The goal of this work is to develop a predictive method for evaluating material performance under thermal runaway conditions due to escaping gas and particles at materials used in venting structures. To achieve this, a neural network will be designed, trained, and applied to new materials. The neural network will be trained and validated using existing experimental and simulation data. The generated evaluation data will be compared with results from classical substitute and cell tests to evaluate the performance and reliability of the developed approach. Based on the obtained data, characteristic parameters for evaluating material failure under thermal runaway conditions will be identified and derived.

In the first step, a systematic literature review will be conducted on existing experimental, analytical, and simulation methods for evaluating fire protection materials in the thermal runaway context. Based on this, a suitable model for evaluating material performance in the context of thermal runaway will be developed, trained, and implemented. The model will be validated using experimental data to assess its predictive accuracy and robustness. Finally, the applicability of the developed approach and potential opportunities for further development will be critically discussed.

Key tasks:

• Conduct a systematic literature review on existing experimental, analytical, and simulation methods for evaluating fire protection materials in the thermal runaway context.

• Design, train, and implement a neural network for predictive evaluation of material performance under thermal runaway conditions.

• Evaluate and analyse experimental and simulation data to validate the model.

• Compare generated evaluation data with results from classical substitute and cell tests.

• Identify and derive characteristic parameters for evaluating material failure under thermal runaway conditions.

• Critically discuss the applicability of the developed approach and potential opportunities for further development.

Requirements:

• Bachelor's or master's degree in computer science, mechanical engineering, electrical engineering, or a related field.

• Experience in machine learning and deep learning.

• Familiarity with Python programming language and relevant libraries.

• Good understanding of thermal runaway phenomena and fire protection materials.

• Excellent communication and teamwork skills.

• Ability to work independently and manage multiple tasks.

Preferred skills:

• Experience with neural networks and deep learning frameworks such as TensorFlow or PyTorch.

• Familiarity with simulation software such as ANSYS or COMSOL.

• Knowledge of thermal analysis and heat transfer.

• Experience with data analysis and visualisation tools such as Matplotlib or Seaborn.

• Familiarity with version control systems such as Git.

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Responsibilities:

• Own hardware design (CAD, hand calculations, prototypes, etc) from concept generation to launch.
• Use first principles as a basis for every decision.
• Continuously look for opportunities to simplify designs.
• Communicate pros/cons of system architecture with respect to design and packaging considerations.
• Lead subsystem design reviews, present structures status to other team members, provide clear understanding of timelines and technical status.
• Act as the Responsible Engineer for your subsystem: Run analysis, visit vendors, define and execute hardware test plans.
• Build prototypes, analyze failures, and transition successful prototype designs to flight hardware and low rate production.
• Travel to test sites and vendors as needed.
• Create excellent technical documentation – slide packages, test plans and reports, procedures, assembly instructions, part and assembly drawings, vendor specifications and statements of work, etc.

Requirements:

• BS or higher degree in engineering or a hard science.
• Experience in an immersive hands-on technical project (collegiate project teams and/or professional settings).
• CAD skills (any platform) and ability to make high quality engineering drawings that meet common industry standards.
• Demonstrated hands-on fabrication and assembly skills. Experience working with hand tools, mill, lathe, etc.
• Strong understanding of engineering fundamentals: heat transfer, statics, solid mechanics, materials.
• Excellent attention to detail.
• Highly motivated, self-starting, and able to perform duties autonomously without supervision.
• Very organized and willing to establish scope and requirements for ill-defined problems.
• Passion for defending the United States and her allies.
• Eligible to obtain and maintain an active U.S. security clearance.

Preferred Qualifications:

• 2+ years of mechanical design experience in a professional setting with space hardware or industry of equivalent complexity.
• Experience in NX/Teamcenter.
• Experience in an immersive hands-on technical project in college or in free time.
• Ability to integrate electronic components (PCBAs, motors, sensors etc.) into mechanical designs.
• Experience working with (integrating in designs) optical or RF systems.
• Experience developing code in higher-level languages (e.g. Python, MATLAB, C++) for developing analytical models and data acquisition and automation.
• Structural or thermal testing experience – sensor selection, data acquisition, data post-processing (Python preferred)

