ManTech seeks a motivated, career and customer-oriented Linux System Administrator to join our team in Laurel, Maryland. Responsibilities include but are not limited to:Analyze and resolve complex problems associated with server hardware, applications, and software integration.Configure and manage LINUX and Solaris operating systems.Installs/loads operating systems software.Troubleshoot, maintain integrity of and configure network components.Implement operating systems enhancements to improve reliability and performance.Minimum Qualifications: Twenty (20) years’ experience as a as a Systems Engineer in programs and contracts of similar scope, type and complexity is required.Bachelor’s degree from an accredited college or university in technical discipline is required. Additional five (5) years’ experience may be substituted for degree.Demonstrated experience in planning and leading Systems Engineering efforts is required.Preferred Qualifications: VMware experienceExperience in implementing solutions with PKI-controlled access is desired.Understanding networking components is desired.Clearance Requirements: Active/current TS/SCI with polygraphPhysical Requirements: The person in this position must be able to remain in a stationary position 50% of the time.Occasionally move about inside the office to collaborate with other leaders/teams, use standard office automation equipment, and virtual communication.6.26.BP.SH.AB.AL.23

ManTech seeks a motivated, career and customer-oriented Cyber Engineer to join our team in Herndon, Virginia. As a Cyber Engineer on our team, your role is critical in enhancing our cyber defense capabilities through innovative solutions and automation for our Intelligence Community customer’s Cyber Security Operations Center (CSOC). Help protect the most coveted target in the world.Responsibilities include, but are not limited to:Develop and maintain scripts and automation tools using Python or similar programming languages. Create and optimize Jupyter Notebooks for data analysis and reporting.Design, build, and maintain data pipelines and ETL processes using tools such as Apache NiFi and Diode. Integrate data from various sources to support security operations and analytics.Implement and manage automation workflows using SOAR platforms. Develop automated incident response playbooks to streamline CSOC processes.Deploy, configure, and manage EDR solutions to detect and respond to security threats. Conduct thorough investigations and analysis of EDR alerts.Perform digital forensic investigations to identify and analyze security incidents. Collect, preserve, and analyze digital evidence in accordance with legal and organizational requirements.Configure and maintain SIEM tools like Splunk or Elk for real-time monitoring and threat detection. Develop and refine correlation rules, dashboards, and reports to enhance threat visibility.Minimum Qualifications:Bachelor’s degree and 7+ years’ experience in cyber security or High School Diploma and 11+ years’ experienceExperience in cyber development, scripting, and automationExperience with data engineering tools and techniques, including ETL processes and Apache NiFi or similarExperience with automation and SOAR platformsExperience using EDR solutions or digital forensics methodologiesExperience using SIEM tools like Splunk, Elk or similarPreferred Qualifications:Relevant certifications (e.g., CISSP, GIAC, CEH)Clearance Requirements:Must have a current/active TS/SCI w/ polygraphPhysical Requirements:The person in this position must be able to remain in a stationary position 50% of the timeSKN.7.23

