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Software & IT

Ground Software Engineer (Senior)

Millennium Space Systems logoMillennium Space Systems$187,500–$280,000/yrEl Segundo, CAFull timePosted 3w ago
  • US citizenship
  • ITAR / US person
  • TS/SCI clearance
  • Secret clearance

How this pay compares

This posting states $188k–$280k a year. Open software engineer jobs in California post a median of $180k a year, the middle half $155k–$212k, across 449 jobs that state their pay, so this one is above the middle half of what they post.

Software engineers in California: pay by town and employer

About the job

Ground Software Engineer (Senior) - Millennium Space Systems ## Company Millennium Space Systems Millennium Space Systems, a part of Boeing Defense, Space and Security (BDS), is a fast, agile small satellite company focused on national security space. Our missions have direct impact to global security, like missile warning and Earth observation. Our team is curious, bold and innovative.

We take risks, innovate and explore new techniques and technologies. We influence change because we challenge the status quo. And when we watch our satellites launch, we know each one of us made it happen. ## Job Summary As a Senior Ground Software Engineer, you oversee ground software production, development, and integration and test.

Your primary responsibility is furthering the design and development of the MSS Ground Software System. You disposition and adjudicate root cause and corrective actions as they arise. Secondary responsibilities are design focused.

Working closely with the Ground Software Team, technicians, integration and test engineers, and other managers as required, you also lead proposal efforts related to ground software and establish yourself as the Ground Software System Subject Matter Expert. ## Primary Responsibilities - Oversees the design, development, test, and maintenance of ground software throughout the end-to-end lifecycle that meets industry, customer, safety, and regulation standards - Oversees the review, analysis, and translation of customer requirements into initial design of software products - Reviews the development, maintenance, enhancement and optimization of software products and functionalities for systems integrations - Oversees development, documentation and maintenance of architectures, requirements, algorithms, interfaces and designs for software products - Oversees debugging and resolution of issues identified to ensure the reliability and efficiency of software products - Oversees handling of user inquiries, troubleshooting technical issues and user feedback analysis - Oversees research and implementation of current and emerging technologies, tools, frameworks and changes in regulations relevant to software development - Leads development, establishment, monitoring and improvement of software processes, tools and key performance metrics that align projects with organizational goals and industry benchmarks - Reviews planning, execution and documentation of software research and development projects - Consults on software domains, system-specific issues, processes and regulations - Oversees software project management activities and software supplier management functions - Oversees tracking and evaluation of software team and supplier performance to ensure product and process compliance to project plans and industry standards - Other Job Duties as required This position’s internal job code is SoftwareEngr-Systems.

Our team is currently hiring for level 5. This position is expected to be 100% onsite.

The selected candidate will be required to work onsite in El Segundo, CA. ## Basic Qualifications (Required Skills/Experience) - Master's degree in an accredited course of study in engineering, computer science, engineering data science, mathematics, physics or chemistry and 14 or more years' related work experience or an equivalent combination of technical education and experience - 14 or more years’ experience designing and developing software in a production environment - This position requires the ability to obtain a US Security Clearance for which the US Government requires US Citizenship.

A Final U.S. Secret clearance is required post-start ## Preferred Qualifications (Desired Skills/Experience) - Bachelor’s degree in computer science, Computer Engineering, Aerospace Engineering, or a related field - Active U.S.

Top Secret/SCI Security Clearance - Proficiency with containerization and container orchestration practices using Docker, Podman, Helm and Kubernetes - Previous experience with ground systems and mission operations - Extensive experience with Infrastructure-as-Code practices - Experience with CI/CD principles and software forges - Demonstrated experience with Python webserver frameworks (Twisted, Flask, FastAPI) - Experience with client/server networking technologies and relationships such as TCP/UDP, HTTP (REST), protobuf/gRPC and message brokers like Active MQ. - Demonstrated experience with backend development interacting with relational, time-series, and document databases (ex: PostgreSQL, InfluxDB, MongoDB). - Familiarity with GitLab CI/CD and Infrastructure as Code practices - Experience with iterative and agile software development - Comfortable communicating technical details verbally and in writing - Experience with observability technologies, especially Grafana, Loki, Alloy, and Prometheus - Experience with unit testing, integration tests, and end-to-end testing - Proficiency managing software package dependency trees and responding to vulnerability notifications ## Conflict of Interest Successful candidates for this job must satisfy the Company’s Conflict of Interest (COI) assessment process ## Drug Free Workplace Millennium Space Systems, a Boeing Company, is a Drug Free Workplace (DFW) 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. ## Total Rewards At Millennium Space Systems, a Boeing Company, 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.

Millennium Space Systems 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. Pay is based upon candidate experience and qualifications, as well as market and business considerations ## Summary Pay Range - Level 5: $187,500 - $280,000 Millennium is DDTC-registered, ITAR-compliant Company.

This position is located at a facility that requires special access. Applicants MUST be U.S. citizens and eligible for a security clearance. Additionally, applicants must be willing to apply for and maintain a security clearance.

We encourage all interested candidates to apply for any open position for which they feel they are qualified. ​Category = Engineering ## Language Requirements Not Applicable ## Education Bachelor's Degree or Equivalent ## Relocation Relocation assistance is not a negotiable benefit for this position. ## Export Control Requirement 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. ## Safety Sensitive This is not a Safety Sensitive Position. ## Security Clearance This position requires the ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S.

Citizenship. An interim U.S. Secret Clearance Pre-Start and final U.S. Secret Clearance Post-Start is required. ## Visa Sponsorship Employer will not sponsor applicants for employment visa status. ## Contingent Upon Award Program This position is not contingent upon program award ## Shift Shift 1 (United States of America) Stay safe from recruitment fraud!

The only way to apply for a position at Boeing is via our Careers website.

From Millennium Space Systems's job posting, checked 7 Nov 2026. The employer's own page is the final word on requirements and availability.

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About Millennium Space Systems

Builds small satellites for missile warning and tracking, a Boeing company since 2018.

Pay on its listings: 93.9% of its open jobs state an hourly rate

How it pays: Paid as an employee of Millennium Space Systems, under the employment terms each posting states.

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