ManTech

Network Engineer Location: Remote, Stafford, VA, USA Job Description: Requisition # R67342 Locations USA-Remote Work Security Clearance Required Top Secret Remote Type Fully Remote Time Type Full time Description & Requirements Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now—protect and innovate with MANTECH! MANTECH seeks a motivated, career and customer-oriented Network Engineer to join our team in Stafford, VA. This is a remote position. The successful candidate will be responsible for designing, configuring, testing, and implementing robust LAN/WAN solutions that allow enterprise applications to utilize the MCEN De-Militarized Zone (DMZ). The engineer will manage network traffic routing, support daily operations for both on-premises and cloud networks (AWS, Azure) and play a critical part in troubleshooting and resolving network connectivity issues. Responsibilities include but are not limited to: - Design and implement enterprise networking solutions using Cisco and Juniper hardware. - Manage and support daily operations of network traffic routing for on-premises and cloud environments. - Develop, update, and validate all network integration documentation. - Support troubleshooting activities for network connectivity issues reported by application owners. - Evaluate and apply DISA Security Technical Implementation Guides (STIGs) to all relevant network components. - Achieve and maintain all required Information Assurance (IA) certifications and training for privileged access to the MCEN. Minimum Qualifications: - Bachelor’s Degree with at least 4 years of related experience in cloud networking constructs in AWS and Azure that support the DoD Secure Cloud Computing Architecture (SCCA). An additional 4 years of experience may be substituted in lieu of degree. - Demonstrated proficiency with Cisco and Juniper network devices (routers, switches). - A Cisco Certified Network Associate (CCNA) or Juniper Networks Certified Internet Associate for JUNOS (JNCIA-JUNOS) certification is required. - DoDD 8140/8570 compliant/certified (e.g., current Security+ certification). Preferred Qualifications: - Current experience supporting Marine Corps Enterprise Networks - F5 Certified Technical Specialist certifications for ASM (Test 303), APM (Test 304), and LTM (Tests 301A/301B). Clearance Requirements: - An active DoD Top Secret with ability to obtain TS/SCI. 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. The projected compensation range for this position is $109,000.00-$181,500.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections. MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

Title: Junior Systems Administrator General information Requisition # R67752 Locations USA-Remote Work Posting Date 05/19/2026 Security Clearance Required Secret Remote Type Fully Remote Time Type Full time Description & Requirements Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now—protect and innovate with MANTECH! MANTECH seeks a motivated, career and customer-oriented Junior Systems Administrator to join our CASTLE-NET Program team. This is a remote position. Be a part of an agile team to provide innovative, customer focused, and cost-effective integrated enterprise IT support services in support of the client’s vision of engineering solutions for the Nation’s toughest challenges. Responsibilities include but are not limited to: - Contribute to the management and maintenance of the IT infrastructure, ensuring reliability, performance, and security across various systems including Windows, Linux, and VMware environments. - Involves the installation, configuration, maintenance, and support of servers and virtualized environments, working closely with IT teams, application developers, and stakeholders to develop configurations, troubleshoot issues, and ensure compliance with organizational policies and best practices. - Ensuring system security, performance, and availability, as well as maintaining comprehensive documentation of system configurations and procedures. - Deliver world-class IT services and responsive, dependable customer support. - Exceed the expectations of U.S. Army Corps of Engineers (USACE) OCIO/G-6 IT end-users. - Deliver vital solutions and strengthen the IT foundation with secure, innovative, and modernized technological solutions. Minimum Qualifications: - Requires a Bachelor's degree (or equivalent work experience) in Information Technology, Computer Science, or a related field. In lieu of Bachelor’s degree, Associate degree +2 years relevant experience, or 4 years relevant experience is acceptable. - 0+ years of experience position in systems administration for Windows, Linux, or VMware environments. - Possesses basic knowledge of relevant operating systems (e.g., Windows Server, Red Hat, CentOS) and virtualization technologies (e.g., VMware vSphere, ESXi). - Understanding of scripting languages (e.g., PowerShell, Bash, Python) and knowledge with system monitoring, patch management, and performance tuning. - Maintain relevant certifications (e.g., Microsoft Certified: Windows Server, RHCSA, RHCE, VMware Certified Professional - VCP). - Must maintain a 8140 IAT Lvl II certification. Preferred Qualifications: - Familiarity with the USACE IT environment, regulatory requirements, and data security best practices are preferred. Clearance Requirements: - Must possess a Secret security clearance prior to starting this position. Physical 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. The projected compensation range for this position is $59,100.00-$98,000.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections. MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation. If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.

