Sr. Systems Administrator

CSCI Consulting•Indianapolis, IN

About The Position

CSCI Consulting is seeking a Senior Systems Administrator to support the administration, maintenance, and optimization of a complex Infrastructure-as-a-Service (IaaS) environment. The Senior Systems Administrator will be responsible for ensuring the availability, security, performance, and reliability of Linux, Windows Server, VMware, and cloud-based infrastructure platforms. In this role, you will partner with infrastructure teams, enterprise architects, application support personnel, and business stakeholders to deliver scalable, secure, and highly available technology solutions while supporting operational excellence and continuous improvement initiatives.

Requirements

Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related field, or equivalent combination of education, certifications, and experience
5+ years of experience administering and supporting enterprise server environments in production
Strong experience with Oracle Linux and Microsoft Windows Server operating systems
Experience administering and supporting VMware vSphere and virtualized infrastructure environments
Strong knowledge of Microsoft Active Directory Services
Working knowledge of SQL scripting and database concepts
Experience supporting DHCP, DNS, IIS, sFTP, and related infrastructure services
Knowledge of NAS and SAN storage technologies and connectivity concepts
Understanding of domain and forest administration, networking fundamentals, and routing/switching concepts
Experience with performance monitoring, tuning, capacity planning, and system optimization
Basic to intermediate proficiency with shell scripting and automation
Experience troubleshooting server, application, and infrastructure issues in production environments
Ability to design, document, and support enterprise infrastructure solutions
Strong analytical, troubleshooting, and problem-solving skills
Ability to gather, interpret, document, and evaluate technical requirements
Experience communicating technical solutions and recommendations to both technical and non-technical stakeholders
Creativity and adaptability in problem-solving
Ability to work with clients to understand their needs
Strong organizational and time-management skills
Excellent written and verbal communication skills
Professional presence

Nice To Haves

Experience with VMware Site Recovery Manager (SRM), VMware Cloud Director, and VMware migration tools and methodologies
Knowledge of Morpheus VM Essentials
Experience supporting Infrastructure-as-a-Service (IaaS) environments
Experience with public cloud platforms, including Microsoft Azure, AWS, Oracle Cloud Infrastructure (OCI), or Google Cloud Platform (GCP)
Experience migrating applications and services to cloud environments
Experience installing, configuring, and supporting CI/CD tools such as Jenkins and GitLab
Knowledge of containerization technologies, including Docker
Experience implementing and supporting analytics and reporting platforms such as Looker
Intermediate proficiency with Python, Bash, or other scripting languages for automation and integration
Experience with infrastructure automation and configuration management practices
Knowledge of networking and cybersecurity principles
Experience managing relationships with cloud providers and managed service vendors
Experience working within an ITIL-based service management framework
Understanding of disaster recovery, business continuity, and high-availability solutions
Relevant Linux certifications such as RHCSA, RHCE, Linux+, or equivalent
Microsoft, VMware, Azure, or cloud infrastructure certifications
Experience supporting financial services, government, or highly regulated environments
Experience developing operational standards, infrastructure governance processes, and technical documentation
Strong commitment to continuous improvement, operational efficiency, and customer satisfaction
Ability to work in a team environment, as well as independently
Strong customer and vendor relationship skills
Demonstrated ability to comply with data standards and policies
Motivation to learn new technologies and methodologies that demonstrate value
Past experience working with a state/local government agency

Responsibilities

Administer and support enterprise infrastructure environments, including VMware virtual machines, Oracle Linux, and Microsoft Windows Server operating systems
Troubleshoot and resolve complex server, infrastructure, and application issues independently and within established service level agreements
Install, configure, maintain, and support Microsoft Active Directory Services infrastructure
Manage and maintain Salesforce-related user accounts and access controls
Monitor platform performance, capacity, utilization, and overall system health to maximize availability and reliability
Administer DHCP, DNS, IIS, sFTP, and other critical infrastructure services
Support and manage cloud-hosted and virtualized infrastructure environments
Collaborate with Enterprise Architecture and cross-functional teams to design scalable, secure, and resilient infrastructure solutions
Maintain server hardware and software inventories, configurations, and technical documentation
Participate in database design, implementation, and support activities
Implement and enforce security standards, policies, and procedures across infrastructure environments
Manage Windows Server security configurations, vulnerability remediation, and patch management activities
Provision and administer user accounts, credentials, permissions, and access controls
Support web portals, middleware platforms, infrastructure applications, APIs, monitoring solutions, and network services
Facilitate deployment of application updates, enhancements, and infrastructure changes across environments
Develop recommendations for operational improvements and infrastructure optimization
Support incident management activities, including root cause analysis and service restoration efforts
Monitor, troubleshoot, and resolve backup failures and disaster recovery issues
Respond to infrastructure monitoring alerts and performance concerns
Manage and resolve customer support tickets, requests, and escalated technical issues
Participate in an on-call rotation supporting critical business systems during evenings, weekends, and holidays
Contribute to system architecture planning, infrastructure modernization, and cloud adoption initiatives
Develop and maintain operational procedures, configuration standards, and disaster recovery documentation