ManTechseeks a motivated, career and customer-orientedEnterprise IT Support Officer (EITSO) – Equipment and Telephony Installer to join our team inHerndon, VA. In this role, you support a Dedicated Support Team supporting the Voice Program Recap Office (VPRO) installing network equipment, telephones (VoIP, analog, ISDN), voice media gateways and associated service modules.Responsibilities include, but are not limited to:Performing high quality installations and troubleshooting a variety of telephones, running and terminating cables to voice switch equipment.Dressing cabling appropriately according to industry and Sponsor standards.Mounting voice and network equipment in racks, running and connecting both power and service cabling as appropriate.Performing surveys as necessary to collect or validate information for the engineering or VSIT personnel.Local travel will be required between customer buildings.Minimum Qualifications:BA/BS and 7+ years of experiences, or a combination of education and work experience equivalent to 11+ years.Minimum 10 years of experience with implementation of the following infrastructure networks:Sponsor's classified LAN infrastructure (including scripting, configuration, cutover and troubleshooting)Sponsor's unclassified LAN infrastructure (including scripting, configuration, cutover and troubleshooting).Minimum 10 years of experience installing and troubleshooting telephone instruments and media gateways on the Sponsors classified and unclassified networks.Experience in a variety of cabling areas including 110 type cross connections, RJ45 patch panels, wire wrap terminals, copper cable terminations, DSX Panel T-1 cabling, fiber terminations.Excellent knowledge of various cabling methodologies, industry standards, troubleshooting techniques, and reading/understanding cable run lists.Preferred Qualifications:Experience with implementation on the Sponsor's new unclassified network LAN infrastructure.Special non-commercial systems administrator experience (access management/file transfer)VoIP Telephone Installation experience.Related work experience in IT hardware and cabling installation.Clearance Requirements:Must have a current/active TS/SCI with PolygraphPhysical Requirements:Must be able to remain in a stationary position at least 50% of the time. Constantly operate a computer, phone, and other office equipment for extended periods of time.Must be able to move/traverse within and between buildings and offices, position self to maintain equipment and cabling, including under the desks, while moving floor tiles, and in server closets, some of which may be confined spaces.Must be able to move Audio/Visual or Computer equipment weighing 50 pounds or more, some equipment may require team-lift or the use of carts. Ascends/descends a ladder, 10+ feet high while pulling cables and adjusting equipment.

ManTech seeks a motivated, career and customer-oriented Software Engineer to join our team in Herndon, VA The Software Engineer will be part of a program that will deliver engineering services for network infrastructure as well as sophisticated enterprise computing infrastructure including end-point devices, data center hosted servers, multi-Cloud services as well as virtualized applications, and storage systems. Enterprise Computing Engineering services include modern application technology including containerized solutions with orchestrated workflow that function both on customer premise, and via remote Cloud services.Responsibilities include but are not limited to:Utilize modern application technology including containerized solutions with orchestrated workflow that function both on customer premise, and via remote Cloud services.Be part of a team that will deliver engineering services for network infrastructure as well as sophisticated enterprise computing infrastructure including end-point devices, data center hosted servers, multi-Cloud services as well as virtualized applications, and storage systems.Minimum Qualifications:Bachelor’s degree in computer science or related field with 3+ years of experience in the software engineering/programmingFamiliarity with Eclipse developmental duties in Git Hub, Dev Ops, Java and Python.Experience in security review of applications and infrastructure.2+ years of experience participating in agile activities.3+ years of recent Java or Python experienceExperience researching new technologies in object-oriented programming.Experience in Cloud based services.Preferred Qualifications:Experience with infrastructure automation technologies like Docker, Vagrant, etc.Experience with build automation technologies like Maven, Jenkins, etc.Experience with building APIs and services using REST, SOAP, etcExperience with scripting languages like Perl, Shell, etc.Works well in an engineering team environment with other teammates who varied skills levels.Ability to mentor othersClearance Requirements:An active TS/SCI with PolygraphPhysical Requirements:Must be able to remain in a stationary position 50%Use hands to operate a computer and other office productivity machinery, such as a calculator, copy machine, and computer printer.Occasionally move about inside the office to access file cabinets, office machinery, etc.

