I can make something like 6 solid posts for around 800 words each for you for my bid. Which are much longer than you have now, let's start with test one, if you like it over time we will do more, ok ? Contact me.
That alone should help with SEO over time. I will need access to the website - that's for sure. I can write them about any programming, tech or science topic, I am well versed in that. Take a look into my portfolio here for article samples.
I see you have sort of tech student blog. I have B.S. in applied mathematics, that should help. Later I can take a look at the website about it's design. Something may need changes.