplemented by external contractors and third-party resources as necessary.

The IT Services Team is responsible for day-to-day support and maintaining the availability of all IT services within the organisation including both the customer-facing systems used by the public and the internal systems used by staff.

Inclusive and diverse teams are important to us. We're keen to create an environment that works for everyone, and we particularly encourage applications from different underrepresented demographics.

We'll support you to meet other commitments and help you find a better work-life balance.

The role will be based at the Cardiff office but hybrid working is encouraged. You will be expected to attend the Cardiff office at least one day per week and whenever network support or technical upgrade requires a physical presence.

Person specification

We are looking for the following experience, which will be assessed at sift and at interview. Please give as much detail as possible within the Personal Statement and Work History section about your experiences and technical skills. We will be sifting on the criteria stated in the bullet points below.

We are looking for individuals with:

  • A high level of technical skills (see the knowledge and experience section).
  • Experience of delivering network infrastructure upgrades.
  • Experience of working within a 24/7 support environment.
  • Troubleshooting and problem-solving skills.
  • Confidence in engaging with end users at all levels across the organisation.

We are looking for knowledge and experience in the following technologies:

  • Layer 2 and layer 3 switched and routed networks, using Cisco hardware.
  • Wireless LANs using Cisco APs and WLCs.
  • On-premise remote access technologies such as VPN.
  • WAN technologies ideally MPLS and IPSEC VPN.
  • Routing protocols, in particular EIGRP and BGP.
  • Networking services such as DHCP and DNS.
  • Network security in on-premise environments including firewall technologies (traditional layer3/4 and WAF) and DDoS.
  • Network management tools such as Cisco Prime or DNA Center / Catalyst Centre.
  • Cloud environments specifically AWS and Azure e.g. Transit Gateway.
  • Cloud security e.g. AWS Network Firewall, WAF and Azure Firewall.
  • Cloud based ZTNA solutions.
  • Awareness of Microsoft Windows services such as Active Directory.
  • Certified in Cisco technologies or working towards qualification.

We would encourage applications from individuals wishing to develop their skills in the areas listed as desirable as there will be opportunities for training and development.


We'll assess you against these behaviours during the selection process:

  • Changing and Improving
  • Working Together
  • Managing a Quality Service

Technical skills

We'll assess you against these technical skills during the selection process:

  • The successful candidate will be at our Cardiff Office at least 1 day/wk (possibly more if workload requires) as well as be part of an on-call rota. Have you worked with an on-call rota previously? How you would support this requirement? (max 250wds)


Alongside your salary of £33,134, Companies House contributes £9,598 towards you being a member of the Civil Service Defined Benefit Pension scheme.

Join us at Companies House and experience the difference of working within a culture that values you, not only as an employee, but as an integral part of our Companies House team.

We believe that our success is driven by the well-being and satisfaction of our team members at all levels of the organisation. At Companies House we're committed to providing a comprehensive benefits package that goes beyond the ordinary, ensuring your career journey with us is not only fulfilling, but also rewarding. We pride ourselves on offering a quality work-life balance with our employee wellbeing being central to our working practices.

Successful candidates must meet the security requirements for Security Check (SC) before they can be appointed. To gain SC clearance you will normally need to have been a UK resident for a minimum of 5 years and will need to successfully complete all stages of the vetting process. 

Next Steps

Click 'Apply Now' to be taken to our main advert Civil Service Jobs where you can see more details regarding the role, the incredible benefits we have to offer and what it's like to work in Companies House.

This role closes on 30 June 2024.

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