Network Security Consultant

Ascendion
London
Description
The Network Security Consultant will provide delivery leadership within the Professional Services consultancy team primarily aligned to clients in the USA region. This client-facing role includes the following responsibilities.
Personal/General
Maintain day to day records of project work to allow accurate billing and reporting of consultancy time;
* Maintain effective network of business contacts within Verizon and their partner community;
* Maintain and grow their own knowledge to ensure this maintains fully relevant to the network security services practice and its clients;
* Have strong presentation and written/verbal communications skills at multiple levels of an organization;
* Have a minimum of 5+ years of network security consulting, design and delivery experience.
As a Network Security Consultant you will bring –
Technical expertise with very strong skills in most of the technologies below:
* Firewalls: Checkpoint, Juniper, Palo Alto, Cisco ASA/FTD, Fortinet;
* Proxy Services: Bluecoat (forward/reverse proxy), Zscaler;
* Load Balancers: F5 (LTM/GTM);
* IDP/IPS: FirePower/Sourcefire IPS/IDS, McAfee
* Identity & Access Management: Cisco ISE, Aruba Clearpass policy manager;
* Routing & Switching: (CCNP/CCNA level), and good knowledge of SD-WAN deployments;
* Good understanding of key technologies such as: VRF, dynamic routing (EIGRP/BGP/OSPF), MPLS, DMVPN, GRE, IPSec VPN
* Remote Access VPN: GlobalProtect, Pulse Secure, Cisco AnyConnect;
* Knowledge of Cloud deployments (Azure/AWS/GCP);
* Experience with building, maintaining, reviewing all configurations/settings/policies on chosen technologies;
* Experience of multi-vendor, managed outsourcing environments;
* Experience working with operational environments following ITIL frameworks;
* Excellent documentation and presentation skills;
* Excellent troubleshooting skills (technical and non-technical);
* Ability to review processes and procedures – and improve them;
* Experience participating in network & system security projects to provide:
* Business requirements analysis and support for Solutions Architects;
* Production of detailed infrastructure designs including physical and virtual aspects of security components;
* Migration of complex legacy infrastructures to new managed security services platforms;
* Understanding and demonstrable experience working in an Agile environment and actively participating in a Scrum team;
* Experience using Jira to help define user stories, tasks and associated estimates.
It is likely that you will have gained some of the following professional qualifications:
* CCNA/CCNP (Enterprise/Security/Data Centre);
CISSP or equivalent;
* Palo Alto (PCNSA/PCNSE);
* Checkpoint (CCSA/CCSE);
* Fortinet (NSE)
Posted 2025-07-25

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