(aka my right hand, my filter, and occasionally my devil’s advocate – I’m Krystian, and yes, this ad is from me directly)
Full-time, on-site – London
£45,000–£55,000 + meaningful equity
Watergate helps buildings detect leaks, cut water waste, and reduce the carbon footprint of every litre, proving the impact with data.
We’re building the missing circuit breaker for water. Every building has fire protection. Every building has security. Almost none have proper water protection, despite leaks causing huge financial and operational damage. We’re here to fix that.
We’re growing fast, I’m at full stretch, and I need someone genuinely formidable to run alongside me.
This is an attitude hire. Skills I can teach, attitude I can’t. That doesn’t mean I’m winging it – it means I’ve learned the hard way that the smartest CV in the room is worth nothing without the temperament to back it up. I’m looking for the person who reads this ad and quietly thinks finally, this is the role I’ve been waiting for. If the attitude is right, the rest follows.
You’ll run my day, protect my time and attention from the noise, and quietly catch the things nobody else has noticed yet. You’ll do the spreadsheet model, the market briefing, the last-minute gift, the meeting notes, the supplier chase, and the awkward email. You’ll sit in on calls and you’ll sometimes pick up coffee. You’ll know what’s going on in the business and who’s about to drop the ball. You’ll learn the company from the inside, faster than anyone else in it.
And – most importantly – you’ll push back when I’m wrong. Calmly, intelligently, with full awareness of context, mood and timing, but without flinching. If we agree on everything, one of us is redundant. The role isn’t to nod and execute. It’s to think, judge, argue when needed, and then execute brilliantly once the call is made.
We’re deliberately lean. That’s not code for chaotic. It means small team, high trust, high ownership and high output.
We use AI tools heavily across the business and you’ll be expected to use them too – drafting, summarising, researching, building briefings, organising information, automating the boring stuff. If you’re not already using tools like Claude or ChatGPT regularly, and getting genuinely excited about new ones, this isn’t the right fit.
This is a place for people who work hard, think clearly and use tools intelligently. Two out of three won’t cut it.
What you’ll do
This role doesn’t have a tidy job description. The honest answer is: whatever needs doing, that day, to make me and the company move faster. Some of what you’ll do most weeks:
What I’m looking for
Attitude first. Skills second. I mean it.
The attitude (non-negotiable):
The skills (I expect these from day one):
The practicalities:
This probably isn’t for you if you want a tightly defined support role, predictable hours, clear edges around the work, or a job that fits neatly inside one box.
You’ll probably do well here if you…
What’s possible here
I’ve hired this kind of role before. The last person who held something like it joined as an EA and left as COO – earning every step through grit, judgement and impact. I’m not promising titles or timelines. I’m telling you what the ceiling looks like for the right person, on the right trajectory, doing the right work. If that’s the shape of opportunity you’re looking for, this is the role.
What you’ll get
Location
Full-time and based in our London office. We’re currently in NW2 and moving to Waterloo in summer 2026. This role can’t be done remotely – proximity is part of the value.
Hiring process
I move fast and I won’t waste your time.
Apply
If you read this ad and quietly thought “finally, this is what I’ve been waiting for” – I want to hear from you. Send your CV to careers@watergate.ai and tell us why you fit.
Tell me why this role fits you, and why you fit it.
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