Collab.Code Blog

Engineering, interviews, and the future of collaborative coding

Deep technical writing from the team building Collab.Code. No fluff — only posts we'd want to read ourselves.

Featured

How Y.js CRDTs power conflict-free real-time collaboration

A deep dive into conflict-free replicated data types: why vector clocks beat operational transforms, how Y.js implements them, and what it means for your editor.

Arhama F. · May 12, 2026

Interview Prep 11 min read

The anatomy of a technical interview: what top companies actually evaluate

After analysing 500+ interview sessions, here's what Staff Engineers at Stripe, Vercel, and Linear actually care about — and what most candidates get wrong.

Sarah C. · May 8, 2026

All posts

Engineering

Building a sandboxed code execution engine for 8 languages

How we run untrusted user code safely using child_process, SIGKILL timeouts, cgroups, and output caps — without Docker overhead on every request.

Apr 29, 2026

14 min read

AI & Product

AI code review vs human review: a practical comparison after 50,000 sessions

We analysed what Claude catches that humans miss (and vice versa), the right way to prompt for review, and how to integrate AI without killing your engineering culture.

Apr 21, 2026

9 min read

Best Practices

10 pair programming patterns that will change how your team ships

Ping-pong TDD, strong-style pairing, backseat driver mode — a practical guide to collaboration patterns that the best engineering teams actually use.

Apr 14, 2026

6 min read

Engineering

Scaling WebSocket rooms with Redis Pub/Sub: lessons learned

What happens when Socket.IO is no longer enough? We walk through our architecture migration from a single Node process to a Redis-backed multi-node cluster.

Apr 7, 2026

12 min read

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