Why do you want to work here, and why are you leaving your current role?

Two questions, one answer

These are asked as separate questions and graded as a single one. The interviewer is building a model of your motivation with a push and a pull in it: something you are moving away from, and something here you are moving towards. When the two halves match — you have stopped learning on a maintenance product, and this role is greenfield work in a domain you want — the answer is credible without needing to be impressive. When they do not match, nothing else saves it. A candidate who is leaving because of the commute and then talks for two minutes about the company's engineering culture has told the interviewer that at least one of those statements is decoration.

Underneath, the concern is retention. Filling this seat costs real money and several weeks of a manager's attention, and the manager will lose it again if you leave in a year. So the question behind the question is: is the thing that is wrong where you are now something that could equally go wrong here? That framing is more useful than any script, because it tells you which reasons are safe. "I want to work on systems at higher scale" is safe if the scale here is genuinely higher. "I want more autonomy" is dangerous if you say it without evidence, because the interviewer cannot tell whether you were denied autonomy or could not be given it.

What a good answer contains

Three things, in about forty seconds each. First, the reason you are moving, stated once and without elaboration. Second, what you tried first — this is the part almost everyone omits, and it is the difference between a considered decision and a reaction. "I asked to move to the platform team, and there was no headcount for it this year" transforms the same reason into evidence that you address problems before escaping them. Third, one specific fact about this company or role that connects to the first part. Specific means something you could not say about three other employers: the product's actual problem, the technology choice, the fact that the team owns its own deployment, the market the company sells into.

That third part is where preparation shows, and it does not require flattery. Reading the engineering blog is fine, but the strongest version is usually the plainest: this is a domain you find interesting, this is a technical problem you want to be near, this is a stage of company you have decided you work better in.

Why the honest bad reason beats the script

Most people's real reason for leaving is unglamorous. Money. A manager they cannot work with. A product being wound down. Two hours a day in traffic. A reorganisation that put them under someone junior. Candidates assume these reasons are disqualifying and substitute something noble, which is where the trouble starts, because the substitution collapses under a single follow-up while the honest version does not.

Take money. "I am underpaid relative to the market and my current employer has told me their band does not move" is a complete, adult reason that every interviewer has heard and most have lived. It invites one obvious follow-up — would you stay if they matched it — which you can answer. Now take the script it usually gets replaced with: "I am looking for a bigger challenge." The interviewer asks what you have found insufficiently challenging, and you have to invent a second thing, then a third when they ask what you did about it. The lie is not the problem; the absence of anything behind it is.

The same holds for a difficult manager, which is the reason candidates fear most. It is sayable, as long as it is said as a description rather than a complaint and stops before the second sentence.

Real reason	Fails as	Works as
Underpaid	"Looking for a new challenge"	"The band where I am does not move, and I have asked"
Bad manager	"The culture was not a fit"	"My manager and I worked very differently, and after a year we had not resolved it"
Made redundant	Vagueness about dates	"The team was cut in March; here is what I have done since"
Bored	"I want to grow"	"The system has been stable for two years, and I want to build something again"
Commute or location	Silence about it	"I am moving to a hybrid arrangement I can sustain, which this role allows"

Note the shape of the middle column: every failing version is a phrase that could be said by anyone about anywhere. That is the actual signal an interviewer is picking up. Not dishonesty — genericness. A generic answer is scored as no information, and no information late in a process reads as evasion.

Complaining is the line, not honesty

The distinction candidates get wrong is between an honest reason and an aired grievance, and it is not a distinction of content but of duration and tone. You can name a bad situation. What you cannot do is take the interviewer through it, assign fault, or invite them to agree with you. The reason is not squeamishness about negativity: a candidate who describes a past employer as unreasonable has demonstrated that they will describe this employer that way, and the interviewer is imagining themselves in that sentence.

The practical rule is two sentences and a forward turn. Here is roughly the sound of it:

"My manager and I never really worked well together — different views on how much process the team needed. I stayed a year and tried to make it work, then decided it was easier to move than to keep negotiating it. What I want next is a team that has already settled how it makes decisions, which is partly why this role interested me."

That is honest, unflattering to nobody in particular, thirty seconds long, and it ends pointing at the job. Contrast the same content stretched to two minutes with three examples of the manager's behaviour: identical facts, completely different rating.

Where the answer usually goes wrong

The commonest failure is not dishonesty and not negativity. It is that the answer never mentions this company at all. Ask a hundred candidates why they want to work here and most describe what they want in a job — growth, scale, good engineers, interesting problems — which answers a different question and leaves the interviewer with nothing to write down. The correction is mechanical: your answer must contain at least one noun that only applies to this employer. If it does not, you have answered "why do you want a new job", and the fact that you did not notice the difference is itself the finding.

The second failure is asymmetry between the two calls. The recruiter and the hiring manager compare notes, and a reason for leaving that grows a new motive between Tuesday and Thursday is the kind of inconsistency that gets raised in a debrief. Decide the true version once, and give the same one to everybody.