Senior Network Engineer

Senior Network Engineer

Full-Time 60000 - 80000 £ / year (est.) No working from home possible
96 Morgan Stanley UK Ltd

At a Glance

  • Tasks: Implement and support enterprise-scale network infrastructure while leading critical security and maintenance activities.
  • Company: Join a leading financial services firm committed to diversity and inclusion.
  • Benefits: Competitive salary, comprehensive benefits, and opportunities for professional growth.
  • Other info: Collaborative culture with a focus on continuous improvement and innovation.
  • Why this job: Make a real impact on global network reliability and security in a dynamic environment.
  • Qualifications: 8+ years of experience with network architectures and strong technical skills.

The predicted salary is between 60000 - 80000 £ per year.

What you’ll do in the role

  • Implement and support enterprise‑scale network infrastructure across data centres, campus, and branch environments.
  • Provide Tier‑3 support and technical leadership during major incidents and escalations.
  • Develop and maintain network standards, update documentation, and engineering procedures.
  • Lead planning, testing, risk assessment, and deployment of critical security and infrastructure patches across production environments, ensuring timely rollout with zero unplanned outages.
  • Drive execution of complex, large‑scale maintenance activities across global environments with minimal customer or business impact.
  • Coordinate maintenance windows, rollback plans, validation testing, and post‑implementation reviews.
  • Ensure compliance with security, audit, and regulatory requirements through timely remediation of vulnerabilities.
  • Partner with Security, Infrastructure, Application, and Operations teams to prioritize remediation activities and maintain resilient business services.
  • Coordinate end‑to‑end remediation activities including maintenance windows and pre/post validations across multiple stakeholders, including business application owners, multiple infrastructure teams (Unix, Load Balancer, Firewall, etc.), security teams, and all relevant third‑party vendors (Cisco/Arista, etc.).
  • Maintain high availability and resilience of business‑critical services while improving network reliability and security posture.
  • Monitor network performance and proactively identify risks before they impact production.
  • Develop automation solutions using Python, Ansible, or similar tools to improve operational and deployment efficiency.
  • Standardize deployment procedures and reduce manual intervention through automation to lower operational risk.
  • Drive operational excellence through continuous process improvement and infrastructure optimization.

What you’ll bring to the role

  • Strong hands‑on experience with Leaf‑Spine Architectures across Cisco and Arista Platforms.
  • Ethernet technologies: STP, 802.1Q, VPC, Multilayer Switching.
  • IP Routing protocols: RIP, OSPF, BGP, MPBGP, TCP/IP.
  • Vx LAN.
  • Platform knowledge on Cisco Switching & Routing Platforms.
  • Platform knowledge on Arista Switching platforms.
  • Wireshark, Infoblox, HPNA, Splunk, Sevone (plus).
  • Good to have some cloud and wireless knowledge.
  • Familiarity with JIRA for project and task management, specifically working in Agile.
  • Experience with Ansible, Python, Terraform, Github.
  • At least 8 years of relevant experience.
  • Proven experience executing critical security patching and production network upgrades in large‑scale environments – global data centres and branch sites.
  • Experience operating in financial services, trading, telecommunications, cloud, or other mission‑critical environments.
  • Demonstrated ability to perform complex maintenance and migration activities during scheduled change windows.
  • Strong understanding of network resiliency, high availability, and disaster recovery principles.
  • Willingness to support weekend implementations, emergency changes, and critical incident response when required.
  • Preferred CCNP, CCIE, or equivalent industry certifications.
  • Preferred knowledge of network automation frameworks.
  • Certified Persons Regulatory Requirements

If this role is deemed a certified role, the holder may be required to meet mandatory regulatory qualifications or internal benchmarks.

Equal Employment Opportunity

Morgan Stanley is an equal‑opportunity employer committed to building and maintaining a workforce that is diverse in experience and background.

Our recruiting efforts reflect our strong commitment to a culture of inclusion, where individuals are hired, developed, and advanced based on their skills and talents.

Our workforce reflects a broad cross‑section of the global communities in which we operate, bringing a variety of backgrounds, talents, perspectives, and experiences.

For more information, please visit: https://www. morganstanley. com/people-opportunities/eeo.

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Senior Network Engineer employer: 96 Morgan Stanley UK Ltd

At Morgan Stanley, we pride ourselves on being an exceptional employer, particularly for our Java Software Engineer role within the dynamic Investment Banking & Global Capital Markets Technology team. Our inclusive work culture fosters innovation and collaboration, providing employees with ample opportunities for professional growth and development while working on cutting-edge solutions that shape the future of finance. With flexible working arrangements and a commitment to diversity, we empower our team members to thrive both personally and professionally in a supportive environment.

96 Morgan Stanley UK Ltd

Contact Details:

96 Morgan Stanley UK Ltd Recruitment Team

We think you need these skills to ace Senior Network Engineer

Enterprise-scale network infrastructure implementation
Tier-3 support
Technical leadership
Network standards development
Risk assessment
Security patch deployment
Maintenance coordination