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Software Systems Engineer Sr. Staff jobs in United States
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Lockheed Martin · 3 hours ago

Software Systems Engineer Sr. Staff

Lockheed Martin is a leading aerospace and defense company focused on space technology. The Software Systems Engineer will support the software engineering lifecycle, ensuring the development and integration of robust software solutions for space applications.
AerospaceCyber SecurityMachinery ManufacturingMilitaryNational SecurityRemote SensingSecurity
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Growth Opportunities
badNo H1BnoteSecurity Clearance RequirednoteU.S. Citizen Onlynote

Responsibilities

Support the software engineering lifecycle following the program Software Development Plan (SDP) to include requirements analysis, object oriented analysis & design, code & unit test, integration, and support to formal test/delivery
Develop and automate unit, integration, and hardware‑in‑the‑loop (HIL) test procedures
Writing and managing software requirements
Capture, trace, and manage requirements using tools like IBM DOORS
Work in cross‑functional teams (hardware, firmware, mechanical, mission specialists)
Strong written communication for formal documents (requirements, test plans, reports) and oral communication for briefings and design review

Qualification

C/C++ proficiencyReal-time/embedded systemsSoftware requirements managementUnit testing automationIBM DOORSModel-based systems engineeringCybersecurity testingCross-functional teamworkWritten communicationOral communication

Required

Proficiency in C/C++ for real‑time/embedded environments
Ability to develop and automate unit, integration, and hardware‑in‑the‑loop (HIL) test procedures
Direct experience writing and managing software requirements
Ability to capture, trace, and manage requirements using tools like IBM DOORS
Ability to work in cross‑functional teams (hardware, firmware, mechanical, mission specialists)
Strong written communication for formal documents (requirements, test plans, reports) and oral communication for briefings and design review
Must be a US Citizen; this position will require Final Secret government security clearance prior to starting

Preferred

Exposure to satellite payload or missile guidance & control subsystems
Familiarity with model‑based systems engineering (MBSE) tools such as Cameo
Experience with cybersecurity testing (e.g., FIPS‑validated libraries, secure boot)

Benefits

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
Holidays

Company

Lockheed Martin

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Lockheed Martin is a global security and aerospace company that specializes in advanced technology systems, products, and services. It is a sub-organization of Lockheed Martin.

Funding

Current Stage
Public Company
Total Funding
$6.06B
Key Investors
Air Force Research Laboratory
2025-12-05Post Ipo Debt· $3B
2025-08-28Post Ipo Debt· $3B
2023-11-13Grant· $33.7M

Leadership Team

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Jim Taiclet
Chairman, President & CEO
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Craig Martell
Chief Technology Officer
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Company data provided by crunchbase