As a Senior Network Administrator, you play a critical role in building and maintaining our robust and secure enterprise network infrastructure. You ensure the seamless operation of our core systems, enabling vital business functions. This position offers the opportunity to apply advanced technical skills, solve complex challenges, and contribute directly to the stability and performance of our entire organization. You impact our ability to innovate and deliver reliable services daily.
Work Schedule: Monday through Friday, 8:00 a.m. to 5:00 p.m. Eastern Time, excluding federal holidays and Government closures. Occasional evening or weekend work may be required for emergencies, maintenance, incidents, or other mission-critical needs.
Position Responsibilities:
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Design, implement, and support enterprise LAN/WAN infrastructure to ensure high availability and optimal network performance.
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Administer enterprise routing and switching, including advanced BGP and OSPF configurations.
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Implement and maintain secure network environments, including VPNs, wireless networking, ACLs, segmentation, QoS, and vulnerability remediation.
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Manage core network services (DNS, DHCP, IPAM) and leverage network monitoring and performance tools to proactively maintain network health.
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Troubleshoot complex network issues, perform firmware upgrades and security patching, and maintain accurate network documentation.
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Significant experience supporting, designing, implementing, and maintaining complex enterprise LAN/WAN network environments.
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Expertise with enterprise routing and switching technologies, including BGP and OSPF.
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Experience configuring and supporting VPNs, wireless networks, firewalls, access control lists (ACLs), network segmentation, quality of service (QoS), DNS, DHCP, and IP address management (IPAM).
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Proficiency with network monitoring, alerting, logging, troubleshooting, and performance analysis tools to proactively identify and resolve complex network issues.
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Experience performing security patching, firmware upgrades, vulnerability remediation, and implementing network security best practices.
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Understanding of enterprise network architecture, security principles, and industry best practices.
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Excellent analytical, troubleshooting, and problem-solving skills with the ability to resolve complex technical issues.
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Strong technical documentation, written communication, and interpersonal skills, with the ability to communicate effectively with both technical and non-technical stakeholders.
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Ability to work from the designated Reston, Virginia location a minimum of three days per week.
Education & Experience:
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8 years of hands-on experience supporting enterprise network environments.
Preferred Qualifications:
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Bachelor's degree in Computer Science, or a related field.
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Holds industry certifications such as CCNA, CCNP, JNCIP, or equivalent.
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Possesses experience with specific vendor technologies (e.g., Cisco, Juniper, Palo Alto Networks).
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Active Secret Clearance
Why Join Sierra7?
Sierra7 is a Small Disabled Veteran Owned Business. We were founded in 2009 with the mission of “serving those who serve". We are a Service-Disabled Veteran-Owned Small Business (SDVOSB) and CMMI-SVC Level 3-appraised member of the government technology and services industry. We are a proud recipient of the 2024 Gold HIRE Vets Medallion Award from the US Department of Labor, which recognizes employers who successfully recruit, hire, and retain Veterans.
Benefits:
- Medical/Dental/Vision
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FSA (Flexible Spending Account)
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HSA (Health Savings Account)
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Life Insurance, Voluntary Life Insurance, Voluntary Short- and Long-Term Disability
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Additional Supplemental Medical Benefits
- Critical Care, Hospital Indemnity, Legal Plan, Accident
- 401K
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Legal Assistance
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Financial Wellness
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Paid Time Off (PTO)
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Federal Holidays
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Education Reimbursement
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LinkedIn Learning
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Employee Referral Program
This posting is for prospective candidates only. Unsolicited third-party resume submissions will be considered property of Sierra7, Inc. and will not be acknowledged or returned.
We will never send communications through any other domain, including @sierra7careers.com, @gmail.com or @yahoo.com. ALL communications will come from a @sierra7.com domain. We will never request payment from you, nor will we send payment to you, prior to your start date. If you have been asked to send or receive any payment, or if you have any doubt about whether you have been contacted by a Sierra7 employee, please contact us at [email protected]
Disclaimer:
Compensation Disclosure:
In accordance with applicable state and local pay transparency laws -California, Colorado, Hawaii, Illinois, Maryland, Massachusetts, Minnesota, Nevada, New Jersey, New York, Rhode Island, Vermont, Washington, and Washington, DC -, the salary range and a general description of benefits and other compensation for this position will be provided to applicants upon request and/or prior to an offer of employment. For more information reach out to
[email protected]
The above statements are intended to describe the general nature and level of work being performed by people assigned to this classification. They are not to be construed as an exhaustive list of all responsibilities, duties, and skills required of personnel so classified.
Sierra7 will not provide sponsorship for employment-based immigration benefits for this position. To be considered for this position all candidates must reside in the United States and be a US Citizen. This position is not a C2C opportunity.
Sierra7 is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to any status protected by federal, state, or local law.
Equal Opportunity Employer Veterans Disabled
