System One

Manage and support Windows Server environments including Active Directory, DNS, certificate authorities, scripting, and security hardening. | 8+ years systems engineering with expertise in Active Directory, Windows OS support, certificate management, and scripting. | Job Title: Senior Windows Server Systems Administrator Location: Washington, DC Type: Contract Compensation: $40 - $65 per hour Work Model: Remote – offsite Hours: 40.0 hours per week Security Clearance: U.S. Citizenship required and current - ATF (Bureau of Alcohol, Tobacco, Firearms and Explosives) Public Trust preferred Overview • *This Senior Windows Server Systems Administrator can work fully remote but must be in the DC Metro area in case the team needs to meet in person. This is likely to be a contract-to-hire, and the conversion salary is 140K max.** Responsibilities - Support and manage Windows enterprise management technologies, including Active Directory, DNS, and Certificate Authorities. - - Configure, troubleshoot, and maintain Windows Server operating systems in support of Active Directory, DNS, and Certificate Authorities. - Manage and maintain Active Directory systems and support Active Directory health checks with scripts. - Maintain the certificate environment, including issuing and installing certificates without outages. - Develop scripts to monitor system health for Active Directory, DNS, and Certificate Authorities. - Design, develop, and support scalable, redundant infrastructure across physical, virtualized, and cloud environments. - Install, configure, and manage Windows-based certificate authority servers. - Configure group management policies, including role-based access control. - Set up and maintain administrator and service accounts, document systems, tune performance, and install system-wide software. - Apply NIST, DISA security controls, and security hardening best practices. - Implement critical system patches and manage storage space efficiently. - Collaborate daily with engineering teams and system owners to influence design and architect solutions. - Manage project priorities, deliverables, and deadlines effectively. - Produce clear documentation for solutions provided. Requirements - BS in Computer Science, Systems Engineering, or related discipline. - - 8+ years of systems engineering or administration experience (6+ years with a MS/MIS Degree). - Experience orchestrating workflows with data dependencies. - Proficiency with DevOps tools and scripting languages including PowerShell. - 5+ years of experience with Directory services (Microsoft Active Directory, Entra ID/Azure AD), Certificate Administration, and DNS. - 4+ years supporting Tier II & Tier III Windows OS support. - 3+ years of experience with ADFS, OKTA, or similar authentication services. - Experience managing certificates and certificate authorities like Microsoft, Digicert, Entrust/Sectigo, SSL.com. - Excellent communication skills, both verbal and written. - Ability to work independently and with cross-disciplinary teams. System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law. #M-2 #LI-CK1 Ref: #851-Rockville-S1

Manage and support Windows Server infrastructure including Active Directory, DNS, certificate authorities, scripting, and security compliance. | 8+ years systems engineering with expertise in Active Directory, Windows OS support, certificate management, and PowerShell scripting. | Job Title: Senior Windows Server Systems Administrator Location: Washington, DC Type: Contract Compensation: $40 - $65 per hour Work Model: Remote – offsite Hours: 40.0 hours per week Security Clearance: U.S. Citizenship required and current - ATF (Bureau of Alcohol, Tobacco, Firearms and Explosives) Public Trust preferred Overview • *This Senior Windows Server Systems Administrator can work fully remote but must be in the DC Metro area in case the team needs to meet in person. This is likely to be a contract-to-hire, and the conversion salary is 140K max.** Responsibilities - Support and manage Windows enterprise management technologies, including Active Directory, DNS, and Certificate Authorities. - - Configure, troubleshoot, and maintain Windows Server operating systems in support of Active Directory, DNS, and Certificate Authorities. - Manage and maintain Active Directory systems and support Active Directory health checks with scripts. - Maintain the certificate environment, including issuing and installing certificates without outages. - Develop scripts to monitor system health for Active Directory, DNS, and Certificate Authorities. - Design, develop, and support scalable, redundant infrastructure across physical, virtualized, and cloud environments. - Install, configure, and manage Windows-based certificate authority servers. - Configure group management policies, including role-based access control. - Set up and maintain administrator and service accounts, document systems, tune performance, and install system-wide software. - Apply NIST, DISA security controls, and security hardening best practices. - Implement critical system patches and manage storage space efficiently. - Collaborate daily with engineering teams and system owners to influence design and architect solutions. - Manage project priorities, deliverables, and deadlines effectively. - Produce clear documentation for solutions provided. Requirements - BS in Computer Science, Systems Engineering, or related discipline. - - 8+ years of systems engineering or administration experience (6+ years with a MS/MIS Degree). - Experience orchestrating workflows with data dependencies. - Proficiency with DevOps tools and scripting languages including PowerShell. - 5+ years of experience with Directory services (Microsoft Active Directory, Entra ID/Azure AD), Certificate Administration, and DNS. - 4+ years supporting Tier II & Tier III Windows OS support. - 3+ years of experience with ADFS, OKTA, or similar authentication services. - Experience managing certificates and certificate authorities like Microsoft, Digicert, Entrust/Sectigo, SSL.com. - Excellent communication skills, both verbal and written. - Ability to work independently and with cross-disciplinary teams. System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law. #M-2 #LI-CK1 Ref: #851-Rockville-S1

Develop high-quality software with an engineering mindset, collaborating in a team and improving complex systems. | Senior software developer with demonstrated excellence, ability to understand complex systems, and willingness to learn new platforms like MuleSoft. | Java Software Developer Top Secret Clearance required Security+ certification is highly desired Direct Hire 100% Remote The specific platform knowledge (currently MuleSoft) can be learned. What cannot easily be taught is the engineering mindset and the ability to build high-quality software. While it is desirable for candidates to already possess Security+ certification and an active Top Secret clearance; our primary focus is on identifying exceptional software developers. What We''re Looking For: We are looking for someone who has consistently demonstrated excellence as a software developer—someone whose peers and leaders recognize them for delivering high-quality work. The ideal candidate has an engineering temperament: the ability to understand complex systems, reduce complexity through thoughtful design, and express that clarity through well-crafted code and architecture. They should possess a builder''s mindset—a belief that they can create solutions to difficult problems, a desire to build things well, and the initiative to improve systems without waiting to be asked. We value developers who thrive in collaborative environments, enjoy challenging one another to improve, and are committed to delivering results. We are looking for someone who takes ownership, contributes beyond the minimum expectations, and is invested in the success of the team. Technical Background: No specific programming language or platform is more important than demonstrated engineering capability. However, experience in the following areas would reduce the learning curve: • Java • Linux • Networking • MuleSoft (preferred, but not a primary hiring criterion) • MuleSoft experience is a plus, but we are intentionally hiring for software engineering talent rather than platform specialization. A great developer can learn MuleSoft; the reverse is not always true. Experience: • We want to see evidence of candidates building meaningful software components or systems and consistently going above and beyond in their projects. • A senior engineer with broad or deep experience would be an excellent fit, but seniority alone is not the deciding factor. A junior developer who demonstrates exceptional aptitude, initiative, and the potential to grow into a highly capable senior engineer is equally compelling. • Finally, candidates who bring unexpected strengths—whether in systems engineering, performance optimization, security, infrastructure, automation, or another technical discipline—are especially attractive. We value people who can surprise us with capabilities that make the entire team stronger. System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law. #M1 #LI-VH1 Ref: #851-Rockville-S1