てが手掛tegaけるkeruて手teがけるgakeru
1.
To directly engage in or tackle a task or project oneself, often demonstrating personal involvement and initiative.
2.
To provide care, guidance, or training to someone or something, nurturing their growth or development through personal attention and support.
3.
To take responsibility for and oversee the execution of a job or role, often implying a sense of ownership and accountability in the process.
4.
To develop or create something from start to finish, highlighting one's hands-on experience and expertise in the field.
Example:
私は４年前からこの仕事を手がけています。