Senior Spacecraft Harness Engineer - 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 (MSS), 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 Senior Spacecraft Harness Engineer (Level 4 or Level 5) to join the MSS team in El Segundo, CA!
In this role, you will be working in missions with continuous changing requirements and expectations, typical of research & development (R&D) environments, and support transitioning missions into high-rate production.
We are looking for talented individuals who can manage complex interfaces and are willing to innovate. Talented individuals with strong foundations in cable & harness design and/or printed wiring board design, such as rigid printed circuit board or flex-based circuit board for our interconnect solutions. Our engineers possess a strong foundation and knowledge of space vehicle, spacecraft, and/or payload logical architecture. From proposal creation to designing schematics to working hands on in the harness lab to watching a satellite being pushed onto a truck and taken to the launch site, you'll have a hand in it all.
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:

• Development & analysis of EWIS architectures for multiple programs and bus configurations from mission and scientific payloads to experimental LEO small satellites to MEO constellations and GEO vehicles.
• Generation of subsystem or unit-to-unit electrical block diagrams.
• Definition and documentation of signal connectivity through cross functional coordination with system, subsystem, and product engineers for spacecraft harness or printed wiring board design.
• Selection of harness components and hardware, such connectors, backshells, and wire/cable based on applicable satellite mission requirements and industry standards.
• Performance of voltage drop analysis, power current derating, and capacitance circuit analysis for harness and printed wiring boards.
• Development and analysis of PCB designs determination board form factor, schematic capture, board stack determination, component placement and trace routing.
• Generation of rigid or rigid-flex PCB, PCB Assembly Drawings, fabrication & assembly output files (Geber, ODB++, etc.)
• Generation harness schematic diagrams, wire diagrams, and wire harness assembly drawings.
• Preparation and generation of harness acceptance testing procedures including the development of harness test scripts for cable testers.
• Participation of critical programmatic milestones (Preliminary Design Reviews, Critical Design Reviews, etc.) including the preparation of data packages, conduction of design reviews, and closure of any liens from the Milestone Decision Authority (MDA).
• Support assembly and testing of FlatSat and flight harnesses while reporting on cost and schedule performance.
• Capture of as-built, made on assembly mockup harness builds to produce 2D/3D formboards.
• Support with the creation, maintenance, or update of harness design, assembly, and test standards and command media.
• Support in proposals and business development efforts as the responsible engineering authority (REA).
• Management of external suppliers and subcontractors for harness and printed circuit board delivery.

This position is expected to be 100% onsite. The selected candidate will be required to work onsite at one of the listed location options.
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/SCI Clearance Post-Start is required.
Basic Qualifications (Required Skills/Experience):

• Bachelor's Degree or higher from an accredited course of study in engineering, computer science, mathematics or physics
• 3+ year of experience in wire harness design, wire harness installation or equipment installation
• Experience in a role that required excellent communication, collaboration, and interpersonal skills
• Experience interfacing with all engineering disciplines and be able to work in a team environment and work independently as required
• 3+ years of experience with engineering release processes, engineering requirements, and document moderation
• Ability to help develop, mentor and coach less experienced staff

Preferred Qualifications (Desired Skills/Experience):

• Active DoD TS or TS/SCI Clearance.
• Experience performing aircraft and/or spacecraft bench or flight line operational checkout, trouble-shooting, adjustment and repair of any electrical or electronic system
• Experience with the successful design and delivery of spacecraft or aircraft wire harnesses and/or printed circuit boards. Rigid-flex PCB design preferred.
• Experience with early life-cycle satellite engineering activities, spacecraft integration and test, and launch operations.
• 3+ years of experience with Earned Value Management Systems (EVMS).
• Experience with Mentor Graphics Capital tool
• Experience using Electrical Design Automation (EDA) Tools such as (e.g. OrCAD, Mentor Graphics, Altium, PSPICE) to perform schematic capture, PCB design/layout, and circuit simulation
• Knowledge of harness design standards and specifications for spaceflight applications (MIL-HDBK-83575, MIL-HDBK-863, SAE AS50881, etc.).
• Knowledge of PCB design standard and specifications (IPC-2221, 2222, 2223, IPC-A-600, etc.)
• Knowledge of military standards of connectors, wires, and contacts for aerospace applications (MIL-DTL-38999, MIL-DTL-24308, MIL-DTL-83513, NEMA-WC27500, SAE-AS22759, etc.)
• Level 4 & 5: 5 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.
Travel: Occasional travel may be required
Shift: 1st Shift
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 & Pay Transparency:
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 4: $146,200 - $197,800
Level 5: $176,800 - $239,200
Applications for this position will be accepted until March 25, 2026
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 Mar. 26, 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. Top Secret/SCI 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.