The Senior Software Engineer designs and integrates STK applications for mission analysis, focusing on software development, simulation result interpretation, and client interaction.
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
Qualifications
- 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)
Preferred Qualifications
- 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)
Top Skills
Docker
Flask
Git
Python
React Js
Rest Apis
Stk
Similar Jobs
.png)
Cloud • Insurance • Payments • Software • Business Intelligence • App development • Big Data Analytics
As a Business Systems Analyst, you will map and translate customer data to ACORD standards, support implementations, and enhance processes while collaborating with both internal teams and customers.
Top Skills:
APIsGitJIRAJSONOxygenPostmanXMLXslt
Cloud • Insurance • Payments • Software • Business Intelligence • App development • Big Data Analytics
The Data Migration Engineer migrates customer data into SaaS products, ensuring data quality and business continuity while collaborating with teams and managing customer requirements.
Top Skills:
BigQueryETLGoogle Cloud PlatformJIRASharepointSQL
Artificial Intelligence • Cloud • Computer Vision • Hardware • Internet of Things • Software
The Senior Knowledge Management Specialist will drive KM strategies, manage multiple projects, enhance KM processes with AI, and support cross-team collaboration.
Top Skills:
Ai PlatformsCmsConfluenceJIRAKmsShowpadTableauZendesk
What you need to know about the Colorado Tech Scene
With a business-friendly climate and research universities like CU Boulder and Colorado State, Colorado has made a name for itself as a startup ecosystem. The state boasts a skilled workforce and high quality of life thanks to its affordable housing, vibrant cultural scene and unparalleled opportunities for outdoor recreation. Colorado is also home to the National Renewable Energy Laboratory, helping cement its status as a hub for renewable energy innovation.
Key Facts About Colorado Tech
- Number of Tech Workers: 260,000; 8.5% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Lockheed Martin, Century Link, Comcast, BAE Systems, Level 3
- Key Industries: Software, artificial intelligence, aerospace, e-commerce, fintech, healthtech
- Funding Landscape: $4.9 billion in VC funding in 2024 (Pitchbook)
- Notable Investors: Access Venture Partners, Ridgeline Ventures, Techstars, Blackhorn Ventures
- Research Centers and Universities: Colorado School of Mines, University of Colorado Boulder, University of Denver, Colorado State University, Mesa Laboratory, Space Science Institute, National Center for Atmospheric Research, National Renewable Energy Laboratory, Gottlieb Institute
