Senior Network Engineer

Premium Job From Companies House


Companies House

Listed on

15th March


Cardiff / Hybrid


£33,134 - £49,000

Salary Notes

Competitive + Benefits



This job has now expired please search on the home page to find live IT Jobs.

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. Hybrid working is available, the successful candidate must have the ability to attend our Cardiff office to carry out remedial work on our physical infrastructure.
About the job

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. You 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. 

You 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 will be expected to work with colleagues to deliver infrastructure improvements to the existing LAN and WAN infrastructure. 

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%. 


The responsibilities for the role includes:  

  • Member of the Network Team which provides 24/7/365 technical maintenance and support for the Companies House Network. This includes participating in an on-call rota.  Details can be discussed in more detail but would be on average once every 5 weeks, depending on team availability and business needs.  
  • Assisting with the implementation of the cloud (AWS & Azure) network infrastructure required to host all CH systems which are in the process of being migrated from on-premise to the cloud. 
  • Implementing technical improvements and upgrades to the network infrastructure. 

About us  

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.  

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

Person specification

We are looking for the following experience, which will be assessed at sift and at interview. Please address these bullet points below when writing your personal statement (excluding behaviours).  

We are looking for individuals with:  

  • A high level of technical skills as outlined below 
  • The drive and enthusiasm to support the network 
  • Experience of delivering network infrastructure upgrades 
  • Self-motivation and confidence in engaging with end users at all levels across the organisation 
  • The ability to be an excellent team player who is willing to work closely with colleagues both within the immediate Network team and the wider IT Services team in order to resolve any service-affecting incidents that arise 
  • Experience of working within a 24/7 support environment 

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

  • Cloud environments specifically AWS and Azure e.g. Transit Gateway, Azure Firewall 
  • Network security in on-premise and cloud environments including firewall technologies (traditional layer3/4 and WAF) and DDoS 
  • Layer 2 and layer 3 switched and routed networks, preferably using Cisco hardware 
  • Routing protocols, in particular EIGRP and BGP 
  • Configuration and management of remote access technologies e.g. Cisco VPN 
  • Wireless LANs preferably using Cisco APs and WLCs 
  • WAN technologies ideally MPLS and IPSEC VPN 
  • Network management tools such as WhatsUp Gold and Cisco Prime/DNA Center 
  • Ideally certified in Cisco technologies or working towards qualification 


Alongside your salary of £33,134, Companies House contributes £8,946 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. 

We celebrate diversity... 

As an equal opportunity employer, we celebrate diversity, being committed to ensuring we're representative of the citizens we serve and creating an inclusive environment. Everyone in Companies House brings something different, and so will you. To fulfil our commitment to recruiting and attracting diverse talent we welcome applications from underrepresented groups. We also welcome applications from Welsh speakers. 

We are proud to be a disability confident leader. Our recruitment process is fully inclusive and we can make adjustments as needed through our process. These could include having an interview buddy, extra time at interviews/assessments and receiving interview questions in advance, to name a few. We will be happy to discuss any person-centred adjustments, please contact us.

Where will you be working? 

You will be aligned to our Cardiff Office, where we are currently using a hybrid approach to the way we work. 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. The degree of choice you have will depend on business need, your role and your day-to-day work activities and will be discussed at offer stage.

We're currently exploring options for new office space in the Cardiff and surrounding areas as we're due to be moving from our current building - join us on this journey where we can support you in your career and professional growth. Details are still being confirmed about our new building and we're keeping all our colleagues updated. 

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