# Checkr - **Answer**: Checkr builds mostly with Python, SQL, JavaScript, Ruby. Its stack also includes Anthropic, Snowflake, AWS, React.js. Anthropic is named in 112 of the 113 job postings Checkr published in the last 12 months (99%). Counted by Alion from the job postings of Checkr, updated Nov 12, 2026. - **Window days**: 365 - **Postings analysed**: 113 - **Open postings**: 37 - **Technologies in use**: 64 - **Modernity score**: 84 - **Ai adoption**: yes - **License**: CC BY-SA 4.0 ## Company - **Id**: 171758 - **Name**: Checkr - **Domain**: checkr.com - **Url**: ## Technologies - **Anthropic** — Layer: cloud; Postings: 112; Share: 0.9912; Required: 112; Open postings: 37; First seen: 2025-05-27 - **AI Agents** — Layer: practices; Postings: 16; Share: 0.1416; Required: 16; Open postings: 2; First seen: 2026-04-02 - **Python** — Layer: languages; Postings: 16; Share: 0.1416; Required: 13; Open postings: 2; First seen: 2025-11-12 - **SQL** — Layer: languages; Postings: 14; Share: 0.1239; Required: 14; Open postings: 5; First seen: 2025-05-27 - **JavaScript** — Layer: languages; Postings: 13; Share: 0.115; Required: 13; Open postings: 2; First seen: 2025-05-27 - **Claude** — Layer: ai; Postings: 11; Share: 0.0973; Required: 9; Open postings: 5; First seen: 2026-03-17 - **Ruby** — Layer: languages; Postings: 11; Share: 0.0973; Required: 8; Open postings: 3; First seen: 2025-05-27 - **Machine Learning** — Layer: practices; Postings: 10; Share: 0.0885; Required: 7; Open postings: 1; First seen: 2026-04-02 - **Snowflake** — Layer: data; Postings: 10; Share: 0.0885; Required: 2; Open postings: 2; First seen: 2025-11-12 - **Prompt Engineering** — Layer: practices; Postings: 8; Share: 0.0708; Required: 6; Open postings: 1; First seen: 2026-04-02 - **LLM** — Layer: ai; Postings: 8; Share: 0.0708; Required: 5; Open postings: 1; First seen: 2026-04-02 - **A/B Testing** — Layer: practices; Postings: 7; Share: 0.0619; Required: 7; Open postings: 1; First seen: 2026-04-20 - **React.js** — Layer: frameworks; Postings: 7; Share: 0.0619; Required: 7; Open postings: 2; First seen: 2026-03-13 - **AWS** — Layer: cloud; Postings: 7; Share: 0.0619; Required: 4; Open postings: 2; First seen: 2025-11-12 - **Spark** — Layer: cloud; Postings: 7; Share: 0.0619; Required: 1; Open postings: 2; First seen: 2025-11-12 - **CI/CD** — Layer: practices; Postings: 6; Share: 0.0531; Required: 6; Open postings: 2; First seen: 2025-05-27 - **Function Calling** — Layer: practices; Postings: 6; Share: 0.0531; Required: 6; Open postings: 1; First seen: 2026-08-31 - **pySpark** — Layer: tools; Postings: 6; Share: 0.0531; Required: 1; Open postings: 2; First seen: 2025-11-12 - **Agentic Workflows** — Layer: practices; Postings: 5; Share: 0.0442; Required: 5; Open postings: 2; First seen: 2026-09-04 - **Copilot** — Layer: tools; Postings: 5; Share: 0.0442; Required: 5; Open postings: 1; First seen: 2026-08-31 - **Incident Management** — Layer: practices; Postings: 5; Share: 0.0442; Required: 5; Open postings: 0; First seen: 2026-08-17 - **Amazon S3** — Layer: cloud; Postings: 4; Share: 0.0354; Required: 4; Open postings: 2; First seen: 2025-11-12 - **Structured Outputs** — Layer: practices; Postings: 4; Share: 0.0354; Required: 4; Open postings: 1; First seen: 2026-09-04 - **Apache Kafka** — Layer: cloud; Postings: 4; Share: 0.0354; Required: 1; Open postings: 1; First seen: 2025-11-12 - **Amazon SageMaker** — Layer: cloud; Postings: 4; Share: 0.0354; Required: 0; Open postings: 1; First seen: 2026-09-04 - **OCR** — Layer: practices; Postings: 4; Share: 0.0354; Required: 0; Open postings: 1; First seen: 2026-09-04 - **dbt** — Layer: tools; Postings: 4; Share: 0.0354; Required: 0; Open postings: 1; First seen: 2026-09-04 - **Amazon EKS** — Layer: cloud; Postings: 3; Share: 0.0265; Required: 3; Open postings: 1; First seen: 2025-11-12 - **Cursor** — Layer: tools; Postings: 3; Share: 0.0265; Required: 3; Open postings: 1; First seen: 2026-07-29 - **ETL/ELT** — Layer: practices; Postings: 3; Share: 0.0265; Required: 3; Open postings: 1; First seen: 2025-11-12 - **Looker** — Layer: cloud; Postings: 3; Share: 0.0265; Required: 3; Open postings: 1; First seen: 