This video discusses the importance of onboarding and how it can significantly impact your reputation and career growth.
If you imagine a "Trust Meter" where 0 means you have no trust and 100 means absolute trust, your default score as the new engineer will be around 50. Existing employees will think you are smart and have good intentions, but you need to work hard to increase the score and unlock larger-scoped projects. This hard work begins in onboarding.
The other reason the initial months in the company are important is because the tech industry is changing increasingly rapidly. When the average tenure at a company is < 2 years, you need to figure out how to fully ramp up in a fraction of that time. Even within the same company, you will likely switch teams multiple times. Re-orgs are so common!
By approaching onboarding with a proactive plan and a sense of urgency, you can set yourself up for success and build strong relationships quickly.