Software Engineer, Senior with Security Clearance

What Impact You'll Have GRVTY is looking for a Senior Software Engineer to join a small, technically focused team supporting national security missions at a customer site in Dayton, Ohio.

• on engineering work
• you will be designing and building Python-based software tools that support optical signature modeling, spectral data analysis, and machine learning-enabled sensor workflows.

• translating complex technical requirements into functional, maintainable software.

We want someone who is technically sharp, can operate with a degree of autonomy, and understands that the software they build has real downstream impact on mission outcomes.

• Design, develop, and maintain Python-based software tools supporting optical signature modeling, spectral sensor data processing, and analytical workflows.
• Work with sensor physicists, data scientists, and machine learning engineers to translate technical concepts and mission requirements into working software.
• Build and optimize data pipelines for ingesting, processing, and analyzing large-scale scientific and sensor datasets.
• Develop and integrate machine learning workflows
• including training data preparation, model integration, and evaluation
• into operational toolsets.
• Create clear software architecture documentation, workflow diagrams, and code structure so tools can be maintained, extended, and transitioned effectively.
• Test, validate, and troubleshoot algorithms and software modules across development and deployment environments, including classified workspaces.
• Manage and maintain Git repositories with discipline
• clean commits, meaningful documentation, and reproducible builds.
• Contribute to a culture of technical rigor: peer reviews, coding standards, and honest engagement with complex problems.

• Active Top Secret clearance with ability to obtain SCI and CI polygraph.
• Bachelor's degree in Computer Science, Engineering, Physics, Mathematics, Data Science, or a related STEM field.

• 9+ years of professional software development experience, with demonstrated focus on scientific computing, algorithm development, data processing, or related technical domains or 7+ years of experience and a Masters degree
• Expert-level Python programming, including object-oriented design, modular architecture, and production-quality code.
• Experience developing software for data-intensive workflows
• sensor data, scientific data, simulation, or equivalent.
• Ability to work from technical or scientific requirements and produce well-structured software architecture, logic flows, and implementation plans.
• Comfortable operating in both Windows and Linux environments, including secure or classified customer workspaces.
• Familiarity with source control and development tooling: Git, GitLab, Bitbucket, Jira, Jenkins, or equivalent.
• Strong communication skills
• able to work directly with domain experts who are not software engineers and translate what they need into software that actually works.

• Experience with optical signature modeling, EO/IR sensor data, spectral analysis, or hyperspectral data processing.
• Familiarity with machine learning frameworks and workflows: PyTorch, TensorFlow, scikit-learn, or equivalent.
• Experience with scientific Python libraries: NumPy, pandas, OpenCV, SciPy, or similar.
• Background in signal processing, image processing, or remote sensing data workflows.
• Experience with simulation, modeling, or mission analysis software in a defense or intelligence context.
• Familiarity with ML/Ops practices
• training pipelines, data labeling, model evaluation, and deployment workflows.
• Experience integrating algorithms into existing operational software suites.
• Proficiency in a secondary technical language: C, C++, MATLAB, Java, or Rust.
• Advanced degree in a relevant technical field (Computer Science, Electrical Engineering, Physics, Image Science, or related).
• Prior experience supporting defense, intelligence, or classified customer environments.
• Experience with CI/CD practices, automated testing, and DevSecOps tooling.