This position requires office presence of a minimum of 5 days per week and is only located at customer's site. Actual work location will be Suitland, MD AT&T Global Public Sector is a trusted provider of secure, IP enabl…
Skills: Systems administration, Windows, Red Hat Linux, Trusted Linux, VMware
What You Will Do: As a System Engineer Level 3 at Independent Software, you will provide senior-level systems and network engineering support for mission-critical environments. This role requires extensive hands-on exper…
Leidos, a Fortune 500 federal contractor with over $17B in annual revenue, is looking for top Finance and Business majors to join our organization as Finance and Business Operations (F&BO) interns. Our F&BO Summer Intern…
In a world of possibilities, pursue one with endless opportunities. Imagine Next! At Parsons, you can imagine a career where you thrive, work with exceptional people, and be yourself. Guided by our leadership vision of v…
Job Requirements Under limited supervision, acts as a team member to support of the University of Maryland Medical System’s (UMMS) Picture Archiving and Communication System (PACS) as well as other radiology and clinical…
Skills: PACS Administration, System Administration, User Training, Healthcare IT, Database Management
Enlighten, honored as a Top Workplace from USA Today, is a leader in big data solution development and deployment, with expertise in cloud-based services, software and systems engineering, cyber capabilities, and data sc…
Description About Us: eSimplicity is a modern digital services company that partners with government agencies to improve the lives and protect the well-being of all Americans, from veterans and service members to childre…
Description Position Summary We are seeking a Consultant – Public Health Informatics to help public-sector health organizations evaluate, modernize, and improve the technologies and information infrastructure that suppor…
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Skills: Large Language Models, Generative AI, Python, RAG, Prompt Engineering
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Company Description Renesas is one of the top global semiconductor companies in the world. We strive to develop a safer, healthier, greener, and smarter world, and our goal is to make every endpoint intelligent by offeri…
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Company Description Renesas is one of the top global semiconductor companies in the world. We strive to develop a safer, healthier, greener, and smarter world, and our goal is to make every endpoint intelligent by offeri…
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Quidient is a deep tech AI company pioneering advancements in Generalized (5D) Scene Reconstruction (GSR). GSR is poised to become one of the world’s great digital product categories (think GPS, MRI, and LMM). Our flagsh…
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Senior DevOps Engineer - $20K Sign On Bonus - 29712
Columbia, Maryland, United States · On-site
$138k–$185k/yr
Senior+
Enlighten, honored as a Top Workplace from USA Today, is a leader in big data solution development and deployment, with expertise in cloud-based services, software and systems engineering, cyber capabilities, and data sc…
Job Title: Platform Engineer Job Category: Engineering 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 * * *…
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Junior Systems Engineer with TS/SCI Clearance & Full Scope Polygraph - Hyrid in Annapolis Jct, MD
Columbia, Maryland, United States · Hybrid
Mid level
An active Top Secret/SCI Clearance with a Full Scope Polygraph is required. This job is onsite in Annapolis Junction, MD with 1 remote day each week. We have an immediate need for a Junior Systems Engineer to support the…
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Skills: Test and Evaluation, System Requirements Analysis, Data Collection, Performance Analysis, Modeling and Simulation
Job Title: Platform Engineer Job Category: Engineering 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 * * *…
Skills: Ansible, Automation, Infrastructure as code, System monitoring, Prometheus
AI Engineer with TS/SCI Clearance & Full Scope Polygraph - Hybrid role in Annapolis Junction
Columbia, Maryland, United States · Hybrid
Senior
An active Top Secret/SCI Clearance with a Full Scope Polygraph is required. This is a hybrid schedule with up to 3 days/week remote and 2 days/week onsite in Annapolis Junction, MD. We have an immediate need for an Artif…
Skills: Python, Large Language Models, Prompt Engineering, LangChain, LlamaIndex
508 Compliance Specialist / Front-End Developer with TS/SCI Clearance & Full Scope Polygraph-Hybrid
Columbia, Maryland, United States · On-site
Senior
An active Top Secret/SCI Clearance with a Full Scope Polygraph is required. This job is 100% onsite in Annapolis Junction, MD. We have an immediate need for a Front-End Developer/508 Compliance Specialist to support appl…
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$89k–$220k/yr
Full-time
bachelor degree
Medical coverage, Dental coverage, Vision coverage, 401(k) plan, Tuition reimbursement program, Paid Time Off
Posted 3d ago
Apply by Dec 8
~40 hrs/week
Responsibilities
The Senior Systems Administrator will maintain, document, and administer enterprise IT systems to ensure availability, reliability, and security. Responsibilities include troubleshooting complex hardware and software issues, performing root-cause analysis, and coordinating with various technical teams.
Requirements
Candidates must have a bachelor's degree in a related field and at least eight years of relevant systems administration experience. The role requires an active TS/SCI clearance with polygraph and proficiency in Windows, Linux, and VMware environments.
Full job description
This position requires office presence of a minimum of 5 days per week and is only located at customer's site. Actual work location will be Suitland, MD
AT&T Global Public Sector is a trusted provider of secure, IP enabled, cloud-based, network solutions and professional services to the Federal Government. We are dedicated to recruiting, developing and empowering a diverse, high-performing workforce that is passionate about what they do, committed to our shared values and dedicated to our customers’ mission.
