Top 100 Phoenix Interview Q&A – Senior (2025)

🎯 Pass your next Phoenix developer interview with confidence.

Built from real interview patterns, this pack includes the exact types of questions that senior Phoenix candidates face at product companies, SaaS platforms, and Elixir-based engineering orgs in 2025.

📘 Top 100 Phoenix Interview Questions & Answers – Senior (2025)

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

💡 What’s inside:

• 100 advanced interview questions tailored for senior-level Phoenix and Elixir engineering roles
• Expert-level answers crafted by Phoenix core contributors, LiveView experts, and Elixir platform architects
• Covers: scalable context and umbrella architectures, Ecto performance patterns, custom Plug pipelines, advanced PubSub and distributed messaging, LiveView interactivity at scale, auth systems (OAuth, token/session hybrid), background processing (Oban), telemetry & observability, error reporting, caching & rate limiting, boundary-driven design, multi-tenant systems, database tuning, real-time collaboration workflows, test strategies (mocks, data factories, integration), CI/CD with releases, and high-availability deployment (Fly.io, Kubernetes, Gigalixir)
• Structured by topic → easy to reference, easy to master
• Printable, mobile-optimized PDF — built for on-the-go prep

🧠 Backed by real hiring experience:

These questions reflect actual senior Phoenix interview patterns from 2024–2025 — shaped by tech lead feedback, recruiter insights, and production experience in Elixir teams.

💼 Perfect for:

• Senior Phoenix developers preparing for staff engineer, architect, or tech lead roles
• Engineers with 5+ years of experience in backend, Elixir, functional programming, or distributed systems
• Developers scaling real-time, fault-tolerant, and maintainable Phoenix/LiveView platforms

✅ 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 No outdated tutorials.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.