Salary Range: $129,000-$171,000 USD

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As a Thermal Engineer at Shield AI, you will:

• Own thermal analysis and design efforts for unmanned aerial vehicle avionics, including custom power electronics
• Develop and validate analytical, numerical, and computational models for heat transfer and fluid flow using hand calculations and CFD tools such as FloEFD
• Provide input to trade studies, system architecture decisions, and risk assessments
• Assist cross-functional teams designing power electronic circuits and environmental enclosures
• Contribute to design requirements that impact circuit part selection, board layout, material selection, and other design aspects
• Drive test planning, instrumentation, and data analysis to correlate models with experimental results
• Communicate technical findings clearly through executive-level briefings, design reviews, and written reports

Required qualifications:

• B.S. in Mechanical Engineering, Aerospace Engineering, or related discipline
• Internship or engineering club experience in avionics or electronics thermal engineering
• Knowledge of heat transfer (conduction, convection, radiation) and fluid mechanics
• Familiarity with thermal analysis and CFD tools (e.g., ANSYS Icepak, FloEFD, STAR-CCM+)
• Experience with CAD design tools such as NX, SolidWorks, or similar
• Demonstrated experience applying first-principles reasoning to engineering problems
• Strong written and verbal communication skills, with a track record of leading technical discussions and presenting to stakeholders

Salary compensation is influenced by a wide array of factors including but not limited to skill set, level of experience, licenses and certifications, and specific work location.

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As a Staff Thermal Engineer, you will contribute to thermal analysis and design efforts for unmanned aerial vehicle avionics and thermal/fluid systems. You will develop and validate analytical, numerical, and computational models for heat transfer and fluid flow using hand calculations and CFD tools such as FloEFD. You will drive test planning, instrumentation, and data analysis to correlate models with experimental results.

Key responsibilities include:

• Contributing to thermal analysis and design efforts for unmanned aerial vehicle avionics and thermal/fluid systems
• Developing and validating analytical, numerical, and computational models for heat transfer and fluid flow using hand calculations and CFD tools such as FloEFD
• Driving test planning, instrumentation, and data analysis to correlate models with experimental results
• Communicating technical findings clearly through executive-level briefings, design reviews, and written reports

Requirements include:

• B.S. in Mechanical Engineering, Aerospace Engineering, or related discipline
• Minimum 7 years of professional experience in avionics or electronics thermal engineering
• Strong expertise in heat transfer (conduction, convection, radiation) and fluid mechanics
• Deep understanding of active and passive cooling solutions and their integration at component and system level
• Proficiency with thermal analysis and CFD tools (e.g., ANSYS Icepak, FloEFD, STAR-CCM+)
• Proficiency with CAD design tools such as NX, SolidWorks, or similar
• Demonstrated experience applying first-principles reasoning to complex engineering problems
• Strong written and verbal communication skills, with a track record of leading technical discussions and presenting to stakeholders

Preferred qualifications include:

• M.S. or Ph.D. in a relevant engineering discipline
• Experience with high-altitude aircraft avionics cooling and thermal design
• Familiarity with aircraft integration constraints (power, weight, volume, maintainability, safety)
• Hands-on experience with thermal and fluid system testing, instrumentation, and validation
• Knowledge of materials and manufacturing methods relevant to thermal management (pumps, heat exchangers, composites, etc.)
• Experience guiding trade studies, proposals, and customer interactions in aerospace or defense programs
• Background in multi-disciplinary system integration, spanning avionics, fluid systems, and systems engineering

Salary: $136,730 - $205,096 a year

Benefits: Pay within range listed + Bonus + Benefits + Equity

Note: Salary compensation is influenced by a wide array of factors including but not limited to skill set, level of experience, licenses and certifications, and specific work location.

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This role is best suited for an engineer who thrives on first-principles problem solving, is comfortable with ambiguous, open-ended challenges, and can bridge technical disciplines with strong communication and collaboration skills and the ability to simplify and communicate complex problems.

The engineer will be a key contributor in shaping designs, mentoring peers, and ensuring robust thermal solutions that meet mission-critical aerospace requirements.

