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Senior Network Engineer

Job in York and North Yorkshire, York, North Yorkshire, YO1, England, UK
Listing for: OneAdvanced Limited
Full Time position
Listed on 2026-10-14
Job specializations:
  • IT/Tech
    Systems Engineer, Cybersecurity, Network Security
Salary/Wage Range or Industry Benchmark: 70000 - 100000 GBP Yearly GBP 70000.00 100000.00 YEAR
Job Description & How to Apply Below

Join One Advanced

The Senior Network Engineer will work as part of a customer centric squad providing project technical resources alongside a multi-disciplined team. Working to scope and deliver solutions alongside the customer architectural team.

You will be comfortable working at CCNP or CCIE level or have the equivalent experience in designing and configuring network and security technologies, covering on-premise, cloud and hybrid network solutions. You will be experienced in delivering technical projects and defining technical direction.

Communication and collaboration are paramount in this role, you will work closely with a variety of internal and external business stakeholders and will be continually engaged and collaborating.

What You Will Do
  • Responsibilities include planning, design and implementation for customer site, data centre and Azure cloud. You will produce customer-facing high quality HLD and LLD documentation.
  • Working with customer project managers, architecture and other team members to develop technical solutions.
  • Where required, provide technical support and early life support, and take ownership of technical investigations into complex problems, continuing to work on them until a resolution or workaround can be implemented.
  • Provide technical input and governance to the problem and update stakeholders at regular intervals as the technical investigation continues.
  • Attend relevant customer specific meetings as and where required. Examples may include presenting changes to the change advisory board, providing technical input into low level designs.
  • Ensure compliance to relevant standards (i.e. ISO 27001, 9001) and security (i.e. CIS, STIG) to help ensure we control, report and adequately measure and handle risks the customer faces.
  • As an effective and highly capable team member, you will self-manage your workload. You will also need to be able to mentor and develop other engineers in the wider technical support teams.
  • Author new technical documentation, for example, for new solutions or changes in configuration required to adhere to updated security standards that is structured and relevant to the audience.
  • Travel to customer data centre and customer sites as required (expenses covered).
  • Work on other tasks as required to support wider business plans and initiatives.
What You Will Have
  • Experience with Cisco ASA, Firepower and Fortigate firewalls, also Nexus and Catalyst switches.
  • Experience with Azure networking solutions and integration with traditional WAN/LAN configuration.
  • Strong understanding of both Network and Security principles including routing and switching protocols, fabric infrastructure, storage networking.
  • Exposure to Cisco Wireless LAN solutions, particularly Meraki.
  • In-depth knowledge of network security best practices.
  • Be self-motivated, tenacious, disciplined, enthusiastic and resilient
  • Excellent communication verbal and written, being able to operate at all levels and articulate messages to a variety of different audiences. Understand people and cultural differences to build good relationships with colleagues.
  • Have excellent problem-solving skills and be able to devise and implement strategies beneficial to Advanced and our client.
  • Capability to author and update infrastructure, support and procedural documentation.
  • Keen willingness tomentor othersin the team and wider department on technologies within your field of expertise.
  • Capability to project manage in an informal capacity; able to apply appropriate project methodology to plan, execute and report on work in a structured way, with effective time management skills.
  • Ability to multitask and prioritise under pressure

Please note, applicants must have the legal right to work in the UK at the time of application.

What We Do For You

Wellbeing that means something

  • 26 days’ holiday + bank holidays (and the option to buy more) plus 1 paid volunteering day every year
  • Exceptional family leave, 26 weeks fully paid maternity/adoption, 4 weeks fully paid paternity, 22 weeks fully paid shared parental leave, plus 5 days paid bereavement leave
  • Robust sick pay of up to 13 weeks full pay + 13 weeks half pay
  • 24/7 Employee Assistance Programme for confidential support
  • Private medical insurance for everyone, no medical-history exclusions

Financial benefits that have your back

  • Performance-based rewards tailored to your role, from company-wide bonuses to OTE and commission structures
  • Income protection: up to 75% salary for 5 years if you ever need it
  • Pension with 5% matched company…
Position Requirements
10+ Years work experience
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