Design and implement immersive soundscapes, effects, and ambient audio tailored for Source Engine. Mix, produce, and adjust levels for dialogue and pre-existing musical tracks to ensure clarity and consistency within the game. Collaborate with level designers to integrate sounds correctly using Hammer's I/O system, aligning audio with key gameplay moments. Optimize audio files for performance while maintaining high-quality output. Experience with Source tools like the soundscapes file system is a plus.