Responsibilities:

• Own thermal analysis and design efforts for unmanned aerial vehicle avionics including custom power electronics
• Develop and validate analytical, numerical, and computational models for heat transfer and fluid flow using hand calculations and CFD tools such as FloEFD
• Provide technical leadership in trade studies, system architecture decisions, and risk assessments
• Lead cross-functional teams designing power electronic circuits and environmental enclosures. Provide design requirements that impact circuit part selection, board layout, material selection, and other design aspects
• Drive test planning, instrumentation, and data analysis to correlate models with experimental results
• Mentor junior engineers and guide cross-disciplinary teams in applying thermal/fluid fundamentals
• Communicate technical findings clearly through executive-level briefings, design reviews, and written reports
• Proactively identify risks, propose solutions, and influence electrical and/or PCBA design direction

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As a Staff Fluid & Thermal Systems Engineer at Shield AI, you will lead the design, development, and optimization of fluid and thermal systems for our advanced autonomous UAVs and ground systems.

Your expertise in fluid & thermal system design will drive innovation, prototyping, testing, and the successful integration of solutions that operate reliably in challenging environments.

This role requires technical leadership, collaboration with cross-functional teams, and an unwavering commitment to delivering excellence from concept to production.

Responsibilities:

• Own design and analysis of fluid and thermal systems for aircraft and ground platforms.
• Develop and implement innovative thermal solutions
• Use first-principles engineering to drive design decisions to yield optimal solutions
• Research technologies for integration into complex solutions
• Conduct advanced simulations to predict system performance and refine designs
• Execute testing and validation efforts, including data acquisition, post-processing, and verification against requirements
• Collaborate with cross-disciplinary teams to integrate fluid and thermal system designs into larger system architectures.
• Mentor and guide junior engineers, fostering technical growth and excellence within the team.
• Identify suppliers and build successful supplier management relationships for procurement of components or systems for fluid and thermal system designs
• Other duties as assigned

Required qualifications:

• Minimum 10+ years of experience in Fluid or Thermal System design, with a proven track record of technical excellence.
• B.S. or advanced degree in Mechanical, Aerospace, or related Engineering discipline.
• Deep understanding of heat transfer, fluid dynamics, thermodynamics, and system-level thermal management.
• Experience implementing system models in commercial tools, such as MATLAB Simscape, Amesim, etc.
• Experience developing custom engineering models in Excel and in languages such as MATLAB, Python, etc.
• Experience in fluid and thermal system testing, including sensor integration, data acquisition, and analysis.
• Expertise in 3D CAD modeling tools such as Siemens NX or equivalent.
• Demonstrated ability to execute projects with minimal oversight, assume full ownership, and deliver exceptional outcomes.
• Excellence in supplier management, COTS component sourcing, optimization/trade studies
• Proven success in dynamic, fast-paced environments.

Preferred qualifications:

• Extensive experience with fluid & thermal system design, analysis, manufacture and test for aircraft
• Familiarity with fluid and thermal system effects on aircraft performance
• Familiarity with startup or R&D environments, demonstrating adaptability and agility under pressure.
• Strong knowledge of environmental standards and certification processes for aerospace or defense systems.
• A passion for innovation and the ability to push boundaries in fluid & thermal system development.

$200,000 - $310,000 a year

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As the Principal Aircraft Thermal Engineer, you will lead thermal analysis and characterization efforts for unmanned aerial vehicle aircraft-level thermal systems. You will architect and validate analytical, numerical, and computational models for heat transfer and fluid flow using hand calculations, finite difference methods, and CFD tools such as FloEFD.

You will provide leadership in trade studies, system architecture decisions, requirements generation, and technical risk assessments. You will define and oversee test planning, instrumentation, and data analysis to correlate models with experimental results.

You will mentor and guide cross-disciplinary teams in applying thermal/fluid fundamentals. You will communicate technical findings through executive-level briefings, design reviews, and technical reports.

