Software Engineer (Python) with Security Clearance

Shadowgate Partners is seeking a Software Engineer for our client, a leading provider of Signals Intelligence (SIGINT) and specialized communications systems to the Intelligence Community, with over 40 years of deep expertise across strategic and tactical missions. This role is 100% onsite at the client's facility either in Fairfax, VA or Greenwood Village, CO.
Must be willing to obtain an Full Scope Polygraph while working.
Must be willing to travel OCONUS 2–3 times per year for 7–10 days per trip. Position Overview The Software Engineer will design and implement software systems with an emphasis on digital signal processing and secure web-based GUIs. Experience across all aspects of software design, implementation, testing, analysis, and debugging is expected.

Key Responsibilities ● Implement, deploy, and maintain cutting-edge signal processing systems
● Develop secure interfaces and web-based GUIs to control, status, and monitor signal processing systems
● Manage system software configurations and baselines Required ● Bachelor's degree or higher in Computer Science, Computer Engineering, Electrical Engineering, or a related field
● Strong Python development experience in a Linux environment
● Active TS/SCI clearance, with willingness to obtain an FS Poly while working
● Willingness to travel OCONUS 2–3 times per year for 7–10 days per trip
● 4-15 years of experience Preferred ● Experience with JavaScript, XML, and MySQL
● Web application development using Python and frameworks such as Django and Flask
● Packaging and managing software applications with RPM and yum
● Knowledge of network protocols, encryption, and cybersecurity
● Experience in communications or SIGINT systems development and test
● IASAE Level II certification
● Knowledge of communications systems theory, with emphasis on analog/digital modulation and demodulation
● Knowledge of signal processing algorithms and techniques
● Experience with the X-Midas signal processing environment Security Clearance TS/SCI with the ability to obtain Full Scope polygraph after start.

Travel OCONUS 2–3 times per year for 7–10 days per trip. Salary Range $105,000 - $170,000 Benefits - 25% employer 401(k) contribution, fully vested on day one. On a $100K base salary, the company puts $25K into your 401(k).

• An additional 25% Individual Benefits Account (IBA) to cover health premiums and PTO, with any unused balance paid out each January. On a $100K base, the company funds $25K into your IBA. If you use $15K on benefits and PTO, the remaining $10K (less taxes) is added to your January paycheck.
• Medical premiums 100% covered starting January 2027 for salaries under $150,000.
• Employer HSA contributions starting January 2027: $1,250 per year for single filers and $2,000 for married or family filers.
• 8 weeks of PTO inclusive of vacation, holidays, and sick leave.
• 100% paid certifications.
• 100% education reimbursement for tuition and books.