ManTech seeks a motivated, career and customer-orientedCNO SoftwareEngineer to join our team in the Hanover, Maryland location. Provides specialized development, testing and evaluation capabilities tailored to system functions.Responsibilities include, but are not limited to:Develop and code in Python, Java and XML, ensuring software standards are metPerform system and subsystem definition, preliminary and detailed design, design implementation, and subsystem and system integration and tests for a systemResearch requirements for a product, including CNO deployment environment, performance criteria, and competitive issuesDesign for new capabilities or recommendations for improvements to existing capabilitiesDetermining computer user needs; analyzes system capabilities to resolve problems on program intent, output requirements, input data acquisition, programmingDebug and troubleshoot software, modify existing software to correct errors, to adapt to new requirements, or to improve performance and perform quality control on team productsCoordinating and performing software deployments for developed productsMinimum Qualifications:Bachelor’s degree in Computer Science or related field and 7+ years of programming experience or High School Diploma and 11+ years of programming experienceExperience developing and coding in Python and JavaExperience with build environments such as Gradle or MavenExperience with Object Oriented Analysis and DesignKnowledge of Software Version ControlKnowledge of CNO environmentKnowledge of Agile software development methodologyKnowledge of XML or XSLTPreferred Qualifications:Experience with SQL and NoSQL databasesSubversion/GIT experienceAtlassian Tools (Confluence, Jira, Bamboo, Crucible)Security Clearance Requirements:Must have an active/current TS/SCI with PolygraphPhysical Requirements:Must be able to remain in a stationary position 50% of the time

MANTECH seeks a motivated, career- and customer-oriented Python Software Engineer in Herndon, VA. In this role, you will be responsible for making cyber-relevant data accessible, usable, and secure for analysts and mission stakeholders. You will support efforts to build and maintain data pipelines that convert raw cybersecurity data into structured formats optimized for analysis and support the development, transformation, and availability of large-scale datasets.Responsibilities include, but are not limited to:Developing, testing, and maintaining high-quality production-level software using Python and bash scriptingAnalyzing datasets, generating data dictionaries, and defining field transformationsParticipating in code reviews, identifying areas for improvement, and implementing practical solutionsIngesting, querying, and reviewing data using Elasticsearch and KibanaCollaborating with cross-functional teams to diagnose, debug and resolve data parsing and production issuesCreating large-scale data pipelines with high throughputStaying up to date with emerging trends and technologies, especially those pertaining to Python developmentMinimum Qualifications:Bachelor's degree in Computer Science or a related field and 3+ years of programming experience or High School Diploma and 7+ years of experienceExperience using Python to build command line applications, maintain shared code libraries, and manipulate data formats like JSON, JSONLines, CSV, XML or similarExperience in Git and GitHub workflows, including branching, pull requests, code reviews, merges, and conflict resolutionExperience with Bash and working with compressed filesExperience ingesting data for Elasticsearch, Lucene, Solr, or similar search enginesAbility to perform software installation, configuration, shell scripting, and troubleshooting in LinuxAbility to interface programmatically with AWS services like S3 or EC2 using PythonClearance Requirements: Must have an active/Current TS/SCI with polygraphPhysical Requirements:Must be able to remain in a stationary position 50%

ManTech seeks a motivated, career and customer-oriented Cyber Network Defense Analyst in Herndon, VA.As a CND Analyst on our team, you will use your expertise in specialized network defense to provide innovative and creative solutions to challenging cyber security problems. You will utilize the latest cyber tools available and assist with creating new ones while allowing you to advance the nation's information security posture.Responsibilities include, but are not limited to:Provide malicious code detection, intrusion detection, and information security tool development and integration.Utilize forensic analysis to identify malware, misuse, and/or unauthorized activity.Investigate and report on virus and malware alerts or incidents to determine root cause, entry point of code and damage risk.Analyze all data sources, including Internet, Intelligence Community (IC) reporting, security events, firewall logs, and other data sources to identify malware, misuse, unauthorized activity or other cyber security related concerns.Track intelligence using open source and classified sources to identify malicious code threats and provide solutions to counteract that threat.Manage and administer the tuning of rules, signatures, and custom content for CND applications and systems and identify potential conflicts with implementation of any CND tools within the enterprise and develop recommendations to remediate these conflictsProvide logical use case development.Provide and track requirements to engineering partners.Identify gaps in visibility or coverage of cyber defense systems.Prepare data analytics and reporting.Minimum Qualifications:High School Diploma and 11+ years of experience in a cyber security or network security role, or Bachelor’s degree in a technical field with 7+ years of experienceExperience writing script in programming languages such as Python, JavaScript, Yara or SnortExperience using SIEM tools for case development and applicationExperience with network security applications, protocols, and associated hardwareExperience with one or more of the following classes of enterprise cyber defense technologies: SysMon, Network and Host based IDS and IPS, Network and host-based malware detection and prevention, Endpoint Detection & Response (EDR) and Network Detection & Response (NDR), Network and Host malware detection and prevention (EDR/NDR) tools, Web/Email gateway security technologies, Security Orchestration, Automation and Response (SOAR) or Cloud Based platforms such as Azure, AWS, or GooglePreferred Qualifications:Experience working with MITRE ATT&CKExperience with Splunk or Splunk Enterprise SecurityExperience with forensics tools and applicationsClearance Requirements: Must have an active/Current TS/SCI with polygraphPhysical Requirements:Must be able to remain in a stationary position 50%

