Network Engineer Sr - E3

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

Benefits offered by this job

Medical, Dental, Vision

Flexible work schedules

401(k) match

Paid time off

Parental Leave

Job summary

Lockheed Martin Space is seeking a skilled Network Engineer with a Final DoD Secret clearance to design, implement, and sustain ground systems for mission-critical SATCOM within an Agile environment. You will join the Component Integration Team to ensure secure, high-performance communications across multiple locations.

The role demands SDN experience, strong networking fundamentals, and the ability to collaborate in a fast-paced, team-oriented setting.

Qualifications

• Active Final DoD Secret clearance with ability to obtain 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, 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 and validation of network designs, including data-flow analysis and performance monitoring
• Evaluate emerging communications technologies and recommend enhancements for resiliency and security
• Implement Software Defined Networking (SDN) solutions with existing infrastructure
• Provide technical expertise on network and computer hardware/software interconnection
• Participate in Agile ceremonies to deliver high-quality solutions

Skills

Final DoD Secret clearance

SDN

Data Flow Analysis

CCNA/CCNP

TCP/IP

Networking protocols

Agile ceremonies

Tools

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.

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

#LMSpaceSystemsEng

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.