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CenturyLink

Global telecommunications and IT services provider

SR Cyber Threat Security Analyst

Security Operations & Incident ResponseUpdated on Nov 14
Full-timeMelbourne VIC, AustraliaNo salary listedIn-person

About the Job

Requirements

  • A bachelor's degree in Computer Science, Cybersecurity, or a related field is required.
  • At least 3 years of experience in cybersecurity, including a minimum of 1–2 years focused on threat hunting.
  • Strong understanding of Windows, Linux, and macOS operating systems.
  • Experience with security tools and technologies, including SIEM, EDR, and network monitoring tools.
  • Proficiency in Python and PowerShell scripting.
  • Strong analytical and problem-solving skills.
  • Excellent communication and presentation skills to translate technical findings into business impact.

Responsibilities

  • Conduct proactive threat hunting across endpoint, network, and cloud environments.
  • Develop and maintain threat hunting hypotheses based on current threat intelligence and organizational risk assessments.
  • Apply structured threat hunting methodologies and frameworks, including MITRE ATT&CK, PEAK, TAHITI, THMM, and the Diamond Model, to guide hypothesis creation, evidence collection, and iterative improvements.
  • Use knowledge of adversary tactics, malware analysis, intrusion detection, and cloud security.
  • Use EDR/XDR solutions, SIEM platforms, data pipelines, and threat hunting tools to detect and disrupt adversary tactics.
  • Develop custom scripts and tools to automate threat hunting processes and improve efficiency.
  • Apply threat hunting techniques including YARA rules, indicator-of-compromise analysis, and behavioral analysis.
  • Analyze security logs, network traffic, and endpoint data to identify malicious activity and potential threats.
  • Investigate security incidents and provide detailed reports on findings, including root cause analysis and remediation recommendations.
  • Collaborate with incident response, vulnerability management, and other security teams to share threat intelligence and coordinate security efforts.
  • Develop and manage cyber threat intelligence while staying current on the threat landscape, attack techniques, and emerging technologies.
  • Map adversary behaviors to ATT&CK techniques and translate findings into actionable intelligence.
  • Share actionable intelligence with internal teams and external stakeholders.
  • Present findings and recommendations to technical and executive audiences.
  • Contribute to the development and improvement of threat hunting strategies, processes, and playbooks aligned with PEAK and TAHITI cycles.
  • Develop and maintain a strong understanding of the organization's infrastructure and applications to strengthen awareness of evolving threats and adversary behavior.
  • Drive the maturation of the overall security operations service.
  • Potentially work overtime when responding to security incidents to support a global 24x7x365 Managed Threat Security Services program.

Desired Qualifications

  • Experience with threat intelligence platforms, feeds, and cyber threat intelligence frameworks.
  • Relevant security certifications, such as SANS GIAC, GNFA, GCFA, or Offensive Security certifications.
  • Experience with cloud platforms such as AWS, Azure, or GCP, and container security.

About the Company

CenturyLink

Global telecommunications and IT services provider

CenturyLink, now Lumen Technologies, provides telecommunications and IT services for businesses and government, including voice, network, cloud, and managed services. Its offerings cover VoIP, SIP Trunking, hosted VoIP, SD-WAN, MPLS, IPVPN, plus Big Data as a Service, IoT, and cloud management across hybrid, private, and public clouds—backed by data centers. Compared with competitors, it combines traditional communications with modern network and cloud services at scale, serving a wide range of industries globally. Its goal is to help customers communicate, connect, and digitally transform with secure, reliable, and scalable network and cloud solutions.

Company size
10,001+
Company stage
IPO
Headquarters
Monroe, LA
Founded
1930

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