Spacecraft Software Engineer (Entry-Level) - Millennium Space Systems

Job Description
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Spacecraft Software Engineer (Entry Level) - Millennium Space Systems
Millennium Space Systems (MSS), a part of Boeing Defense, Space and Security (BDS) is seeking a Spacecraft Software Engineer (Entry Level) to support the Engineering team in El Segundo, CA!
Job Summary
As a Spacecraft Software Engineer 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.
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
This position's internal job code is Software Engineer - Embedded. Our team is currently hiring for Levels 2-3.
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.
Security Clearance and Export Control Requirements
This position must meet Export Control compliance requirements, therefore a "US Person" as defined by 22 C.F.R. § 120.15 is required. "US Person" includes US Citizen, lawful permanent resident, refugee, or asylee.
Minimum Qualifications

• Bachelor's Degree in Computer Science, Computer Engineering, Electrical Engineering or similar with focus on software development
• 2+ Years of Working Experience
• 3+ years of experience in C and C++ programming
• 2+ years of experience with Linux in an embedded environment and/or baremetal C on a microcontroller
• Ability to work effectively in a dynamic environment with changing needs and requirements
• Ability to work independently and in a team, take initiative, and communicate effectively
• 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

• 5+ years of work 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

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.
Shift:

• This role will be on 1st

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
Please note that the salary information shown below is a general guideline only of what is reasonably expected to be paid for the position. Salaries are based upon candidate experience and qualifications, as well as market and business considerations.

• Level 2: $96,050 - $141,250
• Level 3: $118,150 - $173,750

Applications for this position will be accepted until Feb. 13, 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.
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.