Senior Corporate Security Specialist

ActBlue is a nonprofit organization dedicated to creating technology that supports Democratic victories and progressive causes. The Senior Corporate Security Specialist II builds and tunes security detections, leads complex employee investigations and sensitive matter reviews, conducts forensic analysis, and supports security operations, evidence handling, and incident response.

Responsibilities:

• Author, tune, and maintain detections as code in our SIEM/SOAR pipeline — version-controlled, peer-reviewed, tested, and deployed through the detection pipeline
• Identify detection and tooling gaps and propose architecture improvements
• Serve on the on-call rotation and coordinate day-to-day escalations with our third-party managed SOC, maintaining the detection feedback loop
• Operate email security, endpoint security, and DLP controls; investigate and resolve high-sensitivity signals and tune controls based on what investigations surface
• Run tabletop exercises, deliver workforce security training, and produce threat intelligence that shapes team priorities
• Restrict, suspend, or revoke an employee's system access when a review identifies active risk, pending completion of that review
• Define security requirements and detection coverage for identity and audit collection across corporate systems
• Conduct investigations and sensitive matter reviews with forensically sound evidence handling, chain-of-custody discipline, and confidentiality by default
• Lead complex reviews independently — employee conduct, insider risk, access misuse, data exfiltration — co-leading or escalating the most sensitive matters
• Conduct forensic analysis across endpoint, identity, email, cloud, and SaaS sources
• Produce findings, evidence summaries, technical analyses, and timelines for key stakeholders
• Preserve evidence for legal holds and formal proceedings
• Interpret findings in context and recommend resolutions, rather than providing raw technical output alone
• Apply and improve Corporate Security methodology, evidence standards, and reporting standards
• Manage the SOC relationship and coordinate forensic vendors and external specialists, treating both as extensions of the team's capacity
• Exercise independent judgment over review methodology and evidence handling within established standards
• Maintain the chain-of-custody, evidence-handling, and confidentiality controls used by Corporate Security

Requirements:

• 5 to 7 years of security experience, including hands-on experience leading complex corporate-security and workplace investigations
• Hands-on experience conducting forensic investigations across endpoint, identity, email, cloud, and SaaS data sources
• Practical fluency with detection engineering as code, including authoring, testing, and tuning detections in a version-controlled pipeline
• Working experience with forensically sound evidence collection and preservation — including chain-of-custody discipline, hashing, custodian-based collection, and eDiscovery / legal-hold workflows
• Sound judgment about what evidence to collect, how to preserve it, and what to share with whom
• A track record of producing review findings and recommendations that have held up to scrutiny
• Comfort working with internal or external counsel, and directing forensic vendors on assigned engagements
• Understanding of the legal context in which corporate-security matters arise, including the limits and obligations that apply to management-side reviews
• Strong written and verbal communication, including the ability to explain technical findings to non-technical audiences
• Experience working alongside a managed SOC or MSSP, including escalation management
• Experience with infrastructure-as-code workflows in Terraform and Python for logging, alerting, and security automation
• Experience securing Google Workspace, Okta, GitHub, and Atlassian environments
• Experience supporting PCI evidence collection and response