In the first 90 days of a new job, you’re going to have a solid feel for the construction of your team. Who is who. Who does what. What they know. Who the freak is. Who the free electron is. In a start-up when there are only 12 of you, you’re done. You know the initial people landscape because, from where you sit, you can see them all and you interact with all of them regularly. In a larger company, however, 90 days is only going to give you a brief glimpse of what you need to know about your coworkers, the company, and its culture.

Fortunately, in a large company, tools and documents have been created to help you traverse the culture and process and figure out where people fit. For example, what do you do when you get a random urgent mail from a coworker stranger? Even if the stranger takes the time to explain who they are and what they do, you still fire up the corporate directory with the simple question: “Who does this bozo work for?”

The corporate directory is the digital representation of a formerly very important document: the organization chart.

A quick glance at the org chart answers a lot of ego-based questions like:

As sources of information go, the org chart is essential, but it is an incomplete picture of your company, which brings us back to bridge at Netscape.

If you looked up the four core bridge players on the org chart, you’d learn a bit. One engineering manager, another guy from some oddly named platform team, another guy who had a manager title but no direct reports, and the last guy who looked like a program manager.

My org chart assessment: Meh.

What I learned months later was that the folks sitting at that regular bridge game not only defined much of what became the Netscape browser, they also continued to define the engineering culture, or what I think of as a culture chart.

Unlike the org chart, you’re not going to find the culture chart written down anywhere. It doesn’t exist. The culture chart is an unwritten representation of the culture of your company, and understanding it answers big questions that you must know:

This is fuzzy philosophical mumbo jumbo, so let’s bring it home. In your current job, right now, tell me what it’s going take to get you a promotion.

“I need to work really hard.”

OK, so you knew you need to work hard to get a promotion before you set foot in your current gig. My question is, what specific thing do you need to do in order to be promoted? I’d argue that for any engineer who is actively managing his career, it’s essential to figure out the answer to this question as quickly as possible, and to do so you need to understand the culture.

If you are going to be promoted, you are going to succeed when you provide a certain group of people with things it thinks it needs. Now, your gut instinct is that this group of people is the management team, and that’s a good org-chart-centric answer. The guy who signs the checks might be the guy who instigates promotions. The problem is it’s your job to stay ahead of your manager. You’re not going to get promoted by giving your manager what he wants; a promotion comes when you give him what he wants as well as what he does not expect but desperately needs.

It’s unfair. This guy is tasked with your career development, and I am saying it’s your job to tell him what he wants. You don’t have to do this; you can take the reactive cues from your boss, but I derive intense professional satisfaction when I deliver the unexpectedly needed, and I discover the unexpected by first finding the culture.

To deduce the culture of a company, all you have to do is listen. Culture is an undercurrent of ideas that ties a group of people together. In order for it to exist, it must move from one individual to the next. This is done via the retelling of stories.

“Max was this nobody performance nerd, and three weeks before we were supposed to ship, he walked into the CEO’s office with a single piece of paper with a single graph. He dropped the graph on the table, sat down, and said, ‘No way we ship in three weeks. Six months. Maybe.’ The CEO ignored the paper and told him, ‘We lose three million dollars if we don’t.’ Max stood up, pointed at the chart, and said, ‘We lose 10 if we do. We must not ship crap.’”

Whether this story is true or not is irrelevant. The story about how Max saved the company 10 million dollars by telling the CEO “no” is retold daily. In hallways. At the bar over beers. The story continually reinforces an important part of this company’s culture.

We must not ship crap.

There isn’t a corporate values statement on the planet that so brutally and beautifully defines the culture of a company.

There are other stories that you’re going to hear over and over again, and inside each of these stories are the real corporate values. Each one, while designed to be entertaining, teaches a lesson about what this particular company values, and learning how to deliver that value is how you’re going to get promoted.

There’s a chance you’re not going to find these stories. My hope is that you’re in a company where engineering is valued and, as such, has an influence on the culture of your company. If it’s been six months, you’ve been actively looking, and no one has told you a great story about how engineering shaped the fortunes of your company, there’s a chance that engineering doesn’t have a seat at the culture table in your company. My question is then, “How are you going to succeed, how are you going to be promoted, where engineering isn’t an influential part of the culture?”

After you have a healthy collection of stories, you’re going to have a good idea about some of the culture, but you’re still missing essential data for your culture chart. See, the folks who tell the stories about culture usually aren’t the folks who created them.

Stories are told, but first they are born.

The people who are responsible for defining the culture are not deliberately doing so. They do not wake up in the morning and decide, “Today is the day I will steer the culture of the company to value quality design.”

They just do it. The individuals who have the biggest impact on the culture and company aren’t doing it for any other reason than they believe it is the right thing to do, and if you want to grow in this particular company it’s a good idea to at least know who they are and where they sit. You need to pay attention to this core group of engineers because as they do, so will the company.

Your company is networked in more ways than you can possibly imagine. Just because you’ve reverse engineered the development culture in your organization doesn’t mean you’ve got a complete map of the overall culture. There are endless connections tugging any decent-sized group of people in multiple directions at once. There’s the been-here-forever network, the I-survived-the-layoff people, and the untouchable did-something-great-once crew.

Culture assessment is an information game, and it’s never over. Your career depends on your ability to continually situate yourself in such as a way that, as quickly as possible, you can assess subtle changes in the culture of your company.

I wasn’t concerned when Netscape started losing market share to Microsoft. I didn’t sweat it when the stock price stalled. The reason I started thinking about my next gig was, months before either of these two events occurred, one of the lunchtime bridge team left.

The game stopped. The small group of four no longer spent a long lunch quietly, unknowingly defining the culture of the company, and everyone who was watching noticed.

They noticed when one of those who had humbly done the work that defined the company no longer believed enough to stay.