New

Modeling & Simulation Analysis Intern

Modern Technology Solutions, Inc.
paid time off, 401(k)
United States, Missouri, St. Louis
Nov 04, 2026
Modern Technology Solutions is seeking a Modeling & Simulation Analysis Intern to join our team in St. Louis, MO during Summer 2027. Responsibilities: Modern Technology Solutions, Inc. (MTSI) is seeking a Modeling and Simulation Analyst, who will work with customers, the Study Lead, and model developers to create and execute analysis plans including computer model run matrices and develop computer model (AFSIM and other mission and engagement level models) input to replicate the system or concept under test, the appropriate operating environment, and the concept of operations. Your essential job functions will include but may not be limited to: Assist the Study Lead in defining study questions to address their issues of concern and in translating customer study questions into analysis plans. Develop model input data to replicate systems or concepts as analysis subjects. Assist software developers who program and operate the model(s) to produce output. Post-process this output into measures of merit and effectiveness to support the analysis plan objectives. Assist in the interpretation of model results and develop presentations of findings and conclusions for the customer to help them in their decision-making processes. Qualifications: Actively enrolled in an accredited undergraduate program in Physics, Engineering, Mathematics, or a related field. GPA of at least 3.0 on a 4.0 scale. Proficiency or familiarity with programming languages such as: Python C++ C# Desired Skills: Experience with version control systems (e.g., Git). Thorough knowledge of modeling and simulation methodologies is desired, especially when developing experimental designs, executing study plans, and constructing scenario elements. Strong problem-solving skills and an interest in developing software tools for real-world applications. Familiarity with simulation or modeling software. Ability to communicate technical concepts effectively to both technical and non-technical audiences. Clearance:* Ability to obtain/maintain a US government security clearance. Please note: US Citizenship is required for this position. #MTSI The pay range for this position is $19.00/hour - $23/hour; however, base pay offered may vary depending on established government contract ranges, job-related knowledge, skills, and experience, and other factors. MTSI offers a full range of medical benefits, 401k, ESOP, paid time off, and other benefits, dependent on the position offered. Base pay information is based on market location. Applications will be accepted on an ongoing basis. This posting will be renewed periodically until the position is filled. Interesting Work: Our co-workers support some of the most important and critical programs to our national defense and security. Values: Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry. 100% Employee Owned: We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year. Great Benefits - Most Full-Time Staff Are Eligible for: Starting PTO accrual of 20 days PTO/year + 10 holidays/year Flexible schedules 6% 401k match with immediate vesting up to $9k annually Semi-annual bonus eligibility (July and December) Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account Up to $10,000 in annual educational reimbursement Other company funded benefits, like life and disability insurance Optional zero deductible Blue Cross/Blue Shield health insurance plan Track Record of Success: We have grown every year since our founding in 1993. Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide. For more information about MTSI, please visit www.mtsi-va.com MTSI embraces nine core values including our first core value of Employees come first. Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law. MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities.