As chief engineer aboard Mariner, Ravek’s duties ranged from making the duty shift roster for engineering personnel to advising the captain on possible solutions for technical problems. It also was Ravek’s responsibility to ensure the starship was functioning at optimum capacity. All other engineers reported to him, and he supervised all projects where Mariner’s systems were upgraded.
Ravek met Tara Leilani while serving on the Horizon. She recommended him to Captain Jenan Gage for the position of chief engineer on Mariner. The two knew each other quite well. Ravek recognized that Leilani interacted differently with him than with others, but was never willing to face any emotions. ("A New Threat")
Character biography on Mariner’s official site