ManTech seeks a motivated, career and customer-oriented Lead Data Scientist to join our Data and AI Practice onsite in Chantilly and/or Herndon, VA. You will be a key member of a dynamic, cross-functional team focused on transforming how Government clients extract insights from data to achieve critical mission objectives. This leadership role involves guiding a team and collaborating with others to implement this transformative process. You will be responsible for providing expert guidance and support in the analysis, design, implementation, and optimization of complex, enterprise-wide, cloud-based data science and analytics solutions that align with mission goals and requirements.Responsibilities include but are not limited to:Lead the design, development, and deployment of cloud-based analytics and data science solutions.Develop models and solutions applied to problem sets in a broad range of data science and data analytics areas, including but not limited to, graph analytics, anomaly detection, geo-spatial analysis, and data visualization.Perform knowledge elicitation from client of business problem details and incorporate that knowledge into algorithms, models, analytics and approaches in client solutions.Contribute data science expertise to solution development through whiteboarding sessions with clients, partners, and coworkers.Address data science technical challenges in the development of solutions, including algorithms, models, data manipulation, or other technical challenges related to data science and data analytics.Collaborate with clients to understand their business needs and translate them into technical requirements.Ensure the quality and performance of analytics solutions through rigorous testing and validation. Adhere to security and compliance standards, ensuring the protection of sensitive government data.Minimum Qualifications:Bachelor’s degree in Computer Science, Engineering, or Mathematics, Applied Mathematics, Statistics, Applied Statistics, Machine Learning, Data Science, or related field and 10 years of experience OR a Master's degree and 8 years of experience.Proven experience in Oracle Analytics Cloud or similar analytics platforms.Demonstrated ability to lead and manage a team of engineers.Management experience, including project, people, customer, and financial management.Understanding of security and compliance standards related to handling sensitive Government data.Preferred Qualifications:Master’s degree in Computer Science, Engineering, or Mathematics, Applied Mathematics, Statistics, Applied Statistics, Machine Learning, Data Science, or a related field.Advanced certifications in Oracle Analytics Cloud or related technologies.Experience in developing and implementing machine learning models.Strong communication and interpersonal skills to effectively collaborate with clients and team members.Clearance Requirements:Must possess a current and active TS/SCI with polygraphPhysical Requirements:Must be able to be in a stationary position more than 50% of the timeMust be able to communicate, converse, and exchange information with peers and senior personnelConstantly operates a computer and other office productivity machinery, such as a computerThe 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 situationsThe person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.

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:Atlassian Confluence, Atlassian JIRA, DevSecOps, Scripting Languages, Software DevelopmentCertifications:NoneExperience:20 + years of related experienceUS Citizenship Required:YesJob Description:A career as a Data Scientist at GDIT means being a critical part of successful data outcomes. Here, your work can accelerate solutions for our clients while you accelerate your career. Own the opportunity to build your skills as you provide our clients with the data they need to turn insights and ideas into action.At GDIT, people are our differentiator. As a Data Scientist supporting our client in Reston, you will help ensure today is safe and tomorrow is smarter. Our work depends on Data Scientist joining our team.WHAT YOU’LL NEED TO SUCCEED:Education: Bachelor’s degree in Computer Science, Engineering, or a related technical discipline, or the equivalent combination of education, technical certifications or training, or work experience.Experience: 20+ yearsTechnical skills:Demonstrated experience in software development using JAVA and python languages.Demonstrated experience in DevSecOps activities for large environments.Demonstrated experience in identifying and documenting technical risks.Demonstrated experience in managing large operational environment account management.Demonstrated experience using JIRA, Confluence, and GIT as part of an agile development environment.Demonstrated experience working with container orchestration technologies such as Kubernetes.Demonstrated experience and understanding of IT Service Management and common SLA measurements.Demonstrated experience performing security administration activities such as LDAP.Demonstrated experience creating and maintaining operating processes and procedures.Demonstrated experience resolving routine to highly complex inquiries.Demonstrated expertise with MS Outlook, Office, and working knowledge of standard operating tools and applications.Demonstrated experience providing high level customer service supporting users, managers, and staff.Demonstrated experience communicating complex technical material and translating into non-technical terms for broad audienceSecurity clearance level: TS/SCI with PolygraphDesired skills and experience:Demonstrated knowledge of help desk processes and procedures.Demonstrated knowledge of tracking tools and governance processes.Demonstrated expertise in analytic and critical thinking.Demonstrated expertise in managing difficult situations with diplomacy, patience, and flexibility.Certifications such as:Certified Kubernetes Application DeveloperMicrosoft Certified Solutions DeveloperAWS Certified Solutions ArchitectAWS Machine Learning Certification(s)Agile certificationSecurity+GIAC Security Essentials Certification (GSEC)Location: Reston, VA (On Customer Site)US 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#OpportunityOwned#GDITCareers#WeAreGDIT #JET#GDITEnhanced2025The likely salary range for this position is $183,498 - $247,428. 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 RestonAdditional 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 is seeking a motivated, career and customer-oriented AI Application Architect to join our team in the Northern VA area. As an AI architect, you will provide guidance and assistance in the analysis, design, implementation and optimization of enterprise wide complex cloud architectures based on customer mission objectives and needs. This is a fully onsite position in the Northern VA region.Responsibilities include but are not limited to:Implement creative and innovative solutions with significant industry-wide impact.Analyze customer missions and business needs to ensure solutions meet objectives using Oracle Cloud Infrastructure best practices, product knowledge, and business acumen.Recommend enhancements to meet highly complex customer needs.Lead the design and implementation of scalable cloud infrastructure for large-scale AI/ML management applications.Design and implement a scalable, cloud-hosted data platform supporting complex organizations with strict access control and governance.Ensure interoperability with multiple cloud providers, open-source software, GOTS, COTS technologies, and AI/ML models, supporting a Zero Trust Architecture (ZTA).Monitor and optimize costs versus performance tradeoffs, enabling secure data product creation, sharing, and reuse within established data policies.Collaborate with development and data science teams to ensure infrastructure supports the solution lifecycle, including continuous integration and deployment.Facilitate the transition to hybid on-premise/cloud architecture.Minimum Qualifications:Bachelor’s degree in Computer Science, Engineering, Information Technology, or related technical areaMinimum of 12 (10 with Master’s) years of experience in software or system architecture and design.Minimum of 4 years of consulting management experience with financial management responsibility.Management Experience: Direct Line Management experience required (including project, people, customer, and financial management).Proven track record of developing and managing AI/ML systems and deploying into production environments.Familiarity with machine learning and generative AI, object-oriented programming languages, cybersecurity, and relational databases.Knowledge and experience working with federal compliance and guidance, such as FISMA, RMF, Federal Enterprise Architecture Framework, DoDAF, NIST Cybersecurity Framework, NIST 800 series, FedRAMP and cloud-based security controls.Experience with architectures supporting full Software Development Life Cycle (SDLC) and/or Machine Learning Operations (MLOps)Strong oral and written communication skills, including client-facing discussions and presentations.Proficiency in architecting and designing cloud environments and infrastructure. Must understand the tradeoffs when choosing services and approaches to system design.Preferred Qualifications:Master's degree in a related field.Proficient at managing managers and large team.Experience developing and deploying large AI/ML systems.Experience with data fabrics and big data platforms.Clearance Requirements:Must possess a current and active TS/SCI with polyPhysical 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 Oracle Cloud Engineer to join our team in Herndon, Virginia. The Oracle Cloud Engineer will be tasked to design, implement, and maintain cloud-based solutions on Oracle Cloud Infrastructure (OCI) supporting a high priority mission at one of our National Intelligence Customers. In this role, you will work closely with architects, DevOps, and database teams to optimize Oracle cloud environments, ensure security and scalability, and support mission-critical applications.Responsibilities include but are not limited to:Design & Deploy: Architect and deploy scalable and secure solutions onOracle Cloud Infrastructure (OCI).Automation & Optimization: ImplementIaC (Infrastructure as Code)using Terraform, Ansible, or OCI Resource Manager to automate cloud provisioning.Database & Storage Management: Manage Oracle Cloud databases (Autonomous DB, Exadata, Oracle RAC) and storage solutions (Object Storage, Block Volumes).Networking & Security: ConfigureVCNs, subnets, load balancers, and security listsfor cloud applications.Monitoring & Performance Tuning: Use OCIMonitoring, Logging, and Performance Hubto optimize cloud resources and troubleshoot performance bottlenecks.Disaster Recovery & High Availability: Designbackup, replication, and failoverstrategies for critical workloads.Cloud Cost Optimization: Monitor resource utilization and implementcost-saving strategiesto optimize OCI spending.Compliance & Security: Ensure compliance with industry security standards (NIST 800-53) and implement best practices forIAM policies and access controls.Minimum Qualifications:7+ yearsof hands-on experience with a Cloud Service Provider (CSP) orOracle Cloud Infrastructure (OCI).Proficiency in deploying and managing OracleAutonomous Database, Oracle Exadata, and Oracle Cloud VM instances.Expertise inTerraform, Ansible, or OCI Resource Managerfor infrastructure automation.Strong understanding ofnetworking concepts (VCNs, Load Balancers, VPN, FastConnect).Experience withOracle Identity and Access Management (IAM)and security policies.Hands-on experience withLinux environments, scripting (Bash, Python), and CI/CD pipelines.Knowledge ofCloud monitoring toolssuch as Oracle Cloud Monitoring, Prometheus, or Grafana.Preferred Qualifications:Hands-on experience working with and developing on OCI, particularly 2 years of consulting experience preferred.Oracle Cloud certifications(e.g., Oracle Cloud Infrastructure Architect Associate/Professional).Experience withmulti-Cloud environments (AWS, Azure, GCP, OCI) and hybrid cloud solutions.Background inDevOps, Kubernetes, or containerized deployments on OCI or another cloud provider.Strong knowledge ofOracle Database Administration (DBA)and SQL performance tuning.Clearance Requirements:Must have active TS/SCI with Full Scope PolygraphPhysical Requirements:Must be able to remain in a stationary position 50% of the time.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.

ManTech seeks a motivated, career and customer-oriented Cyber Security Analyst to join our team in Herndon, VA. TheCyber SecurityAnalystwill be in support of a high priority mission at one of our National Intelligence Customers. The ideal candidate will possess experience in monitoring, analyzing, and securing federal information systems while ensuring compliance with governmentcybersecurityframeworks such as NIST 800-53 and RMF. This role plays a vital part in detecting threats, supporting audits, and enabling continuous monitoring efforts across complex environments.Responsibilities include but are not limited to:Monitor, investigate, and respond tocybersecurityevents and alerts across enterprise systems.Conduct security assessments, vulnerability scans, and assist with remediation planning.Support compliance efforts for RMF and NIST 800-53.Prepare and maintain documentation for system security plans (SSPs), POA&Ms, and other A&A artifacts.Assist with the implementation and maintenance of security tools (SIEM, vulnerability scanners, endpoint protection).Analyze threat intelligence feeds and identify indicators of compromise (IOCs) relevant to federal systems.Participate in incident response, loganalysis, and forensic investigations when required.Collaborate with system owners, ISSEs, ISSEMs, ISSOs, and engineers to ensure security controls are effectively implemented.Stay current on evolvingcyberthreats, federal mandates, and best practices incybersecurity.Minimum Qualifications:Bachelor’s degree in a related field OR high school diploma and additional 4+ years of work experience in a related field4+ years of experience in cybersecurity, security operations, or risk managementFamiliarity with federal cybersecurity frameworks (e.g., RMF, NIST 800-53, FISMA)Cloud security experience with AWS, Azure, GCP or Oracle CloudExperience supporting Intelligence Community customersPreferred Qualifications:DoD 8570-compliant certification (e.g., Security+, CYSA+, CEH, or CISSP)Experience with security tools such as Splunk, Tenable Nessus, CrowdStrike, or WiresharkFamiliarity with SCAP tools, STIGs, or automated compliance reportingKnowledge of incident response and digital forensics processesClearance Requirements:Must have active TS/SCI with Full Scope PolygraphPhysical Requirements:Must be able to remain in a stationary position 50% of the timeNeeds 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.

ManTech seeks a motivated, career and customer-oriented Technical Writer to join our team in Herndon, VA, to create and maintain technical documentation related to a mission-critical application in support of one of our key National Intelligence Customers. Responsibilities include, but are not limited to: Create andmaintaintechnical documentation for software applications, systems, and processes, including user manuals, system guides, release notes, and knowledge base articles. Collaborate with subject matter experts and software developers to gather information and understand complex technical concepts. Translate technical information into clear and concise documentation that is easily understandable by end-users. Ensure the accuracy, consistency, and quality of all technical documentation produced. Organize and structure information effectively tofacilitateeasy navigation and retrieval of documentation. Review and edit existing documentation to improve clarity, accuracy, and readability. Collaborate with cross-functional teams, including software developers and solutions architects, to gather information and provide input on documentation requirements.MinimumQualifications: Bachelor’sdegree in Technical Writing, English, Information Security, Computer Science, or related field of study4+years of experience in Technical Writing in the Intelligence CommunityProficiencyin using documentation tools and software, such as Microsoft Word, Adobe Acrobat, and content management systemsAbility to work independently and collaboratively in a fast-paced environmentStrong organizational and time management skills, with the ability to prioritize and meet deadlinesPreferred Qualifications:Familiarity with Information Technology Infrastructure Library (ITIL) or other IT Service Management Frameworks. Knowledge of IT security best practices and compliance standards (e.g., ISO 27001, NIST 800-53) Certifications in technical writing, documentation management, or related field (e.g., Technical Writer Certification, Certified Professional Technical Communicator – Foundation) Familiarity with the Agile development methodology and software development lifecycle. Clearance Requirements:Active TS/SCI with PolygraphPhysical Requirements:Must be able to remain in a stationary position 50% of the time.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.

