📰 Dev.to · DataDriven

5,800 Data Engineers across 122 countries answered 50 questions. The platform splits, GenAI adoption gaps, and Airflow 3 reality are worth knowing.

Deletion vectors, row lineage, a VARIANT type: Apache Iceberg v3 is GA on Snowflake and Databricks. Here is what each change means in production.

Companies killed algorithm rounds but replaced them with 4 incompatible formats, AI bans 80% ignore, and no rules anyone agrees on. Here is the chaos map.

The salary hierarchy just flipped. Senior DEs clear $179K base. AI engineers hit $280K TC. Here is what changed and what it means for your title.

DE take-homes now run 20 hours. Senior engineers fail new-grad screens. Loops last 90 days. The interview is broken in a new, expensive way.

48% of candidates use AI in interviews despite bans. 61% of them get offers anyway. The cost lands on the engineers who follow the rules.

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.

The biggest DE layoff of 2026 just flooded your job market. What the Confluent massacre means for Kafka careers, streaming skills, and where the 800 land.

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.

Companies finally dropped algorithm rounds. What came next: no rubrics, AI bans, 15-hour take-homes, and zero data modeling. Meet the new broken.

The take-home assignment replaced the whiteboard and somehow made data engineering interviews worse. Here's what's actually happening.

Career pages show a $185K median. Salary surveys say $128K. The $55K gap matters for every offer you negotiate this year.

48% of candidates are cheating technical interviews with invisible AI overlays. Screen share doesn't catch it. Here's what's actually happening.

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.

A real 2026 DE job required SQL, Spark, Kafka, Flink, dbt, Terraform, K8s, and LLM skills. Three staff engineers reviewed it. Zero qualified.

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.

Most DE candidates grind the wrong LeetCode problems. Here is what actual interview loops test in SQL, Python, and system design in 2026.

Companies quietly killed LeetCode rounds for DE roles , but what replaced them is inconsistent, unpredictable, and harder to prep for than algorithms ever were.

Glassdoor, Indeed, and PayScale disagree by $120K. Here's why every source is broken , and what your number should actually be.

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.

12 real pipeline architecture interview questions with answers: batch vs streaming, idempotency, backfills, DAGs, schema evolution, and monitoring.

I've watched candidates with 8 years of experience go blank when asked to define the grain of a fact...

12 real Spark interview problems on shuffle, skew, caching, AQE, window functions, and OOM debugging, with detailed answers.

Twelve real SQL interview problems covering window functions, joins, deduplication, and gaps. Each includes a full answer and explanation.