A "Hell Yeah" inspiration is really just evidence that you have lined up with something. If you're not feeling that sort of rush to act then it's evidence that you have some resistance on that subject present in you.

You can feel knowing/freedom around a subject or doubt/worry/fear around a subject. In other words, you can be in the vortex on some subjects and out on others.

If you're feeling thirsty you will feel inspired to go to the water tap or to the fridge to get yourself a drink. You act effortlessly and instantly, nothing stops you because you KNOW that water will be there for you. You asked and you received, instantly.

If you're not feeling that same desire to just go and get the other things that you want in life now, today, then you need to clear resistance on the subject or get in the vortex consistently and habitually and act from there.

Once you're in the vortex most of the time ALL subjects that are important to you feel like the water because you're vibrating inside the vortex where all those things are. You ask and KNOW you will get what you desire, because you're in the vicinity of those things. You can see them right there, just like you can see the water now, instantly.

In the example you gave regarding jobs, the evidence is showing you that the person in the example is closer to knowing on the subject of civil engineering and closer to doubt (or lower down the scale) on IT.

You have to make IT feel as sure to you as the civil engineering does. That will take a little practice, that's all. There's more momentum and sureness on the civil engineering subject. More than likely because of holding the degree in that subject.

EDIT

The subject in the example is closer to knowing on the subject of civil engineering because of the manifestations in that area (job interviews). The reluctance to act is evidence of resistance in regards to not wanting to work in that field. We often manifest things that we do not want, unconsciously.

You should probably read this question and answer thread because I think it is related to your question.

Personally, I don't think I have ever felt like "Hell Yes" from a bad feeling place. You know what I am going to say next. You need to get in the vortex first and then take action.

I think that the most important thing of all is how you feel when you are taking action. That is what will determine the outcome.

To clarify in your situation, the fact that this IT related job does not feel like "Hell Yes" is an indication that this is not the right course of action for you at this moment in time. You might decide that you still want to take that action from a bad feeling place. From personal experience, the outcome is usually not one that will bring you the job experience you are after. You might end up reporting to the worse manager ever. (I have been there :-))

Now, if the same action was an inspired action that you felt compelled to take as a result of vortex alignment work, then it would be impossible for this course of action not to have a favorable outcome.

EDIT

I have just spotted an answer by Stingray that will shed some more light on the subject. I have quoted a snippet from it below:

If you spend the majority of your time in the "higher" emotions like Optimism, Happiness etc, the inspiration will genuinely feel like inspiration. It will feel like positive nudging in a certain direction because you are interpreting the inspiration through a relatively clear personal vibrational filter.

But if you are lower down on the scale generally, for example in anger, depression, you can interpret those same inspirations as stern warnings or commands.

All I can say Kakaboo is that I experienced at least 4 major situations in my life where I felt "Hell, yeah", each of which was an inspired action, and each led to dramatic and long-lasting improvement to my life.

When these events took place, I didn't know anything about the vortex and I was mostly a very unhappy and angry man.

All those events gave me something that I had asked for in my manifesting box, and each contributed to strengthening my belief in LOA. Each of those events felt like a miracle, based on the way they unfolded.

I think you can experience a 'Hell Yes' outside the Vortex, because everybody receives a Hell Yes now and then. But, would this Hell Yes outside the Vortex also would have been a Hell Yes inside the Vortex? I think the "what was I thinking' situation applies there. When you are in the higher vibrations and something is a Hell Yes, it would be something that will amplify your current vibration and bring you further. When outside the Vortex and something feels like a Hell Yes, it will also amplify your vibration, but the other way around. I think it all has to do with true feeling, being clear and honest to yourself. Some things could be an answer to a need and it will feel like a Hell Yes, but will it also be a Hell Yes to the Wholeness that you are?