Marmon Aerospace & Defense LLC

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.

A Summer Experience. A Lifetime of Value.
We’ll meet you where you are and help you go further. This summer, we’re committed to bringing early‑in‑career talent together—trusting you to own your work and helping you level up through professional development, networking, and exposure to real‑world projects.



We’re doing things that matter. Our wire and cable power critical aerospace and defense systems. Join us as an intern and we’ll help you move up and around Marmon’s 120+ companies as you grow your skills.

Join the Biggest Small Business You’ll Ever Find

Marmon Defense proudly supports the defense industry for Land, Sea, Air and Space applications by offering a full range of connectivity products and services, including custom wire and cable, coil cords, cable assemblies, tools, testing and training and installation services. We are the one-stop-shop for harsh environment connectivity solutions.

Our manufacturing centers in Manchester, NH, Hooksett, NH and Naples, FL house dedicated teams providing a complete product offering of high performance wire and cable using both high and low temperature materials and custom designs to meet the most exacting requirements. As an experienced manufacturer we assure that all of our products are engineered and manufactured with the highest level of expertise.

What You’ll Do

The Accounting Intern will provide hands‑on support to the Finance & Accounting team in a manufacturing environment within the Aerospace & Defense industry. This internship offers exposure to core accounting functions, plant operations, and corporate reporting.

You will work closely with team members across the Finance organization and gain practical experience in financial control, cost tracking, fixed asset management, and compliance initiatives.

Responsibilities and projects may include:

• Assist with a fixed asset inventory and tagging project
• Review capital projects and help enhance the capital request process
• Support the three‑way match process (purchase orders, receipts, invoices)
• Support monthly inventory reconciliation tasks
• Summarize customer payment trends for internal reporting
• Assist with cost center reporting, with a focus on indirect material expenses and outside services
• Help build visuals, summary slides, and other materials for financial flash reports and month‑end reviews
• Assist with Power BI development projects and dashboard enhancements
• Participate in financial process improvement and data‑accuracy initiatives

This internship provides a strong foundation in accounting operations within a regulated aerospace manufacturing environment.

What You’ll Need

• Pursuing a degree in Accounting, Finance, Business Administration, or a related field
• Rising Junior or Senior preferred
• Strong attention to detail and accuracy
• Solid analytical and problem‑solving skills
• Proficiency with Excel; familiarity with databases or BI tools is a plus
• Strong verbal and written communication skills
• Ability to manage multiple tasks and meet deadlines
• Willingness to collaborate with cross‑functional partners
• Curiosity, initiative, and eagerness to learn

Compensation

$22.00 – $27.00 per hour, based on relevant experience and academic background.

Work Hours / Length of Program

• 10–12 weeks (May–August 2026)
• Temporary part/full‑time, targeting 40 hours per week
• Start/end dates flexible based on school schedules and business needs
• This is a paid internship
• Reports to: Accounting Supervisor (day‑to‑day) with regular check‑ins with the Financial Controller

Working Conditions & Physical Demands

This position is based in our state‑of‑the‑art aerospace manufacturing facility. The environment may involve exposure to noise, temperature fluctuations, and other conditions typical of production settings. PPE is required when onsite.

• Successful completion of a drug screening and physical exam required
• Regular walking, standing, sitting, hearing, and talking
• Occasional stooping, kneeling, or crouching
• Ability to view computer monitors for extended periods
• Manual dexterity for keyboard and office equipment
• May occasionally lift or move items up to 50 pounds
• Ability to work safely in a manufacturing environment

Location

Saddle Brook, NJ

Post‑Offer Requirements

After receiving a conditional offer, candidates must complete additional job‑related screenings as required by applicable law.

Equal Opportunity Statement

We are an equal opportunity employer, and all applicants will be considered without regard to protected class status. If you require reasonable accommodation during the application or recruiting process, please contact [email protected] and include the job title and location.

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 [email protected], and please be sure to include the title and the location of the position for which you are applying.