Expertise / 04

Engineering

Backend, platform, cloud, SRE and security — where correctness has consequences.

Correctness under failure

Idempotency
Ordering
Retries
Replay
Audit trail
Recovery

We interview against these instead of running an algorithm loop.

Financial systems punish the failure modes most product engineering tolerates. Eventual consistency is a design choice in a social feed and a reconciliation incident in a ledger.

What we understand

Idempotency & exactly-once
Event-driven architecture
Ledger & audit trail design
High availability & RTO/RPO
Data residency constraints
Key management & HSMs
PCI scope reduction
On-call & delivery health

What we screen for

Correctness under failure, not algorithm trivia

We probe how a candidate handles duplicate messages, partial failures and replay. It predicts performance in financial systems far better than a whiteboard exercise.

Evidence of operational ownership

We look for engineers who have carried a pager for a system that moves money, and can describe an incident they caused as clearly as one they fixed.

Leadership scope versus title

VP Engineering means very different things at 25 and 250 people. We calibrate on team size, hiring history, budget and what they built versus inherited.

Where these hires go wrong

Running a FAANG-style loop for a role whose real risk is...

Running a FAANG-style loop for a role whose real risk is transactional correctness.

Hiring a first engineering leader for architecture when the need...

Hiring a first engineering leader for architecture when the need is hiring and process.

Over-indexing on language. Strong systems engineers cross...

Over-indexing on language. Strong systems engineers cross languages; few cross domains.

FAQ

Frequently asked

Do engineers need prior fintech experience?

Not always. Strong distributed-systems and operational experience transfers well, and insisting on prior fintech unnecessarily shrinks the pool. We advise where domain experience is genuinely required — payments, ledgers, controlled functions — and where it is not.

Contract as well as permanent?

Yes, and we will say when contract is the better route rather than defaulting to whichever model pays us more.

The question

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