Sr Network Engineer

Requisition ID 30109 – Posted – London – Janus Henderson

A career at Janus Henderson is more than a job, it’s about investing in a brighter future together.

Our Mission at Janus Henderson is to help clients define and achieve superior financial outcomes through differentiated insights, disciplined investments, and world-class service. We will do this by protecting and growing our core business, amplifying our strengths and diversifying where we have the right.

Our Values are key to driving our success, and are at the heart of everything we do:

Clients Come First – Always | Execution Supersedes Intention | Together We Win | Diversity Improves Results | Truth Builds Trust

If our mission, values, and purpose align with your own, we would love to hear from you!

Your opportunity

• Design and operate Cisco ACI infrastructure
• Automate network tasks and processes using Python, Ansible, and Terraform
• Design, implement and maintain the company’s network infrastructure, including Cisco IOS-XE routers and switches, Cisco Nexus datacenter switches, and Cisco 9800 Wireless LAN Controllers
• Configure and manage Palo Alto firewalls, including Panorama, and ensure that security policies are up to date and aligned with industry and internal standards
• Implement and manage network access control using Cisco ISE for 802.1x and TACACS
• Manage F5 Big-IP load balancers to ensure high availability and performance of critical applications
• Maintain and troubleshoot BGP and OSPF routing protocols and participate in the design and implementation of routing and switching solutions
• Monitor the network using SolarWinds network monitoring solutions and take proactive measures to prevent network outages and performance issues
• Manage Wi-Fi in a large office environment and ensure that wireless network performance meets business requirements
• Configure and manage WAN Technologies such as Cisco WAAS & VWAAS and SD-WAN Solutions
• Implement and manage cloud networking concepts in Microsoft Azure, including virtual networks, subnets, security groups, and ExpressRoute connections
• Work in a global, enterprise-class, mission-critical, 7x24x365 network/telecommunication environment
• Mentor junior network engineers and contribute to knowledge sharing within the team
• Work occasional weekends and participate in the on-call rotation

What to expect when you join our firm

• Hybrid working and reasonable accommodations
• Paid volunteer time to step away from your desk and into the community
• Support to grow through professional development courses, tuition/qualification reimbursement and more
• All-inclusive approach to Diversity, Equity, and Inclusion
• Maternal/paternal leave benefits and family services
• Complimentary subscription to Headspace – the mindfulness app
• Corporate membership to ClassPass and other health and well-being benefits
• Unique employee events and programs including a 14er challenge
• Complimentary beverages, snacks, and all employee Happy Hours

Must have skills

• CCNP certification or equivalent experience
• Strong experience with Cisco networking technologies, including Cisco IOS-XE routers and switches, Cisco Nexus datacenter switches, and Cisco 9800 Wireless LAN Controllers
• Expertise in Palo Alto firewalls, including Panorama, and network access control using Cisco ISE for 802.1x and TACACS
• Good understanding of F5 Big-IP load balancers, BGP and OSPF routing protocols, and SolarWinds network monitoring solutions
• Knowledge of cloud networking concepts in Microsoft Azure and virtualized datacenter environments
• Strong automation and scripting skills using Python, Ansible, and Terraform
• Excellent communication and interpersonal skills, with the ability to work collaboratively with other IT teams, vendors, and business stakeholders

Potential for growth

• Regular training
• Continuing education courses

You will be expected to understand the regulatory obligations of the firm, and abide by the regulated entity requirements and JHI policies applicable for your role.

At Janus Henderson Investors we’re committed to an inclusive and supportive environment. We believe diversity improves results and we welcome applications from all backgrounds. Don’t worry if you don’t think you tick every box, we still want to hear from you! We understand everyone has different commitments and while we can’t accommodate every flexible working request we’re happy to be asked about work flexibility and our hybrid working environment. If you need any reasonable accommodations during our recruitment process, please get in touch and let us know at

Janus Henderson (including its subsidiaries) will not maintain existing or sponsor new industry registrations or licenses where not supported by an employee’s job functions (as determined by Janus Henderson at its sole discretion).

All applicants must be willing to comply with the provisions of Janus Henderson Investment Advisory Code of Ethics related to personal securities activities and other disclosure and certification requirements, including past political contributions and political activities. Applicants’ past political contributions or activity may impact applicants’ eligibility for this position. Janus Henderson is an equal opportunity /Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. All applications are subject to background checks.

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