Senior Systems Administrator

Chenega MIOS • $135K — $160K *
US-AnywhereRemote in Washington DC, US
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in IT, Computer Science, or related technical field
  • 7+ years of experience in enterprise IT infrastructure management
  • Proficiency in hybrid environments (on-premises and cloud)
  • Hands-on experience with Microsoft Entra ID administration
  • Strong troubleshooting skills for complex systems and applications
  • Experience with ServiceNow for service management processes
  • Effective communication skills to collaborate with diverse stakeholders

Responsibilities

  • Administer and support enterprise hardware, software, and hybrid computing environments
  • Manage integration and interoperability of business applications and research platforms
  • Administer Microsoft Entra ID services and manage user access
  • Provide operational support using ServiceNow for incident and service request management
  • Diagnose and resolve complex infrastructure issues across multiple locations
  • Monitor system performance and implement maintenance activities
  • Develop and maintain comprehensive technical documentation

Benefits

  • Exposure to advanced technology and modernization initiatives
  • Opportunity to provide technical guidance and mentorship
  • Engagement with diverse internal IT teams and external vendors
  • Involvement in incident management and root cause analysis
  • Collaboration on significant infrastructure upgrades and cloud migrations
Full Job Description
Overview

Senior Systems Administrator who provides advanced systems administration, operational support, and technical leadership for enterprise IT services supporting back-office operations, public-facing systems, and research computing environments. This role is responsible for ensuring the availability, reliability, performance, and security of hybrid infrastructure and enterprise services while supporting daily operations, incident response, service delivery, and technology modernization initiatives.

Responsibilities

  • Administer, maintain, and support enterprise hardware, software, cloud, and hybrid computing environments to ensure optimal system performance and availability.
  • Manage and support enterprise infrastructure, ensuring seamless interoperability and integration among business applications, research platforms, network-connected resources, and supporting technologies.
  • Administer Microsoft Entra ID services, including user provisioning and deprovisioning, identity lifecycle management, authentication services, role-based access controls (RBAC), and access governance activities.
  • Provide operational support through ServiceNow-based service management processes, including incident response, service request fulfillment, problem resolution, and break/fix support.
  • Diagnose, troubleshoot, and resolve complex infrastructure, systems, and application issues across geographically dispersed environments.
  • Monitor system health, performance, and capacity utilizing enterprise monitoring tools; implement proactive maintenance and optimization activities to support operational continuity.
  • Develop, maintain, and update technical documentation, standard operating procedures, system configurations, architecture diagrams, and knowledge base articles.
  • Coordinate with internal IT teams, vendors, and stakeholders to support enterprise service delivery objectives, technology enhancements, and operational requirements.
  • Participate in incident management, root cause analysis, and corrective action activities to minimize service disruptions and improve system reliability.
  • Support infrastructure modernization initiatives, system upgrades, migrations, and implementation of new technologies in alignment with organizational objectives.
  • Ensure compliance with organizational security policies, standards, and best practices while maintaining the confidentiality, integrity, and availability of enterprise systems and data.
  • Provide technical guidance and mentorship to junior administrators and support personnel as needed.
  • Other duties as assigned


Qualifications

  • Bachelor's degree in Information Technology, Computer Science, Information Systems, Engineering, or a related technical field.
  • Minimum of seven (7) years of progressively responsible experience administering enterprise IT infrastructure, systems, and services in complex environments.
  • Experience supporting hybrid infrastructure environments that include on-premises and cloud-based technologies.
  • Hands-on experience administering Microsoft Entra ID (Azure Active Directory), including identity lifecycle management, authentication, access controls, and directory services.
  • Experience troubleshooting and resolving complex server, application, infrastructure, and systems integration issues.
  • Experience with enterprise service management tools such as ServiceNow for incident, problem, and change management activities.
  • Experience developing and maintaining technical documentation, standard operating procedures, and system configuration records.
  • Demonstrated knowledge of enterprise systems administration, virtualization technologies, operating systems, storage platforms, and network-connected resources.
  • Strong verbal and written communication skills with the ability to collaborate effectively with technical and non-technical stakeholders.
  • Ability to obtain and maintain any required government security clearance or public trust designation, if applicable.


Preferred Qualifications:
  • Microsoft Certified: Azure Administrator Associate, Identity and Access Administrator Associate, or similar industry-recognized certification.
  • Experience supporting federal government, healthcare, biomedical research, or scientific computing environments.
  • Experience administering Microsoft 365, Active Directory, Entra ID, Exchange Online, Intune, or related Microsoft cloud technologies.
  • Experience supporting high-availability, mission-critical enterprise systems across multiple geographic locations.
  • Knowledge of cybersecurity frameworks, security compliance requirements, and access governance best practices.
  • Experience with automation and scripting technologies such as PowerShell, Python, or similar tools.
  • ITIL Foundation certification or experience supporting ITIL-based service delivery processes.
  • Experience supporting infrastructure modernization, cloud migration, and digital transformation initiatives.


Knowledge, Skills and Abilities:
  • Advanced knowledge of enterprise systems administration, hybrid cloud environments, and IT infrastructure operations.
  • Strong understanding of Microsoft Entra ID, identity and access management, authentication technologies, and RBAC principles.
  • Experience supporting enterprise service management platforms, including ServiceNow.
  • Ability to troubleshoot complex technical issues across servers, applications, networks, and integrated systems.
  • Strong documentation, communication, and stakeholder engagement skills.
  • Knowledge of system monitoring, performance tuning, and operational continuity best practices.
  • Ability to manage multiple priorities in a fast-paced, mission-critical environment.


Estimated Salary/Wage

USD $135,000.00/Yr. Up to USD $160,000.00/Yr.

About Chenega MIOS

Chenega MIOS Careers

Joining Chenega MIOS offers a unique opportunity to become part of an exceptional team of professionals operating in a variety of fields. This company is renowned for its commitment to innovation, leadership, and professional growth, making it a prime choice for those looking to advance their careers.

Explore Job Opportunities

Chenega MIOS provides a plethora of job opportunities that cater to a diverse range of skills and interests. Each position at Chenega MIOS is designed to challenge team members while providing them with the tools to succeed. Prospective employees can expect to find themselves at the forefront of industry developments, working alongside seasoned professionals.

Experience the Culture and Benefits

Chenega MIOS is dedicated to fostering a workplace culture that values diversity and inclusion. Employees enjoy a comprehensive range of benefits designed to support both their professional and personal lives. From health and wellness programs to continuous learning and development opportunities, Chenega MIOS ensures that team members are well taken care of.

Internship Programs

For those beginning their career journey, Chenega MIOS offers internship programs that provide invaluable industry experience and exposure to real-world projects. Internships are a cornerstone of the company's commitment to nurturing new talent and equipping them with the necessary skills to excel.

Professional Growth and Development

Career advancement is a key focus at Chenega MIOS. Employees are encouraged to engage in ongoing professional development through workshops, seminars, and diversity training. The company supports career progression through leadership training programs that prepare individuals for future roles within the company.

Join the Team

Chenega MIOS is actively hiring and looking for individuals who are passionate, curious, and driven. Those interested in applying are encouraged to submit their resume and prepare for an interview process that values insight, experience, and a capacity for teamwork.

Networking and Innovation

At Chenega MIOS, networking and innovation go hand in hand. Employees are encouraged to collaborate across departments and utilize their unique perspectives to contribute to groundbreaking projects. This collaborative environment is integral to the company's success and helps foster a sense of community and shared purpose.

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