I think the only interesting "insight" (If you could call it that) is the popularity of different technologies (though not how its changed in 2018 vs 2017, or how it differs by company, or salary range).
Who's the audience - those looking for jobs in startups? Those who research the industry? Job posting sites use their data as a leading economic indicator - can you point to anything in this realm from this data?
Analysis that would make this more insightful and actionable would include:
a) Show the data compared to previous years, to say for example if hiring by month was actually cyclical
b) Jobs by startup - ie, what percentage of Carvana jobs are eng, sales, finance etc
c) No salary information analyzed - probably the most interesting data is missing
d) A table of top 10 countries by no. postings vs their previous year would give more info to your geo graph
e) Is startup appetite for remote workers growing over time? As a number of jobs and as a percentage of jobs - and what areas are there higher % of jobs going to remote workers?
A good example of a valuable data company is Statista [1] (links to how a geo graph works with a table), where they have this sort of data over a longer time horizon - which provides more actionable insights (eg, is my industry growing, what is the penetration rate?).
If there were more ways this pie was sliced then I could see many interesting insights coming from such a useful dataset!
[1] https://www.statista.com/outlook/15000000/109/consumer-elect...