Simulation Framework Engineer I

Shield; Washington (District of Columbia); On-site; USD 90,000 - 140,000; Full time

Job summary

Shield AI in Washington, DC area is seeking an experienced Simulation Framework Engineer (L1) to help connect modeling and simulation environments with core autonomy software. You will write C++ and Python, develop adapters and plugins, and contribute to reusable simulation components that reduce complexity for autonomy developers.

This hands-on role is for an early-career engineer, working on HMSSimBlocks, HMSF migrations, and integration with simulation frameworks like NGTS and AFSIM, with

Qualifications

• Bachelor’s degree in CS/CE/AE/ME or related field; equivalent practical experience may be considered.
• Foundational programming in C++ and Python through coursework, internships, personal projects, research, or professional experience.
• Familiarity with Linux development environments, including command-line tools, compiling software, and basic scripting.
• Understanding of core software engineering practices, including Git-based version control, debugging, code review, and automated testing.
• Familiarity with object-oriented programming, software interfaces, APIs, and modular software design.
• Exposure to networking concepts such as TCP, UDP, client-server communication, message passing, or data serialization.
• Interest in modeling and simulation, autonomy, distributed systems, game engines, visualization systems, or defense technology.
• Ability to obtain and maintain an active U.S. SECRET security clearance; U.S. citizenship is required.

Responsibilities

• Develop, compile, test, and maintain C++ and Python software for simulation adapters, plugins, and interfaces.
• Contribute to baseline integrations for simulation backends such as AFSIM, NGTS, Aechelon, HMSSimBlocks, and HMSF.
• Assist with the transition from HMSSimBlocks to HMSF by porting simulation features, updating interfaces, validating behavior, and documenting migration considerations.
• Help maintain and improve existing HMSSimBlocks integrations for programs that still depend on the legacy framework.
• Support the development of reusable simulation components and plugin patterns that enable other engineering teams to integrate custom sensors, vehicle models, effects, or mission capabilities.
• Assist with implementation and maintenance of CIGI-based plugins and interfaces that enable communication between simulation frameworks and Aechelon image generators.
• Help verify functional behavior across simulation plugins, including Common Scenario Format (CSF) file loading, DDS communications, GRID interface requirements, and Hivemind SDK compatibility.
• Diagnose simulation and autonomy integration issues by reviewing application logs, network traffic, DDS messages, API behavior, configuration files, and call stacks.
• Write and maintain unit tests, automated integration tests, developer documentation, and example configurations.
• Participate in code reviews, engineering design discussions, bug triage, and collaborative debugging with simulation, autonomy, and integration teams.

Skills

C++

Python

Linux

Object-oriented programming

Debugging

Version control

Education

Bachelor's degree in computer science or related field

Tools

Git

CMake

pytest

GoogleTest

Job description

Shield AI in Washington, DC area is seeking an experienced Simulation Framework Engineer (L1) to help connect modeling and simulation environments with core autonomy software. You will write C++ and Python, develop adapters and plugins, and contribute to reusable simulation components that reduce complexity for autonomy developers.

This hands-on role is for an early-career engineer, working on HMSSimBlocks, HMSF migrations, and integration with simulation frameworks like NGTS and AFSIM, with