Required Skills/Experience: Modeling and simulation software development and use in heterogeneous, multi-platform environments High Performance Computing (HPC) environment knowledge and related technologies HPC user workflow support for modeling and simulation problems and GUIs Proficiency in Fortran, C, and/or C++ Proficiency in BASH and Korn shell scripting Linux operating system proficiency, including end-user system troubleshooting in a lab environment Software development lifecycle practic…

Working/Functional Title Postdoctoral Scholar Position Summary The Institute of Water Research is seeking a Postdoctoral Scholar with deep, hands-on expertise in the Water Quality Analysis Simulation Program (WASP). The primary responsibility of this position is to work directly with WASP's computational structure and water-quality and contaminant-transport processes and to integrate WASP with SWAT and MODFLOW. Exceptional Fortran programming expertise is essential and will be a major selection…

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris is the Trus…

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris is the Trus…

Job ID: 2616992 Location: Chantilly, VA, US Date Posted: 2026-09-18 Category: Engineering and Sciences Subcategory: Modeling/Sim Engr Schedule: Full-Time Shift: Day Job Travel: No Minimum Clearance Required: TS.SCI Clearance Level Must Be Able to Obtain: TS/SCI with Poly Potential for Remote Work: ORA_ON_SITE Description SAIC is hiring Astrodynamics Engineers in Chantilly, VA to join a mission-driven analysis team supporting multiple satellite programs at the forefront of national innovation. T…

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris is the Trus…

Job Description BAE Systems is looking for a motivated Guidance, Navigation, and Control (GN&C) Engineer to join the Force Development Evaluation (FDE) team for an exciting opportunity supporting the United States Air Force Intercontinental Ballistic Missile (ICBM) weapon system program. What is FDE? The FDE team supports Air Force Nuclear Weapons Center (AFNWC) and Air Force Global Strike Command (AFGSC) to monitor and assess the current performance and accuracy of the Minuteman III (MMIII) IC…

R-00189313 Description POSITION: Software Developer Location: Colorado Springs, CO Make an Impact with Leidos! Leidos Defense Sector has an opportunity in the Integrated Tactical Warning/Attack Assessment (ITW/AA) and Missile Defense mission areas. Your Greatest Work is Ahead! This Software Developer role includes trade studies, system engineering, model-based system engineering, portfolio analysis, software development demonstration and product testing and deployment to Cheyenne Mountain. Leid…

RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: Yes, 25% of the TimeDescription At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight acros…

Riverside Overview Riverside Research is an independent National Security Nonprofit dedicated to research and development in the national interest. We provide high-end technical services, research and development, and prototype solutions to some of the country’s most challenging technical problems. All Riverside Research opportunities require U.S. Citizenship. Position Overview Riverside Research’s Applied Mathematics and Physics Solutions group is seeking a Senior Computational Scientist/Scien…

Computational Physics, Inc. (CPI) is looking for a Full-Time Scientist-Research to support our customers remotely at NRL. Background We seek an early-to-mid career scientist to join a team at CPI and NRL developing whole-atmosphere versions of Navy weather prediction models extending from the surface to 500 km altitude. The candidate will run these emerging new models on Navy high-performance computing centers (HPCs), will analyze the model output, and will use the resulting insights to target …

Description SAIC is seeking a Guidance, Navigation, and Control (GN&C) Modeling and Simulation Aerospace Engineer to support hypersonic weapon systems development. As a critical member of our team, you will help design, model, and validate GN&C systems for hypersonic weapons, with a focus on simulation development, algorithm design, and performance analysis in a mission-critical environment. Your work will directly contribute to optimizing weapon system performance in high-speed and harsh envir…

Engineering Loads Professional Engineering Wichita, KS Posted: 10/30/2025 Job Description Job ID: 214148 Job Category: Engineering Position Type: Associate - W2 Shift: 1 PDS Defense, Inc. is seeking a Loads Professional Engineering, in Wichita, KS. Job Description: Perform analyses and simulations to compute aircraft design loads, in support of new aircraft design studies and continued airworthiness of in-service aircraft Use a large range of commercial and in-house tools, including a six-degre…

Job Number 20455 Standard Job Description Lockheed Martin is looking for a dynamic Systems Engineer to join the Combined Orbital Operations Logistics & Resiliency (COOLR) team within the Satellite Engineering, Operations & Sustainment Support (SEOSS) program in Valley Forge, PA. This role will focus on supporting infrastructure, system installation, comprehensive team coordination and Workstation, Network Configuration/Hardware in the controlled areas. As a Systems Engineer Sr., you will: * Pro…

Job Number 691 Standard Job Description At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We're creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We're erasing boundaries and forming partnerships across industries and around the world. We're advancing spacecraft and the workforce to fuel the next generation. And we're r…

Job Number 4836 Standard Job Description Job Description : About Lockheed Martin Space : Space is a critical domain, connecting our technologies, our security, and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more - we can innovate, invest, inspire, and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the bou…

Job Number 21084 Standard Job Description We are seeking a Modeling & Simulation (M&S) Engineer to perform the integration, development, and scaling of the Space Based Interceptor (SBI) end-to-end missile simulation. In this role, you will be part of a highly technical engineering team tasked with integrating and anchoring existing simulations and models into a unified, high-fidelity simulation architecture. The boundary of this simulation covers the complete SBI mission, fire control, guidance…

RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the TimeDescription At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight acros…

Job Number 20654 Standard Job Description We are seeking a Lead Modeling & Simulation (M&S) Engineer to spearhead the integration, development, and scaling of the Space Based Interceptor (SBI) end-to-end missile simulation. In this role, you will lead a highly technical engineering team tasked with integrating and anchoring existing simulations and models into a unified, high-fidelity simulation architecture. The boundary of this simulation covers the complete SBI mission, fire control, guidanc…

RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the TimeDescription At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight acros…