Mantech seeks a motivated and career-oriented Windows Systems Administrator to join our team in Laurel, MD.You will be part of a dedicated team delivering enterprise infrastructure capabilities for a global workforce that supports a wide range of national defense missions. This role directly supports the Enterprise Infrastructure Services (EIS) organizationthe foundation of all Enterprise Information Technology (EIT) for MPO.Responsibilities include, but are not limited to:Support the implementation, troubleshooting, and maintenance of IT systemsProvide Tier 1 (Help Desk) and Tier 2/3 (Escalation) support for problem identification, diagnosis, and resolutionIdentify and resolve performance and capacity issues in Windows systems, and support hardware-related problem resolution and dispatchingDeliver detailed analysis and feedback to agency management and internal customers for escalated ticketsInstall operating system software, troubleshoot system issues, maintain system integrity, configure network components, and implement OS enhancements to improve reliability and performanceMust be willing to work a flexible schedule between 6:00am-6:00pm and may be assigned to an evening patching scheduleMinimum Qualifications:Bachelor’s degree in a technical discipline from an accredited college or university. 5 additional years of System Administrator experience might be substituted for a bachelor’s degree14+ years of experience as a System Administrator in programs and contracts of similar scope, type, and complexityExperience with configuring, maintaining and modernizing a Windows OS environmentExperience with patching Windows OS environments to meet security compliance requirementsIAT II certification (DoD 8140 required within 60 days of starting employment. Acceptable certifications include CCNA-Security/CySA+/GICSP/GSEC/Security+ CE/CND/ or SSCP)Preferred Qualifications:Familiarity with configuring, scripting, and managing Unix, and RHEL operating systemsFamiliarity with ScanboyFamiliarity with JIRA ticketing systemFamiliarity with Enclave environmentsFamiliarity with VMWareClearance Requirements:Must have a current/active TS/SCI with PolygraphPhysical Requirements:The candidate should be able to move, carry, and deliver workstations from inside the office to customer desksThe person in this position must be able to remain in a stationary position 50% of the timeMust communicate with co-workers, management, and customers via email, phone, or virtual meetings, which may involve delivering presentations. Must be able to exchange accurate information in these situations.

Type of Requisition:RegularClearance Level Must Currently Possess:Top Secret SCI + PolygraphClearance Level Must Be Able to Obtain:Top Secret SCI + PolygraphPublic Trust/Other Required:NoneJob Family:Data ScienceJob Qualifications:Skills:Kibana, Python (Programming Language), Python Numpy, TensorflowCertifications:NoneExperience:10 + years of related experienceUS Citizenship Required:YesJob Description:Deliver insights to help our clients turn data into action as a Data Scientist at GDIT. Your work will provide transformative solutions to our clients’ big-data obstacles and help advance the mission. Here, you can make a meaningful impact on our clients’ mission and on your career.At GDIT, people are our differentiator. As a Data Scientist you will help ensure today is safe and tomorrow is smarter. Our work depends on Data Scientist joining our team who will be hands on and provide oversight for overall Data Scientist Team. This is a role supporting Data Scientist tasks and PM responsibilities tracking, working with stakeholder.WHAT YOU'LL NEED TO SUCCEED:Education: BA/BS in Information Technology or related field or the equivalent combination of education, technical certifications or training, or work experienceExperience: 10+ yearsTechnical skills:Demonstrated experience generating ideas for revolutionary technologies supporting operations in the hard target mission space.Demonstrated experience with entrepreneurial leadership in developing, pitching, selling, and deploying new technologies to solve operational problems.Demonstrated experience with JavaScriptDemonstrated experience in Python development with expertise in Python data analytics packages such as Pandas, NumPy, SciPy, Gensim, and Scikit-learn.Demonstrated experience with AI/ML technologies and packages, such as TensorFlow, PyTorch, and scikit-learn.Demonstrated experience with ML model development on text data, including NLP, and structured datasets.Demonstrated experience with data visualization technologies and packages, such as Kibana, Bokeh, Leaflet/Folium, and Tableau.Demonstrated experience handling restricted data sets, both at the individual and system level.Demonstrated experience working with data spread across multiple enclaves.Demonstrated experience documenting and editing the results of technical analysis for publication to non-technical audiences.Demonstrated experience solving tough problems by developing repeatable methodologies.Security Clearance Level: TS/SCI with PolygraphLocation: McLean, VA - On Customer SiteUS Citizenship RequiredGDIT IS YOUR PLACE:401K with company matchComprehensive health and wellness packagesInternal mobility team dedicated to helping you own your careerProfessional growth opportunities including paid education and certificationsCutting-edge technology you can learn fromRest and recharge with paid vacation and holidays#JET#GDITEnhanced2025The likely salary range for this position is $158,100 - $213,900. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.Scheduled Weekly Hours:40Travel Required:Less than 10%Telecommuting Options:OnsiteWork Location:USA VA McLeanAdditional Work Locations:USA VA HerndonTotal Rewards at GDIT:Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.Join our Talent Community to stay up to date on our career opportunities and events atgdit.com/tc.Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

