Senior Software Engineer (STK/Mission Analysis)
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.
- 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
- 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)
About NextGen:
NextGen Federal Systems is an innovative technology and professional services provider specializing in advanced software solutions and comprehensive mission and business support services. We work in close collaboration with our customers to truly understand their business and mission goals. Our approach is to design, build, implement, and manage solutions that measurably improve our client’s organizational performance. We have established and foster a corporate culture where we:
- Treat employees with fairness and respect regardless of their position, sexual identity, race, or tenure.
- Communicate the importance of our mission and our employees’ contributions to it, ensuring they understand how their job role contributes to the greater good.
- Openly promote and communicate our ideas for change and adaptability.
- Strive to achieve results as an organization.
- Hold employees accountable to their commitments and provide incentives that encourage positive and productive behaviors.
- Value the talents and contributions of our employees as the key factor for our success.
- Create an environment where people can engage at all levels.
- Encourage people to take risks and allow them to make mistakes.
Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities.
Average salary estimate
If an employer mentions a salary or salary range on their job, we display it as an "Employer Estimate". If a job has no salary data, Rise displays an estimate if available.
Experienced platform engineer needed to lead and scale Signifyd's GCP/Kubernetes cloud platform, building self-service tooling, AI-driven automation, and robust observability for a global commerce product.
K2 Space is hiring a Senior Embedded Firmware Engineer to design, implement, and validate low-level firmware and bring-up for custom high-performance SoCs used in next-generation satellites.
Senior technical leader sought to shape LinkedIn’s core infrastructure strategy and lead cross-team initiatives across networking, storage, and messaging at massive scale.
Labcorp seeks an entry-level Software Engineer I in Bloomfield, CT to develop embedded and application-level software for laboratory robotic and automation systems.
Lead the architecture and implementation of LinkedIn’s network access control platform to automate secure, policy-driven connectivity across cloud and on‑prem production environments.
SEI is hiring a Full Stack Software Engineer II to build cloud-native investment systems using .NET, React, TypeScript and AWS in a microservices architecture.
AVEVA is hiring a Distinguished AI Tech Lead to shape and operationalize frontier AI capabilities across industrial products, bridging advanced research and production delivery.
Lead performance and scalability for Veza’s Access Graph platform as a Senior Staff Software Engineer and technical lead, driving benchmarks, observability, and cross-team architectural decisions.
U-Haul Mobile is hiring an iOS Developer Intern to work with Swift and Xcode on customer-facing and internal apps, gaining hands-on experience across the full mobile development lifecycle.
Wellmark is hiring a seasoned Platform Engineer to design, build, and scale agentic AI platforms and infrastructure that enable autonomous, enterprise-grade AI workflows.
Design and deliver full-stack, production-grade AI agent features at Workday—building scalable front-end and backend solutions that simplify HR and finance workflows for millions of users.
Senior product-minded engineer needed to prototype, architect, and de-risk browser-based 2D/3D CAD and engineering-data systems for a remote-first AI platform used by major OEMs.
Lead modernization and secure identity/access efforts for enterprise applications at M&T Bank, driving cloud migrations, containerization, and engineering best practices.
🔮
Hi, I'm Risa! Your AI Career Copilot
you, just ask me below!
