Network Security Specialist
hace 4 días
**Job Title:** Network Security Specialist
**Job Summary:** We are seeking a highly skilled Network Security Specialist to join our team at Holcim Emea Digital Center. The successful candidate will be responsible for ensuring the security of our network and communication services, with a focus on IT/Cybersecurity and OT Technologies.
Key Responsibilities:
- Assist and deploy policies within the IT/OT framework.
- Actively participate in the delivery activities related to IT/OT convergence projects.
- Isolate cement plants' network from the office network, by implementing bridge firewalls and different network segments as per the IT/OT Holcim Security Standard.
- Keep industrial firewalls hardened and with the right level of automation and configuration; housekeeping the rulesets ensuring maximum efficiency.
- Provide periodic support to cement plant managers or local internal control teams on information sharing to fulfill Minimum Control Standards in the OT environment.
- Create segmentation inside the OT networks, ensuring the availability of the automation network.
- Provide top-notch technical expertise to monitor IT/OT networks for security threats or unauthorized users.
- Be a key stakeholder to the security projects in the scope of the department.
- Provide technical support to operational issues for both network and communication services.
- Automate the environment to proactively improve the delivery of security services.
- Deploy relevant monitoring tools and ensure proactive corrections and fast incident resolution.
- Leverage and maintain appropriate tools to ensure configuration management and capacity planning.
- Ensure efficient collaboration with Delivery, Security, EUS, IO; and the rest of the IT Services teams.
- Ensure consistent and up-to-date technology security skills.
- Work with external suppliers to source hardware and software solutions to network security issues.
- Deploy, test, and maintain security systems such as VPNs, firewalls, and email security.
- Ensure that current network system security is suitable for future requirements of Holcim.
- Identify compromised machines and report on security measures taken to address threats.
- Analyze security risks and develop response procedures.
- Develop and test software deployment tools, firewalls, and intrusion detection/prevention systems.
- Create security documentation for users, assist in disaster recovery, and gather evidence regarding cybercrimes.
- Work proactively on root cause analysis, problem solving, and standard operating procedures creation.
- Conduct regular security audits and prepare security status reports.
- Ensure the Service Level commitments are respected by monitoring the main KPIs.
- Follow and enforce the security, internal control, and standardization principles defined by the Group and regional teams.
- Work on the efficient transfer of delivered services into the run organization (service introduction).
Requirements:
- Level of education/qualifications normally required: Graduate degree in Computer Science, Engineering or related discipline with an IT focus.
- A professional industry certification; experience in networking systems, information technology, or network security is a must.
- Advanced Professional certification in network domain (CCNA, CCNP, CCSP) AWS Certified Advanced Networking is a plus.
- Specific work experience: Broad technical knowledge of IT with at least 6 years experience.
- Experience within IT/OT environments.
- Well versed in multiple security technologies such as SIEM; Intrusion Detection Systems; Next Generation Firewalls; Deep Packet Inspection; Layer 7 filtering; Web Proxy/Content Filtering; PKI, Radius, Log Analysis, vulnerability management, etc.
- Broad knowledge of business-impacting security scenarios and viable methods to detect these scenarios.
- Experience working with 3rd party providers.
- Experience working on projects.
- Work experience in a related industry setting (cement, aggregate, ready-mix, or other manufacturing industries) is a plus.
- Experience working with international teams is a plus.
- Experience with DevOps tools (Ansible, Terraform) is a plus.
- Technical/functional skills: Deep understanding of running IT services in regards to technology and processes.
- Knowledge of existing and emerging hardware and software technologies and IT architectures.
- Strong competency in developing efficient and effective solutions to diverse and complex business problems.
- Ability to implement IT security policies and governance.
- Deep knowledge of Cisco firewall technologies (ASA, Firepower).
- Deep knowledge of Network infrastructure (WAN/Internet, LAN/Wireless LAN, Perimeter Security, VPN) and related products, manufacturers, and APIs Cisco Meraki AWS Solarwinds.
- Deep knowledge of proxy and web filtering solutions (Forcepoint specifically, Zscaler, Umbrella...).
- Knowledge of DNS protocols and manufacturers (Infoblox, Route53, etc.).
- Good understanding of incident, problem, and change management processes and procedures as well as ticketing platforms.
- Proven analytical and troubleshooting abilities.
- Behavioral/managerial competencies: Ability to communicate openly and effectively with IT management, Business Units management, with other IT managers, with staff, and with many diverse constituencies.
- Ability to work decisively under heavy workload considering the criticality, urgency, and extended work hours required to ensure the availability of the service in accordance to service level commitments.
- High willingness to drive transformation and service improvement.
- Strong customer/end-user/client service orientation.
- Highly self-motivated and directed.
- Keen attention to detail.
- Capability for problem solving, decision making, sound judgment, and assertiveness.
- Language Skills: Excellent English (written spoken).
- Other languages (Arabic, French etc.) in the EMEA region are a plus.
- Mobility requirements (time spent traveling internationally, nationally, etc.): 10%
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