Principal OR Sr. Principal Computational Scientist

We are seeking Computational Scientists with a robust scientific and computational background who have the skills and interest in developing and implementing scalable scientific software and algorithms used to model physical processes on high-performance computing (HPC) systems. This position will involve code optimization and algorithm development towards improving existing software and tools as well as developing new efficient ones.
This position requires full-time work on site at our Linthicum, MD facility or our Annapolis Junction, MD facility.
Your responsibilities:

Benchmark and profile existing codes and workflows; identify bottlenecks and throughput limitations and establish path for improvement.
Enable scaling of simulation and optimization software on HPC systems through the design and development of efficient serial and parallel algorithms.
Develop and implement numerical simulation models and scientific algorithms for modeling physical processes of interest.
Improve simulation performance via hardware-aware code optimization at the core, node, and system (internode) level.
Develop, improve, and orchestrate complex HPC workflows that use off-the-shelf and custom modeling tools for efficient execution on HPC systems.
Benchmark and profile new codes and workflows and report on improvements.
This position can be filled at the Principal OR Sr. Principal level. Qualifications for both positions are listed below:
Basic Qualifications for Principal Computational Scientist:

Bachelor's degree in applied mathematics, computational chemistry, computer science, physics or a relevant STEM field with 5 years of relevant technical experience; Master's degree in applied mathematics, computational chemistry, computer science, physics or a relevant STEM field with 3 years of relevant technical experience OR Master's degree in applied mathematics, computational chemistry, computer science, physics or a relevant STEM field and currently enrolled in a PhD program with a completion date prior to start with 1 year of relevant technical experience; PhD in computational chemistry, applied mathematics, computer science, physics or relevant STEM field with 1 year of relevant technical experience.
Experience with developing physics-based simulation and scientific software.
Domain expertise in at least one scientific field (e.g., condensed matter physics, quantum chemistry, fluid dynamics, solid mechanics, or any other field where computational methods are used for predictions).
Experience with collaborative scientific software development (e.g., Git).
Familiarity with code optimization and HPC hardware.
Proficiency in writing code in C or C++ (preferred) and Python.
This position requires the applicant to be a U.S. Citizen.
Ability to obtain and maintain a U.S. Government security clearance per business requirements.
Basic Qualifications for Sr. Principal Computational Scientist:

Bachelor's Degree in applied mathematics, computational chemistry, computer science, physics or a relevant STEM field with 8 plus years of relevant technical experience; Master's Degree in applied mathematics, computational chemistry, computer science, physics or a relevant STEM field with 6 years of relevant technical experience; PhD in applied mathematics, computational chemistry, computer science, physics or a relevant STEM field with 4 years of relevant technical experience.
Experience with developing physics-based simulation and scientific software.
Domain expertise in at least one scientific field (e.g., condensed matter physics, quantum chemistry, fluid dynamics, solid mechanics, or any other field where computational methods are used for predictions).
Experience with collaborative scientific software development (e.g., Git).
Familiarity with code optimization and HPC hardware.
Proficiency in writing code in C or C++ (preferred) and Python.
This position requires the applicant to be a U.S. Citizen.
Ability to obtain and maintain a U.S. Government security clearance per business requirements.
Preferred Qualifications for both Principal AND Sr. Principal Computational Scientist:

PhD in applied mathematics, computational chemistry, computer science, physics or a relevant STEM field.
Experience with developing numerical algorithms for solving linear-algebra problems and partial differential equations.
Experience with developing and implementing numerical optimization methods.
Experience with running, profiling, and benchmarking scientific software on HPC systems.
Experience with implementing hardware-aware code optimization techniques for HPC systems.
Experience with developing parallel code (MPI, OpenMP) or GPU programming (CUDA)
Experience with designing scientific software (design patterns).
Experience leading small technical teams delivering HPC software.
* Active U.S. Government security clearance

Primary Level Salary Range: $127,400.00 - $191,200.00Secondary Level Salary Range: $158,600.00 - $238,000.00The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate's experience, education, skills and current market conditions.Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions as well as allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. In addition, Northrop Grumman provides a variety of benefits including health insurance coverage, life and disability insurance, savings plan, Company paid holidays and paid time off (PTO) for vacation and/or personal business.The application period for the job is estimated to be 20 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates.Northrop Grumman is an Equal Opportunity Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO and pay transparency statement, please visit http://www.northropgrumman.com/EEO. U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.

Client-provided location(s): Annapolis Junction, MD

Job ID: NorthropGrumman-R10212966-2

Employment Type: OTHER

Posted: 2025-10-31T20:21:24