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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Complex Systems Engineer - **Company:** MITRE Corporation - **Location:** McLean, VA, United States - **Experience:** Expert - **Salary:** $124,400.0 - $155,500.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Geographic Information Systems, Business Analytics Applications, Systems Engineering, ArcGIS (Software), Big Data, C++ (Programming Language), Databases, D3.Js, Data Warehousing, Django Web Framework, Dynamical Systems, R (Programming Language), Python (Programming Language), PostgreSQL, MATLAB, Machine Learning, Mercurial, MongoDB, MySQL, Neo4j, Node.Js, Open Source Technology, Oracle (Applications), Markdown, SAS (Software), Software Engineering, Subversion, Tableau (Software), Web Applications, ReactJS, Flask (Web Framework), Large Language Models, Jupyter, Agentic-AI, Git, Vue.js, Matplotlib, AngularJS, Information Technology, Plotly, Web Technologies, Programming Languages - **Published:** October 14, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9238193/senior-complex-systems-engineer ## About the Role * Typically requires a minimum of 5 years of related experience with a Bachelor's degree in quantitative field such as Data Science, Computational Social Science, Mathematics, Statistics, Operations Research, Geospatial Science, Computer Science, Software Engineering, Economics or 3 years and a Masters Degree; or a PhD with relevant experience who can immediately contribute at this job step. * Excellent written and verbal communication skills. * Demonstrated ability to formulate rigorous models based on loosely defined or underspecified research questions and requirements. * Demonstrated expertise in using Agentic-AI and at one or more of the following paradigms: agent-based modeling, discrete event modeling, system dynamics, or applied statistical modeling/machine learning for complex systems. * Applied experience in modeling and analysis of spatiotemporal datasets. * Experience manipulating large datasets with at least one modern programming language or business intelligence platform (e.g., Python, R , SAS, MATLAB, Java, C++). * Experience leveraging COTS tools or writing programs to visualize multi-dimensional data using tools like Tableau, ggplot2, Plotly, matplotlib, seaborn, or D3.js. * Ability to apply, modify, and formulate algorithms and processes to solve challenging problems. * Must be eligible to obtain and maintain a Top Secret/SCI U.S Government issued Security Clearance. Per the U.S. Government's eligibility requirements, you must be a U.S Citizen to be considered for a security clearance. * This position requires a minimum of 3 days a week on-site., * Experience developing models using multiple methodologies. * Demonstrated experience leading stakeholder/funder facing engagements and providing relevant day-to-day tasking for one or more junior staff. * Applied experience developing interactive visualizations or configuring dashboard applications using open source web technologies (e.g., Angular, Vue, react, D3.js) or other frameworks (e.g., Shiny, Plotly Dash). * Prior experience working with databases (e.g., PostgreSQL, Oracle, MySQL, MongoDB, Neo4j). * Prior experience developing programmatic solutions in a collaborative environment (e.g., Git, Mercurial, SVN). * Familiarity with ArcGIS or other GIS software or analytic tools. * Experience using notebooks (e.g., Jupyter, R Markdown, Zeppelin). * Experience developing data-intensive full stack containerized web applications using Node.js, Flask, Django or other technologies or demonstrated ability manipulating large datasets and time series data. * Comfort with modern AI tools (e.g., large language models) and their application, evaluation, and validation. * Active TS, TS/SCI or TS/SCI with polygraph. ## Description * Be passionate about formulating and developing models and simulations of real world problems involving complex dynamic systems. * Have an innate curiosity and interest in developing research questions and testing hypotheses with open ended tasking. * Work with a spectrum of government sponsors to gain understanding of their challenges, evaluate possible solutions, and conduct insightful, actionable analyses. * Support development and application of a variety of analytic models to sponsor challenges, with a willingness to adapt and learn in a fast-paced environment. * Present results in an intuitive, actionable manner that can be understood by all audiences, regardless of technical expertise. * Remain current on open-source, industry, academia, and US Government techniques and tools for modeling, analysis, data science, visualization, and engineering. * Take initiative in owning aspects of your work and be a collaborative teammate.