Sr Software Engineer

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 Senior Software Engineer to develop, maintain, and enhance complex software systems supporting mission‑critical and high‑performance applications. This role focuses on software development within Linux environments using Python and C++, with opportunities to support advanced DSP and RF‑related technologies.

The ideal candidate has extensive experience developing scalable and data‑intensive applications, implementing advanced algorithms, and collaborating across engineering teams throughout the full software development lifecycle.

• Design, develop, and maintain complex software systems based on technical and operational requirements
• Analyze user and system requirements to derive software design and performance specifications
• Develop new software features and enhance existing applications to improve functionality and performance
• Debug and resolve software defects, integration issues, and system performance problems
• Implement and optimize algorithms to meet strict timing, resource, and interface requirements
• Integrate software into new and existing systems and operating environments
• Develop and maintain database interfaces, queries, and data processing solutions
• Support testing, validation, and quality assurance activities for software components
• Create and maintain technical documentation, including software and system design documentation
• Collaborate with system engineers and hardware engineers to support integration and performance objectives
• Participate in software architecture discussions, technical reviews, and process improvement initiatives
• Lead or support software development teams and ensure delivery aligns with project goals and standards
• Coordinate software installation activities and monitor operational system performance

• 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
• Bachelor’s degree in Computer Science or related discipline (or equivalent experience)
• 14+ years of experience as a Software Engineer supporting programs of similar scope and complexity
• Strong experience developing software in Linux environments
• Strong programming experience in Python and C++
• Experience designing and maintaining complex software systems and applications
• Experience implementing and optimizing algorithms for performance‑critical applications
• Experience with software testing, debugging, and troubleshooting
• Experience working with structured data, databases, and system integrations
• Strong understanding of software development methodologies and best practices

• Experience with Digital Signal Processing (DSP) or RF‑related systems
• Experience working in real‑time or high‑performance computing environments
• Experience leading technical teams or mentoring junior engineers
• Familiarity with Agile software development environments
• #CJ