Pros
In my opinion, Engie walks the talk of sustainability, people-first corporate values, and the effects of climate change. At the beginning of the Covid-19 pandemic, the whole building was transitioned to work-from-home in a matter of 2 days. It was an enormous feat. The success of the effort is in line with the corporate culture of thinking towards the future and being ready for it. I think in any company the experience you have depends largely on your attitude, and whether the attitude of your coworkers and supervisors matches the company values. Overall I think the corporate culture and job framework can foster success in your career, and it is mostly up to you.
Cons
The work can be a bit tedious if you cannot imagine where your work fits into the bigger picture. Sometimes the training is not as robust as it needs to be. They did the right thing when the minimum wage went up in Washington, even though there was some compression. But they were proactive about it and raised everyone 3 months before it happened. There could be more transparency about job ladders and salary ranges. If you need to talk to people all day to be happy, this is not the place for you. Heavy spreadsheet work, and a lot of puzzling out things. Engie has a reputation as a meat grinder in town, but I don't find that to be true.