Spacecraft Mechanical Engineer (Experienced) - Millennium Space Systems

The Boeing Company; El Segundo (CA); On-site; USD 146,000 - 263,000; Full time

Job summary

Millennium Space Systems, a Boeing Company, is seeking an experienced Spacecraft Mechanical Engineer to lead design reviews, validate test plans, and drive cost and risk reduction through robust processes and engineering tools.

This 100% onsite position requires strong CAD and vibration testing experience, with mentorship responsibilities and collaboration across programs to advance future mechanical designs.

Qualifications

• Bachelor of Science in Engineering with focus on Mechanical, Aerospace, or related field.
• Strong CAD experience with SolidWorks and GD&T per ASME Y14.5.
• Experience with spacecraft environments and testing (random, sine, acoustic, TVAC).
• Ability to obtain US security clearance and US citizenship required.

Responsibilities

• Set technical direction for the group and drive best practices.
• Create processes, tools, standards, and design guides; build knowledge base.
• Support REAs to solve challenges and develop verification tests; attend reviews.

Skills

SolidWorks

GD&T Y14.5

Spacecraft testing

Mechanical fundamentals

Education

BS in Engineering (Mechanical/Aerospace)

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.

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

• 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.

Category = Engineering

Applications for this position will be accepted until Sept. 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

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 or other characteristics protected by law.