Mantech seeks a highly technicaland mission focused Cyber Systems Engineer to join our team inHerndon, VA.This position can also be based in McLean, VA with weekly travel the Herndon, VA per customer requirements.This role is critical in enhancing our cyber defense capabilities through building and maintaining a cyber test range for the customer. Join an elite team of experts helping to defend critical national security assets.Responsibilities include, but are not limited to:Design, implement, and manage secure, scalable systems across Windows, Linux, and cloud environments.Manage system configurations, patches, and updates in Windows, Linux, or hybrid environments.Develop and maintain scripts and automation tools using Python or similar programming languagesOversee virtual infrastructure (VMware, Hyper-V or similar) and deploy systems in AWS or Azure.Implement and manage automation workflows using SOAR platforms. Develop automated incident response playbooks to streamline CSOC processes.Enhance the effectiveness ofEndpoint Detection and Response (EDR)solutions,Digital Forensicsplatforms, andSecurity Information and Event Management (SIEM)systems (Splunk, Elk or similar)Minimum Qualifications:High School Diploma and 11+ years of experience as a Cyber Engineer, Systems Engineer or similar role within a cybersecurity environment or Bachelor’s degree in a technical field and 7+ years of experienceExperience with Python, Javascript, Ruby, Perl or similar programming languages8+ years of experience with Operating Systems, Network Infrastructure, Security Principles, and System ArchitecturePreferred Qualifications:Relevant certifications such as CISSP, GIAC, CEH or similarExperience with automation and SOAR platformsStrong analytical, problem-solving, and communication skillsClearance Requirements:Must have a current/active TS/SCI w/Polygraph clearancePhysical Requirements:The person in this position must be able to remain in a stationary position 50% of the time.

Mantech seeks a ManTech seeks a motivated and mission-focused Software Tester to join our team in Herndon, VA.As a Software Tester on our team, you will play a key role in delivering automation and big data analytics solutions to the Intelligence Community. This role combines rigorous software testing with hands-on end-user support to ensure reliable, high-quality performance across critical applications.Responsibilities include, but are not limited to:Execute all aspects of software testing, including regression testingLearn the applications and develop test cases and result reporting to support software releasesTest application features and functionality for both expected and edge-case behaviorsEnhance testing capabilities and ensure robust and efficient quality assurance processesUnderstand the user experience by directly engaging with staff, customers, and end-usersTriage, troubleshoot, and respond to user support requests (approximately 20% of the time)Contribute as an active member of a fast-paced agile development teamMinimum Qualifications:High School Diploma and 5+ years of experience in software integration or software testing or Bachelor’s degree in a technical field and 1+ years of experienceExperience with testing and debugging COTS and/or GOTS softwareExperience adapting to new system interfacesPreferred Qualifications:Experience with Selenium or other testing automation toolsExperience testing in CentOS, RHEL, SE Linux, and Windows environmentsClearance Requirements:Active/current TS/SCI with Polygraph is required for this positionPhysical Requirements:Must be able to remain in a stationary position 50%

ManTech seeks a motivated, career and customer-oriented Python Software Developer join our team in Herndon, VA.Join an elite team of Software Developers, Data Engineers, and System Engineers who are developing and deploying unprecedented capabilities for the Intelligence Community. If you’re interested in directly changing the way new technology is used to protect our country, come join us! Responsibilities include but are not limited to:Develop, build, and optimize systems for data collection, storage, access, and analytics at enterprise scale; make data available, accessible, and secure to all stakeholdersDevelop robust and resilient data pipelines to connect data sources to analytics toolsAnalyze data sources for accuracy, data prioritization, and apply appropriate logic to developed solutionsWork with various team members to craft solutions to requirements and help refine the requirements for implementationEnumerate the necessary datasets and design the data model and schemas to support the requirementsProvide platform support, including problem solving and debugging, for production issuesFollow the deployment procedures and standard operating procedures utilized by the team, Coach junior team members through the Software Development Life Cycle processMinimum Qualifications:Bachelor’s degree in Computer Science or Information Technology and 7+ years’ experience in application development, software engineering or data engineering or High School Diploma and 11+ years of experience 2+ years of hands-on python development experience within the last 3 yearsExperience with ETL, data transformation and data pipelinesExperience taking data collection requirements and translating those requirements into implementable solutionsExperience in the full Software Development Life Cycle to include debugging, testing, and deployment to different environmentsPreferred Qualifications:Experience with Database Management, SQL and/or PostgreSQLExperience with LinuxClearance Requirement:Must have a current/active TS/SCI w/PolygraphPhysical Requirements:Must be able to remain in stationary position at least 50% of the time

