They wouldn't need a careers page to know who to hire, generally careers pages are for applicants.
So, given the current environment at Twitter, the parent post you responded to seems to have hit the nail on the head. Give things time and it will get back to normal, and we can expect new opportunities to be posted on some sort of careers page for Twitter.
People are really looking hard for reasons to be negative about Twitter and Musk. This careers page isn't one of them...
It's all speculation based on nothing of substance. That's why I asked GP to expand on his thought process.
One of them is for an engineering manager. Half the time I follow that link, I get a 404. Now when I follow it, it takes me to https://careers.twitter.com/en/job-closed.html
The time I did get a result for it and a non-closed page, I exported it as a pdf (searched for a pdf hoster) and uploaded it to https://rose-wynny-98.tiiny.site
For those who don't want to chase such links...
Twitter is what’s happening and what people are talking about right now. For us, life's not about a job, it's about purpose. We believe real change starts with conversation. Here, your voice matters. Come as you are and together we'll do what's right (not what's easy) to serve the public conversation.
Who We Are:
The Data Experience organization of Twitter's data platform is responsible for identifying, deploying, and supporting state of the art data analysis, business intelligence, and behavioral analytics tools that operate at Twitter scale, such as BigQuery, Looker, Druid and Interana. Data Experience is also responsible for tools which help with simplifying data discovery, data management and job scheduling, as well as the data portal that is the main entry point for discovering and managing data inside Twitter.
You will be leading a team that owns Twitter's Metadata system, providing oversight of technology evolution, feature delivery and customer adoption.
(and it continues on)