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Senior Network Engineer

2 months ago

London, UK, United Kingdom Janus Henderson Investors Full time

Why work for us?


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


Join a team of engineers that are responsible for designing, implementing, and maintaining the company's network infrastructure. You will work closely with other IT teams, vendors, and business stakeholders to ensure that the network is reliable, secure, and meets the needs of the organization.


  • Maintain a large network environment
  • Close audit findings as identified
  • Perform disaster recovery testing
  • Participate in team on-call rotation
  • Carry out other duties as assigned


What to expect when you join our firm


  • Hybrid working and reasonable accommodations
  • Generous Holiday policies
  • Excellent Health and Wellbeing benefits including corporate membership to ClassPass
  • 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
  • All employee events including networking opportunities and social activities
  • Lunch allowance for use within our subsidized onsite canteen



Key Responsibilities:


  • 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
  • Operate 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 LogicMonitor 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 SD-WAN
  • 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


Qualifications and Experience


  • Network design experience
  • 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


  • Mentoring
  • Leadership development programs
  • Regular training
  • Career development services
  • Continuing education courses


For those in scope of Knowledge & Competence (MiFID II)


Knowledge of financial markets, financial markets function and the impact of economic figures and national/regional/global events on markets

Understanding of issues relating to market abuse and anti-money laundering

Annual attestation