Pros
Pretty nice colleagues, high amount of annual leave, usual medical benefits (insurance, outpatient, etc..), phone discount voucher, staff line, many other benefits especially for those with family etc. 1.5 years ago they started to 'modernise' so no need to wear formal anymore (just smart casual) and can take a few days of MC (MC not required) off which is good and flexible. AWS is most likely guaranteed. You can work here your whole life and not get into any issues if you show up to work on time just do your job. Good if you like corporate environment and your boss takes a liking to your work I guess. But then again it's the same everywhere we go (except tech companies). Work is sometimes challenging and fast moving, which could be a pro or con depending on your style (and the 'challenges' presented). Career opportunities is definitely there if you are a good performer and be someone loud/visible (again this depends on your bosses).
Cons
There is really too much to list from my perspective, I don't know where to even start. I will update this if/when I can with my grandfather/grandmother stories. But for now, those in IT related fields thinking of coming over, I would suggest to stay away if you can as there are a lot of red flags (and I personally came across a few already). Don't waste your time here, unless you really need the job or want to experience M1 or put M1 on your resume. Be prepared for OT especially if you want your bonuses (yes, a lot of us do OT). If you want to change management way of doing things, be prepared for frustration as things move glacier slow here, unless you are THE management then more power to you. I even wouldn't want my worst enemy to join M1. It is really bad right now (at least from my point of view), please find other better (at least for devs) jobs. Now thinking back, I don't have a single thing good that happened in the past year to talk about, except WFH which is more flexible, and M1 is practicing this as per govt guidelines which is great! But I think deep down all of us know it's because one has no more excuse to leave work on time to take the shuttle bus home :D It's a win-win situation as employees get to stay home and M1 get to save money on maintenance and transport claims and get greatly increased productivity from their employees. People looking for yearly pay raise need no apply, it's not guaranteed, and this year it's due to COVID and the bad landscape (p.s. some people still have pay raises, just that keeping it on the DL so not all go and ask for pay raise) I still have a lot more to say, stay tuned for more!