Principal Engineer - EWIS

Company: 804 Technology
Location: Seattle
Posted on: February 20, 2026

Job Description:

Job Description Job Description Principal Engineer - EWIS Seeking an experienced Principal Engineer – EWIS that will perform design, integration, test and certification tasks of the Electrical Wiring Interconnection System across multiple aerospace programs. This role requires the significant exercise of independent discretion and judgment in matters of significance. In This Role You Will: EWIS Design and Certification Activities , including but not limited to: Perform as a technical authority in Electrical Wiring Interconnect System (EWIS) design and certification work. Create new designs, modifications, and rework for all types of wire installation across multiple programs. Interface with the cognizant engineers responsible for the interfacing systems to ensure the EWIS design satisfies system requirements, system safety and certification needs. Interface with customers (internal and external) to ensure the EWIS design satisfies all requirements. Interface with Supply Chain to ensure the required materials, components and parts are procured to support EWIS manufacturing and installations. Interface with the Manufacturing Engineers to ensure the appropriate installation information and Return-To-Service activities are captured in the work instructions. Create, modify, and maintain the wiring diagrams, installation drawings, cable/wire assembly drawings, formboards and wire data lists across all programs. Create wire harness routing models and assemblies to integrate the EWIS design into the Digital Mock-UP (DMU). Select appropriate electrical components such as wire, connectors, backshells, shield coverage, strain reliefs, and related wiring components to ensure the EWIS design meets the customer requirements in a certifiable manner. Create and maintain the 2D and 3D CAD Library parts. Participate in and host Systems Design Reviews. Coordinate with certification authorities and DERs. Review and maintain a working knowledge of certification guidance material (AC, TSOs, FAR, CS, etc.) to achieve airworthiness and support certification efforts. Create, review and approve certification artifacts and compliance reports to support V&V efforts. Qualifications The Skills You Will Bring (Minimum): Education Four (4) year degree in Engineering (Aerospace, Electrical, or STEM). Other Engineering fields may be considered. Experience 10 years of proven relevant experience (preferred, but not required). Demonstratable working knowledge of Electrical Wiring Interconnection systems (25.17XX, 25.1309, System separations, EZAP, HIRF/EMI, EWIS components, Shielding, Grounding, harness protection, mitigation techniques, etc). Experience in aerospace EWIS certification (preferred, but not required). Proficiency with 2D Wire Harness Design Tools (Capital Harness preferred). Proficiency with 3D Wire Harness Design Tools (CATIA or NX preferred).

Keywords: 804 Technology, Seattle , Principal Engineer - EWIS, Engineering , Seattle, Washington