Sr. Staff Network Architect

Lockheed Martin; Littleton (CO); Remote; USD 122,000 - 217,000; Full time

Job summary

A leading company in the aerospace sector seeks a Network Design Engineer to design and optimize network infrastructure for high-performance and secure environments. The role requires deep expertise in Layer 2/3 networking, automation skills, and collaboration with cross-functional teams to meet business needs. Candidates with a strong background in network security and optimization will thrive in this role, which also supports flexible remote work options.

Benefits

Flexible work schedules

Comprehensive benefits package

Opportunity for remote work

Paid time off and holidays

401(k) match

Qualifications

• Experience in designing and optimizing large-scale campus LAN architectures.
• Hands-on experience with Cisco Wireless LAN Controllers (WLCs).
• Familiarity with Zero Trust Network Architecture (ZTNA).

Responsibilities

• Design, install, configure, and secure network infrastructure.
• Collaborate with cybersecurity teams to align network designs with security requirements.
• Develop network automation using platforms like Ansible to improve operational efficiency.

Skills

Expertise in Layer 2/3 networking

Automation experience with Python

Network security

Capacity planning

Strong analytical skills

Education

Relevant Bachelor's Degree

Tools

Cisco Catalyst switches

Cisco Identity Services Engine (ISE)

Cisco Catalyst Center (DNAC)

Ansible

Job description

Basic Qualifications :
• Expertise in Layer 2/3 networking, including VLANs, STP, VxLAN, OSPF, EIGRP, and BGP.
• Hands-on experience with Cisco Catalyst switches, Cisco WLCs (wireless LAN controllers), and Cisco Identity Services Engine (ISE) for NAC.
• Strong understanding of campus LAN architectures, spanning-tree optimizations, multicast, QoS, and high-availability designs.
• Experience with Cisco Catalyst Center (formerly DNAC) for automation, policy-based networking, and assurance.

Job Code/Title

Job Description

The Network Design Engineer is responsible for designing, installing, configuring, securing, hardening, troubleshooting, testing, and upgrading network infrastructure, including switches, routers, firewalls, IDS/IPS, encryptors, physical cabling, protected distribution systems (PDS), and software-defined networking (SDN). This role supports mergers and acquisitions (M&A) integration, ensuring seamless onboarding into the enterprise network while maintaining security and performance standards.

The engineer will collaborate with program managers, IT staff, cybersecurity teams, and program engineers to align network designs with business and security requirements. They will develop and enforce network design standards, ensuring compliance with DISA STIGs, NIST, ISO 27001, and DoD 8570.

Additional responsibilities include network automation using platforms like Cisco Catalyst Center, Arista CloudVision (CCF), or Ansible to improve operational efficiency. The role requires expertise in LAN/WAN, Layer 2/3 routing and switching (BGP, OSPF, EIGRP, IS-IS), network security, and capacity planning. The Network Design Engineer will also serve as a technical escalation point for complex networking issues and work with vendors to support and optimize network infrastructure.

What’s In It For You
From onsite to remote, we offer flexible work schedules to comprehensive benefits investing in your future and security, Learn more about Lockheed Martin’s comprehensive benefits package here.
Do you want to be part of a company culture that empowers employees to think big, lead with a growth mindset, and make the impossible a reality? We provide the resources and give you the flexibility to enable inspiration and focus -if you have the passion and courage to dream big, work hard, and have fun doing what you love then we want to build a better tomorrow with you.

Desired skills

• Automation experience with Python, Ansible, or APIs for network provisioning and configuration management.
• Experience designing and optimizing large-scale campus LAN architectures, including hierarchical and fabric-based networking models.
• Advanced proficiency with Cisco Software-Defined Access (SDA) and Cisco Catalyst Center (DNAC), including automation, policy-based networking, and AI-driven analytics.
• Familiarity with fabric networking solutions, including VxLAN, EVPN, and other SDN approaches used in modern campus environments.
• Strong scripting and automation skills using Python, Ansible, or APIs to streamline network operations and reduce manual tasks.
• Hands-on experience with Cisco Wireless LAN Controllers (WLCs), RF optimization, and troubleshooting wireless performance issues.
• Experience with Cisco Identity Services Engine (ISE) for NAC, segmentation, and authentication policies within fabric networks.
• Understanding of Zero Trust Network Architecture (ZTNA) and how it integrates with campus fabric designs.
• Knowledge of Cisco Smart Licensing, telemetry, and intent-based networking principles.
• Experience working with multi-vendor environments, including Arista, Juniper, and Aruba, for fabric networking comparison and interoperability.
• Exposure to network monitoring and visibility platforms such as LogicMonitor, SolarWinds, or ThousandEyes.
• Ability to develop and present network designs, automation workflows, and technology roadmaps to both technical and executive audiences.
• Strong analytical and troubleshooting skills with a proactive approach to network optimization and incident response.
• Ability to work collaboratively across engineering, security, and program management teams to ensure network solutions align with business and security objectives.

