I'm a software developer, and back in late 2016 I was laid off from my job of 15 years. Job hunting became my new job.
I spent the first week bringing my resume and LinkedIn up to speed, and creating a couple of resume variants for different position types (principal SWE, architect, systems engineer). Once I'd cut my four page first draft in half and was reasonably happy with it, I started applying.
I settled into a daily routine where I would spend 2-4 hours actively job-seeking: looking at job sites, talking to friends and professional acquaintances, talking to recruiters, applying to interesting positions, and interviewing. When applying, sometimes I'd use one of my boilerplate resumes, but I'd always try to tweak it if the job description called for specific skills that I had and could emphasize.
I spent the other half of my day "sharpening the knife." I studied info that was often important in interviews but that I didn't often use day to day: data structures, algorithmic complexity, etc. If you don't already have it, I highly recommend a book called
Cracking the Coding Interview. It's targeted for interviews at the biggies: Google,
Amazon, etc., so it covers pretty much everything that you might expect to be asked in a technical interview.
I also wrote code every day. Some days I would refresh my memory on skills that I hadn't used in a while. Other days I would do phone screen problems, where you're given a toy problem and you get 30-45 minutes to design and implement a solution. I mostly used Codility, but there are tons of similar sites out there. It's also a good idea to rubber duck when you do this, as you'll be expected to explain what you're doing in coding interviews, and it's surprisingly hard if you're not used to it.
It took me three months to find a new position. I could have found something faster, but I was selective. As a developer in my late 40s, I wanted a position that put me in a leadership role or gave me an opportunity to get one quickly. A grunt coding spot would have been a path to early, involuntary retirement.
Good luck and I hope my experience is helpful in your search!