Principal Security Analyst

Ready to make a real impactincybersecurity? At Critical Start,we'renot just protecting organizations;we'reredefining howit'sdone.

We'rea team united by an inspiring purpose: to stop breaches, simplify security, and shape the future of cyber defense. Ifyou'repassionate about cutting-edge technology, thrive in a collaborative environment, and want your work to truly matter,you'vefound your home.

We deliver 24x7 AI-accelerated, human-validated detection, investigation, and response across IT and OT. This means we cut through the noise, investigate real threats, and take trusted, SLA-backed action—all powered by the brightest minds and the latest AI. Since 2012,we'vebeen helping organizations outpace evolving attacks with faster response, fewer escalations, and measurable risk reduction.

Innovationisn'tjusta buzzword here;it'sour DNA. We pioneered the first MOBILESOC app for on-the-go detection and response, infused AI into automated alert resolution toeliminatenoise, and slashed investigation time by an astounding 99.3%.We'retransforming how security teams work, and you could be a part of it. From AI-assisted triage to analyst copilots that elevate human expertise, we combine machine intelligence with human judgment to deliveroutcomesourcustomer’strust.

Ifyou're looking for a high-trust, high-impact team where your ideas are amplified by AI and valued by colleagues and customers alike, Critical Start is the place for you. Come build the future of cybersecurity with us!

The ideal candidate for the Principal Security Analyst role possesses at least
12 months of SOC experience, aCySA+ certification or equivalent. They excel in triaging MDR alerts, analyzing events, and recommending or implementing response actions to mitigate threats effectively. As aSubject Matter Expertin our platform and proficient with EDR, SIEM, and security platforms like Microsoft Sentinel, Splunk, and Crowd Strike Falcon,they ensure accurate escalations and orchestration. They also contribute to creating and reviewing playbooks and automations to enhance efficiency and accuracy.

With strong analytical and communication skills, they handle client communications for high-severity incidents and maintain operational integrity through meticulous review and verification processes. This candidate demonstrates technical expertise, attention to detail, and a commitment to ensuring robust cybersecurity measures.

• Initial Triage of MDR Alerts
• Participate in shift-based teams performing 24x7 monitoring of customer networks to detect and stop attacks.
• Analyze Events, Alerts, and Threat Intelligence data used in investigations of potential attacks against customer networks with the assistance of our Critical Start SOC AI.
• Recommend response actions for active attacks
• Implement response actions to stop attackers with approval of Supervisor/Sr. Analysts
• Create playbooks, knowledge objects, and other automations within the MDR SOAR platform
• Review Security Analyst created orchestration for decision accuracy, sound logic, and proper documentation prior to adding it to the Trusted Behavior Registry.
• Written and verbal when required
• Subject Matter Expert (SME) within our platform.
• EDR:
  Microsoft Defender for Endpoint, Crowd Strike Falcon, Palo Alto Cortex XDR
• Other:
  Microsoft Defender Suite (M365D, Outlook, Identity, Cloud)
• Able to verify correct execution of Lead and Principal console protection actions to provide two-person integrity.

• At least 12 months of SOC Tenure or equivalent experience.
• CySA + Certification or Equivalent
• Understanding on how to use AI within the work environment

Imagine a dynamic, enjoyable, and rewarding work environment. We are professionals,…