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Principal Linux Systems Administator

Leidos · Aurora, CO · posted 2 days ago

In short: Principal Linux Systems Administator at Leidos in Aurora, CO, posted 2 days ago.

By AtiveSite · Published 07/11/2026 · Updated 08/11/2026 · Every figure is linked to its source below.

Leidosemployer

Aurora, COlocation

Software engineeringsub-niche

2 days agoposted

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The job

LIVE Live feed (private-sector employer) Source: The Muse public API · Data: listed 2026-11-06

Employer	Leidos
Location	Aurora, Colorado
Field	Technology › Software engineering
Level	Senior Level
Source category	Software Engineering
Posted	2026-11-06 (2 days ago)
Work arrangement	On-site at the location listed
Pay	Not published in the source listing

Job description

CO Salary Range: USD 131,300.00 - 237,350.00 per year

Description

Leidos has a new and exciting opportunity for a Principal Linux Systems Administrator in our Intelligence Sector, Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security!

Join our team as a Linux Systems Administrator, where you'll provide crucial support for the implementation, troubleshooting, and maintenance of Information Technology (IT) systems. You'll manage IT system infrastructure and processes, ensuring the smooth operation of client/server/storage/network devices, mobile devices, and more. Your role will involve configuring and managing UNIX and Windows operating systems, troubleshooting, maintaining network integrity, and enhancing system performance.

This position is eligible for a 10k Sign on Bonus!

Primary Responsibilities:

Maintain STE/STN Compliance: Ensure systems meet security and compliance standards.
Account and Access Management: Manage accounts, network rights, and access to systems and equipment, implementing security procedures and tools.
System Configuration and Management: Configure and manage UNIX and Windows operating systems, install/load software, troubleshoot, maintain network integrity, and implement system enhancements.
IT Support and Troubleshooting: Provide day-to-day IT support, monitoring, and problem resolution for client/server/storage/network devices and mobile devices.
User Assistance: Assist users in accessing and using IT systems, providing support for escalated tickets and detailed analysis.
System Optimization and Capacity Planning: Optimize system operations and resource utilization, perform system capacity analysis and planning.
Dispatch System and Hardware Support: Support dispatch systems and hardware issues, configure and install system hardware/software, and maintain server and domain security requirements.

Basic Qualifications:

Experience: Fifteen (15) or more years of experience as a System Administrator (SA) supporting programs and contracts of similar scope, type, and complexity.
Education: Bachelor's degree in a technical discipline from an accredited college or university. Five (5) years of additional SA experience may be substituted for a bachelor's degree bringing the required experience to 20 years.
Technical Skills: Experience with LINUX, Windows and Virtualization
Security Clearance: Must have an active Top Secret/SCI with Polygraph

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If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

Original Posting:
August 7, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:
Pay Range $131,300.00 - $237,350.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Explore around this job

Field: Technology Sub-niche: Software engineering All jobs at Leidos Jobs in Colorado Jobs in Aurora, CO Aurora city guide Colorado state guide Arapahoe County economy

View this job and apply on The Muse →

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About the role

This is a Senior Level role in the Technology field (Software engineering) at Leidos. Senior roles usually expect substantial experience, ownership of results and often the ability to guide others.

We could not match this job title to one occupation in the official wage statistics, so no pay estimate is shown. Pay is not in the source listing; ask the employer for the range and compare in the 240 job niches.

Does the pay work here? (estimate)

Gross salary a year Filing State income tax rate %

Estimate for a wage earner: 2026 federal brackets and standard deduction (IRS), Social Security 6.2% up to $184,500, Medicare 1.45% (+0.9% above $200,000 single / $250,000 married), and a state rate you set; set your own state tax rate. It ignores credits, pre-tax deductions, local taxes and benefits. Sources: IRS: tax year 2026 inflation adjustments · SSA wage base per Federal Register notice 2025-19763.

How to prepare and behave

This is editorial guidance, not information from the employer.

Read the whole description and match your examples to its requirements; use the same words the posting uses where they are true for you.
Research the employer before the interview: what it does, who its customers are and recent news; prepare two or three questions about the work.
Arrive early (or log in early for a video call), dress one step above the daily dress code, and test your camera and audio beforehand.
Answer with short stories: the situation, what you did and the result. Give numbers when you have them and never invent them.
Be honest about gaps; say what you did to learn and how fast you can close them.
Ask about the team, the first 90 days, how success is measured and the schedule; do not open with salary and time off.
When pay comes up, know the market range for the occupation and your lowest acceptable offer before you answer; ask for the full package in writing.
Send a short thank-you message within a day, mentioning one thing you discussed.
Have code, data work or projects you can show, and be ready to think aloud: many technical interviews test how you reason, not only the answer.

