Pros
Brilliant culture overall — young, energetic, and genuinely fast-paced in the best sense of the word. The leadership team has done this before and they've landed themselves in exactly the right space at exactly the right time. The product really does speak for itself, you can get a demo straight away without having to wade through the usual sales nonsense, which is refreshing.
Very few companies in Belgium are doing anything like this at the moment, and frankly the same can be said across Europe as a whole. There's little doubt this will reach Unicorn status, and when the exit comes, it'll be a significant one.
Cons
Certain products within the platform may be scaling or iterating too rapidly in an attempt to keep pace across virtually every corner of the security landscape, which risks losing deals to more established, niche competitors who've been at it far longer. There are very few management positions and practically no HR to speak of, so issues in that area tend to crop up on a fairly regular basis.
It makes little difference how productive you are or how strong your numbers look, in any role, you can find yourself let go rather swiftly simply for not being in favour with those above you. Management will dress it up as "fast-paced" and "learn by fire," though in reality this sort of culture doesn't hold up well as a company scales. You may also find yourself out the door shortly after completing a major project or putting up good numbers, either because you're no longer required, no longer favoured, or simply because AI is being used to replace headcount - much like everywhere else at the moment. They also hire senior roles mostly outside to their previous network or colleagues, unless you have been at the company for the whole 3 years of its existence.
They are pushing for full in-office attendance globally, which is already squeezing out remote workers who are either currently within the company or hoping to join. It also appears that the leadership and shareholders of Aikido are eyeing a quick exit at the earliest opportunity, much like the Wiz/Google situation (and fair play to them, the money involved is considerable). That said, if a merger does come to pass, your position is far from guaranteed, and to make matters worse, equity isn't on the table for anyone who came on board after the first 100 employees, unless you're at VP level or above I believe.
So if you're considering joining at a more junior level, do go in with your eyes open.