Software Engineer (Engineer Software 3) - 27915

Mission Technologies, a division of Huntington Ingalls Industries, is seeking an experienced Software Engineer to support the Joint Training Synthetic Environment (JTSE) and JLVC Modernization effort under the Joint Staff J7 (JS J 7) contract. This position focuses on designing and implementing Cross Domain Solutions (CDS) that enable secure, interoperable data exchange within joint training and simulation environments.

What You Will Do

• Design, develop, and implement CDS rulesets that control data flow between security domains (allow, block, sanitize, transform).
• Analyze and map DIS protocol objects and interactions to ensure compatibility with CDS constraints and fixed format data structures.
• Support modernization of JLVC HLA FOM components and integrate them within CDS architectures.
• Engineer data transformation methods to convert high classification non kinetic effects into releasable low classification formats.
• Maintain end to end traceability of training audience actions and system behaviors across classification boundaries.
• Coordinate with accrediting authorities to ensure CDS compliance with all security and data handling policies.
• Extend and maintain existing DIS based CDS implementations.
• Develop technical documentation, including architectures, rulesets, mappings, and data flow specifications.
• Participate in system testing, validation, and accreditation activities for CDS-enabled capabilities.
• Troubleshoot and resolve issues related to protocol interoperability, data integrity, and cross domain transmission.
• Support milestones associated with the Fully Informed Simulation Environment (FISE).

• 5 years relevant experience with Bachelors in related field; 3 years relevant experience with Masters in related field; 0 years relevant experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 9 years relevant experience.
• Must have an active TS/SCI security clearance.
• Strong communication skills and ability to collaborate with senior government, military, and technical stakeholders.
• Proven ability to work in complex, high stakes environments with a focus on timely, high quality delivery.
• Strong critical thinking skills and ability to develop innovative solutions to operational training challenges.
• Proficiency in one or more programming languages (Java, C++, Python, or similar).
• Experience with simulation protocols such as DIS (Distributed Interactive Simulation) and/or HLA (High Level Architecture).
• Understanding of network protocols, data serialization, and structured data formats.
• Experience working with secure systems or cross domain technologies.
• Familiarity with fixed format or constrained data packet structures.
• Ability to work effectively in team environments and communicate complex technical ideas clearly.

Preferred Requirements

• Hands on experience with Cross Domain Solutions (CDS), including ruleset creation and data guard configuration.
• Experience with Joint Live Virtual Constructive (JLVC) environments or other large scale DoD training/simulation systems.
• Background in Multi Level Security (MLS) systems, classification markings, and data labeling workflows.
• Knowledge of non kinetic effects modeling and simulation.
• Experience navigating accreditation processes such as RMF or ICD 503.
• Experience with distributed systems, real time simulation, or message oriented middleware.
• Understanding of DoD architecture frameworks and joint training system operations.

HII is more than a job - it's an opportunity to build a new future. We offer competitive benefits such as best-in-class medical, dental and vision plan choices; wellness resources; employee assistance programs; Savings Plan Options (401(k)); financial planning tools, life insurance; employee discounts; paid holidays and paid time off; tuition reimbursement; as well as early childhood and post-secondary education scholarships. Bonus/other non-recurrent compensation is occasionally offered for qualified positions, and if applicable to this role will be addressed by the recruiter at the screening phase of application.

As a trusted partner to our military customers, HII designs, develops and operates the largest LVC enterprise that prepares warfighters for cross-domain battle. With advanced technologies to enable mission readiness, HII understands that preparation requires full coordination-not readiness in piece-parts. For more than 40 years, the U.S. Navy has entrusted HII to maintain and modernize the vast majority of its fleet. With a holistic approach to life-cycle maritime defense systems-from small watercraft to submarines, surface combatants and aircraft carriers-HII ensures a high state of readiness. HII supports the Department of Energy's national security mission through the management and operation of its sites, as well as the safe cleanup of legacy waste across the country. HII meets clients' toughest nuclear and environmental challenges. Leadership Mindset at HII - Mission Technologies Leadership at HII is a mindset, not a title. Through our Leadership Capability Framework, we define how every team member contributes to our mission and culture: * Know & Grow Your People - Commit to learning and supporting team success. * Build Relationships - Communicate openly, collaborate well, and build trust. * Take Ownership - Deliver on commitments and take pride in your work. * Customer First - Focus on the mission and those we serve. * Shape the Future - Bring ideas, curiosity, and continuous improvement. * Act with Urgency - Take initiative and follow through with purpose. These capabilities guide how all employees contribute to our shared success across Mission Technologies., Our team of more than 7,000 professionals worldwide delivers all-domain expertise and advanced technologies in service of mission partners across the globe. Mission Technologies is leading the next evolution of national defense - the data evolution - by accelerating a breadth of national security solutions for government and commercial customers. Our capabilities range from C5ISR, AI and Big Data, cyber operations and synthetic training environments to fleet sustainment, environmental remediation and the largest family of unmanned underwater vehicles in every class. Find the role that's right for you. Apply today. We look forward to meeting you., We build the world's most powerful, survivable naval ships and defense technology solutions that safeguard our seas, sky, land, space and cyber. Our workforce includes skilled tradespeople; artificial intelligence, machine learning (AI/ML) experts; engineers; technologists; scientists; logistics experts; and business administration professionals. Recognized as one of America's top large company employers, we are a values and ethics driven organization that puts people's safety and well-being first. Regardless of your role or where you serve, at HII, you'll find a supportive and welcoming environment, competitive benefits, and valuable educational and training programs for continual career growth at every stage of your career. Together we are working to ensure a future where everyone can be free and thrive.