Python Engineer (2x week on-site) with Security Clearance

Job Title: Senior Python Engineer Location: Quantico, VA (On-site) Overview: A mission-focused organization is seeking a Senior Python Engineer to support the modernization and sustainment of a secure enterprise technology environment. This role contributes to the development of scalable, secure applications and infrastructure supporting critical operational systems. The engineer will work within a collaborative, Agile team to deliver high-quality solutions that align with evolving technical and security requirements. Key Responsibilities: Development & Engineering Design, develop, test, and maintain Python-based applications and services supporting enterprise systems Write clean, maintainable, and efficient code aligned with established engineering standards and best practices Implement enhancements and new capabilities based on evolving requirements and stakeholder feedback Security & Compliance Ensure applications and code adhere to secure coding standards and established compliance requirements Participate in code reviews and security-focused evaluations to identify and mitigate potential vulnerabilities Support the implementation and enforcement of security controls, policies, and procedures across supported systems Collaboration & Delivery Partner with software engineers, cybersecurity professionals, and program teams to deliver reliable solutions Participate in design and architecture discussions to improve system scalability, performance, and security Provide technical guidance and mentorship to junior team members when needed Testing & Quality Assurance Develop and maintain unit and integration tests to ensure application reliability and performance Troubleshoot, debug, and resolve technical issues in a timely manner Contribute to automated testing efforts and continuous integration workflows to improve delivery efficiency Documentation Create and maintain technical documentation, including code, APIs, and system design artifacts Document development processes, procedures, and system configurations to support long-term maintainability Ensure documentation remains accurate, clear, and up to date Continuous Improvement Stay current with emerging Python technologies, tools, and development practices Identify opportunities to improve system performance, security posture, and overall user experience Actively participate in Agile ceremonies such as sprint planning, stand-ups, and retrospectives Required Qualifications: Bachelor's degree in Computer Science, Software Engineering, or a related field (or equivalent experience) Active TS/SCI clearance IAT Level II certification (e.g., Security+) 3–5 years of hands-on experience developing Python-based applications, ideally in secure or regulated environments Strong proficiency with Python and familiarity with common frameworks (e.g., Flask, Django) Experience developing and integrating APIs Knowledge of secure coding practices, authentication methods, and data protection principles Experience with version control systems such as Git Familiarity with relational databases and ORM frameworks Preferred Qualifications: Experience supporting systems within highly regulated or mission-driven environments Exposure to Agile or DevSecOps practices Additional certifications in software development, cybersecurity, or Python-related technologies