Modern Yellow-Black Software Logo

My company develops a cloud-based platform that tracks time and automates billing, and I’m looking for a fresh logo that instantly signals speed and accuracy. I want a modern, sleek feel—think clean geometry, balanced proportions, no dated gradients. The core palette should be yellow and black; those two colours must dominate so the mark is unmistakable at a glance, whether it’s sitting on a dark dashboard header or printed on light stationery.

Here’s what I expect as the final package:
• Primary logo in vector format (AI / SVG) plus high-res PNGs.
• Horizontal, stacked, and square icon variants.
• A monochrome version that still reads well.
• A quick brand sheet listing colour codes and the chosen typeface.

If you can supply a favicon or app-icon cut too, even better, but the main focus is the hero logo itself. Show me a couple of concept directions first, then we’ll fine-tune one until it’s perfect.