Network Engineer Sr - E3

Lockheed Martin; King of Prussia (PA); On-site; USD 96,000 - 178,000; Full time

Benefits offered by this job

Medical insurance

401(k) match

Flexible schedules

Paid time off

Job summary

Lockheed Martin Space is seeking a Network Engineer with a Final DoD Secret clearance to support mission-critical SATCOM ground systems in an Agile environment. You will design, implement, and sustain secure networks across distributed locations, collaborating with a cross-functional team to deliver high-performance solutions.

Responsibilities include SDN deployment, network testing, and performance monitoring, with emphasis on security, resiliency, and compliance with DoD standards.

Qualifications

• Active Final DoD Secret clearance or higher with ability to obtain TS/SCI.
• Experience with Software Defined Networking (SDN) and data flow analysis.
• Current or ability to obtain CCNA/CCNP certification.
• Fundamental knowledge of TCP/IP, UDP, SMTP, NFS, DHCP, DNS, FTP, Telnet, SSH and firewall policy design.

Responsibilities

• Design and plan network communications systems for geographically dispersed SATCOM operations.
• Develop specifications for network architecture, hardware selection, and implementation tools.
• Conduct testing, data-flow analysis, performance monitoring, and troubleshooting of network designs.
• Evaluate emerging communications technologies and recommend enhancements for security and resiliency.
• Implement SDN solutions and integrate with existing infrastructure.
• Provide expertise on network/hardware/software interconnection and data exchange.
• Participate in Agile ceremonies to deliver high-quality solutions.

Skills

Clearance (DoD Secret)

Network design

Communication

Team collaboration

Problem solving

Tools

SDN

CCNA/CCNP

Red Hat

VMware

Wireshark

JIRA/Confluence

Job description

Standard Job Description

Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more - we can innovate, invest, inspire and integrate our capabilities to transform the future.

Standard Job Description

Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more - we can innovate, invest, inspire and integrate our capabilities to transform the future.

At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We're creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security vision. We're erasing boundaries and forming partnerships across industries and around the world. We're advancing spacecraft and the workforce to fuel the next generation. And we're reimagining how space can connect us, ensuring security and prosperity.

Join us in shaping a new era in space and find a career that's built for you.

Lockheed Martin is seeking a talented Network Engineer with a Final DoD Secret clearance to work on mission-critical Military Satellite Communications (SATCOM) Ground systems within an Agile Development Environment. You will be a key member of the Component Integration Team, assisting in the design, implementation, and sustainment of Ground Systems that support secure, high-performance communications. As a

Network Engineer You Will

• Design and plan network communications systems that support geographically dispersed, cross-site SATCOM operations, including multi-pathing and redundancy.
• Develop detailed specifications and schematics for network architecture, hardware selection, and implementation tools that address current and future capacity requirements.
• Conduct testing and validation of network designs, including data-flow analysis, performance monitoring, and troubleshooting.
• Evaluate emerging communications technologies and recommend enhancements to improve network capability, resiliency, and security.
• Implement Software Defined Networking (SDN) solutions and integrate them with existing infrastructure.
• Provide technical expertise on network and computer hardware/software interconnection, ensuring seamless data exchange between applications and remote locations.
• Participate in Agile ceremonies (sprint planning, daily standups, sprint reviews, retrospectives) to deliver high-quality solutions continuously.

Basic Qualifications

• Active Final DoD Secret clearance with the ability to obtain and maintain TS/SCI.
• Proven experience with Software Defined Networking (SDN) and Data Flow Analysis.
• Current or ability to obtain CCNA/CCNP certification.
• Fundamental knowledge of network protocols: TCP/IP, UDP, SMTP, NFS, DHCP, DNS, FTP, Telnet, SSH, and firewall policy design.

Desired Skills

• DoD8570.01‑M IAT LevelII or III certification (e.g., Security+, CASP, CISSP).
• Experience operating within Red Hat based environments.
• Familiarity with DISA STIG checklists and hardening of Layer2/Layer3 switches.
• Hands‑on experience with Type 1 encryption devices (e.g., TACLANE).
• Proficiency using protocol analyzers/sniffers such as Wireshark.
• Interest/experience with automation tools (Ansible, Terraform, etc.).
• Knowledge of military SATCOM systems and secure communication protocols.
• Experience with virtualization technologies, including VMware.
• Familiarity with Agile development tools (JIRA, Confluence).
• Strong problem-solving ability, attention to detail, and capacity to manage multiple tasks efficiently.
• Strong written and verbal communication skills; ability to collaborate in a fast‑paced, team oriented environment.
• Proficient in AI prompting as it applies to this position and practice

Pay Information

Full-Time Salary Range: $95900.00 - $178100.00

At Lockheed Martin, we know mission success starts with taking care of our people. Our Total Rewards program is designed to attract top talent, support your well-being, and help you grow-both professionally and personally.

The salary range for this position is as listed on the requisition. Please note that the salary information listed 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(work location) and business considerations when extending an offer.

Benefits offered:

Medical, Dental, Vision, Flexible work arrangements and schedules (e.g., 4x10), 401(k) match, Paid time off, Holidays, Parental Leave, EAP, Flexible Spending Accounts, Education Assistance, Life Insurance, Short-Term Disability, and Long-Term Disability.

• Annual short-term and/or long-term incentive compensation programs may be offered depending on the position. Payments under these annual programs are not guaranteed and can vary from year to year and are tied to a range of performance metrics.
• For (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.