ManTech seeks a motivated, career and customer-oriented Security Engineer to join our team in Herndon, VA. We are searching for a highly skilled Security Engineer to design, implement, and maintain secure environments that align with compliance standards in support of a high priority mission at one of our National Intelligence Customers.This role requires an individual with a strong technical foundation in cybersecurity, a deep understanding of federal security frameworks, and a proactive approach to protecting mission-critical systems.Responsibilities include but are not limited to:Implement and maintain cybersecurity solutions across classified and unclassified environmentsPerform risk assessments, vulnerability scans, and system hardening in compliance with NIST 800-53 and RMFSupport the preparation and submission of security documentation for Authority to Develop (ATD) and Authority to Operate (ATO) under IC guidelinesCollaborate with system owners, ISSOs, ISSEs, ISSMs, engineers, and auditors during security assessments and continuous monitoringMonitor and respond to security incidents, performing root cause analysis and remediationIntegrate security controls into DevSecOps pipelines and cloud architectures (AWS, Azure, GCP, or Oracle)Support development and implementation of security policies, plans, and SOPsStay current on evolving federal cybersecurity directives, threats, and compliance requirementsMinimum Qualifications:Bachelor’s degree in Cybersecurity, Computer Science, Information Systems OR 4+ years of additional equivalent experience in a related field7+ years of experience in cybersecurity or related IT security rolesExperience with NIST Risk Management Framework (RMF), FedRAMP, or DoD Cybersecurity Maturity Model Certification (CMMC)Hands-on experience working in air-gapped Cloud environmentsKnowledge of system/network security principles and incident response practicesExperience supporting the Intelligence CommunityPreferred Qualifications:DoD 8570.01-M IAT Level II or III certification (e.g., Security+, CISSP, CEH, CISM)Knowledge of STIGs, SCAP tools, and secure system baseliningHands-on experience with security tools (e.g., ACAS, Splunk, Tenable, Palo Alto, CrowdStrike, or similar)Scripting or automation experience (Python, Bash, PowerShell) to support security operationsClearance Requirements:Must have active TS/SCI with Full Scope PolygraphPhysical Requirements:Must be able to remain in a stationary position 50% of the timeNeeds to occasionally move about inside the office to access file cabinets, officemachinery, etc.Frequently communicates with co-workers, management, and customers, which mayinvolve delivering presentations. Must be able to exchange accurate information inthese situations.

ManTech seeks a motivated, career and customer-oriented Senior Network Engineer to join our team in Reston, VA location. This is an onsite position.The Network Engineer candidate will work with other Network and Systems Engineers to design, build, monitor, maintain, and upgrade all program networks to ensure data is consistently available and flowing properly.Responsibilities include but are not limited to:Designing, building, monitoring, maintaining, and upgrading all program networks and communications linksMonitoring and analyzing networks and communications links to identify and resolve architecture, provider, environment, or other issuesImplementing and maintaining effective tools to evaluate/analyze data movement and ensure data integrity throughout the networkWorking with engineering teams to troubleshoot integration issues and to maximize network and system performanceEstablishing appropriate network monitoring and early warning mechanisms to proactively identify potential issues before they impact operationsPerforming performance testing and tuning for all network and Cloud infrastructuresWorking with engineering teams to resolve reported problems and interfacing with third party vendors for monitoring, troubleshooting, tracking, and reporting metricsBasic Qualifications:10+ years of relevant experience serving as a Network Engineer or performing similar technical dutiesStrong experience with network hardware configuration and maintenance in large-scale environmentsStrong experience with relevant networking and firewall technologies such as Cisco and Palo AltoStrong network administration experience in areas such as DNS, routing, firewall configuration, scripting and automationStrong Cloud experience, including remote management, with technologies such as AWSStrong experience performing Tier 2-4 network troubleshooting and resolving issuesPreferred Qualifications:Prior experience managing and maintaining complex networks used to transport data worldwideAbility and willingness to travel internationally, if requiredClearance Requirements:Must possess an active/current TS/SCI w/ polygraph.Physical Requirements:Must be able to be in a stationary position more than 50% of the timeMust be able to communicate, converse, and exchange information with peers and senior personnelConstantly operates a computer and other office productivity machinery, such as a computerThe 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 situationsThe person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.