Principal Software Engineer (C++, Python)

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.ResponsibilitiesDesign, develop, and maintain full stack applications supporting real-time and communications systemsDevelop high-performance backend components using C and C++Build and maintain applications and tools using Python, including SWORD-based environmentsArchitect and optimize systems for real-time data processing and low-latency performanceSupport development of software solutions for communications and RF-related systemsCollaborate with cross-functional teams to define requirements and deliver technical solutionsLead system design, integration, and performance optimization effortsTroubleshoot and resolve complex technical issues across distributed systemsMentor junior engineers and provide technical leadership across development teamsSupport continuous improvement of system scalability, reliability, and maintainabilityRequired QualificationsMust be fully cleared with a recent MD polygraphMust be willing and able to work fully onsite at the location listed in this postingBachelor’s degree in Computer Science or a related field (or equivalent experience)20+ years of experience as a Software EngineerStrong experience with full stack developmentExpert-level programming skills in C and C++Strong experience developing applications using Python (SWORD experience preferred)Experience working with real-time processing systemsExperience supporting communications systems and architecturesExposure to RF systems or signal processing environmentsDesired QualificationsExperience working in distributed or high-performance computing environmentsFamiliarity with DevOps practices and CI/CD pipelinesExperience designing scalable, low-latency systems#CJFantom Corp is a Software Development, Agile Cloud, Cyber Security (Risk Management, Assessments & Authorization (A&A)), Data, AI Platform (Computer Vision Models), Podcasting Media Services, and IT Services provider. Established in 2015, Fantom Corp serves Federal customers with top-notch Cybersecurity Architects, Data Scientists/Analysts, Software Engineers/Developers, DevSecOps Engineers, Project Managers, Identity, Credential Access Management (ICAM) services , and Cloud-certified practitioners. We excel in delivering emerging technologies such as Artificial Intelligence (AI) and Machine Learning (ML) with a focus on identifying trends, object detection, and classification of structured and unstructured data. Fantom Corp possesses mastery in all aspects of digital audio production. We lead in the ideation and creation of efforts for clients who want to harness the power of podcasting. We guide them in selecting the right show format for their needs and goals. As a Small Business, we possess the innovation, speed and flexibility to meet your requirements.We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.