If you think 'Orthodox Jewish Feminist' is an oxymoron you are in good company. Still, I'd like to make the case for an Orthodox Jewish acceptance of Torah and mitzvot which takes into account the changing role of women in the modern world.
The feminism of the 21st century is not the hysterical outcry of the 1970's with its bra-burning and motherhood rejection and man-hating/baiting. What we are looking for today is the recognition that woman can be judged on their merits and not limited in their opportunities because of their gender. A woman should be able to develop her true potential and be paid equal pay for equal work. This view is widely accepted in academia now and in there is growing acceptance of women in the business world as well. It's about being able to be in a room and be taken seriously and not treated as a decoration. It's about recognizing that sexual harassment in the workplace is not acceptable behavior.
So, what can we do if some of this makes us feel that there is an imbalance between the way we see ourselves in the modern context and the way we want to express our commitment to Judaism and halacha. Some women just 'leave it to the men' keeping all the negative commandments which include keeping Shabbat, kashrut and leaving the synagogue and Torah study to the men. Many Orthodox Jewish women who take this path have rich professional lives but remain on the sidelines of Torah study and public prayer.
One very positive change that has taken place over the past generation is the acceptance and encouragement of higher Jewish learning for women in an Orthodox setting. The well loved and respected Nehama Leibowitz brought the study of the written Torah to great heights and is revered in the Orthodox community both here in Israel and in the diaspora. But her base was in the University and although she brought the values of the beit midrash to the university it did not make the university an option for the study of Torah.
Today we have women's institutions like Matan, Nishmat, Middreshet Lindenbaum where women study and teach Torah on the highest levels. These midrashot have produced a cadre of learned women who have become, in addition to excellent teachers, toanot (counsels who can represent clients in divorce cases heard before rabbincal courts) and yoatzot (advisors regarding hilchot nidda - mikveh family purity and women's health issues). The women who initiate and maintain these illustrious institutions are learned Orthodox Jewish women. They have no formal title which reflects their learning achievements and they are not recognized by any religious distinction.
You can find a lot of discussion back and forth about the move made by Rabbi Avi Weiss of Riverdale NY in granting smicha (ordination?) to a woman and calling her first MaHaRat and then Rabba and what that will do the future of Orthodox Judaism. (See about 20 posts and innumerable comments on Hirhurim; Rabbi Riskin here; Rabbi Herschel Schachter here and many many more.) In Israel, for now anyway, we have not come to this and I don't think it will happen soon. For one thing a rabbi here doesn't have the same communal position (for better and some might say for worse) as a shul rabbi in the US. Having the title just doesn't lead to the same career opportunities.
Make no mistake about it when Rabbanit Malka Piotorkovsky, Rabbanit Oshra Koren, Rabbanit Channa Henkin, Rabbanit Malka Bina and so many others teach us we call them Rabbanit not because of their husband's titles but because of their own achievements. These women have become our spiritual leaders.