Software Engineer Sr - E3

Posted 10 Hours Ago
Be an Early Applicant
Orlando, FL, USA
In-Office
98K-182K Annually
Senior level
Aerospace • Security • Cybersecurity • Industrial
The Role
Develops and maintains C/C++ software for real-time and safety-critical aerospace training and simulation systems. Responsibilities include requirements analysis, architecture, coding, testing, debugging, documentation, integration, verification, and production handoff. The role uses Git/GitLab, scripting, CI/CD, and software development lifecycle practices while supporting mission readiness for F-35 training systems.
Summary Generated by Built In
Standard Job Description

What We're Doing
Do you want to be part of the team that provides training systems for the world's most advanced aircraft – F-35 Joint Strike Fighter? Do you enjoy a dynamic, fast-paced work environment?
Join Lockheed Martin's dynamic team working on the cutting edge of aerospace technology. We provide training systems for the world's most advanced aircraft, including the F-35 Joint Strike Fighter.
At Training, Logistics and Simulation (TLS) Integrated Engineering, we are dedicated to transforming sustainment and training solutions to ensure our customers' mission success. Our focus lies in fostering a culture of speed, agility, affordability, and innovation through disruptive technologies. We are committed to building a talented team that can reimagine the future of mission readiness.
The Work
As a key member of our Software Engineering team, you will:
• Plan, conduct, and coordinate software development activities.
• Design, develop, document, test, and debug software that solves business/mission problems using logical and mathematical methods.
• Apply established standards, processes, procedures, and tools throughout the development life cycle.
• Translate high level requirements into detailed software specifications and design documents.
• Design, code, and unit test C/C++ components for real time or safety critical applications.
• Develop and execute test plans (unit, integration, system verification) and record results.
• Participate in all SDLC phases: requirements analysis, architecture/design, implementation, integration, verification, and hand off to production.
• Identify and correct program errors; create clear operating instructions and comprehensive development documentation.
• Analyze system capabilities to clarify program intent, output requirements, input data acquisition, programming techniques, and controls.
• Ensure all software deliverables meet required quality and compliance standards.

 Proficient in AI prompting as it applies to this position and practice 
This position requires a candidate who is a U.S. Citizen and has the ability to obtain an Interim Secret security clearance prior to start. The role is located at a facility that requires special access.
Why Join Us
Join us if you are passionate about saving lives through mission readiness. Be a part of a team that values speed, agility, affordability, and disruptive technologies. If you are excited about transforming sustainment and training solutions and working with a talented team to reimagine the future, we invite you to contribute your leadership skills and technical expertise to our mission.


Plans, conducts, and coordinates software development activities. Designs, develops, documents, tests, and debugs software that contains logical and mathematical solutions to business/mission problems or questions in computer language for solutions by means of data processing equipment. Applies the appropriate standards, processes, procedures, and tools throughout the development life cycle. Applies knowledge of computer hardware and software, subject matter to be programmed in business/mission applications, information processing techniques used, and information gathered from system users to develop software. Corrects program errors, prepares operating instructions, compiles documentation of program development, and analyzes system capabilities to resolve questions of program intent, output requirements, input data acquisition, programming techniques, and controls. Ensures software standards are met.

Basic Qualifications

• Bachelor’s degree and 3 or more years of software engineering experience.
• Experience with C/C++ for real time or safety critical systems.
• Proficiency with scripting languages such as Bash, Python, or Perl.
• Proven experience using Git (branching, merging, pull request workflow) and GitLab for source code management, pipeline creation, and CI/CD of builds and automated tests.
• Ability to produce detailed specifications, design documents, and test documentation.
• Familiarity with version control best practices and continuous integration/continuous delivery processes.
U.S Citizenship Required


Desired Skills

• Experience with aerodynamics, air launched weaponry, missile kinematics
• Development or integration of simulation software (e.g., flight dynamics, sensor models) with emphasis on C++ code and scripted simulation environments
• Experience with linux environments (specifically SLES 11+)
• Experience in Kubernetes / Docker
• Experience in gRPC
• Experience integrating or interfacing with black box software
• Experience in UML / SysML / MBSE
• Understanding of agile Scrum, SaFE
• Demonstrated capability to debug complex software architecture
• Active Secret Security clearance or higher.

Pay Information

Full-Time Salary Range: $98100.00 - $182100.00

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.

Skills Required

  • Bachelor's degree
  • Three or more years of software engineering experience
  • Experience with C/C++ for real-time or safety-critical systems
  • Proficiency with scripting languages such as Bash, Python, or Perl
  • Experience using Git, including branching, merging, and pull request workflows
  • Experience using GitLab for source code management, pipeline creation, and CI/CD of builds and automated tests
  • Ability to produce detailed specifications, design documents, and test documentation
  • Familiarity with version control best practices and continuous integration and continuous delivery processes
  • U.S. citizenship
  • Ability to obtain an Interim Secret security clearance prior to start
  • Proficiency in AI prompting as applied to the position
  • Experience with aerodynamics, air-launched weaponry, or missile kinematics
  • Experience developing or integrating simulation software, including flight dynamics or sensor models
  • Experience with Linux environments, specifically SLES 11 or later
  • Experience with Kubernetes and Docker
  • Experience with gRPC
  • Experience integrating or interfacing with black-box software
  • Experience with UML, SysML, or MBSE
  • Understanding of Agile Scrum and SAFe
  • Demonstrated ability to debug complex software architectures
  • Active Secret security clearance or higher

Lockheed Martin Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Lockheed Martin and has not been reviewed or approved by Lockheed Martin.

  • Retirement Support — Retirement benefits are described as a standout element, with a strong 401(k) program and options like an employee stock purchase plan. Feedback suggests these features meaningfully enhance total compensation and long‑term financial security.
  • Healthcare Strength — Healthcare coverage is portrayed as comprehensive from day one, with multiple plan options, mental health resources, and virtual care. Wellness supports such as on‑site services and preventive programs are also highlighted.
  • Flexible Benefits — Work arrangements often include compressed schedules and telework, contributing to a favorable work‑life balance. Feedback suggests this flexibility is a key reason many view the overall package positively.

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The Company
HQ: Bethesda, MD
108,588 Employees
Year Founded: 1912

What We Do

Customer Focus, Innovation and Purpose are Built Into Everything We Do. Lockheed Martin. Your Mission is Ours ™. Headquartered in Bethesda, Maryland, Lockheed Martin is a global security and aerospace company principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services.

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