Find a job 
Featured Companies 
Featured Universities 
For Companies At a Glance
- Tasks: Design and manage complex network infrastructures using Cisco ACI and SDN technologies.
- Company: Join a leading tech firm focused on innovative networking solutions.
- Benefits: Enjoy competitive pay, flexible working arrangements, and opportunities for professional growth.
- Why this job: Be part of a dynamic team that values collaboration and cutting-edge technology.
- Qualifications: Must have active SC Clearance and deep expertise in Cisco networking.
- Other info: This is an Inside IR35 contract role; only cleared candidates will be considered.
The predicted salary is between 48000 - 72000 £ per year.
We are seeking an experienced Senior Network Engineer with deep expertise in Cisco ACI, SDN technologies, and broader traditional networking and security solutions. The successful candidate will be responsible for the design, implementation, automation, and operational support of complex network infrastructures, ensuring high availability and performance across our environment.
Only candidates with active SC Clearance will be considered. This role is Inside IR35.
Key Responsibilities:
- Lead and support the deployment, configuration, and management of Cisco ACI SDN and MSO environments.
- Provide operational support and troubleshooting for Cisco networking and security appliances including Nexus, Catalyst switches, and Firepower/ASA firewalls.
- Design, implement, and optimize wireless networks and load balancing solutions (F5 BigIP, BigIQ).
- Manage campus networking environments, firewall security, and network monitoring solutions.
- Utilize automation tools like Ansible to streamline and automate manual networking tasks.
- Work with Infoblox Suite (IPAM, DNS, DHCP) for efficient IP address and domain management.
- Implement and maintain network monitoring tools such as Entuity, PRTG, and Prime Infrastructure.
- Adhere to ITIL processes and contribute to continuous process improvement initiatives.
- Collaborate cross-functionally with infrastructure, security, and application teams.
Minimum Qualifications:
- Active SC Clearance (mandatory).
- Deep knowledge and hands-on experience with Cisco ACI SDN and MSO (development and operations).
- Certification in Cisco networking (minimum CCNP level) or equivalent industry experience.
- Proven experience with traditional Cisco networking/security appliances: Nexus, Catalyst, ACI, Firepower/ASA.
- Strong expertise in at least 3 of the following areas:
- Cisco ACI
- Wireless networking
- F5 load balancing (BigIP, BigIQ)
- Cisco campus networking
- Firewalls and Flow Analyzers (Checkpoint, Cisco Firepower, Algosec)
- Infoblox Suite (IPAM, DNS, DHCP)
- Network Monitoring/Management Tools (Entuity, PRTG, Prime Infrastructure)
Preferred Skills:
- Experience with Software Defined Networking (SDN) automation using Ansible or similar tools.
- Strong scripting skills for network automation and orchestration.
- ITIL v3 Foundation certification (or good knowledge of ITIL best practices).
- Excellent interpersonal and communication skills, with a proactive and solution-oriented mindset.
Important Notes:
- This is an Inside IR35 contract role.
- Active SC Clearance is a must — candidates without clearance will not be considered.
Sr. Network Engineer (Contract) employer: Gazelle Global
Contact Detail:
Gazelle Global Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Sr. Network Engineer (Contract)
✨Tip Number 1
Make sure to highlight your active SC Clearance in any conversations or networking opportunities. This is a mandatory requirement for the role, and showcasing it early can set you apart from other candidates.
✨Tip Number 2
Engage with professionals in the Cisco ACI and SDN communities. Attend relevant meetups or webinars to expand your network and gain insights that could be beneficial during interviews.
✨Tip Number 3
Familiarise yourself with the specific tools mentioned in the job description, such as Ansible for automation and Infoblox for IP management. Being able to discuss your experience with these tools can demonstrate your readiness for the role.
✨Tip Number 4
Prepare to discuss your previous experiences with troubleshooting and optimising network infrastructures. Be ready to provide examples of how you've ensured high availability and performance in past roles, as this will resonate well with the hiring team.
We think you need these skills to ace Sr. Network Engineer (Contract)
Some tips for your application 🫡
Highlight Relevant Experience: Make sure to emphasise your experience with Cisco ACI, SDN technologies, and traditional networking solutions in your CV and cover letter. Use specific examples that demonstrate your expertise in these areas.
Showcase Certifications: Clearly list your Cisco certifications, especially if you hold a CCNP or equivalent. This will help establish your qualifications and align with the job requirements.
Detail Your Technical Skills: In your application, provide a detailed account of your technical skills related to the key responsibilities mentioned in the job description, such as automation tools like Ansible, network monitoring tools, and firewall management.
Address SC Clearance: Since active SC Clearance is mandatory, make sure to mention your clearance status prominently in your application. If you have it, state it clearly; if not, it's best to refrain from applying.
How to prepare for a job interview at Gazelle Global
✨Showcase Your Technical Expertise
Be prepared to discuss your hands-on experience with Cisco ACI, SDN technologies, and traditional networking solutions. Highlight specific projects where you've successfully implemented or managed these technologies, as this will demonstrate your capability to handle the responsibilities of the role.
✨Demonstrate Problem-Solving Skills
Expect to be asked about troubleshooting scenarios involving Cisco networking and security appliances. Prepare examples of past challenges you've faced and how you resolved them, particularly with Nexus, Catalyst switches, and Firepower/ASA firewalls.
✨Familiarise Yourself with Automation Tools
Since automation is a key part of the role, brush up on your knowledge of tools like Ansible. Be ready to discuss how you've used automation to streamline networking tasks in previous positions, as this will show your ability to enhance operational efficiency.
✨Communicate Effectively
Strong interpersonal and communication skills are essential for this role. Practice articulating your thoughts clearly and concisely, especially when discussing technical concepts. This will help you convey your ideas effectively during the interview and demonstrate your collaborative mindset.
