ManTech seeks a motivated, career and customer-orientedTelephony Engineer to join our team inMcLean, VA. In this role, you will apply your expertise in various telecommunications and IT domains, including Linux, Korn shell scripting, PowerBuilder, BESS billing, and Telephony Provisioning Tools. Your responsibilities will include designing, developing, and maintaining voice media gateways that integrate seamlessly with telephony infrastructure.Responsibilities include, but are not limited to:Install, maintain, and analyze software, hardware, and transmission systems for voice communications.Ensure proper installation and support procedures for remote hardware and communication facilities.Collaborate with customers and vendors to define voice communication system requirements.Integrate telephony systems (VoIP, analog, ISDN) with voice media gateways and service modules.Manage and configure Linux servers (Ubuntu, CentOS) for hosting applications, ensuring performance, security, and stability.Utilize BESS Billing and Telephony Provisioning Tools to support telephony systems.Develop, test, and troubleshoot applications on Linux-based servers, including PowerBuilder and Korn shell scripts, while optimizing system performance.Minimum Qualifications: BA/BS and 9+ years of experience, or a combination of education and work experience equivalent to 13+ years.Strong experience with telephony systems (VoIP, analog, ISDN) and voice media gateway integration.Proficiency in Linux server management (Ubuntu, CentOS) and scripting languages (Korn shell, PowerBuilder).Experience with BESS Billing and Telephony Provisioning Tools.Excellent troubleshooting, problem-solving, and analytical skills with the ability to work independently.Preferred Qualifications:Experience integrating telephony systems with web applications (e.g., handling inbound/outbound calls, IVR, call routing).Knowledge of security best practices for telephony, server administration, and web applications.Knowledge and hands on experience with telephony systems and Linux server management, including installation, configuration, troubleshooting, and performance optimization.Qualified in Oracle Database Administrator.Experience provisioning telephony services.Clearance Requirements:Must have a current/active TS/SCI with Polygraph.Physical Requirements:Must be able to remain in a stationary position at least 50% of the time. Constantly operate a computer, phone, and other office equipment for extended periods of time.

ManTech seeks a motivated, career and customer-oriented Cloud Security Engineer to join our team in Herndon, VA.Join a team of cybersecurity experts that protects and defends the largest target in the world. As a Cloud Security Engineer on our team, you will utilize the latest tools available and assist in creating new ones while allowing you to advance the nation's information security posture.Responsibilities include but are not limited to: Design and champion the strategy for detecting and responding to cyber incidents within Oracle Cloud Infrastructure (OCI) or Google Cloud Platform (GCP)Create advanced detection rules and tradecraft to uncover sophisticated cloud-based attacksOptimize data pipelines to fuel rapid incident analysis and proactive threat hunting in the cloudServe as the Subject Matter Expert (SME) during critical cloud security incidents, guiding the CSOC team to swift resolutionContinuously evaluate emerging cloud security tools and techniques to enhance our defenses and response capabilitiesPartner with cross-functional teams and mentor less experienced analysts to build a stronger cloud security posture across the organizationMinimum Qualifications:High School Diploma and 15+ years of experience in cloud or cyber security or Bachelor’s degree and 11+ years of experience5+ years of experience in cyber incident response3+ years’ experience architecting, engineering, implementing, or securing solutions within Google Cloud Platform (GCP) OR Oracle Cloud Infrastructure (OCI)2+ years’ experience with data ingestion, processing, and analysis of data relevant to security investigations, such as log management, basic ETL concepts or similar.Experience with at least one scripting language, such as Python or Bash, for task automation or security analysisExperience with cloud security principles, including identity and access management, network security, and data protection within the chosen platform (GCP or OCI)Preferred Qualifications: Degree in Computer Science, Information Security, or a related technical fieldRelevant Certifications such as CISSP, CCSP, CCSK, GCFA, GCIH, or cloud-specific security certifications (e.g., Google Cloud Security Engineer, Oracle Cloud Security Architect)Experience in security services and best practices within either Google Cloud Platform (GCP Security Command Center, Chronicle, IAM, Networking) OR Oracle Cloud Infrastructure (OCI Cloud Guard, Security Zones, IAM, Networking)Experience leading and coordinating complex cloud security incident investigations, including forensic analysis and containment strategiesAbility to develop and implement automation scripts and workflows (e.g., Python, Cloud Functions/Lambdas, SOAR platforms) to enhance incident response efficiencyClearance Requirements: Must have a current/active TS/SCI w/PolygraphPhysical Requirements: The person in this position must be able to remain in a stationary position 50% of the time.

ManTechseeks a motivated, career and customer-orientedTechnical Lead – Network Engineering to join our team inHerndon, VA. In this role, you will be responsible for overseeing the technical direction of engineering projects and ensuring the successful execution of initiatives. This role involves mentoring team members, coordinating with other departments, and maintaining high standards of quality and efficiency in engineering practices.Responsibilities include, but are not limited to: Lead and mentor a team of Network Engineers, System Integration and Testing (LANSIT) Techs, Capacity & Planning Techs and Circuit Design and Documentation (CD&D) Techs providing technical guidance and support, as well as hands-on support to assist with projects with coverage from 6:00 a.m. – 6:00 p.m. Supporting 24x7 operations and shift work may be required.Design, develop, and implement technical solutions in line with project requirements and organizational goals.Assist to plan, design, install, maintain, monitor, analyze, troubleshoot, modify, and support network communications systems to provide maximum performance and availability.Assist to plan, design, implement, and support local and wide area networks (LANs/WANs) in the areas of Internet connectivity, capacity planning, routing, switching, server load balancing, network security, and wireless.Performing HR duties as assigned, including but not limited to: interviewing, hiring, career enablement, performance counseling, compensation planning, and requisition creation.Lending expertise and institutional knowledge to improve the overall excellence of the team by supporting the creation of Knowledge Articles, Work Instructions and SOPs.Local travel may be required between customer buildings or temporary assignment to an alternate location in support of special projects.Minimum Qualifications: Bachelor's degree and 7+ years of experience, or a combination of education and work experience equivalent to 11+ years. 6+ of those years having direct knowledge of the customer’s operational environment, including (but not limited to) network engineering design, delivery and management.Demonstrated ability managing teams with a diverse range of skillsets in direct support to customer.Proven ability to build and maintain constructive relationships among customers, stakeholders, technical teams, and contractors across the customer base.Ability to understand and discuss project statuses across the team and offer solutions to any issues.Preferred Qualifications: Familiarity with Agile methodologies and project management principles.Relevant certifications in technical (Cisco) and managerial skills are a plus.Strong expertise in relevant programming languages, frameworks, and tools.Strong communication skills due to variety of groups to be working with, such as co-workers, management, and customers; must be able to exchange accurate information. Ability to adapt to quickly changing tasks and requirements and the ability to quickly learn new skills while on the job.Clearance Requirements:Must have a current/active TS/SCI with Polygraph.Physical Requirements:Must be able to remain in a stationary position at least 50% of the time. Constantly operate a computer, phone, and other office equipment for extended periods of time.Must be able to move/traverse within and between buildings and offices, position self to maintain equipment and cabling, including under the desks, while moving floor tiles, and in server closets, some of which may be confined spaces.Must be able to move Audio/Visual or Computer equipment weighing 50+ pounds, some equipment may require team-lift or the use of carts. Ascends/descends a ladder, 10+ feet high while pulling cables and adjusting equipment.