Senior Mechanical Engineer - Naval Materials & Testing

N4 Solutions, LLC; Washington, Key West (District of Columbia, FL); On-site; USD 120,000 - 180,000; Full time

Job summary

N4 Solutions, LLC in Washington, DC or Key West, FL seeks a senior Mechanical Engineer to lead Navy-focused R&D projects focused on structural integrity and environmental testing of Navy materials and components.

The role manages test planning, data analysis, and technical reporting while ensuring alignment with Navy mission and program objectives. Strong leadership and DOE-style reporting are essential.

Qualifications

• Master of Science or Doctor of Philosophy degree in Engineering, or equivalent.
• 8+ years of demonstrated experience in a research environment related to mechanical engineering, structural integrity, materials testing, or related technical areas.
• Senior R&D technical lead experience on complex Navy-focused programs with strong writing and leadership credentials.

Responsibilities

• Provide senior R&D management and technical leadership for mechanical engineering, structural integrity, materials performance, and component testing programs.
• Plan, develop, and execute structural integrity tests on metallic alloys, non-metallic materials, bearings, and other Navy-relevant components and systems.
• Develop test plans measuring durability, fatigue, static stiffness, dynamic stiffness, mechanical performance, and related properties.
• Incorporate Navy-relevant environmental parameters into test programs (seawater exposure, sea spray, temperature, load, cycling).
• Direct studies evaluating effects of material selection, fabrication, heat treatment, welding, bonding, additive manufacturing, wear, and related processes on performance.
• Plan and oversee mechanical and environmental test programs to characterize material properties, degradation, durability, fatigue behavior, and service conditions.
• Develop experimental designs, data requirements, quality controls, acceptance criteria, and procedures for repeatable, defensible test results.
• Oversee test setup, instrumentation validation, data acquisition, monitoring, and control to ensure test integrity and reliable measurements.
• Lead analysis and interpretation of mechanical test data to identify failure mechanisms and improvement opportunities.
• Support design, procurement, fabrication, and evaluation of experimental platforms, test beds, and fixtures for testing.
• Use analytical, statistical, modeling, and engineering software to evaluate test data and develop defensible conclusions.
• Support Navy-relevant test and evaluation activities involving materials, structures, machinery, and environmental exposure.
• Plan technology demonstrations and transition activities for materials and mechanical technologies to improve readiness.

Skills

Technical writing

Analytical

Leadership

Communication

Stakeholder coordination

Education

Master of Science in Engineering

PhD in Engineering or Physical Science

Job description

N4 Solutions, LLC in Washington, DC or Key West, FL seeks a senior Mechanical Engineer to lead Navy-focused R&D projects focused on structural integrity and environmental testing of Navy materials and components.

The role manages test planning, data analysis, and technical reporting while ensuring alignment with Navy mission and program objectives. Strong leadership and DOE-style reporting are essential.