ManTech seeks a motivated, career and customer-oriented Windows Cloud Systems Engineer to join our team in Herndon, VA The Windows Cloud Systems Engineer will be responsible for engineering, supporting, and troubleshooting various Windows and Microsoft technologies, as well as automating processes and managing Azure environments.Responsibilities include but are not limited to:Engineer, support, and troubleshoot Microsoft Azure Active Directory and Group Policy, Microsoft Defender, including reporting and patching, and Windows 10 (and higher) desktop operating systems, including developing new build and deployment methods for Windows workstations.Support and troubleshoot Windows Server 2019 technologies.Conduct and review Rapid 7 scans.Automate tasks and configuration items using PowerShell.Support and troubleshoot desktop applications, including Microsoft 365 products and classification management tools.Document all new system changes and ensure existing documentation is current, as well as monitor and administer the Azure Virtual Desktop environment.Provide support to Tier 1 and Tier 2 personnel on user issues, including application assistance, network troubleshooting, and other user-related tasks.Minimum Qualifications:Bachelor’s degree in computer science or related field with 6+ years of experience in the Information Technology fieldExperience with core Microsoft Windows platforms, services, and tools, including:Windows 10 (and up) Desktop Operating SystemsWindows 2019 (and up) Server Operating SystemsActive DirectoryGroup PolicyDNS, DHCPMicrosoft PowerShell scriptingStrong verbal communication and documentation skills.Excellent troubleshooting skills.Preferred Qualifications:Experience with Agile Methodology.Familiarity with Terraform.Experience with Visual Studio Code and Git.Knowledge of KQL/SQL Queries.Experience with DevOps practices.Certifications: Microsoft AZ-900 and MS-900.Clearance Requirements:An active TS/SCI with PolygraphPhysical Requirements:Use hands to operate a computer and other office productivity machinery, such as a calculator, copy machine, and computer printer.The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.Constantly positions self to maintain computers in the lab, including under desks and in server closets.

ManTech seeks a motivated, career and customer-oriented Senior Software Developer - Cloud to join our team in Chantilly, VA. Responsibilities include but are not limited to:Designing and implementing large-scale ingest systems in a Big Data environmentOptimizing all stages of the data lifecycle, from initial planning, to ingest, through final display and beyondDesigning and implementing data extraction, cleansing, transformation, loading, and replication/distributionDeveloping custom solutions/code to ingest and exploit new and existing data sourcesWorking with Sponsor development teams to improve application performanceOrganizing and maintaining documentation so others are able to understand and use itCollaborating with teammates, other service providers, vendors, and users to develop new and more efficient methodsMinimum Qualifications:High School Diploma/GED with 15+ years of experience in the Information Technology fieldStrong software development experience, to include significant Java development, data analysis/parsing, and SQL/database experienceStrong experience with the full data lifecycle, from ingest through display, in a Big Data environmentStrong experience with Java-related technologies, such as JDK, J2EE, EJB, JDBC, and/or Spring, and experience with RESTful APIsExperience developing and performing ETL tasks in a Linux environmentPreferred Qualifications:Experience with Hadoop, Hbase, MapReduceExperience with ElasticsearchExperience with NiFi, Kafka, and ZookeeperClearance Requirements:An active TS/SCI with PolygraphPhysical Requirements:Use hands to operate a computer and other office productivity machinery, such as a calculator, copy machine and computer printer.The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.Must be able to remain in a stationary position 50% of the timeThe person in this position frequently communicates with co-workers, management and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations

ManTech seeks a motivated, career and customer-oriented Application Developer to join our team in Chantilly, VA The Application Developer will be dedicated full-time to development and enhancement support for existing applications as well as new development.Responsibilities include but are not limited to:Designing, programming/developing, and modifying software systems, applications, and tools, both existing and potentially new in the futureAnalyzing user needs and software requirements to determine feasibility of design within time and cost constraintsCollaborating with teammates, other service providers, vendors, and users to develop new program featuresDeveloping unit and integration tests, in addition to participating in functional and regression tests to ensure programs will produce the desired results and that instructions are correctCorrecting errors by making the appropriate changes and then re-checking the program to ensure the desired result was produced. As well as, reviewing help desk messages periodically and working with other teams to troubleshoot and resolve production issuesParticipating in code reviews by reviewing and incorporating feedback from teammates as well as providing feedback to others based on existing standards and recommended programming practices.Deploying code to development, test, and production environments using existing DevOps infrastructure/toolsMinimum Qualifications:High School Diploma/GED with 7+ years of experience in the Information Technology fieldStrong Java programming/development skills, with hands-on experienceExperience with HTML, CSS, JavaScript, and at least one modern front-end framework, preferably AngularExperience with, or knowledge of, the Spring Framework and RESTful services and SQL, ORM libraries such as Hibernate/JPAExperience with Git branching and merging within a team to manage source codePreferred Qualifications:Strong ability to manage competing priorities and communication to multiple stakeholdersExperience with, or knowledge of, ElasticsearchExperience with, or knowledge of, best practices for developing secure web applicationsClearance Requirements:An active TS/SCI with PolygraphPhysical Requirements:Use hands to operate a computer and other office productivity machinery, such as a calculator, copy machine and computer printer.The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.Must be able to remain in a stationary position 50% of the time

