Sr. 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'tjust a 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 Senior Security Analyst role possesses at least6 months of SOC experience, and aSecurity+ certification. 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.
  • Recommend response actions for active attacks
  • Implement response actions to stop attackers with approval of Supervisor/Sr. Analysts
• Approval of Security Analyst Escalations
  • Senior Security Analysts review post investigation Analyst escalations for response accuracy, protection actions, recommendations, and grammar before sending them to the customer.
• Orchestration creation & approval for MDR alerts
  • 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.
• Client communications related to High & Critical investigations
  • Written and verbal when required
• Subject Matter Expert (SME) within our platform
  • Able to clearly navigate and articulate all aspects of the ZTAP console to both Security Analysts and customers
• Mid-level competence within MDR tool suite (13 total vendors)
  • EDR:
    Microsoft Defender for Endpoint, Crowd Strike Falcon, Palo Alto Cortex XDR, VMWare…