Network Administrator/Engineer

Company

Cognizant

Location

London Area, United Kingdom

Posted At

9/12/2025

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Description

This is an excellent opportunity for Network Automation Engineer Role professionals to be part of leading-edge technology projects. Cognizant’s Cloud, Infrastructure & Security Services Practice provides end-to-end solutions covering architecture, design, implementation, management, and on-going support across the entire enterprise technology infrastructure. Our services include a spectrum of management, consulting, and systems integration services to help our clients maximize value in their infrastructure resources, while optimizing infrastructure performance and cost.

The role will require minimum 4 days working from office.

Responsibilities:

Design, develop, and maintain automation scripts and tools using Python, Bash, PowerShell, and Ansible.
Implement and manage global monitoring and network management systems.
Configure, troubleshoot, and optimize TCP/IP stack and application protocols (DHCP, DNS, HTTP, SNMP, NTP, FTP).
Manage and support networking protocols and concepts including BGP, OSPF, VRF, NAT, clustering, high availability, load balancing, and QoS.
Support enterprise LAN and WAN technologies, including SD-WAN solutions.
Implement and maintain network security solutions (firewalls, VPN, web proxy, NAC, IPS/IDS).
Deploy and manage enterprise wireless solutions (preferably Aruba).
Support and integrate public cloud networking concepts in AWS and Azure.
Collaborate with cross-functional teams to ensure secure and efficient network operations.
Document network designs, procedures, and policies.
Stay updated with emerging technologies and recommend improvements for scalability and security.

Required Skills:

Strong experience in automation scripting and tools (Python, Bash, PowerShell, Ansible).
Hands-on experience with global monitoring and network management systems.
In-depth understanding of TCP/IP stack and related application protocols (DHCP, DNS, HTTP, SNMP, NTP, FTP).
Proficiency in networking protocols: BGP, OSPF, VRF, NAT, QoS, high availability, clustering, and load balancing.
Experience with LAN, WAN, and SD-WAN technologies.
Strong knowledge of network security concepts (firewalls, VPN, web proxy, NAC, IPS/IDS).
Knowledge of enterprise wireless solutions (Aruba experience preferred).
Familiarity with public cloud networking (AWS, Azure).
Strong analytical, troubleshooting, and problem-solving skills.
Good communication and documentation skills.
Relevant certifications (CCNA, CCNP, AWS, Azure, etc.) will be an added advantage.