Mid-Level to Senior Systems Administrator

National Security & Defense At Jacobs, we're challenging today to reinvent tomorrow by solving the world's most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good.

Your impact

Knack Works, a Jacobs Company, is seeking a qualified and highly motivated Mid-Level to Senior Systems Administrator to support the design, implementation and maintenance of our infrastructure in the Chantilly, VA office. The role is ideal for someone with hands-on experience managing, configuring, and maintaining computer systems, servers, networks and IT infrastructure to ensure high availability, security and reliable operation.

Duties/Task and Responsibilities

• Proficient with Windows systems

• Manage complex Active Directory environments, focusing on cross-domain trust relationships, Global Catalog replication, and centralized Group Policy Management

• Manage systems hardware and software infrastructure for both on-prem and in the cloud

• Provide hardware and software support for users, customers and personnel

• Collaborate with a team of engineers to design, implement and test features and functionality to support Knack Works’ high performance computing products

• Support the development of system documentation

• Develop and define techniques and tools to support the most efficient solution to meet program needs

• Maintain and provide technical expertise in all areas of hardware, software and networking

• Ability to troubleshoot systems, performance, and security issues

• Perform hardware and software installation, cabling coordination, and basic networking

• Follow change management and implementation best practices

• Collaborate with systems, security, and support teams as needed

• Scripting experience (e.g., Powershell, C#, C++, XML, JSON, etc.)

Here's what you'll need

•5 - 10 years of hands-on Windows Server OS system administration experience

• Bachelor’s degree in Computer Science, Engineering or related field

Solid understanding of:

• Windows OS

• Experience with installation and implementation of hardware, software and networking equipment

• Familiarity with common hardware vendors (e.g., HP, Dell, etc.) and cloud providers (e.g. AWS, Azure, etc.)

• Ability to create and maintain clear technical documentation

• Strong troubleshooting, problem-solving and analytical skills

• Good communication and collaborations skills with the ability to work in a team environment

• Experience with LAN/WAN operations and protocols

• Experience working in development and operational environments

• A current active TS with SCI eligibility and willingness to take a polygraph exam

• Ability to obtain a CompTIA Security+ CE certification within the first 6 months of employment

Desired Requirements:

• VMware vSphere configuration and maintenance experience

• A current TS/SCI with Poly

• A valid CompTIA Security+ CE certification

• Experience with:

• System monitoring tools

• Linux OS

• Exposure to cloud networking (AWS, Azure or similar)

• Experience working in an enterprise or multi-site environments

Posted Salary Range: Minimum

130,000.00

Posted Salary Range: Upper

180,000.00

Our health and welfare benefits are designed to invest in you, and in the things you care about. Your health. Your well-being. Your security. Your future. Employees have access to medical, dental, vision, and basic life insurance, a 401(k) plan, paid time off, and Profit-Sharing Plan (PSP) which includes both PSP contributions and an optional 401(k) plan (available immediately (i.e., no deferment or wait period), and the ability to purchase company stock at a discount. Eligible employees may also enroll in a deferred compensation plan or the Executive Deferral Plan. And certain roles may be eligible for additional rewards, including merit increases, performance discretionary bonus, and stock.

The base salary range for this position is $130,000.00 to $180,000.00. Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education or training.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status. Job posted on April 20, 2026. This position will be open for at least 3 days.

Onsite employees are expected to attend a Jacobs Workplace on a full-time basis, as required by the nature of their role.

Your application experience is important to us, and we’re keen to adapt to make every interaction even better. If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team via Careers Support .

Locations

City State Country
Chantilly	Virginia	United States