Other Important Information

By applying to this job, you are expressing interest in this position and could be considered for other career opportunities where similar skills and requirements have been identified as a match. Should this match be identified you may be contacted for this and future openings.

Ability to work remotely

Full-time Remote Telework: The employee selected for this position will work remotely full time at a location other than a Lockheed Martin designated office/job site. Employees may travel to a Lockheed Martin office for periodic meetings.

Select the Telework classification for this position

Employee that will telework full-time

Shift

First

Work Schedule Information

Lockheed Martin supports a variety of alternate work schedules that provide additional flexibility to our employees. Schedules range from standard 40 hours over a five day work week while others may be condensed. These condensed schedules provide employees with additional time away from the office and are in addition to our Paid Time off benefits.

Work Schedule

4x10 hour day, 3 days off per week

Security Clearance Information

This position requires a government security clearance, you must be a US Citizen for consideration.

Security Clearance

Secret

LMCareers Business Unit

ENTERPRISE BUSINESS SERVICES

Department

50273:Infrastructure VP

Job Class

Information Technology

Job Category

Experienced Professional

City, State

Littleton-CO

City

Littleton

80127

Virtual

yes

Relocation/Housing Stipend Available

No

Full-Time

Direct/Indirect

Direct

*

At Lockheed Martin, we use our passion for purposeful innovation to help keep people safe and solve the world's most complex challenges. Our people are some of the greatest minds in the industry and truly make Lockheed Martin a great place to work.

With our employees as our priority, we provide diverse career opportunities designed to propel, develop, and boost agility. Our flexible schedules, competitive pay, and comprehensive benefits enable our employees to live a healthy, fulfilling life at and outside of work. We place an emphasis on empowering our employees by fostering an inclusive environment built upon integrity and corporate responsibility.

If this sounds like a culture you connect with, you’re invited to apply for this role. Or, if you are unsure whether your experience aligns with the requirements of this position, we encourage you to search on Lockheed Martin Jobs , and apply for roles that align with your qualifications.

EEO

Lockheed Martin is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics.
The application window will close in 90 days; applicants are encouraged to apply within 5 - 30 days of the requisition posting date in order to receive optimal consideration.

National Pay Statement

Pay Rate: The annual base salary range for this position in California and New York (excluding most major metropolitan areas), Colorado, Hawaii, Illinois, Maryland, Minnesota, New Jersey, Vermont, Washington or Washington DC is $122,900 - $216,660. For states not referenced above, the salary range for this position will reflect the candidate’s final work location. Please note that the salary information is a general guideline only. Lockheed Martin considers factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience, education/ training, key skills as well as market and business considerations when extending an offer. Benefits offered: Medical, Dental, Vision, Life Insurance, Short-Term Disability, Long-Term Disability, 401(k) match, Flexible Spending Accounts, EAP, Education Assistance, Parental Leave, Paid time off, and Holidays. (Washington state applicants only) Non-represented full-time employees: accrue at least 10 hours per month of Paid Time Off (PTO) to be used for incidental absences and other reasons; receive at least 90 hours for holidays. Represented full time employees accrue 6.67 hours of Vacation per month; accrue up to 52 hours of sick leave annually; receive at least 96 hours for holidays. PTO, Vacation, sick leave, and holiday hours are prorated based on start date during the calendar year. This position is incentive plan eligible.

Pay Rate: The annual base salary range for this position in most major metropolitan areas in California and New York is $141,300 - $244,835. For states not referenced above, the salary range for this position will reflect the candidate’s final work location. Please note that the salary information is a general guideline only. Lockheed Martin considers factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience, education/ training, key skills as well as market and business considerations when extending an offer. Benefits offered: Medical, Dental, Vision, Life Insurance, Short-Term Disability, Long-Term Disability, 401(k) match, Flexible Spending Accounts, EAP, Education Assistance, Parental Leave, Paid time off, and Holidays. This position is incentive plan eligible.

About the company

Headquartered in Bethesda, Maryland, Lockheed Martin is a global security and aerospace company that is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services.

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