Fluid Mechanics jobs in Clayton, MO

SUPERVISORY ARCHITECT/ENGINEER (TITLE 32)

Scott Air Force Base, Illinois

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Today

Summary THIS IS A NATIONAL GUARD TITLE 32 EXCEPTED SERVICE POSITION. This National Guard position is for a SUPERVISORY ARCHITECT/ENGINEER (TITLE 32), Position Description Number D1552000 and is part of the IL 126, National Guard. Learn more about this agency Duties Help As a SUPERVISORY ARCHITECT/ENGINEER (TITLE 32), GS-0810-13, you will performs long term planning and organizational development necessary to accomplish architecture and engineering functions for programs essential to state

Full-time

USD 109,137.00 - 141,880.00 per year

Mechanical Engineer 1 (Entry Level) - Energy & Industrial (January 2027)

Clayton, Missouri

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Today

Responsibilities This position has a targeted start date of January 2027. This position will offer you the ability to directly apply your knowledge of thermodynamics, heat transfer, and fluid mechanicsYou will be involved in the system engineering aspects of power plant engineering and oil & gas engineering, including the design, modification, and analysis of mechanical systemsYou will be working within project teams with other Mechanical Engineers, focused on preparing engineering deliverables

Full-time

USD 62,998.00 - 90,586.00 per year

Senior Simulation Driven Development Engineer - US

St. Louis, Missouri

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Today

Working at Watlow Watlow is a global technology and manufacturing leader who provides world class engineering expertise through innovative thermal products and systems, enabling our customers to thrive. We are making a positive impact every day as our solutions enrich the lives of people everywhere. We have been providing breakthrough thermal solutions for over 100 years! Our corporate values guide us uncompromisingly to always do the right thing, continually learn and improve, respect everyone,

Full-time

Mechanical Engineering New Graduate | St. Louis, MO

St. Louis, Missouri

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Today

Mechanical Engineering New Graduate | St. Louis, MO 100% Employee-Owned | Big-firm resources, local-team relationships, ONE IMEG culture This posting is for Winter 2026 New Graduate opportunities. IMEG is hiring a Mechanical Engineering New Graduate in St. Louis, MO, to support the analysis, design, and implementation oversight of mechanical systems for the vertical building industry. This entry-level role offers hands-on design, analysis, and project execution experience, with mentorship, tr

Full-time

Mechanical Project Engineer | St. Louis, MO

St. Louis, Missouri

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Today

Mechanical Project Engineer | St. Louis, MO 100% Employee-Owned | Big-firm resources, local-team relationships, ONE IMEG culture IMEG is hiring a Mechanical Project Engineer in St. Louis, MO, to lead design efforts as a project manager or lead engineer for low to moderate complexity projects and support the delivery of larger and high complexity work with senior staff. This role focuses on engineering analysis, design, and implementation oversight of mechanical systems for the vertical building

Full-time

Lead Mechanical Engineer 2 - Nuclear

Remote

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Today

Responsibilities You will be involved in nuclear power plant systems design, including preparation or review of: Modification packages for operating nuclear power plantsFunctional mechanical drawings and/or drawings for nuclear power plant systemsEngineering analyses and evaluations to support modifications and operation of plant systemsTechnical specifications and procurement documents for plant equipmentVendor bid evaluations for plant equipmentStudies and options evaluations for modification

Full-time

USD 134,546.00 - 205,557.00 per year

Lead Mechanical Engineer 1 - Nuclear

Remote

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Today

Full-time

USD 118,023.00 - 180,313.00 per year

Senior Mechanical Engineer 1 - Nuclear

Remote

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Full-time

USD 84,762.00 - 129,498.00 per year

Lead Mechanical Engineer 2 (Nuclear Plant Analysis) - Nuclear

Remote

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Today

Responsibilities Our electric power generation clients are seeking to increase the power output of their existing power plants to meet the electric demands. This is expanding work in the Mechanical Analysis Engineering group. You will work on major systems, equipment and plant process in the following areas: Develop and lead licensing basis system and component evaluations for nuclear power uprate projects.This position will offer you the ability to directly apply your knowledge of thermodynami

