Wyndee Parker currently holds the position of national security adviser to House Minority Leader Hakeem Jeffries (D-NY). In this capacity, she acts as a central figure in the Democratic leadership's approach to national security policy. Her responsibilities are broad, requiring her to oversee the legislative and oversight activities of several major House committees, including the Armed Services, Intelligence, Foreign Affairs, and Homeland Security committees. Additionally, she manages the work of the corresponding Appropriations subcommittees that fund these areas.

Beyond her internal committee oversight, Parker serves as a critical liaison between the House Democratic leadership and the executive branch. Her role requires navigating the complexities of national security issues, which involves balancing legislative priorities with the shifting demands of global events. Because her position involves coordinating across multiple committees, she is tasked with ensuring that the Minority Leader’s office remains informed and active on matters ranging from military readiness to international diplomacy and domestic security concerns. The nature of her work is described as highly variable, with the demands of the position changing daily based on the legislative calendar and current national security developments.