Senior Software Engineer

Senior Software Engineer supporting a Multimode Threat Engagement Simulation Platform with a Julia backend, React/TypeScript/CesiumJS frontend, and CI/CD pipelines, focused on high performance scientific computing.

Responsibilities

• Develop and optimize the Julia based physics computation service, including trajectory integration with RK4 and RK45 via DifferentialEquations.jl, SGP4 orbital propagation using SatelliteToolbox.jl, and a Monte Carlo driver that uses Threads.@threads for parallelism.
• Profile performance-critical paths and benchmark throughput and latency to meet targets, such as executing 10,000 Monte Carlo runs within a defined wall-clock window.
• Integrate ONNX.jl surrogate model inference to enable real-time parameter sweeps and ensure inference latency remains under 1 ms.
• Generate CZML from physics outputs to visualize trajectory arcs, satellite orbital paths, and coverage footprints in time-dynamic Cesium visualization.
• Design and maintain the mission data model, including JSON serialization, a versioned file format with backward compatibility, and cross-platform path handling for Windows and Linux.
• Implement the HTTP.jl API layer with clear request and response schemas, robust error handling, and structured logging.
• Build React/TypeScript components for the mission planning interface, including tabbed mission overview, asset and task tree views, mission parameter forms, and the analysis panel.
• Integrate and maintain the CesiumJS/Resium 3D globe, including asset markers, trajectory rendering, satellite ground tracks, coverage footprints, and CZML-driven animation with the Cesium timeline.
• Manage frontend state for mission data, UI state, and asynchronous physics query results using appropriate patterns for a data-heavy desktop style application.
• Develop data driven analysis visualizations for trajectories, Pk curves, and Monte Carlo distribution charts using Recharts, Plotly.js, or equivalent.
• Maintain the CI/CD pipeline in GitHub Actions, producing Windows NSIS installers and Linux AppImages from a single codebase.
• Manage PackageCompiler.jl sysimage builds to generate the Julia physics server binary for both target platforms.
• Maintain electron-builder configurations and platform specific packaging scripts; validate installer behavior on clean Windows and Linux test environments.
• Implement build-time embedding of ONNX model files and asset resources, and manage versioning of bundled artifacts.

Requirements

• U.S. citizenship
• Active Secret Clearance
• B.S. in Computer Science, Software Engineering, Electrical Engineering, Physics, or a related STEM field
• 5+ years of software development experience with demonstrated depth in at least one area: scientific computing, numerical simulation, high performance computing, or data intensive desktop applications

Technologies

• Julia
• DifferentialEquations.jl
• SatelliteToolbox.jl
• ONNX.jl
• CZML
• CesiumJS
• Resium
• HTTP.jl
• JSON
• React
• TypeScript
• Recharts
• Plotly.js
• GitHub Actions
• PackageCompiler.jl
• ONNX Runtime
• electron-builder
• NSIS
• AppImage
• Python with NumPy/Numba/Cython extensions

Location and Travel

• Location: Colorado Springs, CO or Boston, MA, with hybrid work options
• Travel: approximately 15-20%

Benefits

• Medical
• Dental
• Vision
• Life insurance
• Tricare supplement
• Short-term disability
• Long-term disability
• 401(k) match
• Flexible spending accounts
• Health savings accounts
• Employee assistance program
• Learning and development benefit
• Paid time off
• Holidays