Job position riddles

I'm a vital part of the company's scheme, Working hard, I'm not just in a dream. I follow instructions and play my part, In the IT world, I'm an essential part. Who am I, contributing with glee? I'm the one you'll find, known as the __

I'm a step below the big boss, it's true, Managing projects and people, a lot to do. Coordinating tasks and reaching goals, In the company, I play an essential role. Who am I, leading a team to succeed? I'm the one you'll find, known as

I'm at the top, making decisions that matter, Steering the company to reach for the stars. Who am I in the IT world, leading with might? I'm the head honcho, the one called the ___

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