ManTech seeks a motivated, career and customer-oriented Cyber Incident Response Analyst to join our team in McLean, Virginia. Our team provides 24x7x365 support to our customer.The Cyber Incident Response Analyst will work a 4-day work week; 10 hours per shift. Staff will be assigned to either Sun-Wed or Wed-Sat. The schedule is fixed and does not rotate. We have openings on 1st, 2nd and 3rd shifts. Shift differential applies to 2nd and 3rd shifts. Candidate must be able to train on day shift for 6 months.Responsibilities include but are not limited to:Incident Detection and MonitoringIncident Analysis and InvestigationIncident Response and MitigationThreat Intelligence and Vulnerability ManagementReporting and DocumentationMinimum Qualifications:Bachelor’s Degree or High School diploma and 1+ years of experience ina cyber security related role.1+ years' experience in incident response or security operations center.Knowledge of cybersecurity principles, incident detection, analysis, and response methodologies.Knowledge of operating systems, network protocols, and security technologies.Knowledge of threat intelligence, vulnerability management, and security incident response best practices.Ability to obtain a DoD 8570 IAT-II certification within 6 months of hirePreferred Qualifications:Relevant certifications including GIAC Certified Incident Handler (GCIH), Certified Incident Response Handler (GCFA) or similarExperience with using SIEM systems, network security tools, and log analysis toolsExperience with cyber incident responseExperience with Mitre ATT&CK frameworkExperience with threat intelligence, vulnerability management, and security incident responseClearance Requirements:Must have a current/active TS/SCI w/PolygraphPhysical Requirements:The person in this position must be able to remain in a stationary position 50% of the timeSKN.7.23

ManTech seeks a motivated, career and customer-oriented Enterprise Architect to join our team in McLean, VA.Responsibilities include but are not limited to:Oversee and manage the customer’s business, Information Technology (IT), application, and data architecturePlan, develop, and execute the customer’s Enterprise Architecture (EA) solution strategy, consistent with security guidelines and EA industry standardsProvide technical analysis and advice on application and operational environments, functional systems analysis, design, integration, documentation, and implementationFacilitate and participate in business and IT alignment through stakeholder collaboration, driving digital business strategiesAnalyze business and operating models, market trends and the technology industry to determine their potential impact on the customer’s enterprises business strategy, direction, and architectureValidate IT infrastructure and other reference architectures for adherence to security guidelines and procedures and recommend changes to enhance security and reduce risksBasic Qualifications:Bachelor’s Degree in a technical field (Science, Technology, Engineering, and Mathematics (STEM))7+ years serving as an Architect Lead or similar work leading platform-based technology strategy or solution deliveryExperience with delivery frameworks, such as Agile, DevSecOps, and integrated Human-Centered DesignExperience in end-to-end solution development lifecycle and agile methodologiesExpertise in cloud services supporting identity management, microservice and event-driven architectures and modern data architecturesPreferred Qualifications:Advanced degrees and certifications are desired (e.g., TOGAF, Open CA, Zachman Certified Architecture)Understanding of the Government program management and acquisition framework and System Engineering Life Cycle (SELC) highly preferred.Delivery experience in enterprise-scale software and data platforms for Government agenciesClearance Requirements:TS/SCI with polygraphPhysical Requirements:The person in this position must be able to remain in a stationary position 50% of the time. Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.