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 in incident response or security operations center or a cyber security related role.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 time

Type of Requisition:RegularClearance Level Must Currently Possess:Top Secret SCI + PolygraphClearance Level Must Be Able to Obtain:Top Secret SCI + PolygraphPublic Trust/Other Required:NoneJob Family:Data ScienceJob Qualifications:Skills:Data Engineering, Data Science, Oracle, Structured Query Language (SQL)Certifications:NoneExperience:10 + years of related experienceUS Citizenship Required:YesJob Description:The Data Scientist will deploy, fine-tune, and monitor production machine learning models in a production environment. Additionally, they will provide support in the areas of data extraction, transformation and load (ETL), data mapping, analytics, operations, databases, and maintenance of data and associated systems. As a member of the team, candidate will work in a multi-tasking, quick-paced, dynamic, process-improvement environment that requires experience with the principles of data science, data modeling, data mapping, data testing, data quality, and documentation preparation. This is a mission focused role requiring experience with deploying models in a production environment against real-time collection.HOW A DATA SCIENTIST WILL MAKE AN IMPACTCreate and maintain custody of production machine learning models across a variety of tasks, including but not limited to audio extraction, object recognition, Natural Language Processing (NLP), and other generic classification tasksOptimize existing machine learning services to better utilize current GPU capabilities and assist with road mapping future GPU requirementsDeploy machine learning models against streaming data, designed to provide near-real time analytics to augment decision makingImprove data architecture decisions with data engineers to better stage data for continuous training models in productionProvide support in the areas of data extraction, transformation and load (ETL), data mapping, analytics, operations, databases, and maintenance of data and associated systemsREQUIRED TECHNICAL SKILLSDemonstrated experience with the following: Python, Cuda, Kubernetes, CI/CD. Apache Kafka, REST architecture, Open-AI, LLMs, NLP, YOLO/Object Recognition, Whisper/Audio processingDemonstrated experience translating data insights into tools or analytic capabilities that inform operational decisions and/or improve processesDemonstrated experience with relational databases (SQL, Oracle) and NoSQL databases (Elasticsearch, Neo4J, Redis)Demonstrated experience with GPU processingDemonstrated experience applying machine learning methodologies to build high-quality prediction modelsFamiliar with servers operating systems; Windows, Linux, Distributed Computing, Blade Centers, and cloud infrastructureFamiliar with database methodologiesFamiliar with Source code management and integration (ex - GitHub/GitLab, Jenkins, RunDeck)Familiar with Data Science frameworks such as Keras, Tensorflow, or TheanoAbility to work well in a fast-paced, constantly evolving work environment with a focus on continual process improvement and a proactive approach to problem solvingWHAT YOU’LL NEED TO SUCCEED:10+ years of related data science/statistical experience and 2+ years of software engineering or data engineering experienceBachelor’s or Technology degree in Engineering or a related specialized area/field, OR equivalent 4 additional years job-related experienceTS/SCI with SCI Poly clearanceExcellent organizational, coordination, interpersonal and team building skillsLocation: At Customer Site – near Tyson CornerGDIT IS YOUR PLACE: 401K with company match Comprehensive health and wellness packages Internal mobility team dedicated to helping you own your career Professional growth opportunities including paid education and certifications Cutting-edge technology you can learn from Rest and recharge with paid vacation and holidays#OpportunityOwned#GDITCareers#WeAreGDIT#GDITPolyEvent#JET#GDITEnhanced2025The likely salary range for this position is $161,500 - $218,500. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.Scheduled Weekly Hours:40Travel Required:NoneTelecommuting Options:OnsiteWork Location:USA VA McLeanAdditional Work Locations:Total Rewards at GDIT:Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.Join our Talent Community to stay up to date on our career opportunities and events atgdit.com/tc.Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

ManTech seeks a motivated, career and customer-oriented CNO Software Developer to join our team in Hanover, MD.Responsibilities include, but are not limited to:Design and develop new hardware or software based CNO capabilities.Assist with designing, developing, documenting, testing, and debugging of applications software and systems.Apply knowledge of security concepts and networks.Ensure software standards are met.Minimum Qualifications:Bachelors Degree in Computer Science and 2+ years development experience.Experience programming in Python and C/C++Experience with troubleshooting and debuggingExperience with networking (TCP/IP) and socket level programmingPreferred Qualifications:Experience with CNO developmentExperience with Software Analysis or Reverse EngineeringExperience with assembly programming concepts.Experience with Unit TestingExperience using Atlassian products like JIRA, Confluence, Crucible or similarSecurity Clearance Requirements:Active/current TS/SCI with polygraphPhysical Requirements:Ability to remain stationary up to 50% of the time

