Recruiting · Production

Instacart rethinks SQL interview to test AI-forward data science workflows with LLMs

The problem

Traditional SQL interviews requiring candidates to write code manually became ineffective once LLMs could solve the same questions with a simple prompt, making the format a poor test of actual on-the-job skills and unfair to candidates who do not write SQL daily.

Workflow diagram · grounded in source
1
Schemas and questions as prompt
trigger
“An example prompt would include the schemas above, the questions and the task”
2
LLM generates SQL
ai_action
“Ava is able to write all the necessary SQL to answer the interview questions”
3
SQL retrieves data insights
output
“translate business questions into code that retrieves the correct data from databases”
4
Candidate reviews LLM SQL
human_review
“Explain and debug a sample SQL query — this tests a candidate's ability to understand and fix LLM-generated SQL outputs”
Reported outcome

Instacart redesigned its SQL interview to test AI-forward skills — prompt engineering for SQL, debugging and explaining LLM-generated SQL, and identifying query optimizations — better reflecting how data scientists now work.

Reported metrics
time and effort for SQL codingsaving significant amounts of time and effort
Reported stack
AvaOpenAIGPT-4oSnowflake ArcticLlama 3–70B
Source
https://tech.instacart.com/data-science-spotlight-cracking-the-sql-interview-at-instacart-llm-edition-52d04bde474c
Read source ↗

Frequently asked questions

What did this team achieve with this AI workflow?

Instacart redesigned its SQL interview to test AI-forward skills — prompt engineering for SQL, debugging and explaining LLM-generated SQL, and identifying query optimizations — better reflecting how data scientists no…

What tools did this team use?

Ava, OpenAI, GPT-4o, Snowflake Arctic, Llama 3–70B.

What results were reported?

time and effort for SQL coding: saving significant amounts of time and effort (source-reported, not independently verified).

How is this recruiting AI workflow structured?

Schemas and questions as prompt → LLM generates SQL → SQL retrieves data insights → Candidate reviews LLM SQL.