The Door Behind You

Twenty years ago, I walked into engineering as one of the few women in the room. Last week, I watched an engineer I'd mentored do something I never quite managed at her age: she stood up, disagreed with a room full of senior people, and was right. I have rarely been prouder.

I've been thinking a lot lately about what those twenty years actually taught me. Not the technical things — though there were plenty. The other things. The quieter lessons that don't appear on any competency framework but shape a career just as much.

This is an essay about those. About being a woman in a field that wasn't built with us in mind, about the long climb, and about the one thing I've come to believe matters more than any promotion: the door you hold open behind you.

The room

Let me be honest about the beginning.

When I started, I spent a lot of energy trying not to be noticed as different — and just as much energy being acutely aware that I was. I counted the women in meetings out of habit. Often the number was one. Sometimes it was me.

I don't share that for sympathy. I share it because I know how many women are sitting in that exact seat right now, wondering whether the discomfort they feel is something wrong with them. It isn't. It's the entirely normal experience of being the exception in a place that hasn't yet learned to expect you. The discomfort is information about the room, not about you.

What kept me there wasn't confidence. I want to say that clearly, because "be more confident" is advice we hand young women far too easily, as though confidence were a switch. It isn't. What kept me there was competence — the slow accumulation of being good at the work — and, just as importantly, a few people who took me seriously before I had any right to expect it.

That second part is the whole reason I mentor now.

What competence buys you

Here is something I wish I'd understood at twenty-five: competence doesn't just earn you results. It earns you room to be yourself.

For years I thought the goal was to be so technically excellent that no one could question me. And technical excellence does matter enormously — it's the foundation everything else is built on. But somewhere along the way I realised the point of building that foundation wasn't to armour myself. It was to earn the freedom to bring my whole self to the work: my way of seeing problems, my instinct for the human side of engineering, the perspectives I have precisely because I didn't come up the standard way.

The industry doesn't need women to become carbon copies of the engineers who came before. It needs what we actually bring. A vehicle is designed for everyone who'll drive it — and a team that reflects that range of people will simply build a better one. Difference isn't a diversity checkbox. It's an engineering advantage.

It took me a long time to stop apologising for the things that made me different, and to start treating them as the contribution.

The climb is real — and so is the plateau

I won't pretend the path is purely a matter of mindset. There are structural things — the ones that don't shift because one woman decides to feel more confident.

There's the moment many women hit where the pipeline narrows sharply, often around the same years that life outside work asks the most of us. There's the quiet way ambition in a woman can be read differently than the same ambition in a man. There's the exhausting maths of being "the first" or "the only," where every move feels like it's being made on behalf of an entire category of people.

These are real. Naming them isn't pessimism — it's accuracy. And accuracy matters, because a young engineer who's told the path is frictionless will assume the friction she meets is her own failing. It isn't. Some of it is the system, still catching up.

What I'd tell her is this: you can hold both truths at once. The obstacles are real, and you can still build a career you're proud of. The two don't cancel out. In twenty years I've watched the room change — slowly, unevenly, but unmistakably. There are more of us now. The number in the meeting is rarely one anymore.

The door behind you

Which brings me to the part I actually care about most.

For a long time, I thought success in engineering was a ladder — you climb, you reach, you arrive. I don't think that anymore. I think it's a door. You spend the first half of your career getting through it, and the second half deciding whether to hold it open.

Mentoring, for me, isn't charity and it isn't a side project. It's the most direct way I know to make the industry I love a little more like it should have been all along. Every engineer I help through Chartership, every early-career woman who sends me a nervous message asking whether she's "ready," every mentee who runs further with an idea than I expected — that is the work paying itself forward.

And here's the part nobody tells you: it flows both ways. I set out to mentor thinking I was the one with something to give. I was wrong. The people I've mentored have taught me more about resilience, fresh thinking, and courage than I ever taught them. Watching someone you believed in surpass you isn't a loss. It's the entire point.

The best measure of a career, I've come to think, isn't how high you climbed. It's how many people climbed after you, through the door you refused to let close.

To the woman in the room right now

If you're reading this as the only woman in your team, or one of very few: you belong there. Not once you've proven it. Now.

Build your competence — it's your foundation and your freedom. Find the people who take you seriously, and let them. And the moment you're through that door, however early it feels, turn around and hold it.

Someone held it for me. Twenty years on, it's the best thing I ever did with the privilege of getting through.

Who held the door for you? And who are you holding it for now?