ManTech seeks a motivated, career and customer-oriented Senior Oracle Database Administrator to join our team in Chantilly , VAThe Senior Oracle Database Administrator will work as part of the overall DBA team to determine, implement, and maintain the most efficient ways to ingest, organize and store petabytes of data from disparate system.Responsibilities include but are not limited to:Participating in leading the design, development, and administration of Oracle 19c databasesDesigning and developing database code for ETL of data from multiple sourcesConducting performance tuning and forecasting system scalabilityRecommending appropriate procedure, query, or package changes and optimizations to ensure and improve system performance and reliabilityInstalling and configuring database environmentsas well as performing database backups and restoresManaging, monitoring, and administering of Oracle database systemsParticipating in server and storage capacity management, planning and providing technical support in the evaluation of database systems and database designMinimum Qualifications:High School Diploma with 7+ years of experience in the Information Technology fieldExperience with Oracle 19c+ architecture and database design, and related Oracle technologies (Partitioning, Encryption, Pluggable Database, etc.) on Linux systemsExperience with Oracle Exadata and PL/SQL developerOracle Label Security (OLS) experience coupled with experience and knowledge in methodologies to improve database query performance.Experience in the optimization of database environmentsUnderstanding of high-availability solutions, architecture, backup methodologies and their implementation (RMAN, Data Guard)Experience managing and tuning very large databases (terabytes and petabytes) and with automating, scripting, and streamlining processes for efficiency and accuracy with strong documentation skills.Preferred Qualifications:Experience with PostgreSQL architecture, database design, administration, and related technologies.Knowledge of Oracle Cloud TechnologyOracle OCP or OCM certification(s)Linux experience as relevant to database O&MKnowledge of multiple data-storage technologiesAbility to work with multiple teams to enhance their code and improve performance.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 the desks and in the server closet

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.

MANTECH seeks a motivated, career and customer-oriented Senior Software Engineer to join our team in Alexandria, VA. As part of the position, you will act as a Software Engineer designing and implementing services and components for AI applications.Responsibilities include but are not limited to:Develops, implements, and maintains full-stack software solutions for AI-enabled applications.Works closely with the Software Architect to understand project requirements and translate them into technical specifications.Develops and integrates AI and ML capabilities on a cloud-hosted data platform that supports significant market adoption, high performance, and strict access control and governance.Designs and builds prototype and proof of concept User Interfaces using modern UX/UI standards.Stays current with advancements in AI, machine learning, and software engineering, incorporating best practices into the development process.Performs system optimization, performance tuning and assists in capacity planning.Performs proactive analysis of potential issues, risks and roadblocks during system implementation and operations.Documents software designs, code, and processes to ensure maintainability, scalability, and knowledge sharing among team members.Participates in code reviews and provides constructive feedback to peers to ensure code quality, adherence to coding standards, and knowledge transfer within the team.Minimum Qualifications:Bachelor's degree in Computer Science, Information Technology, or a related field.10 or more years (7 with Master’s) of experience in software development, systems integration, data management, or related fields.Experience with configuring and developing in a major public cloud system such as Oracle, Azure, AWS, or GCP.Experience in programming and/or scripting languages such as JavaScript, Python, C++, or Java.Experience with software development frameworks and tools (e.g., TensorFlow, PyTorch, Flask, Docker).Strong understanding of software engineering principles, including design patterns, data structures, and algorithms.Experience with DevOps tools and techniques for building integrations with external systems including Infrastructure as Code (IaC). Example tools include Jenkins, GitLab, Ansible, Terraform, AWS Cloud Formation TemplatesPreferred Qualifications:Master's degree in Computer Science, Information Technology, or a related field.Strong analytical and problem-solving skills.Excellent communication and interpersonal skills.Experience working with data ingest and transformation.Ability to work effectively in a team-oriented environment.Clearance Requirements:Must possess a current and active TS/SCIPhysical 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.