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Building a skill-assessment engine for hiring: timed tests, anti-cheat, and category-based matching

Building a skill-assessment engine for hiring: timed tests, anti-cheat, and category-based matching

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1 min read
Your Tests Pass. That Proves Nothing.

Your Tests Pass. That Proves Nothing.

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12 min read
Cut Over the Model Path or Don't Ship: A Fail-Closed Inference Checklist

Cut Over the Model Path or Don't Ship: A Fail-Closed Inference Checklist

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8 min read
Driving a real shell from Python: a sentinel and a thread beat the select/readline race

Driving a real shell from Python: a sentinel and a thread beat the select/readline race

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3 min read
Leave a Replay Script, Not a Transcript

Leave a Replay Script, Not a Transcript

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7 min read
The test was green. The code had never worked.

The test was green. The code had never worked.

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4 min read
Workers Should Not Inherit Your Logging Handlers

Workers Should Not Inherit Your Logging Handlers

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7 min read
After 10 years working with Kafka, I built the data tool I wanted

After 10 years working with Kafka, I built the data tool I wanted

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4 min read
The Weighbridge Workshop

The Weighbridge Workshop

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8 min read
Calibrate the Judge Before the Agent Score

Calibrate the Judge Before the Agent Score

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7 min read
How Many Testers Should You Really Recruit Above the Minimum 12?

How Many Testers Should You Really Recruit Above the Minimum 12?

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4 min read
Don't Average Pass Rates Across Unequal Token Budgets

Don't Average Pass Rates Across Unequal Token Budgets

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7 min read
Case Study: A Daily Digest Job That Refuses Implicit Timezones

Case Study: A Daily Digest Job That Refuses Implicit Timezones

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8 min read
Expose Crypto KAT Runners as MCP Tools Instead of Pasting Hex

Expose Crypto KAT Runners as MCP Tools Instead of Pasting Hex

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1 min read
A test that has never failed is a claim, not evidence

A test that has never failed is a claim, not evidence

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5 min read
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