Many candidates claim full stack proficiency but are actually frontend devs who know a little Mongo, or backend devs who struggle with CSS. To hire a genuine full stack expert, you need to test their depth across all three layers: Architecture, Performance, and DevOps.
1. Architecture & Design
These questions verify if they can build a system that scales, not just one that works.
1. RESTful Design
"How do you design a robust REST API?"
Look for: HTTP verbs (GET vs POST), status codes, and statelessness.
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<h3 class="font-bold text-gray-900 mb-2">2. React State</h3>
<p class="text-sm font-medium text-slate-800 italic mb-4">"How do you manage complex state?"</p>
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<strong>Look for:</strong> Context/Redux vs. local state. Avoiding prop drilling.
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<h3 class="font-bold text-gray-900 mb-2">3. MVC Structure</h3>
<p class="text-sm font-medium text-slate-800 italic mb-4">"Explain Frontend vs. Backend logic."</p>
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<strong>Look for:</strong> Separation of concerns. No business logic in UI.
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4. SQL vs. NoSQL
"When would you choose SQL over NoSQL?" Check their depth on data modeling.
| Feature | SQL (Relational) | NoSQL (Non-Relational) |
|---|---|---|
| Structure | Structured, strict schema (Tables) | Flexible schema (Documents/Key-Value) |
| Best For | Complex queries, financial transactions | Rapid prototyping, massive unstructured data |
| Scaling | Vertical (bigger servers) | Horizontal (more servers) |
2. Performance & Security
5. Optimization
"How do you speed up a slow site?"
Look for: CDN usage, image compression, database indexing, lazy loading.
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<h3 class="font-bold text-gray-900 mb-2">6. Auth vs. Authz</h3>
<p class="text-sm font-medium text-indigo-900 italic mb-4">"Explain Authentication vs Authorization."</p>
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<strong>Look for:</strong> Auth = "Who are you?" (Login). Authz = "What can you do?" (Permissions).
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<h3 class="font-bold text-gray-900 mb-2">7. Handling Errors</h3>
<p class="text-sm font-medium text-indigo-900 italic mb-4">"How do you handle production exceptions?"</p>
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<strong>Look for:</strong> Graceful degradation, logging (Sentry), no stack traces for users.
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3. DevOps & Craftsmanship
8. Version Control
"How do you use Git in a team?"
Key: Branching strategies (GitFlow/Trunk-Based).
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<h3 class="font-bold text-gray-900 mb-2">9. Deployment</h3>
<p class="text-sm font-medium text-purple-900 italic mb-4">"Walk me through a production deployment."</p>
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<strong>Key:</strong> CI/CD Pipelines, Blue-Green deployments.
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<h3 class="font-bold text-gray-900 mb-2">10. Responsiveness</h3>
<p class="text-sm font-medium text-purple-900 italic mb-4">"How do you implement Responsive Design?"</p>
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<strong>Key:</strong> Mobile-first approach, Flexbox/Grid.
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<h3 class="text-3xl font-extrabold mb-4 tracking-tight" style="color: white;">Stop Searching, Start Building</h3>
<p class="text-violet-100 text-lg leading-relaxed mb-0">Don't waste months filtering through "bootcamp graduates." Access Boundev's elite network of Senior Full Stack Engineers today.</p>
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Find Talent
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Frequently Asked Questions
What is the most important soft skill for a Full Stack Dev?
**Communication.** Because they bridge the gap between design and database, they must be able to translate requirements into technical reality for both frontend and backend teams.
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<h4 class="font-bold text-gray-900">Are Full Stack Developers generalists or specialists?</h4>
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<p itemprop="text">They are typically "T-shaped." They have a broad understand of the entire stack (the horizontal bar) but deep specializtion in one area (the vertical bar), such as React or API design.</p>
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