Know your rights as a candidate and an employee:

The city

The job is in Aurora, CO. Below is what the official statistics say about living and working there.

How Aurora compares. Among the 80 largest places in Colorado, Aurora is #3 by population, #56 for long commutes (#1 = fewest), #55 for homeownership (#1 = highest), #53 for college degrees (#1 = most). Its county, Arapahoe County, is #4 of 64 counties for average pay ($85,628).

The place in numbers

Aurora has 394,432 residents (ACS 2020–2024), about 6.7% of the population of Colorado. It covers 164 square miles of land, which works out to roughly 2,404 people per square mile. The median age is 35.3, 6% younger than the state median (35.3 against 37.7).

Housing

The median gross rent is $1,835 a month (rent plus utilities), 4% above the state median ($1,835 against $1,761). Over a year that is 24.9% of the median household income. US housing guidance treats housing as affordable when it takes 30% of income or less, so the typical household is under that line. The median home value is $469,100, which is 5.3 times the median household income ($88,368); a ratio above 5 usually means buying is out of reach without savings or a second income. 62.4% of households own their home, 6% below the state average (62.4% against 66.2%).

Work and pay

The Denver-Aurora-Centennial, CO metropolitan area has 1,609,350 jobs in the BLS wage survey, and the median pay across all occupations is $62,320 a year, 22% above the national median ($62,320 against $50,980). The biggest occupation groups are business and financial operations (169,260 jobs, median $96,450); office and administrative support (168,520 jobs, median $53,050); sales and related (165,560 jobs, median $49,730). The area is most specialised in architecture and engineering (1.6 times) and computer and mathematical (1.6 times), where the share of workers is well above the national share. The best-paying groups with at least 5,000 jobs are management ($160,810) and legal ($132,690). In 2026M09 the unemployment rate of Arapahoe County was 4.3%. 71.3% of residents aged 16 and over are in the labour force. The city lies in Arapahoe County; its jobs, pay by industry and GDP are on the county page.

Getting around

Among workers, 66.5% drive alone, 3.4% use public transit, 1.5% walk, 16.4% work from home. 16.4% of workers commute 45 minutes or more, 17% above the state average (16.4% against 14.1%).

People and education

33.6% of adults aged 25 and over hold a bachelor's degree or higher, 26% below the state share (33.6% against 45.7%). 22.4% of residents were born outside the United States, 127% above the state share (22.4% against 9.8%). The poverty rate is 11.9%, 26% above the state rate (11.9% against 9.4%).

Climate

The warmest month is Jul, averaging 72°F (22.3°C), and the coolest is Dec at 28°F (-2.1°C). About 440 mm (17 inches) of precipitation falls in a year; Jul is the wettest month (62 mm) and Jan the driest (17 mm). These values come from NASA satellite-based climatology on a grid of about 50 km, so they describe the wider area, not a weather station in the city.

Nearby cities to compare

Closest cities in this guide: Four Square Mile (9 miles, similar rent); Denver (9 miles, similar rent); Cherry Creek (10 miles, rent 14% higher); Centennial (11 miles, rent 17% higher). Rent differences are against Aurora; use the Compare tab to put any two cities side by side.

Full guide to Aurora →Colorado guide All jobs in Aurora

Official links for Aurora

These links go to official sources and open in a new window. The first one is the government's or company's own site as listed in Wikidata (property "official website"); check it before relying on it.

Where to live

CITY Official statistics Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year (via Census Reporter) · Data: ACS 2020–2024

Places within 50 miles (straight line) of Aurora, CO that have a guide, with what living there costs. No pay estimate is shown because the title did not match one occupation.

Sort:

Place ⇅	Distance from the job city ⇅	Median rent ⇅	Median home value ⇅	Median household income ⇅	Commute 45+ min ⇅	Rent as % of occupation pay ⇅	Open jobs there ⇅
Aurora, CO	0 mi	$1,835	$469,100	$88,368	16.4%	n/a	Jobs
Four Square Mile, CO	9 mi	$1,833	$474,200	$80,903	13.8%	n/a	—
Denver, CO	9 mi	$1,831	$616,000	$94,718	11.0%	n/a	Jobs
Cherry Creek, CO	10 mi	$2,093	$888,900	$153,776	9.8%	n/a	—
Centennial, CO	11 mi	$2,148	$658,100	$131,928	12.8%	n/a	Jobs
Greenwood Village, CO	12 mi	$2,123	$1,237,800	$149,029	5.6%	n/a	—
Commerce City, CO	13 mi	$1,880	$499,700	$111,972	18.2%	n/a	—
Stonegate, CO	13 mi	$2,170	$641,600	$159,086	17.3%	n/a	—
Parker, CO	14 mi	$2,096	$646,300	$133,369	15.1%	n/a	—
Lone Tree, CO	15 mi	$2,139	$874,100	$123,741	16.0%	n/a	—
Englewood, CO	15 mi	$1,668	$572,900	$86,800	9.1%	n/a	Jobs
Welby, CO	16 mi	$1,656	$385,000	$80,026	12.3%	n/a	—
Sherrelwood, CO	17 mi	$1,702	$432,200	$75,327	16.6%	n/a	—
Berkley, CO	18 mi	$1,777	$468,100	$84,637	10.8%	n/a	—
Highlands Ranch, CO	18 mi	$2,531	$712,700	$159,307	13.5%	n/a	—
Littleton, CO	18 mi	$1,819	$630,600	$98,839	12.7%	n/a	—
The Pinery, CO	18 mi	$2,910	$791,100	$194,446	24.2%	n/a	—
Brighton, CO	18 mi	$1,779	$499,500	$107,679	23.2%	n/a	—
Thornton, CO	19 mi	$1,895	$517,500	$103,088	20.5%	n/a	—
Castle Pines, CO	19 mi	$2,211	$895,500	$191,229	16.1%	n/a	—