Full-time

USD 134,546.00 - 205,557.00 per year

Mechanical Engineer Consultant 2 (Nuclear Plant Analysis) - Nuclear

Remote

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Today

Full-time

USD 145,310.00 - 222,001.00 per year

Senior Mechanical Engineer 1 - Nuclear Plant Analysis

Remote

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Today

Responsibilities This position will offer you the ability to directly apply your knowledge of thermodynamics, heat transfer, fluid mechanics, and experience in power plant engineeringYou will be preparing or reviewing calculations, evaluations, and technical reports to support client recommendations and reviews, and will additionally conduct equipment sizing, optimization evaluation, and selection in response to client needsWhile supporting clients and project teams with other Mechanical Engine

Full-time

USD 84,762.00 - 129,498.00 per year

Senior Mechanical Engineer 2 - Nuclear Plant Analysis

Remote

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Today

Full-time

USD 100,019.00 - 152,807.00 per year

Lead Mechanical Engineer 1 (Nuclear Plant Analysis) - Nuclear

Remote

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Today

Full-time

USD 118,023.00 - 180,313.00 per year

Senior Virtual Propulsion Engineer - Thermal & Hydraulics

Remote or Warren, Michigan

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Today

Job Description This role is categorized as hybrid. This means the successful candidate is expected to report to Warren, Michigan three times per week, at minimum The Role This position offers the opportunity to work in a highly collaborative team focused on propulsion related system models including thermal, hydraulic, lubrication and ventilation domains. Build 1D fluid dynamics & coarse 3D thermal models that directly impact design development, validation and eliminate hardware testing. Simu

Full-time

CFD/Thermal Hydraulics Engineer III-IV

Remote or Rockville, Maryland

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Today

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, 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 ;br> Job Description This role is responsible for the engineering design and development of mechanical s

Full-time

USD 122,500.00 - 138,750.00 per year

Lead Mechanical Engineer 1 - Mission Critical

Remote

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Today

Responsibilities This is a lead-level engineering position that offers a variety of challenging opportunities in Mechanical Engineering and will provide an excellent opportunity for career advancement. Lead Mechanical design engineering efforts on a multi-disciplined project design team and apply mechanical engineering expertise to the design and analysis of special purpose equipment, pressure vessels, and interfacing systems, controls, and structural support elementsPrepare and review complex

Full-time

USD 118,023.00 - 180,313.00 per year

Mechanical Engineering Consultant 2 - Nuclear

Remote

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Today

Responsibilities This position will offer you the opportunity to manage project(s) consisting of engineers, designers, controls and scheduling professionals involved in the design, modification, and analysis of new and existing nuclear power plant modifications. The position will involve coordinating with multiple internal and external departments to manage the life cycle of project execution. Responsible for project execution, coordination of resources from each discipline as requiredTake owne

Full-time

USD 145,310.00 - 222,001.00 per year

Lead Mechanical Engineer 1 (Power Uprates) - Nuclear

Remote

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Today

Responsibilities Our electric power generation clients are seeking to increase the power output of their existing power plants to meet the electric demands. This is expanding work in the nuclear industry. You will work on major systems, equipment and plant process in the following areas: Perform consulting level work for power uprates in the nuclear industry.Interface with clients and project teams to present technical discussions and project status.Develop engineering proposals and cost estima

Full-time

USD 118,023.00 - 180,313.00 per year

Virtual Propulsion Engineer - Thermal & Hydraulics

Remote or Warren, Michigan

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Today

Job Description This role is categorized as hybrid. This means the successful candidate is expected to report to Warren, Michigan three times per week, at minimum. The Role This position offers the opportunity to work in a highly collaborative team focused on propulsion-related system models, including thermal, hydraulic, lubrication, and ventilation domains. Build 1D fluid dynamics and coarse 3D thermal models that support design development, validation, and the reduction of hardware testing

Full-time

Engineer II, Field Service (Liquid Handler)

Remote or Virginia

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Today

Work Schedule Other Environmental Conditions Able to lift 40 lbs. without assistance, Adherence to all Good Manufacturing Practices (GMP) Safety Standards, Laboratory Setting, Some degree of PPE (Personal Protective Equipment) required (safety glasses, gowning, gloves, lab coat, ear plugs etc.), Standing for full shift Job Description Job Description: Thermo Fisher Scientific Inc. is seeking a highly skilled and motivated Engineer II, Field Service to join our world-class team. As an industr

Full-time

USD 28.85 - 43.27 per hour

Fluid Mechanics jobs in Clayton, MO, USA