Senior Cyber Security Analyst

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About The Company
MANTECH supports customers working on important national security and technology missions. The company is seeking a motivated, mission-driven Senior Cyber Security Analyst to contribute to defensive cyber operations in Springfield, Virginia. In this role, you will help protect national security networks by identifying emerging threats, investigating suspicious activity, and coordinating effective incident responses. You will work with technical teams and stakeholders to turn security data into clear findings and practical actions that strengthen the protection of critical systems and information.
About The Role
As a Senior Cyber Security Analyst, you will monitor and assess security events across enterprise environments, identify potential attacks and misuse, and support incidents from initial detection through resolution. You will combine information from security tools, network traffic, system logs, and other telemetry to determine what is happening, assess potential exposure, and recommend timely remediation. Your analysis will help stakeholders understand incident scope, urgency, and impact, while your documentation and reporting will support coordinated response and ongoing defensive improvements. This position operates on a 24x7 shift-work basis, following a 4/10 schedule, with hours dependent on location.
Qualifications
Bachelor’s degree, or four or more additional years of IT experience in lieu of a degree.
At least five years of cybersecurity experience.
An IAT Level II certification, such as GSEC, Security+, SSCP, or CCNA-Security.
Knowledge of common cybersecurity threats, attack techniques, vulnerabilities, and indicators of compromise.
Experience using security information and event management (SIEM) tools.
Experience monitoring and analyzing security events, network traffic, system logs, and other security telemetry to identify suspicious or anomalous activity.
Ability to analyze security data and communicate findings clearly in written and verbal reports.
Active TS/SCI clearance with Polygraph.
Preferred qualifications include a CSSP-IR certification, such as CEH or CySA+, and experience reviewing packet captures, firewall and proxy logs, DNS traffic, authentication logs, endpoint telemetry, and system events. Familiarity with the MITRE ATT&CK framework and mapping observed activity to adversary tactics, techniques, and procedures is also preferred. Strong interpersonal skills, including the ability to engage with senior management, and the ability to manage competing tasks in a fast-paced environment are valued.
Responsibilities
Detect, identify, and report possible cyberattacks, intrusions, anomalous activity, and misuse.
Characterize network traffic and system data to identify potential threats to enterprise resources.
Correlate security events and incidents using information from multiple sources across the enterprise.
Triage cyber incidents, determine scope and urgency, assess potential impact, identify vulnerabilities, and recommend prompt remediation.
Track and document incidents from initial detection through final resolution.
Analyze potential damage to data and infrastructure resulting from cyber incidents.
Conduct incident trend analysis and prepare clear, actionable reporting for relevant stakeholders.
Benefits
This role offers the opportunity to contribute directly to defensive cyber operations and support a mission-focused environment. You will apply and develop your analytical skills while collaborating with colleagues and stakeholders on complex security challenges. MANTECH provides employees with benefits and programs in accordance with applicable company policies and eligibility requirements. Details about available compensation, benefits, and work arrangements can be discussed during the hiring process.
Equal Opportunity
MANTECH is committed to providing equal employment opportunities. Employment decisions are made without regard to characteristics protected by applicable law. Applicants who need a reasonable accommodation during the application or hiring process may request assistance through the appropriate company contact.

Work arrangement
Yes