About this role.
ManTech seeks a Senior VMWare Cloud Engineer for the CASTLE-NET Program supporting the U.S. Army Corps of Engineers. This fully remote role requires designing and managing cloud solutions using VMware technologies like vSphere, NSX, and vSAN. Candidates need 8+ years of experience, a relevant degree, and certifications such as VCP or AWS Solutions Architect. A Secret security clearance is required. The position offers a competitive salary range of $117,000 to $195,100 annually.
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Cover letter sample
Dear Hiring Manager,
I am writing to express my strong interest in the Senior VMWare Cloud Engineer position at ManTech. With over 8 years of experience in cloud engineering and a deep expertise in VMware technologies including vSphere, NSX, and vSAN, I am confident in my ability to contribute to the CASTLE-NET Program. My background includes designing and managing hybrid cloud environments, automating infrastructure with Terraform and Python, and ensuring high availability and security for mission-critical systems.
I hold a Secret security clearance and relevant certifications such as VCP-CMA and AWS Solutions Architect. I am excited about the opportunity to support the U.S. Army Corps of Engineers and deliver innovative IT solutions. Thank you for considering my application.
Sincerely, [Your Name]
Sample interview questions
I have 8+ years managing vSphere clusters, implementing HA, DRS, and FT to ensure uptime. For example, I configured a 4-node cluster with vSAN storage, enabling automatic failover and load balancing, achieving 99.99% availability.
I would assess the current environment, plan the migration strategy (bulk or lift-and-shift), set up HCX connectors, and test network extensions. I would then migrate workloads in phases, monitoring performance and rollback plans.
NSX provides micro-segmentation and distributed firewalls. I have used it to create security policies isolating application tiers, reducing attack surface. For instance, I implemented zero-trust zones for a multi-tenant cloud.
I have used Terraform to automate provisioning of VMware resources like VMs and networks. For example, I wrote modules to deploy consistent environments across vSphere and AWS, reducing deployment time by 60%.
I regularly attend VMware conferences, earn certifications, and follow NIST guidelines. In my previous role, I ensured systems met FedRAMP requirements by implementing continuous monitoring and automated compliance checks.
General information
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.
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.
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