Software Engineer Sr, FBM Mk7

Lockheed Martin

| Littleton, Colorado, United States (On Site) | Full Time | 2 days ago

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Job Summary

Join Lockheed Martin Space's Fleet Ballistic Missile (FBM) Avionics organization as a Software Engineer Sr. This role involves developing flight software for missile systems, specifically designing and developing mission-critical Guidance Navigation and Control (GNC) subsystems. You will be engaged in all phases of the software development life cycle, from requirements and design to coding, testing, and maintenance, contributing to strategic defense initiatives.

Must Have

Develop flight software for missile systems.
Design and develop mission critical GNC subsystems.
Incorporate all phases of the software development life cycle.
Bachelor's degree in Computer Science, Software, or related discipline.
Previous C++ or Python development/test experience.
Active Interim Secret Clearance with ability to obtain TS Clearance.

Good to Have

Experience in processor and microprocessor firmware (non-OS based).
Experience in processor firmware and software (OS based) - software drivers and firmware wrappers.
Understanding of missile or satellite software systems.

Perks & Benefits

Medical, Dental, Vision coverage
Life Insurance
Short-Term Disability
Long-Term Disability
401(k) match and company contributions
Flexible Spending Accounts
Employee Assistance Program (EAP)
Education Assistance
Parental Leave (Maternity and Paternity Leave)
Paid Time Off (including holidays, jury duty, military obligations)
Flexible work schedules (Flex-time)
9x80 every other Friday off schedule
Professional Development (mentoring, internal & external educational programs, networking, skills enhancement and career-building programs)

Job Description

Job Responsibilities

Job ID: 699685BR Date posted: Jan. 03, 2026

Description:Take your career to a new level and work at an extraordinary company in Littleton CO (opens in new window)

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.

For over 60 years, the Fleet Ballistic Missile (FBM) team has supported the Navy’s mission to provide affordable and credible strategic defense. We offer unique career opportunities and challenges on a program with a rich history and exciting future. We help keep this nation and our allies secure. The FBM Program is experiencing significant growth and we need your expertise to deliver amazing new technologies to our customers while maintaining the technical requirements of the strategic deterrence.

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What does this role look like?

For this role, you will be joining the Fleet Ballistic Missile (FBM) Avionics organization committed to developing flight software for the missile system. They will join a team of Guidance Navigation and Control (GNC) and software engineers that designs and develops mission critical GNC subsystems for the FBM program. The duties for the position will incorporate all phases of the software development life cycle -- requirements, design, code, test, and maintenance.

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#LI-CS1

Basic Qualifications:

• Bachelor's degree in Computer Science, Software, or related discipline or equivalent years of experience.

• Previous C++ or python development/test experience

• Active Interim Secret Clearance with ability to obtain TS Clearance

Desired Skills:

• Experience in processor and microprocessor firmware (non-OS based).

• Experience in processor firmware and software (OS based) - software drivers and firmware wrappers.

• Understanding of missile or satellite software systems.

• Strong problem solving and troubleshooting skills.

• Excellent team orientation.

• Excellent written and verbal communication skills, interpersonal skills with management and peers.

#LMSpaceSoftwareEng

Security Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration.

Clearance Level: Top 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: 9x80 every other Friday off

Pay 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 $93,200 - $164,450. 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.

Join us at Lockheed Martin, where your mission is ours. Our customers tackle the hardest missions. Those that demand extraordinary amounts of courage, resilience and precision. They’re dangerous. Critical. Sometimes they even provide an opportunity to change the world and save lives. Those are the missions we care about.

As a leading technology innovation company, Lockheed Martin’s vast team works with partners around the world to bring proven performance to our customers’ toughest challenges. Lockheed Martin has employees based in many states throughout the U.S., and Internationally, with business locations in many nations and territories.

Experience Level: Experienced Professional

Business Unit: SPACE

Relocation Available: Possible

Career Area: Software Engineering

Type: Full-Time

Shift: First

About

At Lockheed Martin, we apply our passion for purposeful innovation to keep people safe and solve the world's most complex challenges.

Pioneering Defense Technology: From aerospace to outer space to cyber space, you can innovate mission solutions alongside the best minds in the business.

United By Culture: Excellence, integrity, and collaboration define us. We accelerate change and embrace one another’s perspectives to win for our customers.

Real Impact, Real Growth: Grow your career and skills for life. Our wide array of opportunities and technology-driven learning programs enable your development and agility.

Your Health, Your Wealth, Your Life: Competitive pay, comprehensive benefits and flexible schedules designed so you thrive — at work and beyond.

Empowered to Be Your Best: Use your strengths to make a difference in the lives of one another, our customers, our communities, and our planet.

Here, the possibilities are endless because we offer:

Flexible Schedules, dependent on role
Levels: Student, Entry, Mid, Senior, Management
Locations: Nationwide & OCONUS Positions

Qualifications

See what it takes to be a successful Lockheed Martin employee.

Collaborative

There is no innovation without imagination. You bring new, different and exciting ideas to the table every day. You are committed to the success of your team.

Curious

The ability to explore and drive new ideas. You think innovatively to come up with creative solutions to complex challenges.

Goal-oriented

From planning and organizing to decision making, goal orientation produces impactful results. You set goals and strive to make things happen quickly and efficiently.