Cybersecurity Specialist III
Westborough, MA, 01581 On-site
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About the role
The Cybersecurity Specialist III is a senior individual contributor on the enterprise cybersecurity team at LG Energy Solution Vertech (LGESVT), reporting to the Lead Cybersecurity Engineer. The role carries day-to-day responsibility for security operations across LGESVT’s enterprise estate — incident triage and response, SIEM query development and tuning, vulnerability remediation, endpoint detection, cloud security in AWS, and identity and access management. The role spans the full breadth of enterprise security operations rather than a single specialized area, and carries meaningful autonomy within each domain. The Specialist III operates independently on day-to-day security operations and works closely with the Lead Cybersecurity Engineer on complex engineering and incident response work. This role is open to any qualified applicant within the United States.
What you'll bring
- Bachelor’s degree in Cybersecurity, Computer Science, Information Technology, or a related field.
- Equivalent practical experience will be considered.
- Specialty, AWS Certified Solutions Architect &ndash
- Associate, GIAC (GSEC, GCIH, or GCIA), CompTIA CySA+ or Security+, or Microsoft SC-200.
- Candidates actively working toward an advanced certification are encouraged to apply
- certification support is available.
- Minimum 4 years of hands-on experience in a security operations, security analyst, or cybersecurity specialist role.
- Demonstrated experience performing incident response, including alert triage, investigation to root cause, and written documentation of findings.
- Hands-on SIEM experience, including writing and tuning queries and working directly with log data (Microsoft Sentinel, Splunk, Elastic, or equivalent).
- Practical vulnerability management experience, including risk-based prioritization and coordinating remediation with system owners.
- Working experience with EDR platforms, including custom rule creation and analysis of endpoint telemetry.
- Strong working knowledge of AWS services and core cloud security practices, including IAM, logging, monitoring, and posture management.