Modern Logo Design for Keytron

I'm seeking a graphic designer to create a contemporary logo for my electronic security product brand, Keytron. The logo should incorporate elements such as a key, a lock, and a shield.

Key Requirements:
- Proficient in modern graphic design software
- Experience in creating minimalist yet impactful logos
- A strong portfolio demonstrating previous work in brand identity design

Please provide examples of previous modern logo designs and brand identities you've created.