Title: Application Systems Analyst Requisition # R67375 Locations USA-Remote Work Security Clearance Required Secret Remote Type Fully Remote Time Type Full time Job Description Description & Requirements Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now—protect and innovate with MANTECH! MANTECH seeks a motivated, career and customer-oriented Application Systems Analyst to join our team in Stafford, VA. This is a remote position The successful candidate will be responsible for the design, configuration, implementation, and migration of web applications on Marine Corps enterprise networks. Responsibilities include but are not limited to: - Lead the design and implementation of enterprise solutions for F5 BIG-IP technologies, including the Application Security Manager (ASM/WAF), Local Traffic Manager (LTM), and Access Policy Manager (APM). - Support Marine Corps Enterprise applications, develop and maintain comprehensive technical documentation, troubleshoot complex application delivery issues, and manage. - Design, configure, and test Web Application Firewalls (WAF), Single Sign-On (SSO), Common Access Card (CAC) authentication, reverse web proxy, and cipher suites. - Proficiency with Infrastructure as Code and maintaining GIT repositories. - Develop, update, and finalize all technical documentation for F5 solutions. Analyze log data and troubleshoot operational deficiencies and network connectivity problems for web applications. - Manage the acquisition, installation, and lifecycle of DoD PKI certificates. - Achieve and maintain all required Information Assurance (IA) certifications and training for privileged access to the MCEN. Minimum Qualifications: - Bachelor’s Degree with at least 5 years of related experience supporting Web applications or F5 BIG-IP Technologies. Additional 4 years of experience may be substituted in lieu of degree. - Proficiency with Infrastructure as Code and maintaining GIT repositories. - DoDD 8140/8570 compliant/certified (e.g., current Security+ certification). Preferred Qualifications: - Current experience supporting Marine Corps Enterprise Networks - F5 Certified Technical Specialist certifications for ASM (Test 303), APM (Test 304), and LTM (Tests 301A/301B). Clearance Requirements: - An active DoD Secret clearance is required for this position. 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. The projected compensation range for this position is $98,000.00-$163,100.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections. MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

Title: Senior Aviation Systems Engineer Location:USA-Remote Work Requisition # R67792 Job Description: Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now—protect and innovate with MANTECH! MANTECH seeks a motivated, career and customer-oriented Senior Aviation Systems Engineer to join our team working remotely. This is a remote position. Responsibilities include but are not limited to: - Provide overall assistance with the coordination of the Future Carriers Aviation EDT supporting Naval Aviation-related systems integration for current and future carrier programs in accordance with the DoW acquisition process. - Assists with the integration of aviation requirements in aircraft carrier design and integrated logistics development. - Supports coordinating with aviation leads to the Carrier Integration Working Group (CIWG) in accordance with the 8-Way MOA regarding aviation and PARM requirements for warfare system design - Supports the following functional areas: Aircraft movement, parking, turnaround, and servicing; Aviation fuel storage, movement and handling; Aviation weapons storage, movement and handling; Aircraft firefighting; Aircraft maintenance; Aviation supply, manpower, and training; Aviation HIS and safety; and Air Wing of the Future. - Coordinate with NAVAIR and NAVSEA Engineering Agents and Technical Authorities, TYCOM, PMS 312, PMS 378, SUPSHIP, Newport News Shipbuilding, & other activities Minimum Qualifications: - Bachelor’s of Science degree in any discipline - 15+ years of experience with Military aircraft - Experience with USN aircraft carriers or large deck amphibious ships with experience in Flight Deck and Hangar Bay operation, aircraft maintenance, and launch and recovery systems Clearance Requirements: - Must be a U.S. Citizen and possess a current or active Top Secret with SCI eligibility. Physical 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. The projected compensation range for this position is $116,400.00-$194,900.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.