AT&T has an opening for a Senior System Administrator to support operations by maintaining, documenting, and administering enterprise IT systems. This role is the Senior System Administrator will deliver helpdesk and troubleshooting support, oversee problem resolution, and maintain system configurations to ensure availability, reliability, and security.
Job Duties/Responsibilities:
Install, configure, administer, monitor, patch, upgrade, and maintain enterprise systems.
Support Windows, Red Hat Linux, Trusted Linux, VMware, applications, endpoints, and related infrastructure.
Troubleshoot complex hardware, software, access, performance, connectivity, and availability issues.
Perform root-cause analysis and implement authorized corrective actions.
Administer user accounts, permissions, and access controls.
Support backups, restoration, recovery testing, and continuity procedures.
Implement approved security patches, configuration changes, and vulnerability remediation.
Monitor system health, capacity, performance, services, logs, and storage utilization.
Maintain system documentation, SOPs, technical manuals, work logs, configuration records, and help-desk tickets.
Support configuration management, change control, system testing, deployment, sustainment, modernization, and decommissioning.
Coordinate with cybersecurity, network, database, software, systems engineering, and government teams.
Provide technical guidance and mentoring to junior administrators.
Comply with classified-information handling, Information Assurance, access-control, and customer-security requirements.
Clearance Requirements:
Active TS w/SCI Eligibility with poly (#tssci) (#polygraph)
Required Qualifications:
Bachelor’s degree in information technology, computer science, engineering, or a related field.
Eight years of relevant systems administration or infrastructure-support experience.
Experience supporting Windows, Linux, VMware, enterprise applications, hardware, and software.
Experience with incident resolution, system maintenance, technical documentation, and change-control processes.
Ability to obtain and maintain required security clearance, access eligibility, and customer approvals.
Desired Qualifications:
Security+ or relevant certification.
Experience supporting classified, secure, disconnected, or restricted environments.
Experience with PowerShell, Bash, Python, or other system-administration automation.
Experience with vulnerability remediation, system hardening, monitoring, backup, and recovery.
Our Senior System Administrator's earn between $89,200 - $220,480. Not to mention all the other amazing rewards that working at AT&T offers. Individual starting salary within this range may depend on geography, experience, expertise, and education/training.
Joining our team comes with amazing perks and benefits:
Medical/Dental/Vision coverage
401(k) plan
Tuition reimbursement program
Paid Time Off and Holidays (based on date of hire, at least 23 days of vacation each year and 9 company-designated holidays)
Paid Parental Leave
Paid Caregiver Leave
Additional sick leave beyond what state and local law require may be available but is unprotected
Employee discounts up to 50% off on eligible AT&T mobility plans and accessories, AT&T internet (and fiber where available) and AT&T wireline phone
Weekly Hours:
40
Time Type:
Regular
Location:
Columbia, Maryland
AT&T and its subsidiaries are committed to equal employment opportunity. All hiring, promotion, and other employment decisions remain merit-based and free from discrimination on the basis of race, color, religion, religious creed, national origin, ancestry, age, sex, sexual orientation, gender, gender identity, gender expression, physical disability, mental disability, pregnancy, medical condition, genetic information, marital status, citizenship status, military status, veteran status, or any other characteristic protected by federal, state, or local laws. In addition, AT&T will provide reasonable accommodations to qualified individuals with disabilities. AT&T is a fair chance employer and does not initiate a background check until an offer is made. Click here to learn more or request an application accommodation here.
Related keywords
Systems AdministrationWindowsRed Hat LinuxTrusted LinuxVMwareEnterprise ITSecurity+PowerShellBashPythonVulnerability RemediationSystem HardeningBackupRecoveryTS/SCIPolygraph
We understand that our customers want an easier, less complicated life.
We’re using our network, labs, products, services, and people to create a world where everything works together seamlessly, and life is better as a result. How will we continue to drive for this excellence in innovation?
With you.
Our people, and their passion to succeed, are at the heart of what we do. Today, we’re poised to connect millions of people with their world, delivering the human benefits of technology in ways that defy the imaginable.
What are you dreaming of doing with your career?
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To learn more about joining AT&T, visit: http://www.att.jobs
We provide in some of our posts links to articles or posts from third-party websites unaffiliated with AT&T. In doing so, AT&T is not adopting, endorsing or otherwise approving the content of those articles or posts. AT&T is providing this content for your information only.
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Based on 398 listings with disclosed salaries, most technology jobs in Columbia, MD pay between $75k–$225k per year. Individual offers vary with seniority, company size, and specialization.
How many Technology jobs are open in Columbia, MD right now?
There are currently 556 open technology positions in Columbia, MD listed on Clera. New openings are added daily as companies post roles.
Which companies are hiring for Technology roles in Columbia, MD?
Companies currently hiring include Independent Software, BigBear.ai, Parsons Corporation, AT&T, Leidos, among others. Browse the listings above to see every active employer.
Are there remote or hybrid Technology jobs in Columbia, MD?
Yes — 150 of the 556 open technology positions offer remote or hybrid work (28 remote, 122 hybrid).
How do I apply for Technology jobs in Columbia, MD?
Each listing links directly to the employer's application page. Apply early — fresh listings get the most recruiter attention in the first two weeks.