Meta Data Engineer Interview (IC4)
Meta's Data Engineer loop ((IC4) short) emphasizes SQL-heavy with fast-paced coding expectations and a product-sense orientation. Candidates who clear it demonstrate shipped production pipelines end-to-end and can debug them when they break backed by roughly 2-5 years.
Compensation
$175K–$215K base • $300K–$420K total (IC4)
Loop duration
3.8 hours onsite
Rounds
5 rounds
Location
Menlo Park, NYC, Seattle, London, remote for select teams
Compensation
Meta Data Engineer total comp
Offer-report aggregate, 2019-2026. Level mapped: L4. Typical experience: 4-10 years (median 6).
25th percentile
$214K
Median total comp
$254K
75th percentile
$371K
Median base salary
$172K
Median annual equity
$61K
Median total comp by year
Practice problems
Meta data engineer practice set
Interview problems predicted for Meta data engineers based on their actual job descriptions. Click any problem to work it in a live coding environment.
Event Ticketing System Data Model
We run an IT helpdesk platform. Users submit support tickets, which are assigned to agents. Tickets go through multiple status changes before being resolved. SLA compliance is critical: P1 tickets must be resolved within 4 hours, P2 within 24 hours. Design the schema, and describe how you would load data from a JSON API feed into it.
The Queue That Wouldn't Stop Growing
Your streaming video event pipeline shows consumer lag spiking from near-zero to over 500,000 messages within two hours. You need to diagnose whether the cause is a producer burst or a consumer slowdown, then design a monitoring and auto-remediation system that can detect, alert on, and automatically recover from future lag events.
Housing Marketplace Analytics
We run a housing marketplace. Sellers list properties, buyers view listings and submit leads. We need to measure conversion rate from view to lead by location and property type. Design the data model.
Viewing Event Pipeline
We need to track what our subscribers are watching. This data feeds everything from our recommendation models to operations dashboards that monitor playback quality in real time. Design a data pipeline for our viewing events.
Count distinct users active in the trailing 7 days for each date. Product analytics staple.
The loop
How the interview actually runs
01Recruiter screen
30 minNon-technical. The recruiter confirms level, product area (Ads, Integrity, Instagram, Reality Labs), and motivations. How you describe past work signals IC3/IC4/IC5.
- →Quantify everything: row counts, daily event volumes, TB processed
- →Research the specific team. Meta has dozens of DE teams with different tech stacks
- →Ask whether the loop includes a Python round; some teams do, some don't
02Technical phone screen
45 minLive SQL coding, 1-2 problems, in a shared doc with no syntax highlighting. Problems emphasize window functions, multi-step logic, and event-stream schemas.
- →Think out loud from the start, silence worries the interviewer
- →Expect window functions: ROW_NUMBER, LAG, LEAD, running totals
- →Ask clarifying questions: NULL handling, duplicates, timezone of timestamps
03Onsite: SQL deep-dive
45 min2-3 SQL problems with increasing complexity. The last often adds an optimization discussion: 'Your solution works, now make it efficient on 500B rows.'
- →Practice writing SQL without autocomplete. Meta uses a shared doc
- →When discussing optimization, mention partition pruning, predicate pushdown
- →Use CTEs to break complex queries into readable steps
04Onsite: Python / data manipulation
45 minPractical data work, not LeetCode. Parse JSON logs, transform nested structures, write a data validation function, build a small ETL step.
- →Practice file I/O, dictionary manipulation, list comprehensions
- →Write helper functions instead of one monolithic block
- →Handle edge cases explicitly, empty inputs, missing keys, malformed data
Level bar
What Meta 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.
Meta-specific emphasis
Meta's loop is characterized by: SQL-heavy with fast-paced coding expectations and a product-sense orientation. Calibrate your preparation to that, generic FAANG prep will not close the gap on company-specific expectations.
Behavioral
How Meta frames behavioral rounds
Move Fast
Meta's culture rewards shipping and iterating. Stories about shipping a V1, measuring, and iterating land harder than stories about getting a design perfect before launch.
Focus on Long-Term Impact
Paired with Move Fast. Meta wants DEs who ship fast without creating 3-year tech debt. Balance matters.
Build Awesome Things
Meta wants people who care deeply about craft. Your ETL pipeline is not just a job, it is a thing you built.
Live in the Future
Senior and above: betting on the technology curve. Candidates who talk about where data infrastructure is going in 3 years land strongly.
Prep timeline
Week-by-week preparation plan
Foundations and gap analysis
- ·Do 10 medium SQL problems. Note which patterns feel slow
- ·Write out 2-3 behavioral stories per value, Meta weights this round heavily
- ·Read Meta's public engineering blog for recent architecture patterns
- ·Review your prior production work, pick 3-5 projects you can discuss in depth
SQL and coding fluency
- ·Practice window functions until DENSE_RANK, ROW_NUMBER, LAG, LEAD are reflex
- ·Do 20+ Meta-style problems in their domain
- ·Time yourself: 25 min per medium, 35 min per hard
- ·Record yourself narrating approach aloud, communication is graded
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
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 Meta news or earnings call for fresh talking points
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
FAQ
Common questions
- What level is Data Engineer at Meta?
- At Meta, Data Engineer corresponds to the IC4 level. The bar emphasizes shipped production pipelines end-to-end and can debug them when they break without people-management responsibilities.
- How much does a Meta Data Engineer make?
- Looking at 204 sampled offers from 2019-2026, Meta Data Engineer total comp comes in at $254K median, ranging from $214K to $371K, median base $172K and median annual equity $61K. Typical experience range: 4-10 years..
- How is the Data Engineer loop different from other levels at Meta?
- The format of the loop matches other levels; difficulty and evaluation shift to shipped production pipelines end-to-end and can debug them when they break, and questions at this level dig into production pipeline ownership and on-call debugging.
- How long should I prepare for the Meta Data Engineer interview?
- Most working DEs find 6-8 weeks is about right. The technical prep scales with experience; the behavioral story bank is where candidates underestimate time.
- Does Meta interview data engineers differently than software engineers?
- Yes, the DE track at Meta emphasizes SQL depth, warehouse and pipeline design, and real production data experience (late data, backfills, quality checks), which generalist SWE loops don't test.
Continue your prep
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