Network Engineer Requisition # R67343 Locations USA-Remote Work Security Clearance Required Secret Remote Type Fully Remote Time Type Full time Job Description: Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now—protect and innovate with MANTECH! MANTECH seeks a motivated, career and customer-oriented Network Engineer to join our team in Stafford, VA. This is a remote position. The successful candidate will be responsible for designing, configuring, testing, and implementing robust LAN/WAN solutions that allow enterprise applications to utilize the MCEN De-Militarized Zone (DMZ). The engineer will manage network traffic routing, support daily operations for both on-premises and cloud networks (AWS, Azure) and play a critical part in troubleshooting and resolving network connectivity issues. Responsibilities include but are not limited to: - Design and implement enterprise networking solutions using Cisco and Juniper hardware. - Manage and support daily operations of network traffic routing for on-premises and cloud environments. - Develop, update, and validate all network integration documentation. - Support troubleshooting activities for network connectivity issues reported by application owners. - Evaluate and apply DISA Security Technical Implementation Guides (STIGs) to all relevant network components. - Achieve and maintain all required Information Assurance (IA) certifications and training for privileged access to the MCEN. Minimum Qualifications: - Bachelor’s Degree with at least 4 years of related experience in cloud networking constructs in AWS and Azure that support the DoD Secure Cloud Computing Architecture (SCCA). An additional 4 years of experience may be substituted in lieu of degree. - Demonstrated proficiency with Cisco and Juniper network devices (routers, switches). - A Cisco Certified Network Associate (CCNA) or Juniper Networks Certified Internet Associate for JUNOS (JNCIA-JUNOS) certification is required. - DoDD 8140/8570 compliant/certified (e.g., current Security+ certification). Preferred Qualifications: - Current experience supporting Marine Corps Enterprise Networks - F5 Certified Technical Specialist certifications for ASM (Test 303), APM (Test 304), and LTM (Tests 301A/301B). Clearance Requirements: - An active DoD Secret clearance is required for this position. 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. The projected compensation range for this position is $109,000.00-$181,500.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections. MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

Title: Cloud Engineer - VMWare Location: USA Job Description: Requisition # R67728 Locations USA-Remote Work Posting Date 05/13/2026 Security Clearance Required Secret Remote Type Fully Remote Time Type Full time Description & Requirements Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now—protect and innovate with MANTECH! MANTECH seeks a motivated, career and customer-oriented Senior VMWare Cloud Engineer to join our CASTLE-NET Program team. This is a remote position. Be a part of an agile team to provide the U.S Army Corps of Engineers (USACE) OCIO/G-6 with agile, innovative, customer focused, and cost-effective integrated enterprise IT support services in support of the USACE vision of engineering solutions for the Nation’s toughest challenges. Responsibilities include but are not limited to: - Designing, implementing, and managing cloud-based computing solutions and infrastructure for CASTLE-NET projects - Ensuring high availability, reliability, optimized performance, and robust security of cloud-based applications. - Focuses on vSphere, NSX, vSAN, and vRealize Suite to manage virtualized environments. - Managing VMware Cloud Foundation, Private Cloud to Public Cloud migration, and hybrid cloud networking (HCX). - Collaborate with project teams, stakeholders, and IT leadership for seamless integration and alignment with objectives. - Deliver world-class IT services and responsive, dependable customer support. - Exceed the expectations of U.S. Army Corps of Engineers (USACE) OCIO/G-6 IT end-users. - Deliver vital solutions and strengthen the IT foundation with secure, innovative, and modernized technological solutions. Minimum Qualifications: - Requires a Bachelor's degree (or equivalent work experience) in Computer Science, IT, Engineering, or related field and 8 or more years of cloud engineering experience with platforms like