Senior Security Investigator - CTJ - Poly

• Skilled working with extremely large data sets to answer complex and ambiguous questions, using tools and languages like: SQL, KQL, Jupyter Notebook, Spark, Azure Synapse, R, U-SQL, Python, Splunk, and Power BI
• Perform investigation on suspected vulnerable or compromised assets and services, and analyze log data and other artifacts to determine what occurred
• Identify potential issues with detection (e.g., false positives, noise). Analyze potential or actual intrusions identified as a result of monitoring activities. Create detections based on available data (e.g., Indicators of Compromise [IOC] and Tools Tactics Procedures [TTP]). Continue to drive automation of detection and response
• Plan and execute proactive adversary hunt for malicious activity using myriad log sources, network- and host-based tools, and threat intelligence to identify the threat actors and their tools and techniques
• Analyze key metrics and key performance indicators (KPIs) and other data sources (e.g., bugs, unhealthy data pipeline) and identifies trends in security issues and escalates appropriately. Recommend improvements and/or metrics to address gaps in measurement
• Proactively identify and investigate potential issues in controls (e.g., network, identity, etc.). Leverage expertise and team members to address and drive down issues accordingly. Identify and/or recognize patterns and recommend potential mitigation strategies
• Identify and raise opportunities for automation to improve efficiency and effectiveness. Create automation as appropriate to drive greater efficiency with high value

• Doctorate in Statistics, Mathematics, Computer Science, Cyber Security, or related field OR Master's Degree in Statistics, Mathematics, Computer Science, Cyber Security, or related field AND 3+ years experience in software development lifecycle, large-scale computing, threat modeling, cyber security, anomaly detection, Security Operations Center (SOC) detection, threat analytics, security incident and event management (SIEM), information technology (IT), or operations incident response OR Bachelor's Degree in Statistics, Mathematics, Computer Science, Cyber Security, or related field AND 4+ years experience in software development lifecycle, large-scale computing, threat modeling, cyber security, anomaly detection, Security Operations Center (SOC) detection, threat analytics, security incident and event management (SIEM), information technology (IT), or operations incident response OR equivalent experience
• Candidates must be able to meet Microsoft, customer and/or government security screening requirements
• The successful candidate must have an active U.S. Government Top Secret Clearance with access to Sensitive Compartmented Information (SCI) based on a Single Scope Background Investigation (SSBI) with Polygraph
• This position requires verification of U.S. citizenship due to citizenship-based legal restrictions

• Prior experience working with the US Government or US Department of Defense
• Bachelor's degree in related discipline such as computer security, computer science, computer engineering or information technology
• Good working knowledge of common security, encryption, and protocols such as encryption, PKI, modern authentication and cloud app authorization architectures and protocols such as SAML (Security Assertion Markup Language) or OAUTH
• Past experience working in large scale enterprise products: M365 products such as Exchange, SharePoint, Skype, Teams
• Deep and practical OS security/internals knowledge for Linux and Windows
• Exposure to security related subjects and trends such as digital forensics, reverse engineering, penetration testing, and malware analysis
• Experience with the Microsoft cloud and/or stack including O365, Azure, Windows or other Microsoft software/services
• Working knowledge of Azure AI Foundry
• Ability to work effectively in ambiguous situations and respond favorably to change
• Comfortable working in a startup mode on a new team where there is lots of opportunity
• Certifications like GCIA, GSLC, GCIH, CISM, CISSP, CEH, Etc. are plus
• 4+ years working in cyber security (Information Security, InfoSec, SecOps, Security Operations, SOC, CSOC, analyst, researcher, etc.)

Certain roles may be eligible for benefits and other compensation