Career paths

We could not match this title to one occupation, so here are the other sub-niches in Technology, where your skills may carry over:

Cybersecurity (366) Data, analytics and AI (1991) Cloud, IT and infrastructure (504) Product management (412)

Distances

CITY Calculation (straight line) Source: U.S. Census Bureau Gazetteer (coordinates) · Data: 2024

How far Aurora, CO is from the 20 largest US cities, in straight-line miles (not driving distance). Click a column to sort.

Sort:

From ⇅	Straight-line distance (miles) ⇅	Population of that city ⇅
Denver, CO	9 mi	718,877
Oklahoma City, OK	491 mi	697,125
Phoenix, AZ	588 mi	1,642,323
Fort Worth, TX	630 mi	963,194
Dallas, TX	651 mi	1,307,930
Austin, TX	760 mi	979,539
San Antonio, TX	790 mi	1,479,835
San Diego, CA	839 mi	1,389,526
Los Angeles, CA	851 mi	3,857,263
Houston, TX	865 mi	2,328,253
Chicago, IL	902 mi	2,711,226
San Jose, CA	938 mi	990,138
Indianapolis, IN	985 mi	885,860
San Francisco, CA	995 mi	830,235
Seattle, WA	1,033 mi	754,195
Columbus, OH	1,150 mi	914,802
Charlotte, NC	1,342 mi	903,844
Jacksonville, FL	1,451 mi	977,670
Philadelphia, PA	1,562 mi	1,579,706
New York, NY	1,618 mi	8,483,844

Nearby cities with open jobs (within 120 miles)

Sort:

City ⇅	Straight-line distance ⇅	Open jobs ⇅
Denver, CO	9 mi	220
Boulder, CO	36 mi	8
Longmont, CO	38 mi	2
Cheyenne, WY	98 mi	1

The employer

Leidos is the employer in this listing. See all its open jobs here →

Company description (from The Muse): Leidos is a Fortune 500® innovation company rapidly addressing the world’s most vexing challenges in national security and health.

size: Large Size; industries: Information Technology; locations on The Muse: Reston, VA.

It is among the 200 largest US-headquartered employers in our list, with about 47,000 employees worldwide (year not stated). Company page with headquarters, state economy and official links →

Official links for Leidos

The employer's profile on The Muse →

What it is like to work at a company (culture, schedules, benefits) is not in the source data, so we do not describe it. Read the description and ask the questions under "How to prepare".

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FAQ

What is the Principal Linux Systems Administator job at Leidos?

A senior level role in technology (software engineering) listed 2 days ago. The full description is on this page and on The Muse.

Where is this job?

Aurora, CO.

How do I apply?

Use the "View this job and apply on The Muse" button. AtiveSite does not receive applications.

How much does it pay?

The listing does not publish pay, and we could not match the title to one official occupation.

What is the cost of living there?

Median rent in Aurora is $1,835 a month and median household income $88,368 (ACS 2020–2024).

How old is this listing?

It was posted on 2026-11-06 (2 days ago). Jobs older than 90 days are not shown.

Are there similar jobs?

Yes: browse software engineering jobs in Colorado.

Sources and terms

Job data: The Muse public API (listing dated 2026-11-06). The job disappears from this site when it disappears from the source.
Wages and projections: BLS OEWS (May 2025) and Employment Projections 2025–35.
City and county figures: Census Bureau ACS 2020–2024, BEA, BLS QCEW and LAUS, NASA POWER climatology; distances from Census Gazetteer coordinates.

AtiveSite is not affiliated with or endorsed by The Muse, the employer or any government agency, and does not process applications. Verify every detail with the employer before acting.

Sources

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