As I describe before here
https://www.linkedin.com/advice/0/heres-how-you-can-stay-ahe..., many roboticists overlook the need for JavaScript in their skill set and tech stack. This is because of the evolution of robotics projects and companies: first you build a prototype and only then do you deploy and scale your fleet. The first part is hard and doesn't require any JS. But the second part is even harder and requires a ton of JS, because without web-tooling you won't be able to operate efficiently. This offers a great opportunity for roboticists to distinguish themselves from others be mastering JS for both the backend (rosnodejs, rclnodejs) and the front-end (React, Transitive Robotics). This sets you apart from both "regular" roboticists and from "pure" web developers.
What I'm trying to say: robotics is a very broad field and your current full-stack skills are needed just as well. And while working on those aspects of the robotics stack you can learn about the rest if you want. But you don't even have to to progress in your career in the robotics industry.
If you want to work on something specific, you can try to build a capability ("full-stack app") on Transitive, the open-source full-stack framework for robotics we've built that works with any robots, esp. ROS ones: https://github.com/transitiverobotics/transitive. Oh and of course learn ROS along the way.