General:
* Professional: This is the most straightforward and direct option.
* Competent: This emphasizes their skills and ability to perform their duties well.
* Skilled: Similar to "competent," but focuses more on their technical expertise.
* Efficient: This highlights their ability to work effectively and get things done.
* Effective: This describes their ability to achieve desired results.
More specific:
* Dignified: This describes someone who maintains a sense of decorum and respect in their behavior.
* Impeccable: This emphasizes the flawless execution of their work and their adherence to high standards.
* Efficacious: This describes someone who produces the desired effect in a way that is both efficient and effective.
* Astute: This emphasizes their ability to make good judgments and decisions.
* Diplomatic: This describes someone who is tactful and skilled in handling interpersonal relationships.
Other options:
* Dedicated: This highlights their commitment to their work.
* Reliable: This emphasizes their dependability and trustworthiness.
* Ethical: This describes someone who adheres to moral principles in their professional conduct.
* Integrity: This describes someone who is honest and has strong moral principles.
The best word to use will depend on the specific context and the qualities you want to emphasize.