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Salary
$146k – $215k per year
Location
In office (El Segundo)
Seniority
Senior · 12+ years exp
Visa
No sponsorship (stated in the posting)
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 20, 2026. First seen by Alion on Oct 8, 2026. SpaceNexus scores A on the Alion truth index.

Overview
Company
Impact
Profile match
SpaceNexus is a space industry intelligence platform run by SpaceNexus LLC that tracks launches, satellites, space stocks, funding rounds, contract awards and news for investors, engineers and analysts. The service, launched in 2026, offers profiles of more than 370 space companies, newsletters, an API, embeddable widgets and a space jobs section that aggregates openings from firms such as Planet and Varda Space Industries. Its job feed therefore lists third-party roles in spacecraft engineering, manufacturing, software, legal and operations rather than positions at SpaceNexus itself.

Spacecraft Mechanical Engineer (Experienced) - 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 an experienced Spacecraft Mechanical Engineer, you will leverage past experience and strong engineering fundamentals to solve our most challenging technical problems in collaboration with other engineers. You will review designs and test plans to validate planning and identify opportunities to reduce cost and risk. Additionally, you will create processes, standards, and engineering tools that are needed and train others in their use. This is an exciting opportunity to drive the development of emerging technologies for future mechanical designs at Millennium.

This position’s internal job code is Mech Sys Design & Anlys Engr. Our team is currently hiring for the Levels 5-6.

Responsibilities

Help set technical direction for the group and beyond

Identify and create essential processes, tools, standards, and design guides to build a knowledge-base and set best-practices

Support Responsible Engineering Authorities (REAs) as needed to solve technical challenges, identify solutions, and develop verification tests

As part of the team’s technical lead engineering (TLE) group, provide technical guidance to programs on an as-needed basis though activities such as attending design reviews and customer meetings, failure review and analysis, and trade study assessment

Audit internal programs and external suppliers to identify industry best practices and opportunities for improvement

Serve as a technical mentor for mid-career mechanical engineers

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

12+ years of technical experience in design and analysis of aerospace hardware

Adept with CAD software such as SolidWorks or similar, and GD&T per ASME Y14.5

Experience with spacecraft environments and testing, including random, sine, and acoustic vibration tests, and TVAC testing

Strong mechanical engineering fundamentals, knowledge of satellite hardware, qualification methods, and first principles understanding of all spacecraft sub-systems

Bachelor of Science degree in Engineering (with a focus on Mechanical, Civil, Aerospace Aeronautical or Material Sciences)

This position requires the ability to obtain a US Security Clearance for which the US Government requires US Citizenship. A final U.S. clearance Post Start is required

Preferred Qualifications

Excellent interpersonal and communication skills, both written and verbal

Experience with any of the following: composites, bonded joints, dampers, additive manufacturing, shock or mechanisms

Master's degree in Mechanical Engineering, Aerospace Engineering, or a related field from an accredited university

Active TS/SCI Clearance

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 5: $146,200 - $215,000

Level 6: $178,500 - $262,500

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 and/or 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. Learn how to protect yourself from recruitment fraud - Recruitment Fraud Warning

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.

EEO is the law

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Right to Work Statement

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