Principal Software Engineer (C++, Python)
About The Position
Fantom Corporation is a mission-focused organization supporting critical programs across the defense and intelligence community. We partner with our customers to deliver high-impact technical solutions while fostering a culture built on trust, expertise, and long-term career growth. We are seeking a Principal Software Engineer (C++, Python) to lead the design and development of advanced, high-performance software systems. This role focuses on building full stack solutions that support real-time processing and communications systems, with an emphasis on low-level performance and scalability. The ideal candidate has deep expertise in C/C++ and Python development, experience working in real-time and communications environments, and a strong background supporting complex, mission-critical applications.
Requirements
- Must be fully cleared with a recent MD polygraph
- Must be willing and able to work fully onsite at the location listed in this posting
- Bachelorâs degree in Computer Science or a related field (or equivalent experience)
- 20+ years of experience as a Software Engineer
- Strong experience with full stack development
- Expert-level programming skills in C and C++
- Strong experience developing applications using Python (SWORD experience preferred)
- Experience working with real-time processing systems
- Experience supporting communications systems and architectures
- Exposure to RF systems or signal processing environments
Nice To Haves
- Experience working in distributed or high-performance computing environments
- Familiarity with DevOps practices and CI/CD pipelines
- Experience designing scalable, low-latency systems
Responsibilities
- Design, develop, and maintain full stack applications supporting real-time and communications systems
- Develop high-performance backend components using C and C++
- Build and maintain applications and tools using Python, including SWORD-based environments
- Architect and optimize systems for real-time data processing and low-latency performance
- Support development of software solutions for communications and RF-related systems
- Collaborate with cross-functional teams to define requirements and deliver technical solutions
- Lead system design, integration, and performance optimization efforts
- Troubleshoot and resolve complex technical issues across distributed systems
- Mentor junior engineers and provide technical leadership across development teams
- Support continuous improvement of system scalability, reliability, and maintainability
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What This Job Offers
Job Type
Full-time
Career Level
Principal
Number of Employees
1-10 employees
