10 principal mechanical engineer jobs found

X-energy LLC conducts a thorough recruiting process and will never issue offers without interview to discuss qualifications and responsibilities. All applications will be submitted via our company career page, www.x-energy.com/careers/. We will never ask you to provide payment information as part of the recruiting process. If anyone claiming to represent X-energy directs you in a manner otherwise, please contact us at www.x-energy.com/contact-us. Job Description X-energy, LLC is seeking an accomplished Principal Engineer/Mechanical Engineering Manager (Heat Exchanger Design) to lead our advanced Mechanical Design team in the development of Steam Generators and Heat Exchangers for advanced nuclear reactor applications. This leadership position drives the strategic direction and technical excellence of mechanical design operations for the Steam Generator of the Xe-100 Small Modular Reactor (SMR), with particular emphasis on mission-critical reactor systems. The successful candidate...

Thales Defense & Security, Inc. (TDSI) Headquartered in Clarksburg, MD, is a U.S. company that has been serving domestic and international defense Air, Land and Sea domains for 60+ years. With over 1,000 employees, TDSI and its four subsidiaries (Advanced Acoustic Concepts, Digital Receiver Technology, Tampa Microwave, and Trusted Cyber Technologies), supports U.S. Joint Services, special operations forces and multi-national partners with a variety of communication, visualization, signal intelligence/electronic warfare, and sensor/sonar capabilities. TDSI's key technologies include tactical handheld radios, expeditionary satellite terminals, helmet-mounted displays, optics and target recognition capability, advanced radars, undersea sensing and missile systems. Lives depend on what we do! Top Benefits (Subject to terms of applicable policies/plans) Competitive Salary Yearly Incentive Compensation Plan Medical insurance for self and eligible family members Generous...

POSITION PURPOSE This role is responsible for using global manufacturing systems to digitalize and link key operational manufacturing equipment technologies and processes throughout BAC's global factory footprint. By further connecting manufacturing systems to other key systems and datasets up and down the value stream, the role will be responsible for creating tools that drive Design for Manufacturability (DFM) early in the process and ultimately manage better outcomes in the operational factory environment. The Global Manufacturing Systems Technology Engineer reports to the Global Director, Advanced Manufacturing Technology. This role interacts with the Global Business Systems applications teams as well as all regions' manufacturing plants, regional manufacturing engineering and global engineering. This position does not have direct reports. PRINCIPAL ACCOUNTABILITIES Lead global manufacturing systems projects concerning connectivity and integration of new manufacturing...

Rocket Propulsion Engineer Location: Indian Head, MD Department: Engineering Services Type: Full-Time Min. Experience: Mid-Level Salary Range : $100,000 to $115,000 USD per year Advanced Technology & Research Corporation (www.atrcorp.com) is seeking to fill the following full-time permanent position. Based in Maryland and incorporated in 1973, ATR is an equal-opportunity engineering company with a solid reputation in various engineering disciplines for the government and Fortune 500 commercial customers. Salary for the position is competitive according to qualifications. ATR offers an attractive comprehensive benefits package, including Medical/Dental insurances, free basic life/ADD, and long-term and short-term disability insurances, 401(k) plan, educational assistance program, and 5 weeks of paid leave per year for minimum seniority. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, national origin,...

Salary Range : $80,000-$120,000 USD per year Advanced Technology & Research Corporation (www.atrcorp.com) is seeking to fill the following full-time permanent position. Based in Maryland and incorporated in 1973, ATR is an equal-opportunity engineering company with a solid reputation in various engineering disciplines for the government and Fortune 500 commercial customers. Salary for the position is competitive according to qualifications. ATR offers an attractive comprehensive benefits package, including Medical/Dental insurances, free basic life/ADD, and long-term and short-term disability insurances, 401(k) plan, educational assistance program, and paid time off. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, national origin, age, disability or veteran status. PRINCIPAL DUTIES & RESPONSIBILITIES: The successful applicant will join ATR's Engineering Services Division, working as a team member at...

Quantum Space is redefining mobility and maneuverability in space. Our high-mobility spacecraft platforms support national security, civil, and commercial missions with unmatched flexibility and propulsion capability. We build fast and iterate quickly. Who We're Looking For We are seeking a Senior Mechanical Engineer to own flight hardware development on our Spacecraft Programs. This role is built for an engineer who can take a subsystem/component from requirements to a released design, through build, integration, and test-while collaborating tightly with AIT and manufacturing. Senior-level expectations include independent ownership of deliverables and leadership of technical execution for meaningful scopes. Where You'll Make an Impact Own mechanical components/subsystems end-to-end: requirements, design, analysis coordination, release, and integration support Develop CAD and drawings in Creo; apply GD&T and define inspectable requirements Drive interface closure:...

Advanced Technology & Research Corporation (www.atrcorp.com) is seeking to fill the following full-time permanent position. Based in Maryland and incorporated in 1973, ATR is an equal-opportunity engineering company with a solid reputation in various engineering disciplines for the government and Fortune 500 commercial customers. Salary for the position is competitive according to qualifications. ATR offers an attractive comprehensive benefits package, including Medical/Dental insurances, free basic life/ADD, and long-term and short-term disability insurances, 401(k) plan, educational assistance program, and 5 weeks of paid leave per year for minimum seniority. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, national origin, age, disability or veteran status. Qualified persons should apply at: https://advancedtechnologyandresearchcorporation.applytojob.com/apply PRINCIPAL DUTIES AND RESPONSIBILITIES: The...

Position Purpose The Structural Engineering Manager serves as a senior technical authority and team leader within BAC's structural engineering function. This role is responsible for leading the development, validation, and deployment of structural system designs across product platforms while ensuring alignment with performance, cost, manufacturability, and regulatory requirements. The position provides technical direction, establishes methodologies and standards, and drives structural engineering excellence across new product development and product support activities. The individual also leads and develops a team of engineers, ensuring consistent application of structural engineering principles and continuous advancement of structural capabilities. Nature & Scope Reports to the Senior Manager, Subject Matter Expert (SME) Engineering. Operates with broad technical objectives and minimal supervision, leading both technical direction and team execution. Influences...

As a full-service engineering, design, and construction services firm, Mi-Tech delivers comprehensive support for utility and infrastructure projects from planning and design through execution. Our multidisciplinary team provides practical, innovative solutions that emphasize cost efficiency, constructability, and long-term value. Founded in 1985, Mi-Tech has built a reputation for excellence in engineering, design, environmental, laboratory, technical, and field services across multiple industries. The 2026 merger with J.D. Hair & Associates further strengthened our capabilities and resources, adding decades of specialized expertise in trenchless, geotechnical, and structural engineering to our core offerings. As a proud member of the Michels Family of Companies, Mi-Tech collaborates with an internationally respected team to deliver integrated, end-to-end engineering, design, and construction solutions that meet the highest standards of quality and performance. In your role as...

Job Description The Project Engineer (ME-III) has mastery of at least one core engineering principle and advanced knowledge of related engineering fields. The Project Engineer independently directs and technically manages engineering and design activities under the guidance of a Project Manager, and is responsible for tracking progress and technical adequacy of the design solution. The Project Engineer interacts with all OTECH departments as necessary to provide engineering support to OTECH manufacturing, integration, and test activities, and provides work leadership for lower level employees. Experience in maritime and/or subsea engineering is highly desired. Responsibilities ESSENTIAL Develop and apply advanced engineering analytical and design methods, theories and research techniques, to complex engineering projects. Coordinate and supervise an interdisciplinary design team of engineers, designers, drafters, technical writers, and technicians. Review progress and...