Recent Graduate – Seeking Recommendations for Tech Recruitment Firms

I recently advised a young graduate to consider working with a headhunter.

In the past, I had positive experiences with Manpower and Volt, but since that was quite a while ago, I’m uncertain about their current reputation and capabilities.

Could anyone recommend tech recruitment companies for a recent computer science graduate specializing in software development?

(Note: This inquiry is for those based in the US.)