Principal Design Engineer

As a part of the global industrial organization Marmon Holdings—which is backed by Berkshire Hathaway— you’ll be doing things that matter, leading at every level, and winning a better way. We’re committed to making a positive impact on the world, providing you with diverse learning and working opportunities, and fostering a culture where everyone’s empowered to be their best.

This role functions as the Principal Design Engineer responsible for the design, development, validation, and lifecycle support of Radio Frequency (RF) coaxial cable, telecom, and fiber products used in wireless infrastructure applications (e.g., DAS, Public Safety, in‑building systems). This role bridges product management, manufacturing, quality, and customers to ensure wireless communication products meet performance, reliability, cost, and time‑to‑market objectives.

• Manage and prioritize all engineering efforts to align with and achieve the strategic objectives of the business unit.
• Direct development of new products utilizing the full capabilities of the MIEI group.
• Support Sales and Marketing by providing technical literature and design reviews.
• Review national and international codes and standards to ensure product compliance.
• Represent the Company at industry, trade, and agency meetings.
• Guide customers in the proper selection, use, and installation of RF coaxial cable, telecom, and fiber products.
• Direct troubleshooting efforts at the sales/customer level.
• Develop training programs for customers and internal personnel.
• Provide functional direction and supervision to the engineering group to ensure timely processing of orders and quotes and efficient operation of product manufacturing.
• Ensure engineering documents are timely, complete, accurate, and that spec‑related issues are resolved.
• Prepare the R&D budget aligned with long‑term strategic initiatives.
• Develop and manage execution of R&D activities aligned with long‑term product roadmaps.
• Support CAPEX plan development and 5M analysis for new equipment, including manufacturing and testing requirements based on product design.

These duties represent the general requirements of the Principal Design Engineer role and are not an exhaustive list. Additional responsibilities may be assigned based on business needs.

• Four‑year Electrical Engineering degree (Master’s preferred).
• Minimum of 5 years of related experience.

• Strong verbal and written communication skills across all organizational levels.
• Proficiency with lab and simulation software.
• Continuous improvement mindset with active participation in business advancement.
• Willingness to travel to customer locations.
• Strong managerial and communication skills.
• Knowledge of:

• RF test methods
• RF theory
• Passive & active RF systems
• Material science
• Modeling and simulation of RF, fiber, and telecom cables

• Ability to work long hours in a sedentary role involving sitting, talking, computer work, and repetitive motions.
• Ability to move objects and materials of at least 25 lbs.
• Ability to collaborate with manufacturing team members in potentially noisy environments.
• Ability to follow safety guidelines and wear required PPE when on the manufacturing floor.

Following receipt of a conditional offer of employment, candidates will be required to complete additional job-related screening processes as permitted or required by applicable law .

We are an equal opportunity employer, and all applicants will be considered for employment without attention to their membership in any protected class. If you require any reasonable accommodation to complete your application or any part of the recruiting process, please email your request to careers@marmon.com, and please be sure to include the title and the location of the position for which you are applying.