Senior Scientific Software Engineer - HPC & C/C++

pofft Technology Inc.; United States; On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Flexible Work Schedules

401(k) & ESOP

Professional Development and Training

Tuition Reimbursement

Employee Assistance Program

Medical/Dental/Vision Insurance Plans

Job summary

RESPEC is seeking a Senior Scientific Software Engineer to support computational modeling software for a large National Laboratory. You will modernize legacy code, improve performance on Linux and HPC systems, and ensure quality through testing and documentation.

The role requires strong Fortran, Python, and C/C++ skills, extensive Linux tooling, and experience with MPI, Slurm, and Doxygen. Join a 100% employee-owned environment on challenging mission-critical projects.

Qualifications

• Master’s degree with at least 5 years in computational modeling and software development.
• Bachelor’s degree with at least 10 years in relevant field and proven track record.
• At least one project in the last 5 years combining modeling and development in a safety-critical env.
• Ability to describe project environment, tasks, responsibilities, and deliverables.

Responsibilities

• Sustain, analyze, and modernize scientific software, including legacy systems.
• Refactor code for portability, efficiency, and maintainability.
• Support computational modeling across conceptual, process, and numerical models.
• Debug, profile, benchmark, and assess software performance and scalability.
• Support Linux development, HPC workflows, and job schedulers like Slurm.
• Apply software quality practices, testing, and verification.
• Document source code, debt, risks, and workflows.
• Support reproducible builds and data workflows; ensure NQA-1 compliance.

Skills

Fortran

Python

C/C++

GNU/Linux

Slurm

Bash scripting

MPI

Debugging

Doxygen

Version control (Git)

Education

Master’s degree in CS/Engineering or related

Bachelor’s degree in related field

Tools

OpenMPI/MPICH/Intel MPI

Git

Job description

RESPEC is seeking a Senior Scientific Software Engineer to support computational modeling software for a large National Laboratory. You will modernize legacy code, improve performance on Linux and HPC systems, and ensure quality through testing and documentation.

The role requires strong Fortran, Python, and C/C++ skills, extensive Linux tooling, and experience with MPI, Slurm, and Doxygen. Join a 100% employee-owned environment on challenging mission-critical projects.