ManTech seeks a motivated, career and customer-oriented Information Systems Security Manager (ISSM) to join our team in McLean, Virginia. As an ISSM on our team, you will support our Cyber Security Operations Center (CSOC) by identifying, coordinating, and mitigating risks that could impact our ability to execute our detection and response mission. This role requires a proactive approach to risk assessment, policy alignment, incident readiness, and strategic planning to enhance the security posture and resilience of our operations.Responsibilities include, but are not limited to:Risk Identification & AssessmentRisk Mitigation & CoordinationIncident Readiness & Business ContinuityGovernance & Compliance AlignmentCommunication & Stakeholder EngagementCollaborate with security teams, leadership, and external stakeholders to ensure continuous risk visibility and mitigation strategies are in placeRequired Qualifications:Bachelor’s degree and 6+ years’ experience in cyber risk management, cybersecurity operations, security governance, or relevant field or High School Diploma and 10+ years’ experience in cyber risk management, cybersecurity operations, security governance, or relevant fieldExperience with cyber threats, vulnerabilities, security frameworks, and risk management methodologiesExperience in security operations, threat analysis, or cyber resilience planningUnderstanding of Security Operations Center (SOC) environments, threat intelligence, and incident response processesPreferred Qualifications:Certifications such as CISSP, CISM, CRISC, GCIH, or GCFRExperience in cyber resilience planning, business continuity, or disaster recovery strategiesKnowledge of cloud security risks (AWS, Azure, GCP) and hybrid security modelsClearance Requirement:Active/current TS/SCI with polygraphPhysical Requirements:Must be able to remain in stationary position at least 50% of the timeSKN.7.23

ManTech seeks a motivated, career and customer-oriented Cyber Security Operations Center (CSOC) Analyst to join our team in McLean, Virginia. As a CSOC Analyst on our team, you will lead the technical oversight and execution of cyber investigations and incident response activities within our large enterprise environment. This role is critical to detecting, analyzing, and mitigating Advanced Persistent Threat (APT) campaigns and other sophisticated cyber threats. You will act as a technical consultant within the SOC, capable of mentoring junior analysts, ensuring investigation quality, and driving improvements in response processes across all SOC domains.Responsibilities include, but are not limited to:Conduct cyber investigations and end to end incident responseProvide technical oversight and quality control across the CSOCIdentify opportunities for process improvement and efficiencies and provide change management leadership to the CSOC teamProvide mentoring and skill development to less experienced analystsMinimum Qualifications:Bachelor’s degree and 6+ years of experience in cyber security operations or incident response or High School Diploma and 10+ years of experience in cyber security operations or incident responseExperience with investigating and responding to APT threat campaigns, nation-state actors, and advanced cyber attacksExperience in host-based forensics, memory analysis or network forensicsExperience working with EDR, SIEM, SOAR, forensic tools, and malware analysis platformsKnowledge of MITRE ATT&CK and adversary tactics, techniques, and procedures (TTPs)Ability to lead and mentor less experienced team membersPreferred Qualifications:Certifications such as GCIH, GCFA, GNFA, GCFE, GREM, OSCP, or equivalentExperience with cloud security incidents (AWS, Azure, GCP) and hybrid security modelsExperience developing custom detection rules (YARA, Sigma, Snort, Suricata) and automation scripts (Python, PowerShell, Bash)Experience in penetration testing and/or CNE/CNO activitiesClearance Requirements:Must have a current/active TS/SCI w/ polygraphPhysical Requirements:The person in this position must be able to remain in a stationary position 50% of the time

