Is it permissible for me, as a Muslim woman who wears the khimar, to uncover my face when submitting official documents for employment in orphanages or centers for the disabled, where the job requires the relevant employee to see my personal photograph?

It is permissible to apply for a job that does not involve a Sharia violation, and to submit personal photos to the institution to complete acceptance procedures if there is a need for it, provided that the photos are modest and show only what is necessary for identification, and that the concerned employee (if male) does not look at the photo for any purpose other than this.