Computational Scientist

Voltai, Inc

$120K — $150K *
Technical Services
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • PhD in computational physics, applied mathematics, computational engineering, or related field
  • Expertise in numerical PDE methods: FEM, FVM, or BEM
  • Strong C++ and CUDA programming skills
  • Experience with multi-node HPC: MPI and domain decomposition
  • Deep knowledge of sparse linear algebra methods
  • Experience with neural operators like FNO and DeepONet
  • Understanding of AI methodologies for simulation and model evaluation

Responsibilities

  • Develop and scale MPI+CUDA PDE solvers for complex 3D IC geometry problems
  • Tune and enhance AMG preconditioners and Krylov solvers for performance
  • Build and train neural operators as high-fidelity surrogates for PDE solvers
  • Design simulation pipelines for generating training data for neural models
  • Validate solutions against analytical results and benchmarks

Benefits

  • Work in a dynamic environment backed by top investors and industry leaders
  • Collaborate with a team of experienced professionals, including former Stanford faculty
  • Engage in cutting-edge projects at the intersection of AI and physical sciences
  • Opportunity to contribute to high-stakes, impactful innovations in hardware design
  • Access to advanced resources for research and development in computational physics
Full Job Description
What You'll Work On
  • Develop and scale MPI+CUDA PDE solvers for electrostatics, charge transport, and electromagnetic field problems on complex 3D IC geometries across multi-node GPU clusters
  • Tune and extend AMG preconditioners, Krylov solvers, and mesh pipelines for performance and correctness at scale
  • Build and train neural operators (FNO, DeepONet, GNO, and variants) as high-fidelity surrogates for PDE-based field solvers
  • Design simulation pipelines that generate training data for neural operator models - including sampling strategies, mesh handling, and physical consistency checks
  • Validate everything: analytical solutions, published benchmarks, and cross-validation between field solvers and learned surrogates


Required
  • PhD in computational physics, applied mathematics, computational engineering, or a closely related field
  • Deep expertise in numerical PDE methods: FEM, FVM, or BEM - weak formulations, quadrature, convergence, error analysis
  • Strong C++ and CUDA - writing and optimizing kernels, memory hierarchy, multi-GPU programming
  • Multi-node HPC: MPI, domain decomposition, collective communication, strong/weak scaling
  • Sparse linear algebra at depth: Krylov methods, algebraic multigrid, preconditioning strategies
  • Hands-on experience with neural operators (FNO, DeepONet, or equivalent) - training, architecture design, and evaluation on PDE datasets
  • Solid understanding of AI for Science methodology: how to design datasets from simulations, handle out-of-distribution generalization, and ensure physical consistency of learned models


Strongly Preferred
  • Experience with HYPRE, PETSc, and Trilinos
  • Familiarity with multi-node GPU clusters: NCCL, CUDA-aware MPI, NVLink topologies
  • Published work in neural operators, physics-informed ML, or scientific HPC
  • IC design domain knowledge: device physics, semiconductor materials, layout data formats

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