The process involved (the potential for) four virtual interviews: a "phone" screen with an internal recruiter; an interview with the VP of IT; a team "panel" interview; and a CEO interview. The three interviews in which I had experienced were all conversational.
The job post made a general reference to requirements, including knowledge of any of the common JavaScript frameworks and libraries (Vue, Angular, jQuery, React) as well as experience in HTML/CSS, JavaScript and TypeScript.
The full scope of the tech stack, as well as IDE's and other pertinent information about the job, was revealed in the third interview with the team about a month into the interviewing process. It can therefore take 3-4 weeks before one can fully understand if the job is the right fit.