**Description:** You will be the Guidance, Navigation, & Controls Engineer Sr for our Integrated Air and Missile Defense \(IAMD\) team\. Our team is responsible for designing and optimizing missile guidance and fire control systems to enhance system performance\. **What You Will Be Doing** As the Guidance, Navigation, & Controls Engineer Sr, you will be responsible for developing and optimizing GNC algorithms, designing missile guidance and fire control algorithms, and conducting performance assessments and analysis to drive system improvement\. Your responsibilities will include: •Designing and optimizing GNC algorithms for system performance improvement •Developing cost functions and employing optimization methods •Conducting trade studies and performance assessments •Preparing and presenting written and oral communications of design and analysis efforts •Documenting simulation code in a classified computing environment **Why Join Us** We are committed to supporting your work\-life balance and overall well\-being, offering flexible scheduling options Learn more about Lockheed Martin’s comprehensive benefits package here\. **Further Information About This Opportunity:** This position is in Littleton\. Discover more about our Littleton, Colorado location\. MUST BE A U\.S\. CITIZEN \- This position is located at a facility that requires special access\. The selected candidate must have a current secret clearance\. **Basic Qualifications:** •Must have experience with dynamic systems including controls feedback and regulation, statistical processes\. •Skills to analyze large data sets and experience with numerical optimization methods\. •Ability to effectively communicate orally and in written form is necessary\. •Prior experience with computer programming, to include creating programs from scratch as well as diligently researching very large pre\-existing system simulations to be able to modify and add to those simulation codes\. •Familiarity with Unix/Linux and shell scripting is desired\. •Must have a current Secret clearance **Desired Skills:** •Experience with the C\+\+ and Fortran programming languages\. •Experience with Python and application of optimization techniques\. •Midcourse guidance law, Kalman filtering, numerical methods, and 6\-DOF simulation experience is a significant plus\. **Security Clearance Statement:** This position requires a government security clearance, you must be a US Citizen for consideration\. **Clearance Level:** Secret **Other Important Information You Should Know** **Expression 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:** Onsite Full\-time: The work associated with this position will be performed onsite at a designated Lockheed Martin facility\. **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 week **Pay Rate:** The annual base salary range for this position in California and New York \(excluding most major metropolitan areas\), Colorado, Hawaii, Illinois, Maryland, Minnesota, Washington or Washington DC is $93,400 \- $179,000\. 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 Professional **Business Unit:** MISSILES AND FIRE CONTROL **Relocation Available:** Possible **Career Area:** Guidance, Navigation and Control **Type:** Full\-Time **Shift:** First