What is the ruling on working in computer programming for an IVF hospital in Western countries?

For the validity of a lease (ijarah), it is stipulated that the work must be permissible and not used to assist in disobedience (ma'siyah). Thus, it is not permissible to transport alcohol, or to play musical instruments (for forbidden purposes), or to lament (in a forbidden manner), just as impermissible benefits are not allowed. It is necessary to inquire about the hospital, for fertilization includes permissible forms, such as insemination with the husband's sperm, and impermissible forms, such as fertilization from an unknown man or surrogacy. If the majority of the hospital's work is permissible, then there is no harm in working there, provided one does not directly engage in what is forbidden. However, if the majority is impermissible work, then it is not permissible to work with them.

Dr. Yusuf Al-Shubaili was asked about working in a company whose products might be used by entities involved in disobedience, such as usurious banks. He replied:

If the original activity of the company is forbidden, such as usurious banks, then working for it is absolutely forbidden. However, if the intended activity of the company is permissible, and it might engage in some forbidden activities, then it is permissible to work there under the following conditions: The product must not be specifically intended for a forbidden matter, or predominantly used for it. The employee must not directly engage in the forbidden work himself, as providing services to usurious banks is forbidden.

If it is not highly probable that the work necessitates direct engagement in forbidden activity, due to its rarity or the possibility of abstaining, then there is no harm in working there.