Sam Scott and Graham Neray posted a useful post on the Stack Overflow blog describing the best things to do or watch out for when developing or deploying a REST API.
Justin Etheredge posted a wisdom post with 20 software engineer lessons from 20 years on the job. My favourite of the list is #20: Always strive to build a smaller system.
Thomas Stringer published an excellent set of questions that every software developer can/should ask when joining a new team. Some of these could really cut straight through any inefficient, or missing, onboarding process.