Senior Network Engineer

Senior Network Engineer

Full-Time 48000 - 72000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Manage and optimise complex network systems while solving technical challenges.
  • Company: Join a leading tech firm in Aldermaston, UK with a focus on security.
  • Benefits: Competitive salary, flexible working hours, and opportunities for professional growth.
  • Why this job: Be at the forefront of network engineering and make a significant impact.
  • Qualifications: Experience in large network environments and strong problem-solving skills required.
  • Other info: Work in a dynamic environment with potential for career advancement.

The predicted salary is between 48000 - 72000 £ per year.

We are looking for a Senior Network Engineer at Aldermaston, UK - Onsite.

Security Clearance: Active DV Clearance is a must have.

Willingness to work flexibly and to occasionally work evenings and weekends where exceptional circumstances require it. Travel to remote sites when required which may involve overnight stays.

REQUIREMENTS

  • Fundamental knowledge of networking.
  • Experience of support in a large and complex network environment at a Senior network engineering level.
  • Good technical investigation and problem‑solving skills.
  • Juniper Technologies: EX, QFX, switch configuration, SRX, vSRX firewall and policy config, Junos Space, Security Director, Apstra.
  • Experience in IT service management and delivery based on ITIL service management standards.
  • Experience working with Juniper Virtual Chassis and Clustering technology.
  • Experience with configuring/troubleshooting EVPN/VXLAN on Juniper equipment.
  • Experience of configuring GRE tunnels and Routing Instances/VRFs.
  • Experience of PKI / certificate generation and renewal.
  • Strong routing skills (OSPF, BGP), firewall configuration, WAN/LAN design, device clustering, high availability.
  • Security Platforms: FortiGate, F5 BIG-IP (Load Balancing / AWAF), Pulse Secure / Ivanti, high‑grade encryption.
  • Identity & Access Management: Cisco ISE (full lifecycle), Windows NPS (RADIUS / 802.1X).
  • Core Network Services: IPAM, DHCP, DNS.
  • Effective communication with technical and non‑technical stakeholders.
  • Ability to document processes and configurations clearly.
  • Juniper and Cisco certification but experience is more important.
  • Ideally experience of working in a secure environment.
  • Extreme Switch knowledge desirable.
  • Experience / certification with at least one of the major network vendors - JNCIS-ENT, JNCIS-DC (preferably JNCIP-DC), JNCIA-SEC.

Senior Network Engineer employer: GIOS Technology

At our Aldermaston location, we pride ourselves on being an exceptional employer that values innovation and collaboration. Our work culture fosters professional growth through continuous learning opportunities and a supportive environment, ensuring that our Senior Network Engineers can thrive in their roles. With competitive benefits and the chance to work on cutting-edge technology in a secure setting, we offer a rewarding career path for those looking to make a meaningful impact.
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Contact Detail:

GIOS Technology Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Network Engineer

✨Tip Number 1

Network with industry professionals! Attend meetups or online forums related to network engineering. This way, we can get insider info on job openings and make connections that could lead to opportunities.

✨Tip Number 2

Show off your skills in practical ways! Consider setting up a home lab to demonstrate your expertise with Juniper technologies. We can share our projects on LinkedIn to catch the eye of recruiters.

✨Tip Number 3

Prepare for interviews by brushing up on common technical questions and scenarios. We should practice explaining our problem-solving process clearly, as communication is key in this role.

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, we often have exclusive roles listed there that you won’t find anywhere else.

We think you need these skills to ace Senior Network Engineer

Juniper Technologies
Networking
Technical Investigation
Problem-Solving Skills
ITIL Service Management
EVPN/VXLAN Configuration
GRE Tunnels Configuration
Routing Skills (OSPF, BGP)
Firewall Configuration
WAN/LAN Design
Device Clustering
High Availability
Identity & Access Management (Cisco ISE, Windows NPS)
Core Network Services (IPAM, DHCP, DNS)
Effective Communication

Some tips for your application 🫡

Tailor Your CV: Make sure your CV is tailored to the Senior Network Engineer role. Highlight your experience with Juniper technologies and any relevant certifications. We want to see how your skills match what we're looking for!

Showcase Your Problem-Solving Skills: In your application, don’t just list your technical skills; give us examples of how you've tackled complex networking issues in the past. We love seeing your thought process and how you approach challenges.

Be Clear and Concise: When writing your cover letter or application, keep it clear and to the point. Use straightforward language to explain your experience and why you're a great fit for the role. We appreciate clarity!

Apply Through Our Website: Make sure to apply through our website! It’s the best way for us to receive your application and ensures you’re considered for the position. Plus, it’s super easy to do!

How to prepare for a job interview at GIOS Technology

✨Know Your Juniper Inside Out

Make sure you brush up on your knowledge of Juniper technologies, especially the EX and QFX series. Be ready to discuss your experience with switch configuration, SRX firewalls, and any troubleshooting you've done with EVPN/VXLAN. The more specific examples you can provide, the better!

✨Show Off Your Problem-Solving Skills

Prepare to share instances where you've tackled complex network issues. Think about the technical investigations you've led and how you approached problem-solving in a large network environment. Highlighting your analytical skills will impress the interviewers.

✨Communicate Clearly

Since effective communication is key, practice explaining technical concepts in simple terms. You might be asked to explain your processes to non-technical stakeholders, so being able to articulate your thoughts clearly will set you apart.

✨Flexibility is Key

Be ready to discuss your willingness to work flexible hours and travel when necessary. Share any past experiences where you've adapted to changing circumstances or worked outside of regular hours, as this shows your commitment to the role.

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