Entry Level Linux Help Desk Jobs in Denver, CO (NOW HIRING)

Job Title: Mission IT Operator
Job Category: Information Technology
Time Type: Full time
Minimum Clearance Required to Start: TS/SCI with Polygraph
Employee Type: Regular
Percentage of Travel Required: None
Type of Travel: None
Anticipated Posting End: 9/14/2026
You will perform as a Mission IT Operator supporting a 24x7 government mission. You will provide direct support for detecting, isolating, and resolving ground segment problems; and serve as first responder for all site issues. This position requires broad knowledge of both Windows and Linux-based systems across a global environment.
Shift Work (12 hours a day 0600-1800, 1800-0600/ 4 on 4 off (Day, Day, Night, Night).
Responsibilities-
- Responsible for resolving IT hardware and software infrastructure (servers, network, security, etc.) issues using systems
- Analysis techniques and procedures.
- Ensure appropriate function of hardware, software, or system functional specifications.
- Analyzes, troubleshoots, and resolves issues with IT infrastructure including user systems, servers, storage, and network connectivity.
- Provides system administration for assigned infrastructure and establishes and maintains security as it relates to users.
- Supports new infrastructure projects.
- Maintains all configuration documentation for assigned infrastructure.
- Master the steps required to effectively manage and prioritize incidents.
- Support in times of high call volume, first-level technical support in a 24x7 world-class service center, responding to inbound incidents and service requests via phone, email, and walk-up channels.
- Deliver frontline support for system, application, network, and infrastructure issues, ensuring fast, accurate triage and resolution.
- Create and manage support tickets in a web-based ITSM/CRM platform while actively troubleshooting and communicating with end users. Perform initial assessment, triage, and resolution for common incidents; escalate complex or critical issues to Tier 2 or appropriate technical teams
- Ensure that all technical baseline infrastructure is maintained at an optimal level to satisfy customer mission needs.
- Monitor, recognize, evaluate, and correlate system and network problems.
- Responsible for maintaining a privileged user level of access, across numerous high-priority systems.
- Interface daily with government and partner country senior leadership, system operators, and engineers at the site and across the enterprise.
- Interpret system documentation and record problems in appropriate reporting tools.
- Support after-action activities, by collecting data that describes the environment at the time of the failure.- Serve as a single point of contact for monitoring, troubleshooting, and anomaly resolution.
- Restart system services and hardware as needed.
- Escalate problems to Tier 2 level as required, and notify mission director if priority or severity necessitates.
- Coordinate with any required resources across the enterprise to resolve operational issues.
- Work with other 24x7 ground segments across multiple locations providing enterprise-level maintenance support, with high customer visibility into all actions and responses.
Required Qualifications:
- Active TS/SCI with Poly required.
- Must have a current DODI 8570.01-M IAT Level II Certification, Security+ Certification.
- Excellent communication skills ensuring effective and accurate exchange of information across a multi-location enterprise, with customer visibility into crew-based actions and responses.
- Must be able to work a non-standard work week, weekends, and holidays; 12-hour shift work expected in support of 24x7 operations.
- System administration experience to include UNIX, Linux, and Windows platforms
Desired Qualifications:
- Experience with virtualization technologies and software such as VMware
- Knowledge and understanding of Enterprise Management Systems including HP OpenView, and CA-based Concord
What You Can Expect:
A culture of integrity.
At CACI, we place character and innovation at the center of everything we do. As a valued team member, you'll be part of a high-performing group dedicated to our customer's missions and driven by a higher purpose - to ensure the safety of our nation.
An environment of trust.
CACI values the unique contributions that every employee brings to our company and our customers - every day. You'll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.
A focus on continuous growth.
Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground - in your career and in our legacy.
Pay Range:
There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.
The proposed salary range for this position is:
$58,400 - 116,900 USD
CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.