Haya
Consultant · relationships
Owns every relationship: qualification, briefs, candidate care and the honest phone call. If you talk to Merit, you talk to Haya.
LinkedIn ↗Merit by Design is a two-person recruitment agency for permanent technology hires in the UK.
The method
“Led the migration of our payments platform to event sourcing.”
Which failure made you regret the design, and what did you change?
Named the outage, the idempotency bug and the replay fix. First-hand, specific, consistent under probing.
Technical depth 4/5. Production evidence, honest about the trade-offs.
Kubernetes internals: not tested. Marked, not assumed.
What you receive
Every shortlisted candidate arrives with a two-page brief like this one. The candidate here is a composite; the format is exactly what you would receive.
Our view for this role
Senior Backend Engineer at a Series B payments company
The short answer
Worth a serious conversation
Strong distributed-systems evidence, first-hand and consistent under probing. Kubernetes internals went untested; the role runs on managed EKS, so we would weight that lightly. Leadership evidence is thinner than the CV suggests.
Merit’s judgement
What we came away thinking
An engineer who has carried a payments ledger through a real outage and can say what they would do differently now. Quietly spoken, so give the interview room for that. Notice period is the practical constraint.
The role, tested
What the conversation actually established
Event-sourced systems in production
Led the migration of a payments ledger to event sourcing. Named the replay outage, the idempotency bug and the fix. First-hand and specific.
Postgres at scale
Partitioning and vacuum tuning on a multi-terabyte ledger, with numbers. Clear about the limits of what had been tried.
Leading a team of five
Has led two engineers through a delivery. Has not run hiring or performance conversations. Would need support here.
Kubernetes internals
Not covered in 45 minutes. Marked, not assumed.
Page two carries direct quotations from the conversation, Adam’s scores across five competencies, what would change the decision, and the practical details: notice, location, pay position.
Assessments expire after six months. Stale evidence is redone before anyone is put forward.
The terms, up front
Contingency. If we do not place, you do not pay. The percentage and payment terms are agreed in writing before we start, and you will hear the number on the first call.
Replacement first. If an early hire fails, our default is to run the search again. The window and remedy are set out in the Terms of Business you will have before anything starts.
Not required. We work contingency by default; retained or exclusive is available if you would prefer it.
A short list of assessed candidates. Each comes with the two-page brief above, the CV, and confirmation that the candidate has agreed to this specific introduction.
UK GDPR throughout. CVs stored with EU data residency, consent recorded per introduction, retention reviewed on a schedule. No decision that significantly affects a person is made by software alone.
As a drafting tool. Software may organise the first draft of a report; a named human checks every quotation against the source and owns the judgement. No candidate is rejected, submitted or ranked by a machine.
The founders
The person who takes your brief is the person who works it.
Consultant · relationships
Owns every relationship: qualification, briefs, candidate care and the honest phone call. If you talk to Merit, you talk to Haya.
LinkedIn ↗Technical assessor · engineering
Principal engineer with twelve years in regulated payments. Ran engineering at Orbital, growing the team from four to twenty-five, and most recently built a GBP-stablecoin platform inside the FCA’s regulatory sandbox. Rust, Python, TypeScript; ledgers and distributed systems.
Runs every technical assessment personally, one conversation at a time.
LinkedIn ↗A note from Adam
I have built and run engineering teams, and hired for them: at Orbital I grew the team from four to twenty-five. I know how little a CV tells you, and how much a 45-minute conversation about real work does. So I have that conversation with every candidate myself. It does not scale, and that is rather the point: it is the one part of recruitment I would trust if I were the one hiring. If we put someone in front of you, I have talked to them, and I will tell you what I could not test.
Adam
For candidates
Free to you, always; the hiring company pays. Nothing leaves us without your yes, and we name the company and the role before we ask. What we did not test is marked unknown, never scored against you.
Open searches are posted on LinkedIn, where they stay current.
Twenty minutes is enough to tell whether we can help. If we can’t, we’ll say so.
haya@meritbydesign.com