ManTech seeks a motivated, career and customer-oriented CyberDetection Engineer to join our team in McLean, Virginia. As a Cyber Detection Engineer on our team, you will enhance our cybersecurity detection and response capabilities. You will play a key role in improving our ability to identify, analyze, and respond to cyber threats through custom detection logic, automated workflows, and advanced threat-hunting techniques. This role is ideal for someone with strong programming skills, deep knowledge of Security Information & Event Management(SIEM) platforms, and experience developing high-fidelity security detections and automation workflows.Responsibilities include, but are not limited to:Detection Engineering & DevelopmentSecurity Automation & OrchestrationThreat Detection & AnalysisEndpoint & Network Security (EDR & NDR)Required Qualifications:Bachelor’s Degree and 2+ years of experience in cyber security operations or High School Diploma and 6+ years of experience in operationsExperience in cyber detection engineering, threat hunting, incident response, cyber network operations (CNO) or cyber network engineering (CNE)Experience programming in Python or a similar language for automation and data analysisExperience with SIEM platforms such as Splunk, ELK, Sentinel, Chronicle, or similarExperience with YARA, Snort, Suricata, or other signature-based detection technologiesExperience working with MITRE ATT&CK framework, or similar, for adversary tactics and techniques mappingPreferred Qualifications:Experience with penetration testing, red teaming, or reverse engineeringExperience with SOAR solutions and automation workflowsExperience developing custom detection methodologiesExperience with threat intelligence platforms and integrating threat intelligence feeds into security operationsKnowledge of Windows Internals and forensic artifacts for endpoint securityCertifications such as GCDA, GCIH, GCFA, OSCP, or Splunk Certified Security ProfessionalClearance Requirements:Must have a current/active TS/SCI w/PolygraphPhysical Requirements:The person in this position must be able to remain in a stationary position 50% of the timeSKN.7.23

ManTech is seeking a highly skilled and motivated Cyber Detection and Response Analyst to join our dynamic Cyber Incident Response Team. As a key member of the team, you will be responsible for proactively monitoring, detecting, analyzing, and responding to cybersecurity incidents within our large enterprise network. Your expertise in incident detection, analysis, and response will play a vital role in safeguarding our organization's critical assets and ensuring the integrity of our information systems.Responsibilities include, but are not limited to:Incident Detection and MonitoringUtilize SIEM (Security Information and Event Management) systems and other detection technologies to identify and investigate security anomalies.Collaborate with other teams to establish and fine-tune detection rules and alerts.Incident Analysis and InvestigationConduct in-depth analysis of detected incidents to determine the nature, extent, and impact of the cybersecurity threats.Perform forensic analysis, including examining network traffic, log files, and system artifacts, to identify the root cause and potential entry points of incidents.Document incident findings, including the attack methodology, IOCs, and recommended mitigation measures.Collaborate with cross-functional teams, such as network engineers, system administrators, and legal representatives, to gather and analyze relevant information during incident investigationsIncident Response and MitigationExecute the incident response process, following established procedures and protocols, to contain, mitigate, and remediate security incidents.Coordinate with internal teams and external stakeholders to ensure a swift and effective response to incidents, including communication, containment, and recovery activities.Utilize incident response tools and technologies to facilitate the investigation, containment, and eradication of threats.Provide recommendations for remediation actions and improvements to security controls and processes based on incident findings and lessons learned.Threat Intelligence and Vulnerability ManagementStay up to date with the latest cybersecurity threats, vulnerabilities, and industry best practices.Monitor external sources for threat intelligence and emerging trends to enhance the organization's incident detection and response capabilities.Contribute to vulnerability management activities by assessing and prioritizing vulnerabilities and providing guidance on remediation strategies.Reporting and DocumentationPrepare clear and concise incident reports, including detailed timelines, analysis, and recommendations for senior management and relevant stakeholders.Maintain accurate and up-to-date documentation of incidents, investigations, actions taken, and lessons learned.Assist in the development and maintenance of incident response playbooks, procedures, and guidelines.Basic Qualifications:2+ years of experience in Cybersecurity, Information Technology , Computer Science or other relevant technical field; experience can be any combination professional experience, internships , lab work or coursework.Experience with one or more of the following: SIEM systems, network security tools, log analysis tools, cybersecurity principles, incident detection, analysis, and response methodologies, operating systems, network protocols, and security technologies.DoD 8570 IAT-II required (can be obtained after hire)Security Requirements: Active/Current TS/SCI with polygraph