AWS, Azure, or Google Cloud. In lieu of Bachelor’s degree, Associate degree +2 years relevant experience, or 4 years relevant experience is acceptable. - Possesses excellent understanding of cloud infrastructure components, scripting and automation (Python, PowerShell, Bash), and IaC tools (Terraform, CloudFormation). - Requires strong problem-solving, communication, and collaboration skills. - Possess relevant certifications (Preferred: VCP-Cloud Management and Automation (VCP-CMA), VCP-DCV. Minimum Acceptable certifications: AWS Solutions Architect, Azure Solutions Architect Expert, Google Cloud Professional Architect) - Possesses experience with Docker or Kubernetes. Preferred Qualifications: - Familiarity with USACE or other federal agency cloud infrastructures and policies - Demonstrates excellent troubleshooting, problem-solving, communication, and teamwork skills, the ability to manage multiple tasks effectively, and maintains currency with industry trends and best practices. - Have strong problem-solving and analytical skills and communicate effectively with technical and non-technical stakeholders. Clearance Requirements: - Must be a US Citizen and possess a Secret security clearance prior to starting this position. Physical 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. The projected compensation range for this position is $117,000.00-$195,100.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections. MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

Title: Cyber Security Engineer Job Description: Requisition # R67366 Locations USA-Remote Work Security Clearance Required Secret Remote Type Fully Remote Time Type Full time Description & Requirements Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now—protect and innovate with MANTECH! MANTECH seeks a motivated, career and customer-oriented Cyber Security Engineer to join our team in Stafford, VA. This position is remote. The successful candidate will be responsible for providing technical expertise in designing and implementing security solutions across on-premises data centers and cloud environments (AWS, Azure), with a strong focus on F5 Web Application Firewall (WAF) and the DoD Secure Cloud Computing Architecture (SCCA). The role involves ensuring compliance with DoD security standards by evaluating DISA STIGs, managing system vulnerabilities through IAVMs, and hardening the overall cybersecurity posture Marine Corps enterprise networks. Responsibilities include but are not limited to: - Evaluate and implement security requirements from DISA STIGs for F5, cloud, and network environments. - Manage F5 system patching and version upgrades to comply with IAVM notices. - Design, configure, and test security solutions, including F5 WAF/ASM policies and cloud-based DMZs. - Ensure all systems, software, and configuration changes adhere to DoD/DON cybersecurity directives. - Support all Cybersecurity Workforce (CSWF) reporting and maintain required IA certifications. - Achieve and maintain all required Information Assurance (IA) certifications and training for privileged access to the MCEN Minimum Qualifications: - Bachelor’s Degree with at least 4 years of related experience in cloud architectures that conform to the DoD SCCA, including Virtual Data Center Security Stacks (VDSS). An additional 4 years of experience may be substituted in lieu of degree. - Contribute to and maintain required cloud certifications, which include advanced (e.g., AWS/Azure Architect Professional/Expert), intermediate (e.g., AWS/Azure Architect Associate), and foundational levels. - Experience implementing and managing security controls for F5 Big-IP modules (ASM, APM, LTM). - DoDD 8140/8570 compliant/certified (e.g., current Security+ certification) Preferred Qualifications: - Current experience supporting Marine Corps Enterprise Networks - F5 Certified Technical Specialist certifications for ASM (Test 303), APM (Test 304), and LTM (Tests 301A/301B). Clearance Requirements: - An active DoD Secret clearance is required for this position. 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. The projected compensation range for this position is $104,200.00-$172,900.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections. MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation. If you need a reasonable accommodation to apply for a position with MANTECH, please email us and provide your name and contact information.

