Hi,
I remember you asking this question before, when you told the cool story about the man who found his soulmate working in a herb garden (?) thanks to horary (I remembered that story yesterday when I went to a garden centre and wondered what sign it was he saw - taurus?).
So I answered you before, so I'm guessing you didn't like my advice?
You're sun leo, square mars, so you'd like to be active, maybe competitive. Mars in taurus fits with working with plants/gardens/food production etc, mercury, mars, saturn grand trine should be supportive of your goals, in earth signs that would be good in any kind of business, making money, selling something (mercury) that is earthy (taurus, capricorn).
The chart you posted confused me a little, because I don't use whole sign charts & I want to know where pluto is in your chart since that rules your MC (in my opinion, other people might think it's mars).
Scorpio-capricorn is strong in your chart, that is often high finance, accounting etc. Taurus is also often connected to banking and accounting, so that fits too.
Your north node is in the second house, making money, & is in Aquarius, so Aquarius might come into it too, computers, new technology etc.
The north node opposite venus and square the MC might be causing you problems, the MC pulls you one way and the north node pulls you in a different direction, and somehow you'll have to combine the two.
As you mention parallels I'm guessing you know about them already (& you probably know you can find yours out at astro.com extended chart selection natal chart additional tables, they are listed as declinations). From what I know they are interpreted in a similar way to aspects, although they are only considered if they are within one degree, so for example moon parallel saturn has a similar effect to moon conjunct saturn. There is a book that gives interpretations, cookbook style, but I don't know what it is called, there are probably a few.
Alice McDermott/Portman gives advice on how to find your career in your chart here
http://aliceportman.com/your-career-in-your-natal-chart/, specifically she looks at the planet that is oriental before your sun, the ruler of your MC by sign and duad, and the position of the planet that disposes the ruler of your MC.
So, in your case, with the chart you are using, the MC is in scorpio in the duad of aquarius, if we're using mars that is in taurus, in the duad of aquarius again, and disposed by venus in leo, in the duad of virgo. Venus is also your oriental planet so it is significant.
Also for career matters have you tried looking at your progressions? They might tell you when opportunities will come along, and it might be a question of the right job finding you rather than you figuring out the ideal job. Transit wise you've got saturn transiting the 10th house, which is a time to get serious about a career but also means a lot of hard work relating to that, but on the plus side jupiter is trine your natal mars, coming up to conjunct your jupiter and soon to be conjunct your venus. Jupiter transits can be over-hyped in my opinion if we thing they will bring us good things without us having to do anything, but what they do bring is opportunities and more confidence to take up opportunities.
Element wise your chart is predominantly earth and lacking in air, therefore something that involves dealing purely with ideas would not be a good choice, you need to be dealing with practical things. Your fire sign sun and water sign moon are also strong, both being in their own sign.
In the tarot the page of pentacles (earth signs) is described as someone who likes to take things apart just to see how they work, so anything to do with machines, engineering, even processes would be good. How about developing a new process for growing food that will solve the problem of not having enough space to grow food for everyone (I was thinking something like hydroponics, but I think that would need more water significators, so something like that, but without so much water)? Or selling organic veg? Or creating new food products?
Cancer-leo is a good combination for a teacher of young children, so how about teaching children about nature, for example as a ranger or working in a forest school teaching survival skills & bushcraft? Scorpio could come into it because you need to understand psychology in order to be an effective educator. It would also fit with venus and the moon being conjunct jupiter, the planet of educating others.
Going back to scorpio-aquarius how about alternative therapies? Also fits with the moon in cancer.
Or mars in taurus, could be a massage therapist?
By now I have been round in circles and probably confused you immensely, and as you may have guessed this approach has caused me some trouble in finding the ideal career too, but one thing I would recommend is looking at mars (if you prefer to use that as your MC ruler rather than pluto) and seeing which houses are ruled by the planets it makes aspects to, specifically saturn, mercury, sun, and then find a career which combines those things, that's what happened in my case (my MC ruler aspects most of my planets, but is conjunct the ruler of the 5th and the 9th and the job that I have found that fits me best is teaching children from overseas, my MC is gemini, and mercury is in leo, so that is also part of it).