ManTech seeks a motivated, career and customer-oriented Associate CNO Software Developer to join our team in Hanover, MD.Responsibilities include, but are not limited to:Design and develop new hardware or software based CNO capabilities.Assist with designing, developing, documenting, testing, and debugging of applications software and systems.Apply knowledge of security concepts and networks.Ensure software standards are met.Minimum Qualifications:Bachelor's degree or equivalent OR 4+ years of relevant experience without a BS degree.Experience in Python and C/C++ programming.Troubleshooting / debugging experience.Experience with networking (TCP/IP) and socket level programming.Preferred Qualifications:Understand CNO development concepts.Software Analysis/Reverse Engineering experience.Understand assembly programming concepts.Unit Test experience.Experience using Atlassian products (JIRA, Confluence, Crucible)Ability to handle stress and work well under pressure.Analytical and Critical Thinking Skills.Security Clearance Requirements:Current, active TS/SCI with Polygraph is required.Physical Requirements:Ability to remain stationary for extended periods (50% of the time) and operate computer equipment and office machinery.Regular communication with co-workers, management, and customers.

MANTECH seeks a motivated, career and customer-oriented Executive Director of Business Development and Capture - Full Spectrum Cyber to join our team in Hanover, MD.This position is in support of cyber network operations opportunities within the IC and select DoD organizations such as US CYBERCOM. They work closely with the Vice President of at least two divisions and the Vice President of Growth for the Intel Sector to develop an executable Market Account Plan that focuses on identifying, qualifying, and winning new business with this customer.Responsibilities include but are not limited to:Drive business expansion efforts within the Intelligence Community and DoD, with a focus on Cyber organizations across military branches and their interactions with USCC and the IC.Identify, qualify, and pursue new business opportunities in cybersecurity, IT, software development, infrastructure, and analytics across the organization and its stakeholders.Cultivate deep knowledge of MANTECH’s capabilities, technology, and business objectives and align solutions that successfully support cyber related missions by collaborating with operational and technical teams.Build and manage strong customer relationships and industry partnerships to support long-term growth and teaming opportunities.Analyze customer budgets (e.g., NIP/MIP) and market trends to uncover actionable opportunities within the Cyber domain.Lead opportunity capture strategies and proposal development efforts by working closely with proposal operations, solutions architects, line operations, business growth colleagues, and other corporate resources and leadershipMaintain a robust pipeline and execute a structured customer call plan, providing introductory and ongoing briefings with various leadership and management teams through development and execution.Minimum Qualifications:Bachelor's Degree from an accredited institution, preferably with a technology background12+ years performing Business Development (sales, marketing, capture) activities in the IC, with direct Cyber experience within the last 3 years. Strong preference for candidates that also managed programs with this customer. A combination of direct industry program and business development experience may also be considered.Prior experience developing business to and/or strong relationships within some/all DoD Cyber organizations and USCC or MPO is required, including knowledge of the various organizations, missions, and stakeholders.Demonstrated track record of consistently winning opportunities up to $100M; experience with prospects greater than $100M strongly desired.Strong understanding of the Cyber practice, either through roles as a Cyber SME, academic background, technical experience, or familiarity of mission in order to engage with customers/stakeholders such as the J2.Preferred Qualifications:Strong reputation in the appropriate customer Cyber communities and have a mix of direct program experience and familiarity with one/more of the Cyber solutions areas (such as Offensive Cyber, Cyber Defense, Cyber Resilience, Cyber Analytics, Risk Management Compliance, Cyber Training, Cyber Range Services)Clearance Requirement:Must have a current/active TS/SCI with Polygraph.Physical Requirements:Must be able to remain in stationary position for up to 50% of the time.Must be able to deliver clear and effective communication both verbally and non-verbally to deliver updates; briefings; or interface with co-workers; leadership as well as customer.Must be able to work in an office environment and be able to freely move within this space to utilize office equipment as well as interface with co-workers and customers.Must be able to effectively use IT peripherals such as laptop, desktop, printer, etc.