Title: Java Developer Location: US Job Description: Requisition #: R67541 Locations: USA-Remote Work Security Clearance Required: Secret Remote Type: Fully Remote Time Type: Full time Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now—protect and innovate with MANTECH! MANTECH seeks a motivated, career and customer-oriented Java Developer to join our team. This is a remote position. Responsibilities include but are not limited to: - Design and implement scalable, secure microservices using Java and frameworks such as Spring Boot, Quarkus, Micronaut, or MicroProfile. Implement unit and integration tests using modern testing frameworks (JUnit, Mockito, Testcontainers, etc.). - Develop and maintain RESTful APIs and backend services in compliance with government performance and security standards. - Integrate services with Oracle, PostgreSQL or other relational databases. - Participate in cloud-first solution design, leveraging platforms like AWS GovCloud. - Contribute to DevSecOps pipelines with CI/CD tools like GitLab. - Collaborate with DevOps, Security, and Infrastructure teams to ensure compliance with DISA STIG, RMF, and other DoD/DHA security mandates. - Support system documentation, security accreditation processes, and technical artifacts required for ATOs. Minimum Qualifications: - 4+ years of hands-on Java development experience with the following technologies: - Experience with Linux and Java Web Containers (e.g., Jboss, Tomcat) - Spring Boot, Quarkus, Micronaut, or Eclipse MicroProfile - JPA/Hibernate, JDBC, and SQL (Oracle, PostgreSQL or similar) - RESTful service design and implementation - JSON, Swagger/OpenAPI, and REST standards - Working knowledge of Git and CI/CD tools like GitLab. - Ability to interpret technical requirements and deliver scalable solutions. Preferred Qualifications: - Bachelor’s degree in computer science, Information Systems, Engineering, or related field. - Prior experience supporting Department of Defense (DoD), DHA, or other federal healthcare systems. - Proficiency in diverse operating system environments, including Windows and various Linux distributions (e.g., Alpine, Red Hat, and Ubuntu). - Proficient in scripting languages, including Python, JavaScript, and Bash. - Experienced with container technologies such as Docker, Kubernetes, and Helm. Clearance Requirements: - Must have a current/active secret security clearance. Physical Requirements: - Must be able to be in a stationary position more than 50% of the time - Constantly operates a computer and other office productivity machinery, such as a computer - The person in this position frequently communicates with co-workers, management and clients, which may involve delivering presentations and must be able to exchange accurate information in these situations - The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc. The projected compensation range for this position is $94,800.00-$157,200.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections. MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

Title: Senior OneStream Solution Architect Location: USA Requisition # R67534 Locations USA-Remote Work Security Clearance Required None Remote Type Fully Remote Time Type Full time Description & Requirements Elevate your career with MANTECH International Corporation! Join a dynamic team dedicated to national security through cutting-edge technology. Since 1968, MANTECH has led in delivering advanced solutions to government intelligence, the Department of Defense, and Federal Civilian sectors. Dive into innovation in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Your journey to impactful work and rapid growth starts now—be extraordinary at MANTECH! MANTECH seeks a motivated, career and customer-oriented Senior OneStream Architect to join our team. This is a remote position. At MANTECH we are re-engineering the financial backbone of the U.S. Government. We provide highly configured, mission-critical Planning, Programming, Budgeting, and Execution (PPBE) and Financial Close and Reporting solutions leveraging the OneStream platform. As a Senior OneStream Architect, you will serve as a technical lead and subject matter expert for our most complex implementations. You will work as the Lead Architect—designing entire applications, complete solutions, translating functional requirements into technical blueprints, and guiding a team of Lead Consultants and Associate Consultants to deliver high-performance solutions. You will own the technical quality of the application, ensuring performant business rules, streamlined security, and scalable data models. Responsibilities include but are not limited to: - Applying advanced theoretical knowledge of Computer Science and Engineering principles to proficiently develop, write, test, troubleshoot, and document code and interfaces for financial management applications using the OneStream XF platform - Developing and troubleshooting a variety of components including, but not limited to metadata, workflows, security models, event processes, custom dashboards, reports, business rules, member formulas, relational database solutions, and all methods of data integration, conversion and migration artifacts, with a focus on enhancing system functionality and efficiency - Actively participating in all phases of the software development cycle (specifically full-scale OneStream platforms), ranging from systems analysis and design to development, configuration, testing, debugging, performance tuning, risk identification/remediation, and documentation to ensure the delivery of high-quality software solutions in a timely manner - Working in an agile environment, applying agile practices, and actively participating in daily stand-ups and scrum activities to foster collaborative and efficient project management - Continually expanding your knowledge of OneStream through comprehensive training, financial processes, and industry best practices, to stay abreast of the latest trends and