Key responsibilities include:

• Leading thermal analysis and characterization efforts for unmanned aerial vehicle aircraft-level thermal systems
• Architecting and validating analytical, numerical, and computational models for heat transfer and fluid flow
• Providing leadership in trade studies, system architecture decisions, requirements generation, and technical risk assessments
• Defining and overseeing test planning, instrumentation, and data analysis
• Mentoring and guiding cross-disciplinary teams
• Communicating technical findings through executive-level briefings, design reviews, and technical reports

Requirements include:

• B.S. in Mechanical Engineering, Aerospace Engineering, or related discipline
• Minimum 12 years of professional experience in avionics or electronics thermal engineering
• Deep expertise in heat transfer (conduction, convection, radiation) and fluid mechanics
• Advanced understanding of active and passive cooling solutions and their integration at the component and system level
• Proficiency with thermal analysis and CFD tools (e.g., FloEFD, STAR-CCM+)
• Proficiency with CAD design tools such as NX, SolidWorks, or similar
• Demonstrated ability to apply first-principles reasoning to complex engineering problems
• Ability to learn new and cutting-edge materials knowledge and thermal management techniques from a variety of sources (technical papers, text books, etc.) and apply it to the development of advanced thermal management design
• Strong communication and leadership skills, with experience presenting to executives and customers

Preferred qualifications include:

• M.S. or Ph.D. in a relevant engineering discipline
• Extensive experience with high-altitude aircraft thermal management, analysis, and design
• Familiarity with aircraft integration constraints (power, weight, volume, maintainability, safety)
• Hands-on experience with thermal and fluid system testing, instrumentation, and validation
• Knowledge of materials and manufacturing methods relevant to aerospace thermal management
• Experience guiding trade studies, proposals, and customer interactions in aerospace or defense programs
• Background in multi-disciplinary system integration, spanning avionics, fluid systems, and systems engineering

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You will work at the intersection of heat transfer, materials science, and optical engineering to push the boundaries of receiver efficiency, durability, and cost-effectiveness.

Key responsibilities include:

• Leading the end-to-end design and development of high-temperature solar receivers optimized for solar field integration
• Developing thermal and optical models to predict receiver performance, including flux distribution, heat transfer efficiency, and thermal stress analysis
• Selecting and qualifying materials capable of withstanding extreme temperatures (800°C–1000°C+), thermal cycling, and high solar flux environments
• Designing receiver geometries (cavity, external, tubular, particle-based) to maximize energy absorption while minimizing thermal losses and mechanical fatigue
• Collaborating with solar collection and controls teams to optimize aiming strategies and flux distribution on receiver surfaces
• Interfacing with heat exchanger and thermal storage engineers to ensure seamless integration of receiver output with downstream systems
• Developing and executing testing protocols for receiver prototypes, including high-flux testing and accelerated life cycle evaluation
• Driving design-for-manufacturing initiatives to reduce receiver cost and improve producibility at scale
• Staying current with advances in receiver technology, high-temperature coatings, and selective absorber materials

Required qualifications include:

• A bachelor's degree in Mechanical Engineering, Aerospace Engineering, Materials Science, or related field; a master's or PhD is preferred
• 7+ years of experience in thermal systems design, with significant focus on high-temperature receiver or heat exchanger development
• Demonstrated expertise in solar thermal receiver design for tower-based or central receiver systems
• Strong background in heat transfer (conduction, convection, radiation), thermodynamics, and fluid mechanics
• Proficiency with thermal simulation tools (ANSYS, COMSOL, SolarPILOT, or equivalent)
• Experience with high-temperature materials including ceramics, refractory metals, and advanced alloys
• Hands-on experience taking receiver designs from concept through prototype testing and into production

Preferred qualifications include:

• Experience with molten salt, liquid sodium, or particle-based heat transfer media
• Knowledge of selective absorber coatings and high-temperature surface treatments
• Familiarity with optical modeling and ray-tracing software for flux analysis
• Background in solar field optimization and aiming point strategies
• Publications or patents in solar thermal receiver technology

Additional information:

• Competitive salary and equity options
• Comprehensive benefits package, including health, dental, and retirement plans
• Dynamic work environment that fosters creativity and innovation
• Opportunities for professional growth and development in a rapidly evolving industry
• Relocation assistance

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Key Responsibilities:

