Spacecraft Software Engineer (Associate or Mid-Level)- Millennium Space Systems

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. 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. Millennium Space Systems (MSS) has an exciting opportunity for a Spacecraft Software Engineer (Level 2 or Level 3) to join our team in El Segundo, CA! Job Summary: As a Spacecraft Software Engineer (Associate or Mid-Level) at Millennium Space Systems, you’ll create the software that makes our satellites function in orbit. Your code will run on our custom avionics, process signals from sensors like our star trackers, and command actuators like the propulsion system. Your software may also interface with custom payloads and perform high-level autonomy functions to ensure our spacecraft accomplish their missions. We are looking for software engineers that can lead a small team developing the for a satellite, work with other teams to determine what the software needs to do, and then write (and test!) robust embedded C/C++ to meet those requirements. And when that code is running in space, you’ll continue to support mission operations with software updates and enhancements. This position's internal job code is Software Engineer - Embedded. Our team is currently hiring for Levels 2-3. Strong communication and organizational skills are critical to success in this position, along with the ability to build strong relationships, collaborate in a cross-functional environment, and utilize problem-solving skills to proactively identify and manage risks and opportunities. Position Responsibilities: Work collaboratively with hardware, control and system engineers to define and develop software requirements, architectures and designs suited for fault-tolerant spacecraft Rapidly prototype novel software solutions to prove out the architecture/design concepts, quantify technical risk, and create new capabilities Implement designs in C/C++, integrate software components, create and run unit tests, validate on Hardware-in-the-Loop and release real-time embedded solutions Assist with system verification and qualification, assessing the outputs and documenting the results to ensure software products that meet system requirements and mission-critical standards Be responsible for all phases of software development and problem resolution from program inception to post-launch support Work with hardware engineers to verify hardware-hardware and hardware-software interfaces Break down the software development needed for a program into smaller discrete tasks that can be given to others to implement and monitor their progress Perform code reviews to ensure the software being developed is functionally correct, efficient, and meets our coding standards This position is expected to be 100% onsite. The selected candidate will be required to work onsite at one of the listed location options. Basic Qualifications (Required Skills/Experience): 1+ years’ experience in software or hardware engineering, requirements, design, development, test, and working with software and hardware 1+ years of experience working with Linux 1+ years of experience in C and C++ programming Experienced in embedded environment and/or bare metal C on a microcontroller This position requires the ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S. Citizenship. An interim and/or final U.S. Top Secret Clearance Post-Start is required. Preferred Qualifications (Desired Skills/Experience): Bachelor's degree or higher in Electrical Engineering, Computer Engineering or Computer Science 3+ years of experience in C and C++ programming Experience with concurrent HW/SW development Experience with iterative and/or agile development processes Experience with serial data protocols (HDLC, I2C, SPI) Experience in Python programming Experience in Verilog and FPGAs Experience with git, JIRA, confluence Knowledge of satellite systems and components Level 2: 1 or more years' related work experience or an equivalent combination of education and experience Level 3: 3 or more years' related work experience or an equivalent combination of education and experience Relocation assistance is not a negotiable benefit for this position. Candidates must live in the immediate area or relocate at their own expense. Shift: This position is for 1st shift. Occasionally, second shift coverage (3:30pm–1:00am) is needed to support vehicle test and integration operations, with this supporting effort distributed across the team. 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. 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 2: $106,250-$143,750 Level 3: $135,150-$182,850 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. Applications for this position will be accepted until Jun. 17, 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 Relocation assistance is not a negotiable benefit for this 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 and/or final U.S. Secret Clearance Post-Start is required. 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