Sr. Software Developer (Real-Time Simulation & Dev Lab) - 27748

HII's Mission Technologies division•California, MD

5d•$128,989 - $185,000•Onsite

About The Position

HII Mission Technologies is seeking a Senior Software Engineer to support development and integration of advanced modeling and simulation capabilities within the Joint Simulation Environment (JSE) at NAS Patuxent River, MD. JSE is a high‑fidelity, continuously evolving synthetic battlespace used for training, test, threat replication, analysis, and R&D across the Navy and joint forces. As part of an on‑site team supporting NAWCAD, you will design, enhance, and maintain critical software components used across the JSE ecosystem—including NGTS, DIADS, GRID, and other constructive and virtual simulation frameworks. This role is ideal for an experienced C++ engineer who enjoys solving complex technical problems, contributing to large‑scale simulation systems, and working closely with operators, engineers, and mission stakeholders. Impact Your work directly strengthens the Navy’s ability to train, test, and evaluate next‑generation capabilities in realistic multi‑domain environments. Your engineering contributions will improve simulation accuracy, system performance, interoperability, and threat representation used by aviators, analysts, and test organizations. You will play a key role in advancing JSE as a mission‑critical training and test environment for the Department of Defense.

Requirements

9 years relevant experience with Bachelors in related field; 7 years relevant experience with Masters in related field; 4 years relevant experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 13 years relevant experience.
Strong experience in object‑oriented software development, primarily in C++.
Hands-on experience using Git (branching, merging, conflict resolution).
Proficiency in Linux command-line environments (Bash).
Ability to manage multiple tasks and priorities in a collaborative team setting.
Strong communication, troubleshooting, and organizational skills.
Current or active (or interim) Secret clearance, with ability to obtain and maintain a DoD Top Secret clearance.
U.S. Citizenship is required.

Nice To Haves

Active Top Secret/SCI clearance.
Experience with NGTS, GRID, DIADS, ART, WSCE, FIAB, VATS, or related simulation frameworks.
Experience with object‑oriented programming in Java or Python.
Experience contributing to system architecture, design reviews, or integration planning.
Background in Agile development practices.
Advanced Git usage, including release management, branching strategies, and multi‑repo workflows.
Familiarity with Red Hat Enterprise Linux (RHEL).
Experience supporting Special Access Program (SAP) environments.

Responsibilities

Design, develop, integrate, and maintain software modules for the JSE synthetic environment and related systems.
Implement C++/C software features supporting constructive entities, threat systems, visualization components, and environmental behaviors.
Evaluate and review C++ code, ensuring high-quality, scalable, and maintainable designs.
Develop multi-threaded or parallel-processing components and inter‑process communication solutions.
Use Git for daily development, including branching, merging, pull requests, and resolving conflicts.
Work in Linux (Bash) and Windows environments; interact with remote repositories and CI/CD infrastructure.
Collaborate with other engineers and system architects to design new capabilities and support integration of NGTS, DIADS, GRID, and related toolsets.
Participate in software testing, debugging, documentation, and customer demonstrations.
Support training, troubleshooting, and operational use of JSE components alongside government personnel.