Astrodynamics Engineer — Orbit Dynamics & RPO Expert

Apex Tk; Chantilly (VA); On-site; USD 120,000 - 190,000; Full time

Job summary

APEX TK in Chantilly is seeking an Astrodynamics Engineer to join our defense-focused team. You will work with modeling and simulation colleagues on government satellite programs across Earth orbits, applying orbital mechanics and space systems knowledge.

Applicants should have a STEM degree, 2–10 years of space analytics experience, and TS/SCI with CI poly clearance. Proficiency in C++, Python, MATLAB, and related tools is essential, as you will develop analyses, present findings, and support

Qualifications

• 2–10 years of relevant experience.
• Bachelor's degree in STEM or related field.
• Active TS/SCI w/ CI Poly clearance.
• Experience performing space-related engineering analysis using listed tools.

Responsibilities

• Support government satellite programs across Earth orbits with modeling and simulation.
• Collaborate with astrodynamics, propulsion, and HPC experts.
• Develop and present technical briefings to customers.
• Use Python, C++, or similar languages to extend analysis tools.
• Conduct independent trade studies and validate results.

Skills

Orbital mechanics

Data analysis

Communication of findings

Education

Bachelor's degree in STEM

Master's degree in STEM

Tools

C++

Python

R

SQL

PostgreSQL

Linux

MATLAB

VBA

STK

Job description

APEX TK in Chantilly is seeking an Astrodynamics Engineer to join our defense-focused team. You will work with modeling and simulation colleagues on government satellite programs across Earth orbits, applying orbital mechanics and space systems knowledge.

Applicants should have a STEM degree, 2–10 years of space analytics experience, and TS/SCI with CI poly clearance. Proficiency in C++, Python, MATLAB, and related tools is essential, as you will develop analyses, present findings, and support