Minecraft Plugin Development

I'm looking for an experienced Minecraft plugin developer to create an energy chestplate and custom bosses for my server.

Project requirements:
- An energy chestplate with specific abilities or stats (to be discussed)
- Custom bosses that are unique humanoids with special abilities
- Boss abilities: earth abilities, summoning minions, and fireballs

Ideal skills and experience:
- Proficiency in Java and Minecraft plugin development
- Experience creating custom mobs and abilities
- Knowledge of server performance optimization
- Strong problem-solving skills and creativity

Please provide examples of previous work and a rough timeline for completion.