Visualization & Simulation Software Engineer (Geospatial/RF Systems)

Visualization & Simulation Software Engineer (Geospatial/RF Systems)

FTS International, LLC (FTS) is committed to providing the Federal Government with quality consultants and support. To ensure mission success we focus on putting our customers first while minimizing corporate bureaucracy on our staff. We provide Subject Matter Experts (SME) free of Organizational Conflicts of Interest (OCI) focused on independent analysis and mission support services within the disciplines of Engineering, Counter Terrorism Operations, Management, Information Technology, Signals Analysis, Administration, Cyber Security and Linguistics.

FTS has an opportunity for a Visualization & Simulation Software Engineer (Geospatial/RF Systems) in Chantilly, VA. The Visualization & Simulation Software Engineer (Geospatial/RF Systems) will develop advanced 3D visualization and simulation tools for geospatial, satellite, and RF-based systems.

Responsibilities

Design and develop real-time 3D visualization platforms using Three.js for:

Satellite orbits and trajectories

Antenna cones, beam patterns, and coverage volumes

Line-of-sight and obstruction modeling

Build full-stack systems connecting Python-based simulation engines to web-based visualization clients (WebSockets, APls, streaming pipelines)

Develop and optimize geometry and spatial algorithms, including:

Coordinate transforms (ECEF, ENU, azimuth/elevation)

Volume intersection

Visibility and occlusion detection

Handle large-scale, time-dependent datasets (interpolation, streaming, preloading strategies)

Optimize rendering performance for high object counts and real-time updates

Architect backend services for simulation, data ingestion, and preprocessing

Guide system design decisions and mentor junior engineers

Required Skills/Qualifications

US Citizen

Ability to obtain a TS/SCI with polygraph

BS STEM (Science, Technology, Engineering, or Math) in engineering discipline

5+ years of software development experience

Strong expertise in JavaScript/Typescript and Three.js (WebGL)

Strong proficiency in Python for simulation, numerical computation, or backend services

Deep understanding of 3D math and spatial reasoning, including:

Vector math, coordinate systems, transformations

Spherical geometry and geospatial calculations

Experience building real-time or near-real-time systems

Strong algorithm development and problem-solving skills, especially for geometry-heavy problems

Experience with full-stack development (REST APls, WebSockets, client-server architecture)

Desired Skills/Qualifications

TS/SCI with polygraph

Experience with:

Satellite systems, orbital mechanics, or geospatial platforms

RF/antenna modeling or signal propagation

Scientific visualization or simulation systems

Familiarity with:

PyVista, VTK, or similar for backend 3D processing

GPU concepts (shaders, GLSL, WebGPU)

Experience with Dockerized deployments and production systems

Background in physics, aerospace, or related technical domains

Expected Salary Range: $90,000 - $120,000 per year. Placement within the range is determined by qualifications, job-related criteria, experience, internal equity and market considerations. In addition, FTS International, LLC has benefits offerings in addition to salary to include Health Insurance, Paid Time Off, Life Insurance, Short Term and Long-Term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.

FTS International, LLC is an Equal Opportunity Employer - vets/disabled.