Senior Systems Engineer

Validatek; Arlington (VA); Hybrid; USD 140,000 - 180,000; Full time

Job summary

ValidaTek in Arlington, VA is seeking a Senior Systems Engineer to design, implement, administer, and maintain complex enterprise systems and infrastructure in a DoD environment.

The role focuses on Windows Server, AD, virtualization, storage, and security controls, aligning with DoD STIGs and risk management. Hybrid work arrangement with potential travel and strong collaboration across engineering teams.

Qualifications

• Bachelor's degree or equivalent experience.
• 7+ years of experience in systems engineering, systems administration, or related IT infrastructure.
• Experience supporting Windows Server and Microsoft enterprise environments.
• Experience with networking, virtualization, and enterprise infrastructure technologies.
• Knowledge of DoD cybersecurity requirements and security best practices.
• Experience troubleshooting complex infrastructure issues in an enterprise environment.
• Strong communication, documentation, and problem-solving skills.

Responsibilities

• Design, implement, configure, and maintain enterprise systems and infrastructure.
• Administer and troubleshoot Windows Server and Microsoft environments, including Active Directory, DNS, DHCP, WSUS, and SCCM/MECM.
• Support enterprise network, virtualization, and storage environments.
• Troubleshoot complex systems and infrastructure issues and provide effective solutions.
• Develop and maintain system documentation, technical procedures, and network diagrams.
• Monitor system performance, availability, and infrastructure health.
• Implement and maintain security controls and DoD security requirements, including STIGs and vulnerability management.
• Support infrastructure upgrades, migrations, installations, and technology refresh initiatives.
• Participate in disaster recovery, business continuity, and system implementation activities.
• Collaborate with engineers, project teams, and stakeholders to support mission requirements.

Skills

Windows Server

Active Directory

DNS

DHCP

WSUS/MECM

SCCM/MECM

Networking

Virtualization

DoD cybersecurity

Documentation

Education

Bachelor's degree

Tools

VMware

Cisco networking

SAN

ACAS

HBSS

DoD STIGs

Job description

If you are a job seeker with a disability and require a reasonable accommodation to apply for one of our jobs, you will find the contact information to request the appropriate accommodation by visiting the following our Accessibility Accomodation for Applicants page.

• Posted on August 12, 2026

Locations

Showing 1 location

VA - Crystal GW JSP
JSP ED-E
Arlington, VA 22202, USA

• Hybrid
• Pay or shift range: $140,000 USD to $180,000 USD
  Actual salary will be based on a variety of factors including but not limited to experience, geographic location, contract affordability, internal equity, education, and certifications.The upper end of the salary range may be reserved for individuals who have demonstrated tenure with the company, seniority, and proven excellent performance. This includes factors such as education, certifications, and extensive/unique experience beyond what is required.
• Information Systems
• Full-Time
• Requisition #: SENIO001944

Description

Company Overview:

At ValidaTek, we modernize and optimize IT services to solve some of the most critical challenges facing federal civilian and defense agencies. From customers to partners to top-talent employees, ValidaTek puts people first, empowering them to exceed expectations and transform government organizations. Our employees are building purpose-driven careers, not just filling jobs. We bring together people with many different perspectives, experiences, and talents to drive innovation and achieve more together than we can individually.Our commitment to quality and performance optimization is the reason why our IT Service Projects and New Development Projects have been appraised at CMMI Maturity Level 5, positioning us as one of a handful of elite companies to receive the highest form of third-party validation. www.validatek.com

Summary:

We are seeking a highly skilled Senior Systems Engineer to support the design, implementation, administration, and maintenance of complex enterprise systems and infrastructure. The Senior Systems Engineer will work closely with engineering and project teams to ensure reliable, secure, and effective IT operations in a DoD environment.

Responsibilities:

• Design, implement, configure, and maintain enterprise systems and infrastructure.
• Administer and troubleshoot Windows Server and Microsoft environments, including Active Directory, DNS, DHCP, WSUS, and SCCM/MECM.
• Support enterprise network, virtualization, and storage environments.
• Troubleshoot complex systems and infrastructure issues and provide effective solutions.
• Develop and maintain system documentation, technical procedures, and network diagrams.
• Monitor system performance, availability, and infrastructure health.
• Implement and maintain security controls and DoD security requirements, including STIGs and vulnerability management.
• Support infrastructure upgrades, migrations, installations, and technology refresh initiatives.
• Participate in disaster recovery, business continuity, and system implementation activities.
• Collaborate with engineers, project teams, and stakeholders to support mission requirements.

Qualifications:

• Bachelor's degree in a related technical field or equivalent relevant experience.
• 7+ years of experience in systems engineering, systems administration, or related IT infrastructure.
• Experience supporting Windows Server and Microsoft enterprise environments.
• Experience with networking, virtualization, and enterprise infrastructure technologies.
• Knowledge of DoD cybersecurity requirements and security best practices.
• Experience troubleshooting complex infrastructure issues in an enterprise environment.
• Strong communication, documentation, and problem-solving skills.

Preferred Qualifications:

• Experience supporting DoD or federal government environments.
• Experience with VMware, Cisco networking, SAN, ACAS, HBSS, and DoD STIGs.
• Relevant industry certifications such as Security+, Microsoft, VMware, or Cisco.

Salary Disclosure:

Actual salary will be based on a variety of factors including but not limited to experience, geographic location, contract affordability, internal equity, education, and certifications. The upper end of the salary range may be reserved for individuals who have demonstrated tenure with the company, seniority, and proven excellent performance. This includes factors such as education, certifications, and extensive/unique experience beyond what is required.

EEO Statement:

ValidaTek is an Equal Opportunity Employer. All qualified applicants will be considered without regard to disability, protected veteran status, or any other status protected by federal, state, or local laws. Applicants who are selected for employment will be required to verify authorization to work in the United States. Offers of employment will be contingent upon passing a post-offer background check.

Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities
This employer is required to notify all applicants of their rights pursuant to federal employment laws.For further information, please review the Know Your Rights notice from the Department of Labor.