What is your end goal? If it's being hired at a large corporation, you'll find useful advice in lots of other comments here. If you want to go to FAANG, it can

What is your end goal? If it's being hired at a large corporation, you'll find useful advice in lots of other comments here. If you want to go to FAANG, it can still be useful, but open source contributions and learning data structures might be a better use of time. If you're aiming at going to a high-growth early to mid stage startup however, be aware that certifications (especially a lot of them) can be an anti-signal. As a startup hiring manager myself, I view certifications at best as a basic aptitude check, at worst as signal of a personality who is fine with wasting lots of time into learning copypasta knowledge. In that case, you might find a better investment in building presentable side projects. YMMV.