Mechanical Engineer

Leidos LLC; Huntsville (AL); On-site; USD 70,000 - 126,000; Full time

Job summary

Leidos, a leader in defense and aerospace, seeks a Mechanical Engineer to support hypersonic vehicle development within the Hypersonics line of business. You will design components, produce drawings, BOMs, and interface control documents while collaborating with cross-functional teams to meet performance and producibility goals.

The role requires a DoD Secret clearance, a Bachelor’s in engineering, and hands-on CAD experience (Creo/CATIA/SolidWorks).

Qualifications

• Active DoD Secret security clearance or eligibility.
• ABET-accredited engineering degree with 2+ years of relevant experience.
• Proficiency with 3D CAD tools (Creo/CATIA/AutoCAD/SolidWorks).
• Experience in PLM environments (Windchill).
• GD&T understanding per ASME Y14.5 and basic tolerance stack-up.
• Ability to read drawings and specifications, and manage configuration.
• Strong communication, teamwork, and documentation skills.
• Willingness to engage in technical meetings and reviews.
• Proficiency with Microsoft Office.

Responsibilities

• Support design and development of mechanical components for hypersonic vehicles.
• Create and maintain TDP artifacts: drawings, BOMs, specs.
• Manage interface control drawings and engineering documentation.
• Develop manufacturable designs with tolerances and producibility in mind.
• Apply GD&T per ASME Y14.5 and perform tolerance analyses.
• Participate in design reviews and technical meetings.
• Assist material selection, processes, finishes, fasteners for aerospace/defense.
• Support prototype fabrication, assembly, integration, and testing.
• Collaborate with multidisciplinary teams to mature designs.

Skills

Communication skills

Analytical thinking

Detail orientation

Problem solving

Education

Bachelor's degree in engineering

Tools

Creo

CATIA

AutoCAD

SolidWorks

Windchill

Job description

Introduction

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainable. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. Your greatest work is ahead! Leidos’ Defense Systems is seeking a talented Mechanical Engineer to join its Hypersonics line of business. With offices across the United States engaging in the defense, space, cyber and commercial fields, Leidos provides responsive, cost-effective engineering, scientific and IT solutions. The selected candidate will support hypersonic development programs, contributing to advanced weapon system development efforts that are critical to maintaining U.S. technological superiority in this rapidly evolving domain. If this sounds like the kind of environment where you can thrive, keep reading! Leidos Defense Systems Sector provides a diverse portfolio of systems, solutions, and services covering land, sea, air, space, and cyberspace for customers worldwide. Solutions for Defense include enterprise and mission IT, large-scale intelligence systems, command and control, geospatial and data analytics, cybersecurity, logistics, training, and intelligence analysis and operations support. Our team is solving the world’s toughest security challenges for customers with “can’t fail” missions.

Primary Responsibilities

• Support the design and development of mechanical components and assemblies for advanced hypersonic vehicles.
• Create and maintain Technical Data Package (TDP) artifacts, including drawings, bills of materials (BOMs), and specifications.
• Manage and maintain technical interface control drawings and associated engineering documentation.
• Develop mechanical designs with consideration for functionality, manufacturability, assembly, inspection, and producibility.
• Apply Geometric Dimensioning and Tolerancing (GD&T) principles in accordance with ASME Y14.5 and applicable engineering drawing standards.
• Perform tolerance analyses and engineering calculations to support design decisions and verify component and assembly requirements.
• Participate in design reviews, peer reviews, drawing reviews, and other technical meetings throughout the product development lifecycle.
• Support the selection of materials, manufacturing processes, finishes, fasteners, and other mechanical design features appropriate for aerospace and defense applications.
• Support prototype fabrication, assembly, integration, and testing activities by troubleshooting mechanical issues and developing engineering solutions in coordination with senior engineers.
• Collaborate with multidisciplinary teams, including structural, thermal, systems, manufacturing, quality, and test engineering, to develop and mature mechanical designs.
• Independently manage tasks and projects with guidance from senior engineers.
• Perform work in both classified and unclassified environments as required.

Basic Qualifications

• Active DoD Secret security clearance.
• Bachelor’s degree in engineering from an ABET accredited institution with 2+ years of relevant experience.
• Proficiency with 3D CAD tools such as Creo, CATIA, AutoCAD, SolidWorks, or similar software.
• Experience working within Product Lifecycle Management (PLM) environments.
• Working knowledge of Geometric Dimensioning and Tolerancing (GD&T) in accordance with ASME Y14.5 and basic tolerance stack-up analysis.
• Understanding of engineering drawings, specifications, and configuration management processes.
• Fundamental understanding of mechanical design principles, including statics, mechanics of materials, materials science, and manufacturing processes.
• Willingness to facilitate technical meetings with internal and external stakeholders, including design, peer, and tabletop reviews.
• Ability to communicate technical information effectively through written documentation, drawings, presentations, and verbal communication.
• Strong attention to detail, analytical thinking, problem-solving, communication, and collaboration skills.
• Self-starter with an eagerness to learn, take ownership of assigned tasks, and grow technically within a fast‑paced engineering environment.
• Proficiency with Microsoft Office applications (Word, Excel, PowerPoint).

Preferred Qualifications

• Experience supporting DoD programs involving missile systems, reentry vehicles, hypersonic systems, or other advanced aerospace technologies.
• Experience supporting rapid development, prototyping, or fast‑paced engineering programs.
• Experience creating 3D models and engineering drawings using PTC Creo and managing data within Windchill.
• Familiarity with aerospace materials and manufacturing processes, including machining, composites, additive manufacturing, welding, bonding, and mechanical fastening.
• Hands‑on experience supporting hardware fabrication, assembly, integration, or testing.
• Familiarity with structural and/or thermal analysis as it relates to mechanical design.

Pay and Benefits

Pay Range $69,550.00 - $125,725.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026.

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

Securing Your Data

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.