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Principal Engineer - Ewis

Job in Seattle, King County, Washington, 98127, USA
Listing for: AeroTEC - Aerospace Testing Engineering & Certification Inc.
Full Time position
Listed on 2026-01-12
Job specializations:
  • Engineering
    Aerospace / Aviation / Avionics, Electrical Engineering, Systems Engineer, Engineering Design & Technologists
Salary/Wage Range or Industry Benchmark: 150000 - 200000 USD Yearly USD 150000.00 200000.00 YEAR
Job Description & How to Apply Below
Position: PRINCIPAL ENGINEER - EWIS

AeroTEC is an aerospace engineering company providing a wide array of high-end services and turnkey solutions ranging from aircraft level analysis and design engineering, all the way to prototype flight testing and complete airworthiness certification. Our highly experienced engineering, testing, and program management teams work closely with customers to address their unique needs in a safe and cost-effective manner, utilizing proven in-house development methodologies and tools.

About

the Team

AeroTEC’s Engineering Services Department supports and provides comprehensive, full-service aerospace engineering services to customers in aircraft design, test, and certification. The department is responsible for engineering consulting related to design, performance, similarity analysis, certification activities, test requirements, and documentation to meet customer needs.

About the Role

AeroTEC seeks 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 significant independent discretion and judgment in matters of importance.

In This Role You Will
  • 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, form boards 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.
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).
Physical Requirements
  • While performing the duties of this job, the employee is regularly required to talk and/or hear. The employee is frequently required to sit, stand; walk; use hands to finger, handle or feel; and reach with hands and arms. Must have the ability to sit for long periods of time.
  • The employee is occasionally required to climb or balance; and stoop, kneel, crouch or crawl. The employee must frequently lift and/or move up to 10 pounds and occasionally lift and/or move up to 25 pounds. Specific vision abilities required by this job include close vision, distance vision, color vision, peripheral…
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