Hazel tech stack
Hazel builds mostly with SQL, TypeScript, Python. Its stack also includes Prefect, DuckDB, Dagster. SQL is named in 5 of the 9 job postings Hazel published in the last 12 months (56%). Counted by Alion from the job postings of Hazel, updated Oct 2, 2026.
What programming languages does Hazel use?
SQL is named in 56% of job postings at Hazel, followed by TypeScript (44%), Python (33%).
What frameworks and libraries does Hazel use?
Dagster is named in 33% of job postings at Hazel.
Dagster
3 33%
What cloud and platforms does Hazel use?
Prefect is named in 33% of job postings at Hazel.
Prefect
3 33%
Which engineering practices does Hazel ask for?
AI Agents is named in 78% of job postings at Hazel, followed by A/B Testing (44%), Function Calling (44%), Human-in-the-Loop (44%).
What does each Hazel team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
3 postingsHow does your stack fit Hazel?
How modern is the Hazel stack?
Hazel scores 74 out of 100 (Modern). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 1; legacy ones: 0.
Companies with a stack like Hazel
Questions about the Hazel tech stack
What programming languages does Hazel use?
The languages named in Hazel job postings are SQL (56%), TypeScript (44%), Python (33%), as a share of the 9 postings of the last 12 months.
What cloud and platforms does Hazel use?
The cloud and platforms named in Hazel job postings are Prefect (3) (postings in brackets).
What skills do you need for a Backend job at Hazel?
Backend postings at Hazel most often require LLM (3), TypeScript (3), out of 3 postings in the last 12 months.
Is the Hazel tech stack changing?
No new technology has appeared in Hazel job postings in the last six months.
How modern is the Hazel tech stack?
Hazel scores 74 out of 100 (Modern). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 1; legacy ones: 0.
How does Alion know the Hazel tech stack?
Alion reads every job posting Hazel publishes and tags the technologies each one names. The figures on this page count the 9 postings of the last 12 months and were updated on Oct 2, 2026.
Method and citation
Alion reads every job posting the company publishes and tags the technologies each one names. Shares count the postings of the last 12 months, open and closed; the company's own products are counted apart. How we count
Alion, "Hazel tech stack: 13 technologies from 9 job postings", as of Oct 2, 2026. https://alion.io/company/fromhazel/technologies