System Integration and Test Engineer

Reference: 734831BRPosted: 2026-07-13Location: Littleton, ColoradoSalary: $89,300 - $157,550Clearance: Top SecretCompany: Lockheed MartinDescription:WHO WE ARELockheed Martin (LM) Rotary and Mission Systems (RMS) is looking for engineering professionals to work on the Trusted Security Solutions (TSS) program to engineer Cross-Domain Solution (CDS) products. This position is for a Systems Integration/Test Engineer on the Radiant Mercury product within the TSS program. Radiant Mercury is the US Navy's premier CDS product and LM has been the prime contractor for over 20 years.WHAT WE’RE DOINGAt LM we engineer innovative solutions to deliver resilient systems, products, and services across evolving cyber threats. Strong, resiliency-focused engineering is essential to protecting customer platform/weapon systems from increasingly sophisticated threats. The Radiant Mercury program delivers secure cross-domain solutions to our customers, enabling the controlled transfer of information between different security domains. This role is critical in safeguarding the confidentiality, integrity, and availability of these mission-essential systems. WHO YOU AREThe Radiant Mercury (RM) program is looking for engineering professionals to work on Cross-Domain Solution (CDS) products that protect and defend the information flow of critical and time sensitive data on many military applications and networks. • The ideal candidate will have a strong background working on Software development programs, a willingness to learn new technologies, and be able to support all phases of the CDS development.• You should be a well-rounded engineer that has experience with software deployment, networking, system administration and hardware.. • You will collaborate closely with systems engineers, systems integration and test engineers as well as software engineers to coordinate various types of tasks.• You should expect to learn necessary skills through hands on experiences and should work well in a team.• If selected, you will be subject to a government security investigation and must meet eligibility requirements for access to classified information. THE WORKThe primary work location is at the Deer Creek Facility (DCF) in Littleton, Colorado with limited ability to work remotely. The candidate will primarily be required to come into the office to conduct their work. Responsibilities for the role include:• Design, develop, and maintain formal Test Procedures to verify requirements are met by the software. Create new, manually executed procedures for new software features. Update existing test procedures when the software changes. Identify efficiency improvements. Automate when possible.• Maintain test support artifacts. Create/update test packages (rpms) required by Test Procedures, to include test messages, test configurations, operating system configuration, test setup, etc. Configuration control items in Git.•Maintain requirements baseline and compliance in DOORS - Update requirements baseline to align with periodic Government releases - Maintain functional requirements (add/delete/update) - Maintain compliance status and test procedure linkage• Perform integration testing to informally test new features or verify bug resolution. Work with the software team to write bugs and resolve issues.• Work in an Agile development environment. Participate in software feature design reviews and planning meetings. Attend daily scrum meetings.WHY JOIN US• Our flexible schedules, competitive pay, comprehensive benefits, and focus on work/life balance enable you to live a healthy, fulfilling life at and outside of work.BENEFITS• Lockheed Martin offers a comprehensive benefits package including medical, dental, vision, 401(k), and paid time off.• Learn more about Lockheed Martin’s competitive and comprehensive benefits package.LOCATION• Check out our beautiful facility online, search ‘Lockheed Martin Deer Creek Facility in Littleton CO’.Basic Qualifications:• Bachelor's degree from an accredited college with 3+ years of professional experience in a related discipline, a Master's degree from an accredited college with 1+ years of professional experience in a related discipline, or equivalent experience/combined education• Demonstrated SW Test engineering experience• Demonstrated experience writing test procedures• Experience using RedHat Enterprise Linux via Command Line Interface (CLI)• Ability to learn necessary skills through hands on experience• Excellent verbal and written communication skills• Strong analytical and problem-solving skills with attention to detail; Quick thinker, fast learner/Proactive, problem solver, creative, critical thinking skills.• Ability to obtain a Top Secret clearanceDesired Skills:• Cross Domain Solution domain knowledge • Networking knowledge• RedHat Enterprise Linux System Administration• Shell scripting/ Python experience• Security Enhanced Linux Knowledge• Experience with defense industry cybersecurity requirements baselines (Risk Management Framework, Raise the Bar)• Experience with Test Automation• Hands on software design and software/system architecture• Strong understanding of the systems engineering lifecycle, including principles, processes, and methodologiesSecurity Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration.Clearance Level: Top SecretOther Important Information You Should KnowExpression of Interest: 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: Part-time Remote Telework: The employee selected for this position will work part of their work schedule remotely and part of their work schedule at a designated Lockheed Martin facility. The specific weekly schedule will be discussed during the hiring process.Work Schedules: 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.Schedule for this Position: 4x10 hour day, 3 days off per weekPay Rate: The annual base salary range for this position in California, Massachusetts, and New York (excluding most major metropolitan areas), Colorado, Hawaii, Illinois, Maryland, Minnesota, New Jersey, Vermont, Washington or Washington DC is $89,300 - $157,550. 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.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.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.Experience Level: Experienced ProfessionalBusiness Unit: RMSRelocation Available: PossibleCareer Area: Test EngineeringType: Full-TimeShift: First