ManTech seeks a motivated, career and customer-oriented CNO Software Developer to join our team in Hanover, MD.Responsibilities include, but are not limited to:Design and develop new hardware or software based CNO capabilities.Assist with designing, developing, documenting, testing, and debugging of applications software and systems.Apply knowledge of security concepts and networks.Ensure software standards are met.Minimum Qualifications:Bachelor's degree in Computer Science or similar technical field or High School Diploma and 4+ years of relevant experienceExperience programming in Python and C/C++Experience with troubleshooting and debuggingExperience with networking (TCP/IP) and socket level programmingPreferred Qualifications:Experience with CNO developmentExperience with Software Analysis or Reverse EngineeringExperience with assembly programming concepts.Experience with Unit TestingExperience using Atlassian products like JIRA, Confluence, Crucible or similarSecurity Clearance Requirements:Active/current TS/SCI with polygraphPhysical Requirements:Ability to remain stationary up to 50% of the time

ManTech is seeking a motivated, career and customer-oriented ExpertCNO Software Developer to join our team in Hanover, MD. As a valued member of our organization, you will play a pivotal role in developing advanced cyber capabilities while delivering exceptional service to our clients.Responsibilities include, but are not limited to:Design and develop new hardware or software based CNO capabilities.Manage the designing, developing, documenting, testing, and debugging of applications software and systems.Apply expert knowledge of security concepts and networks.Communicate status with leadership and customers.Ensure software standards are met.Minimum Qualifications:Bachelor's degree and 8+ years of relevant experience, OR 10+ years of relevant experience if no degree.Proficiency in Python and C/C++ programming.Troubleshooting / debugging experience.Proficiency in low-level internals in one or more technology areas (e.g. Windows, Unix, Mobile, Network devices).Proficiency with networking (TCP/IP) and socket level programming.CNO capability development experience.Preferred Qualifications:Software Analysis/Reverse Engineering experience.Understand assembly programming concepts.Unit Test experience.Experience using Atlassian products (JIRA, Confluence, Crucible)Experience managing/leading teamsSecurity Clearance Requirements:Active, current TS/SCI with Polygraph is required.Physical Requirements:Ability to remain stationary for extended periods (50% of the time) and operate computer equipment and office machinery.Regular communication with co-workers, management, and customers.

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-orientedPrincipal Systems Administratorto join our team inPentagon, VA. The position is onsite. Responsibilities include but are not limited to:Provide specialized support and troubleshooting for VIP users, including hardware, software, network, and application issuesManage and maintain computer systems, servers, and other IT infrastructure, ensuring optimal performance and securityManage VIP user accounts, permissions, and security access within the organization's IT environmentIdentify, diagnose, and resolve technical issues related to VIP user's IT needsMaintain accurate and up-to-date documentation of IT systems, procedures, and user support informationCollaborate with other IT staff and stakeholders to ensure smooth IT operations and address VIP user needsStrong technical skills in areas such as Windows and Linux operating systems, network administration, virtualization, and securityExcellent problem-solving and troubleshooting skills to quickly identify and resolve issuesStrong communication and interpersonal skills to interact with VIP users and IT staffExperience in managing and supporting complex IT environments, especially for VIP usersManaging desktop computers, servers, and other hardware devices for VIP usersInstalling, configuring, and updating software applications used by VIP usersTroubleshooting and resolving technical issues related to VIP users' hardware, software, and network accessCreating, modifying, and managing VIP user accounts and permissionsSupporting and maintaining specialized software and hardware used by VIP usersProviding training and support to VIP users on new software and hardwareManaging Active Directory and other infrastructure core servicesProviding support for thin clients and virtual desktop environmentsSupporting and maintaining COTS and custom softwareCollaborating with other teams to ensure technology needs are met for eventsMinimum Qualifications:Bachelor’s degree in a technical field and 7+ years of experience in the Information Technology; an additional 4 years of Systems Administration experience can be substituted in lieu of a degreeUnderstanding of operating systems (Windows, Linux, macOS), servers, and networkingExperience with network protocols (TCP/IP), switch configurations, and firewalls is essentialExperience with scripting languages (e.g., Python, PowerShell) for automating tasks and improving efficiencyMicrosoft Visio, Word, Excel experience CASP+ Certification or ability to obtain within 6 months of hireDoD 8570 Computing Environment Certification or ability to obtain within 6 months of hireKnowledge of Microsoft Windows Systems, HP SANs, VMware productsExperience using a Service Desk ticketing system, such as Remedy or ServiceNowPreferred Qualifications:One of the following certifications is desired:MCSE - Microsoft Certified System Engineer, MCSE - Microsoft Certified Solutions Expert, MCSA - Microsoft Certified Solutions Associate, MCITP - Microsoft Certified Information Technology Professional, VMware VCP - VMware Certified Professional, CCNA - Cisco Certified Network AdministratorITIL Foundations or later certification General Dynamics Encryptor experienceSolarWinds experience and knowledgeCisco Prime Infrastructure experience and knowledgeSecurity Clearance Requirements:US Citizenship required and an active TS/SCI clearance adjudicated within the last 6 years.Physical Requirements:Must be able to remain in a stationary position 50%.Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.Frequently communicates with co-workers, management, and customers, which may involve delivering presentations.Must be able to exchange accurate information in these situations.