Context

Federal software often handles sensitive data, operates under strict compliance requirements, and must withstand both accidental misuse and deliberate attack. Interviewers ask this to assess whether you can build secure systems by default, not bolt security on later.

Core question

Explain the secure coding practices you follow when building software for federal clients.

Address these points:

1. How do you prevent common application vulnerabilities such as injection, broken access control, and insecure deserialization?
2. How do you handle secrets, authentication, authorization, logging, and dependency management safely?
3. How do you incorporate secure development practices such as code review, testing, and compliance-aware documentation into day-to-day engineering work?

Scope guidance

The interviewer expects a practical engineering answer, not a legal or policy deep dive. Focus on concrete coding and design habits, how they reduce risk, and how you would prioritize them in a production environment.