Your First 90 Days
in a Corporate Role
What to do in the first three months of your first real job. How to earn trust fast, avoid the mistakes that actually cost people, and position yourself for what is next before most people have even settled in.
Day one is not about performing. It is about paying attention.
Nobody expects you to know everything. What they do expect is that you show up on time, introduce yourself without being awkward about it, and listen more than you speak. Sounds simple. Most people get it wrong because they are too busy trying to seem impressive.
Understanding what this role actually is
Most internships are three months. This is not a trial run. It is the run. Companies use this period to decide if they want to offer you a graduate or return role. The people who get return offers are not necessarily the smartest in the room. They are the ones who showed up every day like it mattered. Treat every day of those three months as an audition for the role you actually want.
What to actually do on day one
What to avoid
- Telling people how your last internship or uni did things differently
- Over-explaining yourself or your background unprompted
- Staying completely silent all day (this reads as disinterest, not humility)
Know who is who before you speak to them
On one of your first days, ask someone, your manager, a buddy, or HR, if there is an updated team directory or photo board. Something that shows everyone's name, face and title in your team or service line. Many firms have these on their intranet. This is not about being nosy. It is about knowing who is who before you accidentally introduce yourself to the Managing Director like he is a graduate analyst.
Your first impression is set by the end of week one, not day one. How you handle the small moments across the first five days matters more than any single grand gesture.
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