enhance your professional growth - Interviewing, hiring, developing, and training other OneStream consultants to advance their skill sets and capabilities enabling career advancement - Contributing to solution design and development of “products” that are positioned to clients to meet their requirements and presenting these solutions both internally and externally - Identifying, developing, and supporting opportunities for new contracts/clients and on contract growth at existing clients including participation in providing technical content, past performances, and level of effort estimates for RFIs, RFQs, and RFPs - Experience leading with a Consulting Mindset: listening carefully to what others need (client and team members) and being willing and ready to respond to those needs to the best of your ability; looking beyond the “easy” answer working collaboratively to bring the best Mantech has to offer to exceed others’ expectations. Minimum Qualifications: - A bachelor’s degree in computer science, Systems Engineering, or Information Systems or related field - 10+ years of work experience in systems design, infrastructure, tuning/optimization, cloud, development, and deployment - OneStream Certified Professional (OCP) - 5+ years of relevant OneStream experience or comparable experience performing software development, demonstrating a track record of successful project delivery - 4+ years of OneStream XF installation, configuration, and optimization experience - Proficient with C# and/or VB.NET, to handle technical requirements of the role - SQL experience with SQL Server or Oracle databases, to manage and manipulate data effectively Preferred Qualifications: - Master’s degree in computer science, engineering, or information systems - Experience creating software solutions for federal Planning, Programming, Budgeting, and Execution (PPBE) or financial management processes within the government sector utilizing Agile project methodologies, including defining Stories and estimating Story Points - VB.NET development experience and/or any object-oriented programming languages - Experience assisting with ATOs and setting up Single Sign-On for applications - Work experience in a professional services company and/or a consulting firm including 5+ years of experience providing formal mentorship and managing the technical output of more junior consultants - Additional and relevant certifications: Certified Government Financial Manager (CGFM), Certified Defense Financial Manager (CDFM), and/or CompTIA Security+ certification Clearance Requirements: - US Citizenship with the ability to obtain a Public Trust or higher Physical Requirements: - Must be able to remain in a stationary position 50% - Frequently communicates with co-workers, management, and customers, which may involve delivering presentations - Must be able to exchange accurate information in these situations The projected compensation range for this position is $189,200.00-$346,400.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections. MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

Title: Test Engineer Requisition # R67390 Locations USA-MD-Columbia Security Clearance Required TS/SCI w/ Poly Remote Type Hybrid Time Type Full time Job Description: Description & Requirements Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH! MANTECH seeks a motivated, career and customer-oriented Test Engineer to join our team in Columbia, MD. This position offers a hybrid-remote work schedule, balancing onsite collaboration with remote flexibility. In this role, you will conduct test data collection and analysis, while reporting status and results to key stakeholders. You will support the development of critical Government documentation, including Test and Evaluation (T&E) Strategies, Master Plans, Readiness Assessments, and Reports. Additionally, you will collaborate with partner organizations to ensure program integration and provide specialized Test and Evaluation (T&E) capabilities tailored to system functions and Statement of Work (SOW) requirements. Responsibilities include but are not limited to: - Produce associated Test Plans, Procedures, Reports, Briefings, and Data Management Plans. - Conduct research into and apply knowledge of Government test and evaluation concepts to support all related engineering acquisition and operations activities. - Specify, validate, and adapt Modeling and Simulation for Test and Evaluation (T&E) use. - Plan and execute data collection for test procedures and test cases. - Assess operational and system performance requirements for testability and criticality to frame and prioritize Test and Evaluation (T&E) objectives. - Coordinate with developers to leverage functional analysis, system descriptions, parameter selection, and dependencies. - Provide overall leadership of the Test and Evaluation (T&E) task and serve as primary liaison to the government for supporting contract coordination and task execution. Minimum Qualifications: - Bachelor's degree in Math, Science, Engineering, Statistics, or Engineering Management; an additional 4 years of Test Engineer experience may be substituted for a degree. - 8+ years' experience as a Test Engineer in programs and contracts of similar scope, type, and complexity. - Experience with web automation test tools and frameworks, including: TestNG, Selenium, or Cypress Testing Automation Software. Preferred Qualifications: - Proficiency with Mongo DB, including writing queries in JSON. - Experience writing queries in SQL. - Experience with User Interface testing against requirements and testing for accessibility. - Experience with JavaScript and Java development languages. Clearance Requirements: - Active TS/SCI with Polygraph. Physical 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. The projected compensation range for this position is $128,000.00-$214,400.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections. MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.