Top 100 Express.js Interview Q&A – Senior (2025)

🎯 Pass your next Express.js developer interview with confidence.

Built from real interview patterns, this pack includes the exact types of questions that senior Express.js candidates face at SaaS platforms, product-led startups, enterprise backend teams, and API-first tech companies in 2025.

📘 Top 100 Express.js Interview Questions & Answers – Senior (2025)

A professional-grade prep tool designed to help you showcase your Express.js expertise, lead with clarity — and land your next high-impact role.

💡 What’s inside:

• 100 advanced interview questions tailored for senior-level Express.js and Node.js backend engineering roles
• Expert-level answers crafted by seasoned Express architects, staff engineers, and backend tech leads
• Covers: scalable API design, layered architecture (Controllers, Services, Repositories), advanced dependency injection, async/await with MongoDB (Mongoose) or SQL (Sequelize), JWT/OAuth2 authentication, caching with Redis, background processing with Bull or Agenda, middleware pipelines, API versioning, rate limiting, Docker & Kubernetes deployments, CI/CD pipelines (GitHub Actions, Jenkins), observability (Winston, Prometheus), OpenAPI/Swagger customization, test automation with Mocha/Chai, and microservice strategies using gRPC or RESTful APIs
• Structured by topic → easy to reference, easy to master
• Printable, mobile-friendly PDF — built for on-the-go prep

🧠 Backed by real hiring experience:

These questions reflect actual senior Express.js interview patterns from 2024–2025 — shaped by hiring manager insights, lead developer feedback, and proven practices from production-grade backend systems.

💼 Perfect for:

• Senior Express.js developers preparing for tech lead, backend architect, or staff engineer roles
• Engineers with 5+ years of experience building robust backend platforms using Express.js and Node.js
• Developers working on microservices, cloud-native backends, distributed systems, or API platforms powered by Express.js

✅ No filler. No outdated tutorials.
Just what you need to practice — and pass.

📥 Download your copy now and prep like a senior.
🎯 Get hired. Faster.