How to Vet a Senior Software Engineer

The interview process that separates real seniors from practiced interviewees.

Technical interviews are gameable. LeetCode preparation has produced a generation of engineers who can reverse a binary tree in 20 minutes but can't design a database schema for a real feature. This guide covers the interview structure that actually reveals seniority.

No fluff. No guesswork. Just what actually works.

What Seniority Actually Means (It's Not Years of Experience)

Seniority is about the decisions an engineer makes without being told. A senior engineer pushes back on scope when it will create technical debt. They ask about requirements before writing code. They document their decisions. They think about what happens when the feature grows to 10x the current load. The seniority signals in an interview: do they ask clarifying questions before answering? Do they mention trade-offs? Do they talk about what could go wrong?

At Valletta Software, we focus on:

System design: give a real problem from your domain — not a generic 'design Twitter'

Code review: show them a PR with real issues — ask what they would comment

Past decisions: 'tell me about a technical decision you made that you would change now'

Estimation: 'how would you estimate this feature?' — do they ask for requirements first?

Debugging: give a real production bug from your history — how do they approach it?

Culture signals: how do they talk about past teammates and managers?

References: always call — ask specifically about how they handled disagreement with a tech lead

The Screening Process That Saves Months of Wasted Interviews

Structure your process and you stop interviewing the wrong candidates.

We give you more than just people. We give you top performers who drive results.

Stage 1: async technical screen (30 min) — architecture question, no coding puzzles

Stage 2: portfolio/code review call (45 min) — their real code, their real decisions

Stage 3: system design interview (60 min) — domain-relevant, not whiteboard algorithms

Stage 4: reference call — structured questions, not 'would you work with them again'

Optional: paid trial task (8–16h) — real ticket from your backlog, evaluated like a PR

You stay in control. We handle hiring, contracts, and HR. You direct the work.

EU-incorporated in Malta — NDA on day one, full GDPR compliance. Trusted by startups and enterprise teams across 12+ industries.

Skip the Vetting — Use Ours

Vetted senior engineers, pre-screened for your stack

Ready to start this week — no 3-month search

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Replacement guarantee — no disruption if issues arise

How to Vet a Senior Software Engineer — or Let Us Do It For You

Our engineers are pre-vetted. Portfolio reviewed. References checked. Ready this week.

Our engineers are trained in today's most powerful tools — Copilot, Claude, Cursor, and AI-assisted testing — and use them daily to move faster without cutting corners.

We vet every engineer before they reach you: technical screen, portfolio review, reference check. You interview once and decide. NDA on day one.

Let's keep it simple.

Browse pre-vetted engineers: /ai-empowered-team-on-demand

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