2026-03-17 - **Node JS** — Layer: languages; Postings: 3; Share: 0.0265; Required: 3; Open postings: 1; First seen: 2026-04-20 - **OpenAI** — Layer: cloud; Postings: 3; Share: 0.0265; Required: 3; Open postings: 1; First seen: 2026-09-04 - **Rest API** — Layer: tools; Postings: 3; Share: 0.0265; Required: 3; Open postings: 2; First seen: 2025-07-16 - **FinOps** — Layer: practices; Postings: 3; Share: 0.0265; Required: 1; Open postings: 0; First seen: 2026-07-29 - **Kubernetes** — Layer: cloud; Postings: 3; Share: 0.0265; Required: 1; Open postings: 1; First seen: 2025-11-12 - **Databricks** — Layer: cloud; Postings: 3; Share: 0.0265; Required: 0; Open postings: 1; First seen: 2025-11-12 - **MLFlow** — Layer: cloud; Postings: 3; Share: 0.0265; Required: 0; Open postings: 1; First seen: 2026-09-04 - **AWS Lambda** — Layer: cloud; Postings: 2; Share: 0.0177; Required: 2; Open postings: 1; First seen: 2026-04-01 - **Figma** — Layer: cloud; Postings: 2; Share: 0.0177; Required: 2; Open postings: 1; First seen: 2026-09-01 - **Lovable** — Layer: tools; Postings: 2; Share: 0.0177; Required: 2; Open postings: 0; First seen: 2026-07-29 - **NLP** — Layer: practices; Postings: 2; Share: 0.0177; Required: 2; Open postings: 0; First seen: 2026-05-26 - **RAG** — Layer: practices; Postings: 2; Share: 0.0177; Required: 2; Open postings: 0; First seen: 2026-04-02 - **Human-in-the-Loop** — Layer: practices; Postings: 2; Share: 0.0177; Required: 1; Open postings: 2; First seen: 2026-10-05 - **Azure** — Layer: cloud; Postings: 2; Share: 0.0177; Required: 0; Open postings: 0; First seen: 2026-04-02 - **GCP** — Layer: cloud; Postings: 2; Share: 0.0177; Required: 0; Open postings: 0; First seen: 2026-04-02 - **Adobe After Effects** — Layer: tools; Postings: 1; Share: 0.0088; Required: 1; Open postings: 0; First seen: 2026-09-01 - **Alteryx** — Layer: tools; Postings: 1; Share: 0.0088; Required: 1; Open postings: 0; First seen: 2026-08-21 - **Amazon Aurora** — Layer: data; Postings: 1; Share: 0.0088; Required: 1; Open postings: 1; First seen: 2026-10-26 - **Git** — Layer: tools; Postings: 1; Share: 0.0088; Required: 1; Open postings: 0; First seen: 2026-03-13 - … 14 more in the JSON form ## Changes ### First appeared - **Human-in-the-Loop** — First seen: 2026-10-05 - **Agentic Workflows** — First seen: 2026-09-04 - **Structured Outputs** — First seen: 2026-09-04 - **Amazon SageMaker** — First seen: 2026-09-04 - **OCR** — First seen: 2026-09-04 - **dbt** — First seen: 2026-09-04 - **OpenAI** — First seen: 2026-09-04 - **MLFlow** — First seen: 2026-09-04 ### Rising - **AI Agents** — Share from: 4; Share to: 17 - **LLM** — Share from: 0; Share to: 8 - **Function Calling** — Share from: 0; Share to: 8 - **CI/CD** — Share from: 0; Share to: 6 - **Agentic Workflows** — Share from: 0; Share to: 6 - **Copilot** — Share from: 0; Share to: 6 - **Incident Management** — Share from: 0; Share to: 6 - **Machine Learning** — Share from: 4; Share to: 9 ### Falling - **React.js** — Share from: 13; Share to: 3 - **JavaScript** — Share from: 17; Share to: 9 - **Ruby** — Share from: 13; Share to: 6 ### Not seen 180d - **RAG** — Last seen: 2026-04-07 - **Azure** — Last seen: 2026-04-07 - **GCP** — Last seen: 2026-04-07 ## Similar stacks - [Clara](https://alion.io/company/clara-com/technologies) — Shared technologies: 59 - [Hinge Health](https://alion.io/company/hinge-health/technologies) — Shared technologies: 57 - [Shyftlabs](https://alion.io/company/shyftlabs/technologies) — Shared technologies: 59 - [Toast](https://alion.io/company/toasttab/technologies) — Shared technologies: 59 - [Zendesk](https://alion.io/company/zendesk/technologies) — Shared technologies: 58 - [Nordstrom](https://alion.io/company/nordstrom/technologies) — Shared technologies: 57 - [Cornerstone OnDemand](https://alion.io/company/cornerstone-ondemand/technologies) — Shared technologies: 60 - [Coupa Software](https://alion.io/company/coupa/technologies) — Shared technologies: 58 --- [Page](https://alion.io/company/checkr-2/technologies) · [JSON](https://alion.io/company/checkr-2/technologies.json) Source: Alion (alion.io), 2026-11-12. 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