Joint Simulation Environment (JSE) Engineer

Paylocity; Dayton (OH); On-site; USD 110,000 - 170,000; Full time

Job summary

Aptima is a technological leader in the national security sector, delivering advanced modeling and simulation solutions for training and mission readiness. We seek a Joint Simulation Environment Engineer to lead prototyping, integration, and testing across JSE components, ensuring robust, scalable performance for complex government lab environments.

You will collaborate with cross‑functional teams to connect hardware, software, and human performance, enhancing interoperability and readiness for

Qualifications

• 7+ years of experience integrating and operating modeling & simulation systems in LVC/DMO environments (DIS, GRID)
• 2+ years hands-on experience operating within the JSE/JIAB
• Proficiency integrating simulators/tools using GRID/DIS/HLA/RPR-FOM and planning integration events
• Experience developing scenarios in simulation frameworks/tools like AFSIM and NGTS
• Experience analyzing system performance, network latency, and data flows

Responsibilities

• Install, configure, and maintain a JSE-in-a-box (JIAB) stack per JTB releases
• Integrate simulators across security levels using GRID and DIS standards
• Integrate AFSIM and NGTS into the M&S environment
• Assist with simulator maintenance and operational readiness
• Collaborate with partners and PMs to plan demos, dry runs, and evaluations
• Provide hands-on troubleshooting across Windows/Linux, networks, simulators
• Support hardware installs, demos, or facility changes

Skills

M&S integration

JSE/JIAB operations

Network protocols (GRID, DIS)

AFSIM/NGTS experience

System performance analysis

Troubleshooting HW/SW

Documentation

Cross-functional collaboration

Security clearance (Secret)

Tools

AFSIM

NGTS

JIAB

Windows

Linux

Job description

Description

Who We Are

Aptima is a technological leader in the national security industry. Our mission is to drive the future of national security by engineering scalable solutions that fuse technological innovation with human potential to transform how individuals and teams train, develop, and perform in mission-critical environments.

Our culture is rooted in our core values, which have evolved over time and our employees have embraced: Integrity, Ingenuity, Excellence, Respect, Engagement, Teamwork. At our core, Aptima researches, develops, and innovates within an area that engineering firms largely ignore, the human component. To impact the world in meaningful ways, you must bring those innovations to light, and that is precisely what we do.

How You Will Make An Impact

The Joint Simulation Environment (JSE) Engineer will have a hands‑on role in advancing Aptima’s mission by transforming innovative concepts into high-quality technical solutions that enhance interoperability in a government‑owned modeling and simulation laboratory environment. You will lead the design, prototype, and testing of technical solutions that power simulation environments, ensuring they are flexible, robust, and optimized for our customers’ training demands.

Your work will include novel prototyping activities and integration of technologies into a modeling and simulation (M&S) environment that includes the JSE and many other technologies, giving you a direct opportunity to impact the capabilities of this unique modeling and simulation environment. Whether you’re prototyping and testing software that connects simulation capabilities to the JSE, analyzing the technical and network performance of the JSE Technical Baseline, or adding a new human in the loop simulator into an event, your expertise will directly contribute to the technical advancement of this M&S environment that is transforming how test and training enterprises work together. Your work will directly operators to train more effectively, rehearse mission concepts, and continuously sharpen their readiness.

By combining technical expertise with cross‑functional collaboration, you will enable Aptima to deliver cutting‑edge solutions that seamlessly integrate hardware, software, and human performance.

Key Responsibilities

• Install, configure, and maintain a JSE-in-a-box (JIAB) stack aligned to current JSE Technical Baseline (JTB) releases.
• Integrate simulators and tools across multiple security levels using networking standards and protocols that may include the Global Reusable Interface Domain(GRID) and Distributed Interactive Simulation (DIS).
• Integrate simulation frameworks and tools such as AFSIM and NGTS into the modeling & simulation integration environment.
• Assist with simulator and simulation system maintenance and operational readiness, adhering to established system configurations.
• Collaborate with mission partners, program managers, and other technical individuals of multiple specialties to plan demonstrations, dry runs, and evaluations; support event planning, execution, and debrief.
• Provide hands‑on technical troubleshooting across Windows / Linux systems, networks, simulators and tools.
• Provide cross‑functional support to project team members during hardware installs, demonstrations, or facility changes.

Requirements

• 7+ years of experience integrating and operating modeling & simulation (M&S) systems and simulators in LVC/DMO environments (e.g., DIS, GRID).
• 2+ years hands‑on technical experience operating within the Joint Simulation Environment and or JSE-in-a-Box (JIAB).
• Demonstrated proficiency integrating simulators and tools using networking standards and protocols (e.g., Global Reusable Interface Domain (GRID), Distributed Interactive Simulation (DIS), HLA/RPR-FOM) and planning/executing integration events across multiple security levels.
• Experience using and developing scenarios in simulation frameworks and tools (e.g., AFSIM, NGTS) within a modeling and simulation environment.
• Demonstrated experience analyzing one or more of: system and system-of-system performance, network latency and packet-level inspection, distributed system operation and data flows.
• Ability to independently identify and troubleshoot software and hardware issues.
• Working knowledge of workstation hardware, cabling, and basic networking sufficient to support IS staff as needed.
• Strong documentation habits, including system notes, change logs, and configuration updates.
• Ability to work both independently and as part of a cross‑functional team to include scientists, program managers and subject matter experts.
• Strong problem‑solving skills and a willingness to build innovative solutions when off‑the‑shelf options don’t fit.
• Demonstrated initiative and ownership in driving tasks and builds to completion.
• Collaborative outlook that supports shared goals and project success.
• Active (or recent) U.S. Security Clearance is required, Secret Collateral
• Eligible for a TS SCI U.S. Security Clearance
• Desired Certifications: Must meet DoD 8140 IAT Level II compliance (e.g., Security+).

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, age, national origin, disability, protected veteran status or any other status protected by applicable national, federal, state or local law.