Senior Scientific Software Engineer

RE/SPEC Inc. • Albuquerque, NM

3d

About The Position

RESPEC is seeking a Senior Scientific Software Engineer to support scientific computing work for a large National Laboratory. The role sustains and modernizes computational modeling software used in a high-consequence environment, emphasizing reliable, maintainable code and performance on Linux and high-performance computing (HPC) systems.

The engineer supports computational modeling across conceptual, process, and numerical models; improves legacy software; and contributes to software quality, reproducibility, documentation, and migration readiness. Work is performed in accordance with applicable Nuclear Quality Assurance (NQA-1) requirements.

Requirements

• Master’s degree in computer science, engineering, or a related discipline (such as environmental science, mathematics, or physics), and at least 5 years of relevant experience in computational modeling, software development, and documentation; or a bachelor’s degree in a related discipline and at least 10 years of relevant experience.
• At least one project within the 5 years preceding the response deadline involving both computational modeling and software development in a regulated, safety-critical, high-consequence, or equivalent mission-critical environment.
• Ability to describe the project environment, tasks, responsibilities, and deliverables, and explain why the work was high-consequence or mission-critical.
• Scientific programming with Fortran, Python, and C and/or C++.
• GNU/Linux or equivalent development environments, including build, compilation, and debugging toolchains.
• HPC systems and job schedulers such as Slurm or equivalent.
• Bash or equivalent Unix/Linux shell scripting.
• Software quality practices, testing, and scientific data formats and workflows.
• Debugging, profiling, performance analysis, and legacy-code modernization.
• Git or equivalent version control and reproducible builds.
• Source-code documentation tools such as Doxygen or equivalent.
• Experience with Python 2 and Python 3.
• Experience with C and C++.
• Experience with OpenMPI, MPICH, or Intel MPI.
• Experience with serial and parallel scientific codes.

Responsibilities

• Sustain, analyze, and modernize scientific software, including legacy systems.
• Refactor code to improve portability, efficiency, maintainability, and stability.
• 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-scheduler use.
• Apply software quality practices, testing, and verification and validation.
• Document source code, technical debt, risks, and software workflows.
• Support reproducible builds, scientific data workflows, and migration readiness.
• Perform work in accordance with applicable Nuclear Quality Assurance (NQA-1) requirements.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior