What level is Data Engineer at Oracle?

Oracle uses L4 to designate Data Engineers; this is an IC-track level focused on shipped production pipelines end-to-end and can debug them when they break.

How much does a Oracle Data Engineer make?

Oracle Data Engineer offers span $75K-$240K across 127 samples from 2021-2026, with a median of $150K, median base $120K and median annual equity $45K. Typical experience range: 5-15 years..

How long should I prepare for the Oracle Data Engineer interview?

6-8 weeks is the standard window for a working DE. Less than 4 weeks almost always means cutting the behavioral prep short.

Does Oracle interview data engineers differently than software engineers?

The tracks diverge. DE at Oracle weights SQL and pipeline-design rounds, and interviewers expect specific production data experience that SWE loops don't probe.

Interview Guide · 2026

Oracle Data Engineer Interview (L4)

Hiring for Data Engineer at Oracle (L4) runs Enterprise-database heritage meeting OCI cloud ambitions. The hiring bar is shipped production pipelines end-to-end and can debug them when they break; the median candidate brings 2-5 years of DE experience.

Compensation

$135K–$170K base • $190K–$270K total

Loop duration

3 hours onsite

Rounds

4 rounds

Location

Austin, Redwood Shores, Seattle, Dublin, Bangalore

Compensation

Oracle Data Engineer total comp

Across 127 samples

Offer-report aggregate, 2021-2026. Level mapped: L4. Typical experience: 5-15 years (median 10).

25th percentile

$75K

Median total comp

$150K

75th percentile

$240K

Median base salary

$120K

Median annual equity

$45K

Median total comp by year

2023

$207K n=4

2024

$191K n=13

2025

$150K n=52

2026

$121K n=54

Practice problems

Oracle data engineer practice set

4 problems

Practice sets surfaced for Oracle data engineer candidates by the same model that reads their job postings. Each card opens a working coding environment.

SQLeasy~5 min

Clean Latency Cast

During a data quality investigation, you found that the latency column in service health records contains some non-numeric strings. Return all records with latency converted to an integer, excluding any rows where the conversion would fail. Return all available fields.

Open in practice environment→

Pythonmedium~20 min

The Coin Vault

Given a target amount and a list of coin denominations, return the minimum coins needed using a greedy strategy: repeatedly take the largest coin that does not exceed the remaining amount. Return -1 if the greedy approach cannot make exact change.

Open in practice environment→

SQLmedium~16 min

Top Batch Job Under Priority 1

Among batch jobs with priority equal to 1, find the job(s) with the highest rows_done value. If multiple jobs tie at that value, return all of them. Show the job id, job name, and rows_done.

Open in practice environment→

Pythoneasy~10 min

The Spread

Given a list of numbers, return the sample variance (sum of squared deviations divided by n-1), rounded to 2 decimals. Return 0.0 when fewer than 2 numbers.

Open in practice environment→

Try itTop 2 sellers by revenue in each marketplace

Classic DE round opener. Window function + partition. Edit to tweak the threshold.

top_sellers.sql

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WITH seller_totals AS (
  SELECT marketplace, seller_id, SUM(amount) AS revenue
  FROM seller_orders
  GROUP BY marketplace, seller_id
),
ranked AS (
  SELECT marketplace, seller_id, revenue,
    DENSE_RANK() OVER (
      PARTITION BY marketplace ORDER BY revenue DESC
    ) AS rk
  FROM seller_totals
)
SELECT marketplace, seller_id, revenue
FROM ranked
WHERE rk <= 2
ORDER BY marketplace, revenue DESC;
WITH seller_totals AS (
  SELECT marketplace, seller_id, SUM(amount) AS revenue
  FROM seller_orders
  GROUP BY marketplace, seller_id
),
ranked AS (
  SELECT marketplace, seller_id, revenue,
    DENSE_RANK() OVER (
      PARTITION BY marketplace ORDER BY revenue DESC
    ) AS rk
  FROM seller_totals
)
SELECT marketplace, seller_id, revenue
FROM ranked
WHERE rk <= 2
ORDER BY marketplace, revenue DESC;

Click Run to execute. Edit the code above to experiment.

The loop

How the interview actually runs

01Recruiter screen

30 min

Oracle hires across OCI (Oracle Cloud), legacy Database, NetSuite, and Oracle Health (Cerner). OCI is the growth area; legacy teams have different culture.

→OCI is AWS-competitor territory; interviewers have high cloud expectations
→Legacy database teams value depth over velocity
→SQL fluency is assumed; Oracle flavors (PL/SQL) a plus

02Technical phone screen

60 min

SQL-heavy. Oracle interviewers will test SQL depth beyond typical DE loops — expect window functions, hierarchical queries (CONNECT BY), and optimization questions.

→Know Oracle SQL specifics: CONNECT BY, MERGE, ROWNUM, MODEL clause
→Query plan reading (EXPLAIN PLAN) often comes up
→Practice hierarchy queries (employee/manager trees)

03Onsite: data architecture

60 min

Design a data pipeline with OCI services. Oracle's proprietary stack matters: Autonomous Database, Object Storage, OCI Data Integration, Big Data Service.

→Know OCI primitives; Oracle expects engineers to use their stack
→Discuss migration from legacy Oracle to modern OCI
→Cost is a real constraint; Oracle positions on price vs AWS

04Onsite: behavioral + legacy fit

45 min

Oracle's engineering culture is less fast-paced than FAANG. Expect questions about working in mature systems and long-term maintenance.

→Stories about maintaining multi-year systems beat startup velocity stories
→Interfacing with non-engineers (sales, DBAs, support) matters
→Acknowledge Oracle's enterprise reality without being cynical

Level bar

What Oracle expects at Data Engineer

Pipeline ownership

Mid-level DEs own pipelines end-to-end. Interviewers expect stories about designing, deploying, and maintaining a data pipeline that has been in production for 6+ months.

SQL + Python or Spark fluency

SQL is the floor. Most teams also expect fluency in either Python for data manipulation (pandas, airflow DAGs) or Spark for larger-scale processing.

On-call debugging

You should have concrete stories about production incidents: what alert fired, how you diagnosed, what you fixed, and what post-mortem action you owned.

Oracle-specific emphasis

Oracle's loop is characterized by: Enterprise-database heritage meeting OCI cloud ambitions. Calibrate your preparation to that, generic FAANG prep will not close the gap on company-specific expectations.

Behavioral

How Oracle frames behavioral rounds

Technical mastery

Oracle's reputation is depth. Engineers who are junior-strong but shallow stand out negatively.

“What's a SQL or database topic you know at the deepest level?”

Long-term perspective

Oracle systems run for decades. Engineers who think in 10-year horizons fit.

“Describe a system you built that's still running 5+ years later.”

Enterprise empathy

Oracle's customers are risk-averse enterprises. Engineers who dismiss their needs don't thrive.

“Tell me about working with a customer who had stringent compliance requirements.”

Reliability over novelty

Oracle sells reliability. Engineers who chase new tools over proven ones lose.

“When have you picked a boring technology over a cutting-edge one?”

Prep timeline

Week-by-week preparation plan

8-10 weeks out

Foundations and gap analysis

·Do 10 medium SQL problems. Note which patterns feel slow
·Write out 2-3 behavioral stories per value, Oracle weights this round heavily
·Read Oracle's public engineering blog for recent architecture patterns
·Review your prior production work, pick 3-5 projects you can discuss in depth

6 weeks out

SQL and coding fluency

·Practice window functions until DENSE_RANK, ROW_NUMBER, LAG, LEAD are reflex
·Do 20+ Oracle-style problems in their domain
·Time yourself: 25 min per medium, 35 min per hard
·Record yourself narrating approach aloud, communication is graded

4 weeks out

Pipeline awareness and behavioral depth

·Review pipeline architecture basics: idempotency, partitioning, backfill
·Practice explaining a pipeline you've worked on end-to-end in 5 minutes
·Refine behavioral stories based on mock feedback
·Do 10 more SQL problems at medium difficulty

2 weeks out

Behavioral polish and mock loops

·Rehearse every story out loud. Cut to 2-3 minutes each
·Run 2 full mock loops with a mid-level DE or coach
·Identify your 3 weakest behavioral areas and draft additional stories
·Review recent Oracle news or earnings call for fresh talking points

Week of

Taper and logistics

·No new content. Review your notes only
·Sleep. Mental energy matters more than one more practice problem
·Confirm logistics: laptop charged, shared-doc tool tested, snack and water nearby
·Remember: interviewers want to find reasons to hire you, not to reject you

Other guides you'll want

Oracle Junior Data Engineer→Oracle Senior Data Engineer→Oracle Staff Data Engineer→Oracle Principal Data Engineer→Amazon Data Engineer→Meta Data Engineer→Google Data Engineer→Oracle Data Engineer Salary→Data Engineer Interview Prep (hub)→

FAQ

Common questions

What level is Data Engineer at Oracle?: Oracle uses L4 to designate Data Engineers; this is an IC-track level focused on shipped production pipelines end-to-end and can debug them when they break.
How much does a Oracle Data Engineer make?: Oracle Data Engineer offers span $75K-$240K across 127 samples from 2021-2026, with a median of $150K, median base $120K and median annual equity $45K. Typical experience range: 5-15 years..
How is the Data Engineer loop different from other levels at Oracle?: Data Engineer loops run the same stages as other levels, but interviewers calibrate difficulty to shipped production pipelines end-to-end and can debug them when they break, especially around production pipeline ownership and on-call debugging.
How long should I prepare for the Oracle Data Engineer interview?: 6-8 weeks is the standard window for a working DE. Less than 4 weeks almost always means cutting the behavioral prep short.
Does Oracle interview data engineers differently than software engineers?: The tracks diverge. DE at Oracle weights SQL and pipeline-design rounds, and interviewers expect specific production data experience that SWE loops don't probe.

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Published 2026-04-20Updated 2026-04-20