Pros
The company is very open to allowing employees to work-from-home since the pandemic started, many different types of environmental-related projects are offered and you will not get bored, many opportunities to learn new skills, many opportunities to learn about the industry and meet people in the industry, the new CEO (Tom Reichert) is successfully addressing the concerns employees have had for years and this makes it feel like ERM is moving in a positive direction
Cons
Billability requirements for CL1 and CL2's ranges from 95 to 97% which means that you are paid only 1-4-ish hours a week to network with clients or coworkers and you must secure paid work from clients for the remaining 36-39 hours of the week, if you do not get client work with a long-term project then meeting billability with multiple short-term projects is tricky and time-consuming and you will burn out, the promotion process is obscure and requires approval by higher-ups you do not work with (and even after you consistently meet requirements it may not happen depending on outside factors), high employee turnover, cliquey office atmosphere, some clients may need environmental assessment work which may bring up ethical concerns (you supply the science, the company decides what to do with it) but this is a common concern in environmental consulting not specific to ERM