Security Operations Engineer

RSC Holdings Inc.; Charlotte, Northern (NC, KY); Hybrid; USD 120,000 - 190,000; Full time

Benefits offered by this job

Paid Parental Leave

Employee Discount Program

Career Development & Promotional Oppt.

Paid Sick Leave

Early Wage Access through Payactiv

Inclusive culture

Job summary

United Rentals is seeking a Senior Technical Operator for the Security Operations Center. You will lead incident response to Critical-level incidents and perform threat hunting to strengthen detection capabilities.

The role emphasizes hands‑on analysis, cross‑team coordination, and executive communication on complex events. You will maintain and evolve SIEM detections, assist with SOAR automation, and mentor SecOps staff while driving improvements to detection coverage and incident response

Qualifications

• Bachelor’s degree in cybersecurity, information technology, or comparable work experience.
• 3+ years of hands‑on SOC, blue team, or incident response experience.

Responsibilities

• Lead investigation and containment of Critical-level and complex multi‑stage security incidents.
• Perform proactive threat hunting across SIEM, EDR, and network data.
• Engineer enhancements to SIEM detection rules and SOAR playbooks.
• Coordinate containment and recovery actions with cross‑team stakeholders.

Skills

Incident Response

Threat Hunting

SIEM Content

Forensics

Executive Communication

Education

Bachelor's degree in cybersecurity or IT

Tools

Splunk ES/SOAR

Trend Micro

Cisco security platforms

Python

PowerShell

Job description

Great company. Great people. Great opportunities. If you’d like the chance to make your mark with the world’s largest equipment rental provider, come build your future with United Rentals! Serve as a senior technical operator in the Security Operations Center (SOC), responsible for leading response to Critical-level and complex multi-stage incidents, performing proactive threat hunting, and engineering improvements to the organizations detection and response capabilities. Act as the escalation point for SecOps Technicians on high-complexity events and take ownership of incidents that require advanced forensic analysis, cross-team coordination, or executive-level communication. This is a handson defense role focused on reducing attacker dwell time, improving detection fidelity, closing coverage gaps, and ensuring the SOC continuously matures its capabilities.

What you'll do:

Incident Response and Threat Hunting Lead investigation and containment of Critical-level and complex multi-stage security incidents across the full lifecycle, from preparation through lessons learned, ensuring incidents are scoped, contained, eradicated, and recovered with clear handoffs at each phase; Act as the escalation point for SecOps Technicians on incidents that exceed standard runbook procedures, providing guidance on investigation direction and containment strategy; Perform proactive threat hunting using hypothesis-driven searches across SIEM, EDR, and network data, mapping findings to known adversary behaviors and techniques; Conduct deep-dive analysis of advanced threats including targeted attacks, persistent access mechanisms, credential abuse chains, and supply chain compromise indicators; Coordinate containment and recovery actions across teams during Critical incidents, including working with Infrastructure, GRC, and business stakeholders on impact assessment and communication; Produce clear incident narratives for leadership and executive communication, translating technical findings into stage-based summaries suitable for non-technical audiences; Lead tabletop exercises and after-action reviews, identifying detection gaps and driving remediation Detection Engineering and Operations Maintain and optimize SIEM detection rules, correlation logic, notable event configurations, threat intelligence feed integrations, and behavioral analytics content; Engineer enhancements to alert response workflows through SOAR playbooks, scripting, or automation to reduce mean time to respond; Integrate new log sources and data feeds into the SIEM, ensuring proper field parsing, field extraction, and baseline coverage; Tune detection content to improve signal-to-noise ratio, documenting suppression logic and false positive reduction decisions; Evaluate detection coverage against known adversary techniques and prioritise investment recommendations based on the value and persistence of threat indicators; Monitor tool efficacy and performance across the security stack, coordination with vendors on escalations, patches, and feature requests; Train and mentor SecOps Technicians on investigation methodology, incident handling techniques, and tool usage; Create and maintain advanced technical playbooks, forensic procedures, and knowledge base articles; Participate in a rotating on-call schedule for Critical incident response; Maintain current, high-level technical skills in detection, response, and security engineering technologies the organization uses or may adopt;

Requirements:

Bachelor’s degree in cybersecurity, information technology, or comparable work experience 3+ years of hands‑on experience in a SOC, blue team, or incident response role; Strong expertise with at least two of the following: SIEM content development, EDR investigation and response, firewall and IPS policy management, email security operations, log correlation and analysis; Demonstrated ability to investigate and contain complex attacks including targeted intrusions, lateral movement campaigns, and credential abuse chains; Strong understanding of adversary behaviors and techniques, with the ability to map detections and investigations to structured threat models; Ability to write clear incident timelines, investigative findings, and executive‑facing narratives; Experience prioritizing detection investments based on the value and persistence of threat indicators; Advanced organizational skills, ability to successfully manage multiple tasks/incidents simultaneously; CySA+, GCIH, GCIA, GSOM, Cisco Cyber Professional, or equivalent technical certifications; Experience with Splunk (including ES/SOAR), Trend Micro, Cisco security platforms, or similar enterprise tools; Familiarity with scripting (Python, PowerShell) for automation, data enrichment, or log analysis; Experience contributing to maturity assessments or improving programs in a SOC environment; Knowledge of packet capture and network traffic analysis techniques; ITIL Incident Management certification preferred

Why join us?

We don’t just “talk the talk!” We’re an award‑winning company (recently named a Glassdoor Best Place to Work in 2026) that truly cares about our people - That’s why we offer best‑in‑class benefits and perks that will support you and your family. In addition to our health and financial plans, we also offer:

• Paid Parental Leave
• United Compassion Fund
• Employee Discount Program
• Career Development & Promotional Opportunities
• Additional Vacation Buy Up Program (US Only)
• Early Wage Access through Payactiv (US Hourly Only)
• Paid Sick Leave
• An inclusive and welcoming culture
• Explore our comprehensive U.S. benefit offerings For Canadian benefits, click here

United Rentals, Inc. is an Equal Opportunity Employer and makes employment decisions regardless of race, color, religion, sex, national origin, age, genetic information, citizenship status, veteran status, sexual orientation, gender identity, disability, or any other status protected by law.

If you need a reasonable accommodation at any point of the application process, please email [e-mail] for assistance.

At United Rentals, we proudly hire active duty members, veterans, reservists, and their families.

The values that define your service—leadership, discipline, integrity, and teamwork—are the same values that drive our success.

With many veterans already part of our team, we’re ready to help you transition into a rewarding career.

United Rentals consists of a wide variety of roles with different duties and responsibilities. The actual pay rate offered to candidates varies depending upon a wide range of factors including specific position, location, education, training, experience, skills, and ability.

Founded in 1997, United Rentals is the largest equipment rental company in the world, with an integrated network of rental locations in North America, Europe, Australia and New Zealand. In North America, the company operates in 49 states, every Canadian province and Puerto Rico.