Contribute to the design, optimization, and validation of complex defense systems by modeling, simulating, and analyzing physical phenomena using CFD, multi-physics, and FEM.
Responsibilities
Model and analyze fluid flows (compressible/incompressible, turbulent, multiphase) for critical applications (aerodynamics, propulsion, thermal management, etc.)
Couple physical phenomena (e.g., fluid-structure interaction, thermal-mechanical, aeroacoustics) using tools like ANSYS Multiphysics, COMSOL, or internal codes
Perform finite element analysis (FEM) to assess structural integrity, stress, deformation, and fatigue in mechanical components interacting with fluid flows
Contribute to the improvement of simulation tools (automation, Python scripting, HPC)
Lead the aerodynamics group, owning aerodynamic design and analysis across the product range, mentoring engineers, and driving model development and validation.
Compensation
Competitive compensation including a robust equity incentive plan.
Responsibilities
Lead the aerodynamics group: set priorities, review work, mentor engineers alongside senior staff, and hire as the team grows.
Represent aerodynamics in design reviews, test planning, and certification discussions under the U.S. Coast Guard Design Basis Agreement.
Set priorities for and sign off on CFD methods and workflow standards for tools such as Star-CCM+ and Flow360.
Own the aerodynamic design and analysis from the current prototype through the production vehicle: wing, high-lift system, control surfaces, and their behavior across hull-borne, hydrofoil-borne, and wing-borne ground-effect operation.
Provide aerodynamic input to air data system specification, selection, and calibration.
Requirements
Nice to have: Distributed electric propulsion
Nice to have: wing-in-ground-effect vehicles
Nice to have: seaplanes
Nice to have: hydrofoils
Nice to have: fluid–structure interaction workflows
Support R&D projects (New Technology and New Product) involving fluid machines such as pressure exchangers, centrifugal and reciprocating pumps, turbines, turbochargers etc.
Locations (3)
India
San Francisco, California, United States
Texas, United States
Responsibilities
Support R&D projects (New Technology and New Product) involving fluid machines such as pressure exchangers, centrifugal and reciprocating pumps, turbines, turbochargers etc.
Develop analytical and CFD models to analyze turbomachinery and fluid machinery designs, suggest ways to optimize designs and predict performance over the full operating envelope.
Leverage commercial CFD tools such as ANSYS CFX/Fluent and/or STAR-CCM+ to generate computational meshes, perform CFD analyses and postprocess results.
Serve as R&D technical lead on various New Technology and New Product development projects involving fluid machines such as pressure exchangers, centrifugal and reciprocating pumps, turbines, turbochargers etc.
Responsibilities
Serve as R&D technical lead on various New Technology and New Product development projects involving fluid machines such as pressure exchangers, centrifugal and reciprocating pumps, turbines, turbochargers etc.
Lead / participate in the entire development cycle of a fluid machine including 1-D sizing (mechanical & hydraulic), engineering analyses, detailed design & layout prep, design/selection of rotor-bearing systems, seals & secondary flow paths, materials selection, validation test rig development, experimental validation & release to manufacturing.
Apply a combination of design, modeling (FEA, CFD, 1-D system models), testing and materials expertise to solve complex technical problems and make sound engineering trade-offs.
Define validation test plans and work with US and India-based teams to obtain high quality data, confirm model predictions and refine designs.
Collaborate daily with multi-national, cross-functional teams across time zones, including R&D, product engineering, manufacturing, quality and business units.
Requirements
Master's degree or higher in Mechanical Engineering (or related discipline)
A problem solver and a builder, passionate about creating practical solutions that enable customers to make better engineering decisions by building CAE models integrated into AI-tools.
Locations (3)
London, England, United Kingdom
New York, New York, United States
Singapore, Singapore
Responsibilities
Contribute to marine propulsion projects with industry partners
Build models from geometry clean-up and meshing through to simulating and post-processing
Adapt and use parametric CAD models
Contribute to simulation pipeline automation for design optimisation and DoE studies
Support customer-facing work by helping prepare and present results clearly
Lead thermal CFD and FEA modeling for the Kaleidos microreactor, set technical direction, mentor engineers, and influence program-level decisions.
Compensation
Radiant compensates people for impact and invests in those who continue to raise the bar. Radiant’s full-time new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits.
Responsibilities
Serve as the technical authority for thermal CFD and thermal FEA modeling of Kaleidos reactor systems
Define modeling strategy, methodology, and best practices for turbulent flow, heat transfer, and multi-physics interactions
Lead model verification and validation, correlating simulation results with test data
Architect automated simulation workflows and tooling that expand capability, accuracy, and efficiency
Lead the development of reduced-order analysis methods in partnership with design, systems, and test teams
Requirements
Bachelor’s degree in engineering, physics, or a similar field
Lead thermal-hydraulics modeling and simulation for Radiant’s Kaleidos microreactor, setting technical direction, mentoring engineers, and influencing design decisions.
Compensation
Radiant’s full-time new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits.
Responsibilities
Serve as the technical authority for thermal CFD and thermal FEA modeling of Kaleidos reactor systems
Define modeling strategy, methodology, and best practices for turbulent flow, heat transfer, and multi-physics interactions
Lead model verification and validation, correlating simulation results with test data
Architect automated simulation workflows and tooling
Lead the development of reduced-order analysis methods
Requirements
Bachelor’s degree in engineering, physics, or a similar field
Build 1-D steady-state and transient fluid system models using tools such as Simscape, GT-SUITE, Simcenter Flomaster or equivalent to analyze and optimize machine and system performance.
Help develop validation test plans and work closely with testing teams to confirm and validate model predictions.
Requirements
Bachelor's degree in Mechanical or Aerospace Engineering (or related discipline)
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