Senior Systems Engineer

Job#: 3008356 Job Description: Senior Systems Engineer – Defense Systems IntegrationLocation: Huntsville, AL (Redstone Arsenal) Employment Type: Full-Time Clearance Required: Active Secret (Top Secret preferred)Why Join Apex Systems?At Apex Systems, we don’t just fill roles—we build careers. Join a team that’s driving innovation in national defense and shaping the future of integrated missile defense systems. This is your chance to contribute to a high-impact mission supporting the Missile Defense Agency (MDA) and the Defense of Guam (DoG) initiative, one of the nation’s top strategic priorities.About the RoleWe’re seeking a Senior Systems Engineer to provide expert-level systems engineering support to the MDA’s Defense of Guam Program Office. You’ll be at the forefront of technical integration, helping ensure the seamless development, testing, and deployment of cutting-edge missile defense capabilities.This role offers exposure to secure system development, cybersecurity-informed engineering, and collaboration with top-tier defense professionals in a fast-paced, mission-critical environment.Key ResponsibilitiesLead Systems Engineering efforts across Flight Test, Ground Test, and Modeling & Simulation domainsDevelop and maintain SE/CI activities and technical documentationDrive architecture definition, interface allocation, and requirements developmentShape verification strategies and risk management frameworksSupport technical reviews (SRR, PDR, CDR) and performance assessmentsContribute to cybersecurity strategy, configuration/data management, and sustainment planningCollaborate on decision analysis, technical planning, and innovation initiativesDeliver high-impact briefings to senior stakeholders and decision-makers Preferred Qualifications12+ years of relevant systems engineering or technical experience for missile defense related programsBachelor’s degree in STEM (Master’s preferred)Experience with MDA Systems Engineering and DoD acquisition programsProven track record in technical baseline development and cybersecurity-informed engineeringStrong communication skills and ability to lead cross-functional technical teamsFamiliarity with MDA technical review processes and documentation standards What We OfferCompetitive compensation and benefitsOpportunities for advancement and professional developmentA mission-driven culture focused on excellence, innovation, and collaborationDirect impact on national defense and strategic operationsReady to engineer the future of missile defense? Apply now and become part of a team that’s protecting tomorrow—today.EEO Employer Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at  or 844-463-6178. Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click here for more details. Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Apex team member can provide.