I am not a professional astrologer. I am a long time student of astrology. I just wanted to give another kind of reading on the chart, to add dimension.
The concentration of planets in the first 3 houses, or that matter the first 6, says you need to pursue work that rewards you for being somewhat subjective, some might say self centered, or another way to put it, is that your are concerned with individual identity and its development. So, a counselor, a teacher, a healer, a preacher, would be like this. But a counselor, healer or preacher would tend to have more strength in the water signs, than you have. Your strength in the elements, fire, earth air, water, is in AIR -- the mental, communication and social element. This supports going for professions which require challenging rounds of education, like medicine and engineering. And AIR is on the midheaven, which can often describe characteristics of your life long reputation, therefore your profession. You have Libra there. But there are no planets in the house. Libra on the Midheaven is all about striking a fair deal with others. Peacemaking. The Ruler of that house is another indicator of your profession-- and it is Venus, in the 2nd. The 2nd house is about personal resources, like money and confidence. So it would seem that fair deals is even more accentuated.
The powerful impact of Pluto on your Ascendant opposite Saturn cannot be ignored. You have a powerful presence, for good or evil. The opposition is not so unique, because they are both slow moving planets. This means that some prevailing cultural trends at the time you were born, made a huge impact on your appearance and style, as well as on the relationships you make. And it is not an easy situation for your Sun at all. With a third house Sun you could easily be caught in issues of 'peace' among your siblings or neighbors all the time. You may be driven to appear to be an exceptional level of human being, and heavily structure your major relationships with others (partnerships and spouse included) to meet same exceptional standards, but the combination requires opposing actions -- impossible to do. Making trade-offs, living with compromise, is necessary. You spend your entire life refining these skills. This takes and makes a lot of energy. You can work for peace, or war. Your choice. Balancing relations is what Libra does. The Pluto Saturn opposition in your chart says the issues are prevalent in the culture around you, but they make a very personal impact on your life. Things beyond your control, but you become a significant pivoting point for making relations work or fail. The hope would be that you would use your power for benevolent purposes. The challenge will be, to know what is benevolent. So study with the trusted wise spiritual guides, don't go it alone, and don't go hide. The concern is that Pluto on your Ascendant rules the 12th, a house of selflessness, and for some this can be hopelessness, sorrow and losses, and seeds of evil, while for others it can be identifying with the need for good will to be done. Your choice. Study wisely! That lovely Sagittarius Ascendant could support you well !
It is very important to direct your Pisces Sun into wise directions, for it needs to believe in the realm beyond the tangible. Some do this with recreational drugs or alchohol, which produces all the problems of addiction. Choose the direction of going with your beliefs and imagination wisely. Practice your beliefs with reputable groups and leaders. Be extremely wary of going in the direction of 'hidden' organizations for pursuing your beliefs. You want to groom your potential under proper and promising guidance. You want to give your trust, allegiance, to meritable groups.
You have Sun in Pisces and Pluto in Sagittarius, and Jupiter - Ruler of the Chart - in the 8th. This indicates a strong mix of life and death and spirit and passion, and a desire for purification. With limited planets above the horizon, you need to choose alliances who do those functions for you, with you in mind, while you concentrate on the first 3 houses, development of the individual. You may at times think you are powerful enough to do it all alone, but indeed you too need a network of allies.
If you can honor your inherent need to express your chart for good purposes, then that is the direction to take for a profession. I see more emphasis on spiritual development of the individual, as being a promising theme for profession. But there is still the shortage of water signs, and emphasis on air. Perhaps your role is more along the lines of teaching. (or writing and communicating) Moon in Gemini in the 6th would support this, very well.
The fields of medicine and engineering are so huge, you could find a way to do all the above in either of them. These are highly competitive fields. Pursuing them without intending to come out at the top of the class is not advised. You have Mars in the first to support some competitive urges, to help.
In general, look to the 2nd, 6th and 10th houses for indications of profession, and combine with characteristics of Sun, Moon, the condition of the Ruler of the Chart. Matters regarding your digital work would relate to Neptune and Pisces, and Uranus. I must stop now, before addressing those.
Please send me feedback on this. I am just a student. This is complicated exercise of interpreting a chart and conveying the information properly.