Senior Software Systems Engineer

Company: Boeing
Location: Saint Louis
Posted on: March 23, 2026

Job Description:

Job Description Job Description At Boeing, we innovate and collaborate to make the world a better place. We’re committed to fostering an environment for every teammate that’s welcoming, respectful and inclusive, with great opportunity for professional growth. Find your future with us. Boeing Defense, Space & Security (BDS) is seeking a Senior Software Systems Engineer to join our team in one of the listed locations. We are seeking Systems Engineers with Demonstrated ability to apply systems engineering principles in modern software environments, with strong understanding of DevSecOps pipelines, CI/CD practices, and cloud-native architectures. Candidates should be comfortable working across disciplines to integrate hardware, software, and mission systems in secure environments, collaborating closely with developers and test engineers to validate end-to-end functionality. Experience with containerized applications, automated build and test processes, and infrastructure as code is essential to ensuring system performance, security, and mission assurance. The integration and test team will lead system-level integration, verification, and acceptance test activities to ensure software systems meet performance, reliability, and interoperability requirements in an operational environment. Position Responsibilities Review, develop, document, and maintain system requirements and traceability across the lifecycle. Define test strategies, plans, procedures, and acceptance criteria for component, integration, and system-level testing. Design and execute verification & validation activities (functional, interface, performance, reliability, regression). Analyze test results, perform root cause analyses, and recommend corrective actions. Collaborate across engineering disciplines, working closely with software developers, system architects, and test engineers to validate end-to-end functionality and mission effectiveness. Lead integration of hardware, software, and mission systems in secure DoD environments, ensuring interoperability, performance, and mission assurance. Apply modern DevSecOps practices—including CI/CD pipelines, automated testing, containerized deployments, and infrastructure as code—to streamline integration and test activities. Stand up, configure, and maintain secure test environments leveraging cloud-native and virtualized resources (e.g., AWS GovCloud, Azure Government, or on-premise equivalents). Use model-based systems engineering (MBSE) and requirements management tools to support design, analysis, and traceability. Contribute to risk, issue, and opportunity management; assess and report technical readiness and critical path impacts. Drive continuous improvement of integration and test processes, incorporating automation, metrics, and lessons learned to increase efficiency and reliability. Document integration results and test findings for design reviews, readiness assessments, and formal customer deliverables. Mentor junior engineers; at higher levels, provide technical leadership across projects and broader mentoring responsibilities. Travel may be required up to 20% of the time; Domestically depending on business needs. This position requires an active U.S. Top Secret Security Clearance (U.S. Citizenship Required). (A U.S. Security Clearance that has been active in the past 24 months is considered active) Basic Qualifications (Required Skills/Experience) Bachelor of Science degree from an accredited course of study in engineering, engineering technology (includes manufacturing engineering technology), chemistry, physics, mathematics, data science, or computer science 14 years related work experience or an equivalent combination of technical education and experience Strong systems thinking, analytical and problem-solving skills Practical experience with requirements decomposition, requirements tracing and configuration management. Experience writing test plans and procedures and executing system-level integration and verification. Familiar with standard engineering tools such as requirements management (DOORS or similar), MBSE (MSOSA/Cameo or similar), test management, and common collaboration tools (Jira, Confluence, Git). Proficient with one or more scripting or programming languages (e.g., Python, Bash, Matlab) for test automation and data analysis. Preferred Qualifications (Desired Skills/Experience) Advanced degree (MS/PhD) in Systems Engineering or related field. Experience with mission systems, avionics, command & control architectures, embedded systems, sensor systems, or related defense/space programs. Prior work on software-in-the-loop, hardware-in-the-loop, flight test, or distributed system integration. Knowledge of certification and compliance frameworks relevant to the program (FAA, DoD, NASA, etc.). Experience with cloud, container, and CI/CD test infrastructure (Docker/Kubernetes, AWS). Experience with performance and reliability testing, and statistical test methods (DOE). Conflict of Interest Successful candidates for this job must satisfy the Company’s Conflict of Interest (COI) assessment process. Drug Free Workplace Boeing is a Drug Free Workplace where post offer applicants and employees are subject to testing for marijuana, cocaine, opioids, amphetamines, PCP, and alcohol when criteria is met as outlined in our policies. Employee Referral Referral to this job is eligible for bonus to qualifying candidates. Total Rewards At Boeing, we strive to deliver a Total Rewards package that will attract, engage and retain the top talent. Elements of the Total Rewards package include competitive base pay and variable compensation opportunities. The Boeing Company also provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work. The specific programs and options available to any given employee may vary depending on eligibility factors such as geographic location, date of hire, and the applicability of collective bargaining agreements. The Boeing 401(k) helps you save for your future, with contributions from Boeing that can help you grow your retirement savings. Our best-in-class retirement benefit features: Best in class 401(k) plan: we'll match your contributions dollar for dollar, up to 10% of eligible pay with Immediate 100% vesting Student Loan Match: The Boeing 401(k) Student Loan Match allows eligible enrolled U.S. employees to have their qualified student loan debt payments counted, along with any match-eligible contributions they make, for purposes of determining the Company Match to employees' Boeing 401(k) accounts. Pay is based upon candidate experience and qualifications, as well as market and business considerations. Summary pay range: $164,900 – $223,100 Applications for this position will be accepted until Mar. 25, 2026 Export Control Requirements: This position must meet U.S. export control compliance requirements. To meet U.S. export control compliance requirements, a “U.S. Person” as defined by 22 C.F.R. §120.62 is required. “U.S. Person” includes U.S. Citizen, U.S. National, lawful permanent resident, refugee, or asylee. Export Control Details: US based job, US Person required Education Bachelor's Degree or Equivalent Required Relocation This position offers relocation based on candidate eligibility. Security Clearance This position requires an active U.S. Top Secret Security Clearance (U.S. Citizenship Required). (A U.S. Security Clearance that has been active in the past 24 months is considered active) Visa Sponsorship Employer will not sponsor applicants for employment visa status. Shift This position is for 1st shift Equal Opportunity Employer: Boeing is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, physical or mental disability, genetic factors, military/veteran status or other characteristics protected by law.

Keywords: Boeing, Florissant , Senior Software Systems Engineer, Engineering , Saint Louis, Missouri