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⚡ AI Lessons

Dev.to · DataDriven
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
48% of Data Engineering Job Postings Are Ghost Jobs
Nearly half of DE job postings may never be filled. Candidates spend 20 hours on take-homes for roles that aren't real. Here is what is actually happening.

Dev.to · DataDriven
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Entry-Level Data Engineering Is Gone. Here's the Proof.
Junior DE postings collapsed 67%. Only 3% of jobs are entry-level. Hiring is up , but every gain went to senior roles. The on-ramp closed.

Dev.to · DataDriven
🔧 Backend Engineering
⚡ AI Lesson
1mo ago
DSA Is Dead. What Replaced It Is Somehow Worse.
Companies finally dropped algorithm rounds. What came next: no rubrics, AI bans, 15-hour take-homes, and zero data modeling. Meet the new broken.

Dev.to · DataDriven
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
They Gave Me a 20-Hour Take-Home. I Did It. I Got Ghosted.
The take-home assignment replaced the whiteboard and somehow made data engineering interviews worse. Here's what's actually happening.

Dev.to · DataDriven
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Data Engineer Salary 2026: Every Survey Is Lying to You
Career pages show a $185K median. Salary surveys say $128K. The $55K gap matters for every offer you negotiate this year.

Dev.to · DataDriven
🤖 AI Agents & Automation
⚡ AI Lesson
1mo ago
The AI Cheat Tool Your Interview Cannot See
48% of candidates are cheating technical interviews with invisible AI overlays. Screen share doesn't catch it. Here's what's actually happening.

Dev.to · DataDriven
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Half of Data Engineering Jobs on LinkedIn Aren't Real
Entry-level DE roles fell 67%. Nearly half of tech postings are ghost jobs. DE hiring is 'up 23%.' All three are true. Here's how that's possible.

Dev.to · DataDriven
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
3 Staff Engineers Couldn't Pass This Single DE Job Posting
A real 2026 DE job required SQL, Spark, Kafka, Flink, dbt, Terraform, K8s, and LLM skills. Three staff engineers reviewed it. Zero qualified.

Dev.to · DataDriven
📰 AI News & Updates
⚡ AI Lesson
1mo ago
AI Is Cutting DE Jobs. It's Also Creating Them. Here's the Map.
52K tech cuts in Q1, 56% citing AI. But DE hiring is up 23% YoY. Here's what's getting cut and what's replacing it.

Dev.to · DataDriven
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1mo ago
Data Engineer LeetCode: What to Grind and What to Skip
Most DE candidates grind the wrong LeetCode problems. Here is what actual interview loops test in SQL, Python, and system design in 2026.

Dev.to · DataDriven
🔧 Backend Engineering
⚡ AI Lesson
1mo ago
DE Interviews Dropped DSA. The Replacement Is a Mess.
Companies quietly killed LeetCode rounds for DE roles , but what replaced them is inconsistent, unpredictable, and harder to prep for than algorithms ever were.

Dev.to · DataDriven
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Data Engineer Salaries in 2026: The Numbers Are Lying
Glassdoor, Indeed, and PayScale disagree by $120K. Here's why every source is broken , and what your number should actually be.

Dev.to · DataDriven
🔄 Data Engineering
⚡ AI Lesson
2mo ago
Your Data Engineering Take-Home Is Now 20 Hours of Free Work
Take-homes grew from 4 hours to 20. No pay, no feedback, AI banned with no rubric updates. The DE interview is now just unpaid consulting.

Dev.to · DataDriven
🔄 Data Engineering
⚡ AI Lesson
2mo ago
Top 12 Pipeline Architecture Interview Questions, With Answers
12 real pipeline architecture interview questions with answers: batch vs streaming, idempotency, backfills, DAGs, schema evolution, and monitoring.

Dev.to · DataDriven
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
The 12 Data Modeling Interview Questions that Matter
I've watched candidates with 8 years of experience go blank when asked to define the grain of a fact...

Dev.to · DataDriven
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Top 12 Spark Interview Problems for Data Engineers, With Answers
12 real Spark interview problems on shuffle, skew, caching, AQE, window functions, and OOM debugging, with detailed answers.

Dev.to · DataDriven
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2mo ago
Top 12 SQL Interview Problems for Data Engineers, With Answers
Twelve real SQL interview problems covering window functions, joins, deduplication, and gaps. Each includes a full answer and explanation.

Dev.to · DataDriven
📐 ML Fundamentals
⚡ AI Lesson
2mo ago
Top 12 Python Interview Problems for Data Engineers, With Answers
12 real Python coding problems that appear in DE interviews, each with a clean solution and a plain-English explanation of why it works.

Dev.to · DataDriven
🤖 AI Agents & Automation
⚡ AI Lesson
2mo ago
80% of DE Candidates Use AI on Take-Homes. Companies Can't Stop It.
Companies ban AI in interviews. Candidates ignore the ban. Nobody can detect it. Here's what that means if you're job hunting right now.

Dev.to · DataDriven
🔄 Data Engineering
⚡ AI Lesson
2mo ago
Your Data Engineering Take-Home Is Free Labor
Take-homes ballooned from 3 hours to 20. Companies get a free pipeline build. You get a rejection. Here's how to spot it and push back.

Dev.to · DataDriven
🔄 Data Engineering
⚡ AI Lesson
3mo ago
Tech Lost 150K Jobs in 2026. Data Engineering Gained 414%.
While the tech industry hemorrhages jobs, data engineering demand is surging. Here's exactly why, and which skills put you on the right side of the split.

Dev.to · DataDriven
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3mo ago
DSA Is Dying in DE Interviews. Nobody Agrees on What's Next.
Companies are quietly dropping algorithmic rounds , and replacing them with nothing coherent. Here's the chaos data engineers are navigating in 2026.

Dev.to · DataDriven
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3mo ago
Junior Data Engineers Are Getting Wiped Out. Seniors Are Thriving.
52K+ tech cuts in Q1 2026, junior DE roles hit hardest. AI is doing entry-level work now. Here's the brutal split , and how to land on the right side.

Dev.to · DataDriven
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3mo ago
Data Engineer Salaries Are Splitting in Two. Which Side Are You On?
Google L4 hits $307K. Generalists can't get callbacks. The 2026 DE salary gap is widening fast , and most engineers don't know which side they're on.
DeepCamp AI