Senior Network Engineer


Colgate/ Hybrid

Report to:

Network Engineering Team Leader




Perm 37 hours a week 9am – 5:30pm Monday to Thursday, 9am – 5pm Friday

Company Overview :

Established in 2006, FluidOne is an award-winning provider of Connected Cloud Solutions with a £109m turnover and focus on customer service, consistently achieving one of the highest Net Promoter Scores (NPS) in the industry, securing 87 for May 2024. Underlying its services is FluidOne’s national fibre network, Platform One, which is the most connected network in the UK. FluidOne has a strong company culture enjoyed by 500 staff and was ranked in the top 50 Best Companies to work for in the UK awards 2023 and in the top 25 Technology companies to work for in the UK.

FluidOne supports the needs of 2500 customers, including 200 channel resellers, with services covering connectivity, SD-WAN, cyber security, IT managed services, mobile, IoT, UCaaS and CCaaS. Addressing the needs of SME, mid-market and Enterprise, FluidOne consults with its customers to design solutions that complement their in-house IT structures. FluidOne takes complex hybrid multi-site environments and makes them simple and secure, so end-users can access their business applications wherever they are.

Led by CEO Russell Horton, co-founder Chris Rogers (who started the business in 2006), CFO Roy Hastings and CRO Simon Ward, the management team is backed by Livingbridge to support their ambitious long-term strategy.


Full Job Specification:

Working within the Networking Engineering Team to deliver networking solutions for our clients and the primary role will be to deliver multiple projects, working closely with both the client, and our project management team.

The successful candidate will have close involvement with our client base as well as working with our existing technical team to deploy network solutions and working as part of a resolver group for troubleshooting technical issues and support activities when required.

This job would be perfect for someone with experience within a similar role looking for a new challenge. With focus on connectivity and networking, you will be fully supported and trained to gain the knowledge and skills required to reach your potential within this role, opening doors for progression within our expanding company.


Activities, Duties and Key Tasks:

  • Leading projects during project delivery.
  • Commissioning WAN circuits / MPLS / Ethernet / Internet.
  • Configuring and deploying Multi Vendor Devices (Switches, Routers and Firewalls) including SDWAN devices such as Fortinet, Cisco and Meraki.
  • Configuring, installation, and troubleshooting hardware.
  • Work within a multi-disciplinary technical team.
  • Receiving and owning issues; enquiries and change requests for support from clients and prioritise these requests accordingly.
  • Investigating and troubleshooting network availability and application problems and other requests for support.
  • Performing troubleshooting and diagnosis for issues using the technical resources and managements and monitoring tools available.
  • Perform logical and physical design activities. Design, develop, implement, tune and support network environments and equipment.
  • Implement complex hardware and software upgrades to meet capacity requirements.
  • Perform configuration changes to increase network coverage.
  • Liaison with 3rd parties, customers and site providers to ensure completion of tasks.
  • Processing / coordinating service requests (moves, adds & changes).
  • Ensuring that all processes are followed and all issues are owned through to resolution.
  • Ensuring health and safety of self and others
  • Undertaking all other reasonable requests/ tasks that may be required of the post as directed by Line Manager.


  • Adhering to quality communication standards defined by FluidOne.
  • Adhering to Fluid One’s Security and Data Protection and confidentiality Clauses.
  • Undertaking any other duties deemed suitable by management.
  • Maintaining job related training as required by management.


Experience / Qualifications:


  • Fortinet FCSS and 3+ years experience of working with Fortinet products.
  • GCSE Grade C or equivalent; Maths, English.
  • Cisco CCNA Technical Accreditation or equivalent experience.
  • Knowledge and competence of multi-site LAN & WAN environments including IP routing protocols, DNS, DHCP, WiFi and Security.
  • Proven knowledge and competence of WAN\LAN technologies and products.
  • Be competent at configuration and troubleshooting of WAN/LAN products, multi vendor skills would be a bonus.


  • Awareness of WAN/MPLS technologies.
  • Experience with working with ISP suppliers.



  • Subsidised Health and subsidised dental care.
  • Employee Assistance programme (EAP).
  • Life assurance (3 x salary).
  • Sodexo Discount Platform.
  • FluidOne breakfast and refreshments on working days.
  • Pension contribution- 5% company contribution.
  • Generous Holiday Entitlement.
  • One day off for Birthday.
  • Half price internet connectivity.
  • Ride2Work scheme.
  • Department incentives.
  • Volunteer day scheme.


How to apply:

Send CV with covering letter to with the job title as the subject field.

FluidOne is an equal opportunities provider and welcomes applications regardless of sex, marital status, ethnic origin, disability, religion, sexual orientation or age.