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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # software engineer - **Company:** NextGen Staffing - **Location:** Beavercreek, OH, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Agile Methodology, Cloud Computing, Python (Programming Language), Responsive Web Design, Software Engineering, Workflow Management Systems, Cloud Platform System, ReactJS, Flask (Web Framework), Backend, Git, Information Technology, Modeling and Simulation, Front End Software Development, Software Version Control, Devsecops, Docker - **Published:** September 29, 2026 - **Apply:** https://www.juju.com/job/16_5731bf3d4 ## About the Role * BS or equivalent in Computer Science, Engineering, Mathematics, or equivalent technical degree * 5+ years' prior work experience in the aerospace or defense industry, with demonstrated software development experience * Experience customizing or automating STK-based tools or applications highly desired (including STK, STK Engine, STK Components, and/or Cesium) * Experience integrating tools via APIs (REST or similar) * Proficiency in Python and experience with backend frameworks such as Flask is required * Strong expertise in React JS for building modern and responsive user interfaces is highly desirable * Knowledge of version control systems, preferably Git is highly desirable * Proven experience as a Full Stack Developer or similar role is highly desirable * Capable of self-management and responsibly executing multiple tasks in accordance with priorities and deadlines * Active Top Secret (TS) clearance required (SCI eligibility preferred), * Experience with STK Engine, STK Components, or Cesium * Experience linking STK analyses to MBSE environments (e.g., parameter passing, trade studies, digital thread integration) * Familiarity with digital engineering ecosystems, mission thread development, or model orchestration tools * Experience with Docker, cloud environments, or DevSecOps practices * Frontend development experience (e.g., React) ## Description NextGen Federal Systems, LLC is seeking a Software Engineer with experience in Systems Tool Kit (STK) to support the development and integration of mission analysis and modeling applications. These applications enable multi-domain analysis-including air, space, ground, and maritime systems-by leveraging physics-based modeling and simulation to assess system performance, coverage, communications, and operational effectiveness. Responsibilities include software development, configuration, and execution; result interpretation; documentation; and modification and maintenance of tools and code. The selected candidate must be quick to learn, adaptable, and agile, interfacing directly with end-customers and customer leadership. The software engineer will provide a full range of systems and software engineering to support critical mission analyses. Responsibilities * Develop, customize, and maintain STK-based applications to support mission planning, analysis, and visualization * Integrate STK (Engine, Components, or Desktop) with external tools, models, and data sources to enable end-to-end mission workflows * Implement backend services using Python and support frontend interfaces as needed * Analyze and interpret simulation results, providing actionable insights to engineering teams and stakeholders * Support traceability between mission analysis outputs and system models, ensuring consistency across the digital engineering environment * Support deployment and execution of applications in modern environments (e.g., containerized or cloud-based) * Contribute to documentation, user guides, and technical deliverables * Troubleshoot and enhance existing tools to improve performance, usability, and scalability ## Related Videos - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) ## Related Articles - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Best Countries for Software Engineers](https://www.wearedevelopers.com/magazine/267-best-countries-for-software-engineers)