Senior Software Engineer (TS) – Secure Modernization Lead

FANTOM CORPORATION; Chantilly (VA); On-site; USD 130,000 - 180,000; Full time

Job summary

Fantom Corporation is seeking a Senior Software Engineer to support a mission-critical enterprise. This position serves as the principal authority for enterprise software architecture, development standards, application moderization, and secure software delivery across complex environments.

Responsibilities include design, development and testing of applications, establishing architectural frameworks, and leading modernization strategies while delivering scalable, secure and high-performing

Qualifications

• Active Top Secret clearance required.
• Willing to obtain a polygraph.
• 10+ years of experience in application development, including test driven development.
• 10+ years of experience with Python.
• 10+ years of experience across the software development life cycle.

Responsibilities

• Design, develop, test applications while establishing architectural frameworks.
• Develop best practices and create modernization strategies
• This role combines strategic technical leadership with hands‑on engineering expertise to deliver scalable, secure and high performing solutions.

Skills

Python

Education

Bachelor’s degree

Master’s degree

Job description

Fantom Corporation is seeking a Senior Software Engineer to support a mission-critical enterprise. This position serves as the principal authority for enterprise software architecture, development standards, application moderization, and secure software delivery across complex environments.

Responsibilities include design, development and testing of applications, establishing architectural frameworks, and leading modernization strategies while delivering scalable, secure and high-performing