Checkr tech stack
Checkr builds mostly with Python, JavaScript, SQL, Ruby. Its stack also includes Anthropic, Snowflake, Spark, React.js. Anthropic is named in 84 of the 84 job postings Checkr published in the last 12 months (100%). Counted by Alion from the job postings of Checkr, updated Sep 27, 2026.
What programming languages does Checkr use?
Python is named in 19% of job postings at Checkr, followed by JavaScript (14%), SQL (12%), Ruby (12%).
What frameworks and libraries does Checkr use?
React.js is named in 7% of job postings at Checkr.
React.js
6 7%
What databases does Checkr use?
Snowflake is named in 12% of job postings at Checkr, followed by Redis (1%).
What cloud and platforms does Checkr use?
Anthropic is named in 100% of job postings at Checkr, followed by Spark (8%), AWS (7%), Apache Kafka (5%).
Spark
7 8%
AWS
6 7%
Apache Kafka
4 5%
Amazon EKS
3 4%
Show all (21)
What developer tools does Checkr use?
pySpark is named in 7% of job postings at Checkr, followed by Copilot (6%), dbt (5%), Adobe After Effects (1%).
pySpark
6 7%
Copilot
5 6%
dbt
4 5%
Adobe After Effects
1 1%
Cursor
1 1%
Git
1 1%
Show all (9)
What AI and ML technologies does Checkr use?
LLM is named in 10% of job postings at Checkr, followed by Claude (7%).
Which engineering practices does Checkr ask for?
AI Agents is named in 18% of job postings at Checkr, followed by Machine Learning (11%), Prompt Engineering (10%), A/B Testing (8%).
AI Agents
15 18%
Prompt Engineering
8 10%
Function Calling
6 7%
CI/CD
5 6%
Incident Management
5 6%
Show all (17)
What does each Checkr team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
13 postingsFinance
8 postingsAI/ML
7 postingsHow does your stack fit Checkr?
How much does Checkr pay by technology?
Median stated pay of the postings that name each technology, against the median of all Checkr postings with stated pay: $244k across 61 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Anthropic | 61 | $244k | 0% |
| Python | 9 | $244k | 0% |
| Snowflake | 8 | $244k | 0% |
| SQL | 8 | $204k | −17% |
| Ruby | 7 | $244k | 0% |
| LLM | 6 | $244k | 0% |
| Spark | 6 | $244k | 0% |
| Claude | 5 | $244k | 0% |
| JavaScript | 5 | $218k | −11% |
How is the Checkr stack changing?
Read from the dates of the postings themselves: a technology is new when the first posting that names it appeared in the last six months, rising or falling when its share of postings moved between the last two quarters.
How modern is the Checkr stack?
Checkr scores 84 out of 100 (Cutting-edge). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 2; legacy ones: 0.
How common is the Checkr stack in its industry?
Share of the 1,867 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Checkr apart
Companies with a stack like Checkr
Questions about the Checkr tech stack
What programming languages does Checkr use?
The languages named in Checkr job postings are Python (19%), JavaScript (14%), SQL (12%), Ruby (12%), Node JS (4%), as a share of the 84 postings of the last 12 months.
Does Checkr use React.js?
Yes. React.js is named in 6 of 84 job postings (7%) and required in 6 of them.
What cloud and platforms does Checkr use?
The cloud and platforms named in Checkr job postings are Anthropic (84), Spark (7), AWS (6) (postings in brackets).
What skills do you need for a Backend job at Checkr?
Backend postings at Checkr most often require Anthropic (13), JavaScript (10), Python (7), Ruby (7), out of 13 postings in the last 12 months.
Is the Checkr tech stack changing?
Yes. LLM Guardrails, Agentic Workflows, Structured Outputs, Amazon SageMaker first appeared in Checkr job postings in the last six months.
How modern is the Checkr tech stack?
Checkr scores 84 out of 100 (Cutting-edge). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 2; legacy ones: 0.
How does Alion know the Checkr tech stack?
Alion reads every job posting Checkr publishes and tags the technologies each one names. The figures on this page count the 84 postings of the last 12 months and were updated on Sep 27, 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, "Checkr tech stack: 57 technologies from 84 job postings", as of Sep 27, 2026. https://alion.io/company/checkr-2/technologies