Open-Source Interview Platform
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Hey! I have been building CoderScreen, an alternative to coding interview platforms. I thought it was an interesting product to build with the evolution with all the sandbox products coming our for code execution, as well as me never being satisfied with existing platforms.The current features are: - Live interviews for pair programming exercises - Assessments for async technical screeningIt is built on Cloudflare primitives such as Workers, Durable Objects for the multiplayer experience, Sandbox for the code execution.Would love to get feedback on the current product, as well as hear your thoughts on the future of hiring in this AI era. Would you want to see an interview based on how candidates use coding agents? Would you like to see more take-home based projects instead of simpler async coding challenges?
HN · launched Jul 1, 2026 · 6 upvotes (top 71%) · 2 views
Niche: technical interview prep platforms · 94 launches, 5 in the last 7 days ▼ -50% · Explore this niche →
Category and tags
- HR & recruiting
- Workflow automation
- B2B
- Not AI
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 94 launches in technical interview prep platforms →
Could you build this?
Partial The frontend collaborative interview room with video/audio and shared code editing is straightforward, but building secure, low-latency, multi-language remote code execution sandboxes is difficult.
What it would actually take: The frontend needs WebRTC, operational transformation or CRDTs (like Yjs) for Monaco code editing, and WebSockets. The backend requires a scalable, secure code evaluation daemon using isolated microVMs or hardened containers (Firecracker, gVisor, or isolate) with strict timeouts, CPU/memory quotas, and network kill switches to prevent resource abuse.
Discussion
No comments on this launch.
Competitors
Other products that read as similar to this one : 265 launches clear the similarity bar, closest 8 shown.
Attention rank: #225 of 266 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 241 days after the earliest competitor.
- codeProctor · ph · 2026-10-06 · 1 upvotes · similarity 0.49
- Open-source sandbox for your product team · hn · 2026-07-01 · 17 upvotes · similarity 0.47
- InterviewLint · ph · 2026-11-01 · 1 upvotes · similarity 0.47
- ai-coding-interview-practice · github · 2026-09-15 · 22 upvotes · similarity 0.47
- Kendor · ph · 2026-11-10 · 1 upvotes · similarity 0.46
- Interview Copilot · ph · 2026-11-13 · 2 upvotes · similarity 0.46
- Litmus - The industry's most accurate engineering interview · yc · 2026-07-09 · 5 upvotes · similarity 0.45
- techinterview.live · ph · 2026-10-01 · 3 upvotes · similarity 0.44
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