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CodeSignal Updates
How San José State climbed to #2, and why their deans saw it coming
When you rank universities by what graduates can actually do rather than by institutional prestige, the results look different. That's been true every year since CodeSignal started publishing its University Ranking Report.…
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Tech Recruiting
Pre-employment testing platforms: A practical guide for global hiring 
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AI Interviewer
AI interviewer video technology: How the hiring process is changing for the better

Interview prep

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Interview Prep
Advice from CodeSignal CEO, Tigran Sloyan, on prepping for tech interviews & assessments
28 SQL interview questions and answers
Interview Prep
28 SQL interview questions and answers from beginner to senior level
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Interview Prep
22 senior software engineer interview questions (and answers)

Tech recruiting

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Tech Recruiting
Pre-employment testing platforms: A practical guide for global hiring 
Tech Recruiting
Best hiring platforms 2026: Tools that actually predict job performance
Tech Recruiting
CoderPad Alternatives: Smarter options for technical interviews

Engineering

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Engineering
A beginner’s guide to mastering data visualization with Matplotlib
Engineering
How to analyze large datasets with Python: Key principles & tips
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Engineering
How to learn C++: An upskilling guide for beginners

CodeSignal updates

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CodeSignal Updates
How San José State climbed to #2, and why their deans saw it coming
CodeSignal Updates
Highlights from Beyond 2025: Building the super skills of the AI era
CodeSignal Updates
A Conversation with Dr. Mary Papazian on the Future of Education

All posts

How we support mobile developer interviews in our back-end and IDE

To reduce bias in assessment, use job-relevant examples in your coding tasks

Creating SQL questions in CodeSignal

Why your hiring processes need to consider candidates’ potential and purpose

How to use source maps for essential debugging

Creating filesystem questions in CodeSignal

Why we moved from MongoDB & Meteor observers to Redis

How Wayfair uses data to optimize its recruiting process and performance

6 tips for evaluating skills with CodeSignal’s custom questions

How to create questions in CodeSignal – Part 2

How to create tasks in CodeSignal – Part 1

How we support autocompletion for 25+ languages in CodeSignal’s IDE