Network Security jobs in United Kingdom

The Senior Specialist - IT Security Operations role is responsible for ensuring the availability and efficient operations of MMC security infrastructure worldwide while enforcing security policies and reducing risk to Marsh & McLennan Companies. CyberSecurity Operations is a crucial role within MMC. Technical expertise, combined with positive, collaborative, can-do attitudes are required to make this team successful. Technologies include next-generation firewalls within the cloud and on-premises, web application firewalls, proxies, advanced malware prevention, remote access, data loss prevention, and intrusion detection / prevention systems. We will count on you to : Daily tasks consist of but are not limited to :

• Tier II-IV troubleshooting incident
• Change and configuration management
• Policy optimization
• Infrastructure management
• Capacity management
• Patch and OS management
• Event monitoring and alerting
• Vulnerability management
• Cybersecurity Incident Response
• Security Projects
• Risk Reduction through policy optimization and audit
  5+ years of network security experience within large-scale operations.
• One or more of the following : Cisco ASA, FirePower, Palo Alto, BlueCoat Proxy, Zscaler, F5 ASM FireEye
• Expertise knowledge of TCP / IP and related protocols and with collecting and evaluating HTTPS & TCP / IP dumps using Wireshark, HTTPWatch, tcpdump, Fiddler, and similar tools.
• Strong analytical, problem-solving, and root cause analysis skills relating to security operations technologies.
• Excellent verbal, written and collaborative interpersonal communication skills.
• Working knowledge of Unix / Linux CLI.
• What makes you stand out?
• Administration of Blue Coat Proxy SG 250-430 certification.
• Blue Coat Proxy Administrator or Professional (BCCPA or BCCPP) certification.
• PaloAlto Networks PCNSE v9 certification.
• FireEye HX & NX experience and certifications.
• F5 Application Security Manager (ASM) expertise & Exam 303-BIG-IP ASM Specialist.
• Cisco ASA & Firepower with CCNA CyberOps, CCNA Security, and / or CCNP Security certifications.
• Experience operating within AWS and Azure environments.
• SANS / GIAC certifications
  We help you be your best through professional development opportunities, interesting work, and supportive leaders;
• We foster a vibrant and inclusive culture where you can work with talented colleagues to create new solutions and have an impact for colleagues, clients, and communities;
• Our scale enables us to provide a range of career opportunities, as well as benefits and rewards to enhance your well-being;
• A yearly budget and the opportunity to build your flexible benefits package (up to 20% of your annual salary);
• 30+ days off (25 legal days off, 1 extra day off on your birthday, public holiday replacement days, extra buy / sell from your benefits budget);
• Performance Bonus scheme;
• Matching charity contributions, charity days off, and the Pay it Forward charity challenge;
• Core benefits - Pension, Life and Medical Insurance, Meal Vouchers, Travel Insurance;
• Marsh McLennan is a global leader in risk, strategy and people, advising clients in 130 countries across four businesses : Marsh, Guy Carpenter, Mercer and Oliver Wyman . With annual revenue of $24 billion and more than 90,000 colleagues, Marsh McLennan helps build the confidence to thrive through the power of perspective. For more information, visit marshmclennan.com , or follow on LinkedIn and X.Marsh McLennan is committed to creating a diverse, inclusive and flexible work environment. We aim to attract and retain the best people and embrace diversity of age, background, disability, ethnic origin, family duties, gender orientation or expression, marital status, nationality, parental status, personal or social status, political affiliation, race, religion and beliefs, sex / gender, sexual orientation or expression, skin color, or any other characteristic protected by applicable law.Marsh McLennan is committed to hybrid work, which includes the flexibility of working remotely and the collaboration, connections and professional development benefits of working together in the office. All Marsh McLennan colleagues are expected to be in their local office or working onsite with clients at least three days per week. Office-based teams will identify at least one "anchor day" per week on which their full team will be together in person.