Java Developer Jobs in Springfield, OH (NOW HIRING)

nou Systems, Inc. (nSI) is now officially a 100% ESOP company!  We value teamwork and collaboration, and this transition allows us to take that commitment to a new level. nSI empowers our customers by supplying products, services, and expertise with powerful, data driven insights that transform defense systems and improve capabilities.

We are pleased to announce the opening for a AFSIM Specialist who will join our Technical Solutions Division in Beavercreek, Ohio and become part of our rapidly growing technology company operating in missile defense, cybersecurity, test range modernization, biotechnology, and space control marketspaces. You will be part of a team that constructs, manages, and conducts discrete mission engineering and analysis to evaluate the efficacy of legacy architectures and new technologies 

Responsibilities: 

• Design, develop, and extend AFSIM plugins and simulation frameworks.
• Build and integrate mission-level simulations for multi-domain operations (air, land, sea, space, cyber).
• Develop, update, and refactor SysML-based MBSE models representing missile performance and system attributes.
• Create automated workflows for generating scalable SysML missile models and libraries.
• Develop cloud-native solutions for migrating legacy M&S tools and processes.
• Use CI/CD pipelines (Git, GitLab) and containerization tools (Docker) to streamline development and deployment.
• Perform debugging, performance optimization, and validation of models and simulations.
• Collaborate with engineers and system architects to ensure seamless system-of-systems integration.

Basic Qualifications:

• Bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering, Physics, Mathematics, or related STEM field.
• 4+ years software development experience (C++, Python, C#, Java, or MATLAB).
• Experience with AFSIM framework (mission modeling, simulation scripting, or plugin development).
• Experience with MBSE/SysML modeling tools (Cameo, MagicDraw, Enterprise Architect).
• Familiarity with CI/CD workflows and version control systems (Git, GitLab, Jenkins).
• Ability to work in Windows and Linux environments.
• Strong debugging, problem-solving, and technical documentation skills.
• Active Secret Clearance (ability to obtain TS/SCI).
• U.S. Citizenship required.

Lacking any one of these disqualifies you from this job. 

Preferred Qualifications:

• MS or PhD in Computer Science, Engineering, or related field.
• 8+ years of experience with AFSIM or other mission-level modeling frameworks (NGTS, ITASE, World Simulation Framework).
• Experience developing custom AFSIM plugins, extensions, or native models.
• Experience with cloud-native architectures and migrating simulation tools into Digital Engineering pipelines.
• Experience with object-oriented design patterns and Agile development.
• Familiarity with multi-domain mission modeling (missile defense, hypersonics, ISR).
• Hands-on experience with containerization (Docker, Kubernetes).
• Active TS/SCI clearance.

nou (pronounced ‘new’) Systems:

Since its founding in 2012, nou Systems has built a reputation for excellence in innovative engineering, prototype development, and technical and professional services in multiple markets, including missile defense, cybersecurity, test range modernization, and space control. Our diverse and highly skilled team delivers state-of-the-art products from concepts and prototypes to fully developed and integrated solutions.

We offer significant advancement and personal career development opportunities within our dynamic high-tech company. Our culture is firmly established in treating our employees like family. 

Benefits of working at nSI

nou Systems, Inc. offers a comprehensive, total rewards package that includes competitive compensation and diverse benefits that reflect our company culture of service, excellence, and a supportive work environment. Benefits may vary based on status but the majority of our positions include the following:

• Competitive Wages*
• Medical, Rx, Dental & Vision Insurance
• Medical plan with Health Savings Account eligibility
• Company-funded Life, Short-Term & Long-Term Disability Insurance
• Personal Time Off, Vacation, and Paid Holidays
• 401(k) Retirement Plan
• Employee Stock Ownership Plan (ESOP)
• Flexible Spending Accounts
• Norton LifeLock 
• Tuition Reimbursement 
• Personal Development, Technical Learning Opportunities, & Lunch-n-Learns
• Corporate Sponsored Events & Community Outreach

*Final compensation for this position is determined by a variety of factors, such as a candidate’s relevant work experience, skills, certifications, and geographic location.

nSI is an Equal Opportunity Employer

Employment opportunities at nSI are based upon a candidate’s qualifications and capabilities to perform the essential functions of a particular job and are free from discrimination based on race, color, religion, national origin, sex, sexual orientation, gender identity, age, disability, protected veteran status, genetic information, or any other characteristic protected by law. For our complete EEO/AA and Pay Transparency statement, please visit www.nou-systems.com/workingatnou. U.S. citizenship is required for most positions.