Senior Security Platform Engineer

Company: NTT Ltd.
Apply for the Senior Security Platform Engineer
Location: Hemel Hempstead
Job Description:

Job Overview

We serve as a senior member of a 24/7 global cybersecurity team, providing leadership in IT/OT environments with expertise in ICS and SCADA systems. This role sits within our global data center cybersecurity organization and offers the opportunity to work on critical IT/OT security challenges in a highly collaborative, international environment.

Responsibilities

  • Lead the administration and optimization of enterprise security platforms, including break‑fix, patching, version upgrades, and integration with broader security ecosystems.
  • Direct complex security incident response efforts across endpoint protection, EDR, malware analysis, network forensics, and computer forensics to ensure rapid containment and root cause analysis.
  • Design and execute advanced vulnerability assessments using automated and manual techniques, prioritizing remediation based on business risk and threat intelligence.
  • Continuously monitor threat intelligence feeds and security alerts to identify emerging risks and recommend countermeasures.
  • Interpret and synthesize threat reports to guide architectural improvements and validate the effectiveness of security controls.
  • Partner with cross‑functional teams to develop and implement mitigation strategies, configuration baselines, and patch management frameworks.
  • Champion automation initiatives to streamline incident response, threat detection, and reporting workflows using security platforms and scripting.
  • Maintain and evolve a knowledge base by authoring and reviewing technical articles, playbooks, and SOPs.
  • Lead post‑incident reviews, driving service recovery, documentation, and preventive measures across teams and vendors.
  • Provide expert guidance on specialized security domains and technologies to ensure effective resolution of escalated incidents.
  • Ensure meticulous incident logging and collaborate across internal teams, client IT environments, vendors, and carriers to expedite resolution.
  • Conduct advanced data correlation and threat hunting across network traffic, email logs, malware samples, web server logs, and DNS records to uncover stealthy threats.
  • Lead strategic security projects, mentor junior engineers, and contribute to the evolution of our security posture through innovation and thought leadership.

Technologies

  • AI
  • Firewall
  • IAM
  • Network Security
  • Web

Mandatory Qualifications

  • Multiple years of experience working in IT and/or Security Operations Centers.
  • Advanced expertise in architecting, implementing, and optimizing SIEM and security platforms across hybrid environments.
  • Demonstrated leadership in ICs and SCADA security integration and monitoring within critical infrastructure.
  • Deep knowledge of security architecture with hands‑on experience designing and integrating multi‑layered security solutions across diverse technology stacks.
  • Strong problem‑solving skills with a track record of resolving complex security challenges independently and leading cross‑functional teams through ambiguity.
  • Exceptional attention to detail in high‑stakes environments, especially in threat detection, incident response, and documentation.
  • Advanced analytical skills with the ability to synthesize threat intelligence, correlate multi‑source data, and produce actionable risk insights.
  • Polished spoken and written communication skills in English.
  • Advanced experience with security technologies such as SIEM, PAM, IAM, PenTest, Threat Hunting, Firewall, and Proxy.
  • Bachelor’s degree or equivalent in Information Technology or a related field.

Preferred Qualifications

  • Experience in a data center environment.
  • Proactive customer engagement mindset with a strategic approach to anticipating security needs and influencing stakeholders.
  • Proven leadership in global security teams, including collaboration, mentoring, and alignment between security operations and business objectives.
  • Relevant security certifications such as CySA, PenTest, CCSP, GCIH, OSCP, CISM, or CISSP.
  • Relevant IT certifications such as CCNA, CCNP, RHCSA, GRID, GICSP, AZ‑500, or SC‑200 are an advantage.

Education

Bachelor’s degree or equivalent in Information Technology or a related field.

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Posted: July 9th, 2026