• Own and develop the heat exchange system for Exowatt’s power conversion unit from design and analysis in a hands-on fashion. Engage with suppliers for development, build and testing.
• Perform analysis of mechanical components and systems for heat exchangers utilizing CFD and FEA such as Ansys multiphysics, CAD (Solidworks, Creo, or equivalent.
• Design, build and test of prototype heat exchanger units for Exowatt’s power conversion units.
• Validate models by test and analytical methods
• Create detailed engineering drawings and specifications for manufacturing
• Collaborate with cross-functional teams, including electrical, controls, thermal, and software engineers
• Evaluate and select appropriate materials based on requirements, cost, and sustainability
• Design for manufacturability, assembly, and serviceability
• Interface with suppliers, manufacturers, and external engineering partners
• Participate in design reviews and ensure compliance with industry standards and regulations
• Troubleshoot issues during testing and deployment

Qualifications:

• Bachelor's degree in Mechanical Engineering or related field; Master's degree preferred
• 7+ years of mechanical engineering experience with a focus on thermal-fluid systems with a focus on heat exchanger design, analysis, and development.
• Demonstrated experience designing, analyzing, and optimizing heat exchangers (shell-and-tube, fined heat exchangers, heat sinks, printed circuit heat exchangers, heat pipes, etc) for high temperature applications.
• Hands-on experience in testing of heat exchangers, energy, and power conversion systems.
• Strong foundation in thermodynamics, conjugate heat transfer, fluid mechanics, and thermal coatings, with the ability to perform thermal and hydraulic sizing calculations
• Proficiency in 3D CAD software (SolidWorks, Creo, or similar) and experience designing complex flow paths and pressure-containing components
• Experience with FEA and CFD software (ANSYS multiphysics, Nastran, or similar) for thermal stress analysis and fatigue life prediction under cyclic operating conditions
• Familiarity with CFD tools for flow distribution, heat transfer optimization, and pressure drop analysis
• Strong understanding of GD&T ASME Y14.5 and engineering drawing standards for precision-manufactured components
• Knowledge of relevant standards and codes (ASME BPVC, TEMA, API, ISO) as applied to pressure vessels, heat exchangers, and rotating equipment
• Experience designing for demanding operating environments, including thermal cycling, high-temperature creep, and corrosive or reactive working fluids
• Experience with renewable energy systems, thermal energy storage, or concentrated solar power preferred
• Excellent communication and collaboration skills with the ability to work across multidisciplinary teams

Additional Information:

• Competitive salary and equity options
• Comprehensive benefits package, including health, dental, and retirement plans
• Dynamic work environment that fosters creativity and innovation
• Opportunities for professional growth and development in a rapidly evolving industry
• Relocation assistance

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What you'll do

• Leads the coordination and execution of all technical activities throughout the lifecycle of a sales opportunity, including technical discovery, negotiation of technical success criteria, product presentations, demonstrations, and evaluations.
• Acts as a credible hands-on expert in the customer's application, working with customers to understand their product development requirements and identify opportunities to improve performance metrics.
• Supports the development of differentiating simulation solutions using the platform and our products; implements our solutions into customers' design workflows.
• Collaborates with Product Development to translate customer requirements into new product features; participates in testing of new Ansys product releases and develops application best practices.
• Supports the Field and Digital Marketing teams by developing promotional materials, supporting events, and authoring conference presentations.
• Contributes to and leads professional service deliveries and conducts training classes.

What you need

• Demonstrated experience in the use of Fluent or other commercial Computational Fluid Dynamics (CFD) software packages.
• Strong fundamentals and experience in modeling turbulence, multiphase flows, mass & heat transfer phenomena.
• Demonstrated understanding of engineering practices and product development, experience with building solutions using simulation technology and deploying those solutions within customers' engineering workflows.
• Logical problem-solving, strong interpersonal and communication skills, fluent in writing and speaking English.
• Strong organizational and time management skills, possesses a sense of urgency.
• Projects a professional image and demonstrates business acumen, driven to succeed.

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What you'll do

As a Software Developer, you will be responsible for developing, implementing, and maintaining combustion and reactive-flow models within a finite volume CFD solver environment. You will also enhance numerical algorithms to improve stability, accuracy, and computational performance, including adaptation for parallel and high performance computing environments.

What you need

• PhD in Mechanical Engineering, Chemical Engineering, Physics, Computational Engineering, or a related technical discipline
• Strong theoretical understanding of combustion, fluid mechanics, thermodynamics, and heat transfer
• Experience with finite volume CFD methods and numerical discretization techniques
• Proficiency in C++ or Fortran for scientific or engineering software development; additional experience with Python is advantageous

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