# LangChain - **Answer**: LangChain builds mostly with Python, JavaScript, TypeScript, Go. Its stack also includes Cloudflare, AWS, PostgreSQL, Redis. Cloudflare is named in 153 of the 153 job postings LangChain published in the last 12 months (100%). Counted by Alion from the job postings of LangChain, updated Nov 12, 2026. - **Window days**: 365 - **Postings analysed**: 153 - **Open postings**: 96 - **Technologies in use**: 102 - **Modernity score**: 84 - **Ai adoption**: yes - **Own products**: LangGraph, LangChain, LangSmith - **License**: CC BY-SA 4.0 ## Company - **Id**: 4855 - **Name**: LangChain - **Domain**: langchain.com - **Url**: ## Technologies - **Cloudflare** — Layer: cloud; Postings: 153; Share: 1; Required: 153; Open postings: 96; First seen: 2025-02-10 - **AI Agents** — Layer: practices; Postings: 153; Share: 1; Required: 92; Open postings: 96; First seen: 2025-02-10 - **LLM** — Layer: ai; Postings: 70; Share: 0.4575; Required: 58; Open postings: 41; First seen: 2025-02-19 - **Python** — Layer: languages; Postings: 66; Share: 0.4314; Required: 63; Open postings: 34; First seen: 2025-02-10 - **AWS** — Layer: cloud; Postings: 52; Share: 0.3399; Required: 27; Open postings: 33; First seen: 2026-01-08 - **GCP** — Layer: cloud; Postings: 48; Share: 0.3137; Required: 23; Open postings: 29; First seen: 2026-01-08 - **Azure** — Layer: cloud; Postings: 46; Share: 0.3007; Required: 21; Open postings: 28; First seen: 2026-01-08 - **Kubernetes** — Layer: cloud; Postings: 43; Share: 0.281; Required: 17; Open postings: 23; First seen: 2026-01-18 - **JavaScript** — Layer: languages; Postings: 37; Share: 0.2418; Required: 27; Open postings: 19; First seen: 2025-02-10 - **TypeScript** — Layer: languages; Postings: 36; Share: 0.2353; Required: 30; Open postings: 20; First seen: 2025-02-19 - **Replit** — Layer: cloud; Postings: 24; Share: 0.1569; Required: 23; Open postings: 19; First seen: 2026-03-24 - **LLM Guardrails** — Layer: practices; Postings: 21; Share: 0.1373; Required: 1; Open postings: 10; First seen: 2026-01-18 - **PostgreSQL** — Layer: data; Postings: 17; Share: 0.1111; Required: 14; Open postings: 8; First seen: 2025-02-19 - **Go** — Layer: languages; Postings: 16; Share: 0.1046; Required: 15; Open postings: 8; First seen: 2025-02-19 - **RAG** — Layer: practices; Postings: 15; Share: 0.098; Required: 12; Open postings: 11; First seen: 2026-02-15 - **Platform Engineering** — Layer: practices; Postings: 14; Share: 0.0915; Required: 13; Open postings: 10; First seen: 2026-04-14 - **Redis** — Layer: data; Postings: 14; Share: 0.0915; Required: 12; Open postings: 6; First seen: 2025-02-19 - **Terraform** — Layer: tools; Postings: 14; Share: 0.0915; Required: 12; Open postings: 12; First seen: 2026-02-25 - **Datadog** — Layer: cloud; Postings: 13; Share: 0.085; Required: 10; Open postings: 10; First seen: 2026-04-14 - **Helm** — Layer: tools; Postings: 12; Share: 0.0784; Required: 10; Open postings: 11; First seen: 2026-04-14 - **Prometheus** — Layer: tools; Postings: 11; Share: 0.0719; Required: 10; Open postings: 9; First seen: 2026-04-14 - **A/B Testing** — Layer: practices; Postings: 10; Share: 0.0654; Required: 10; Open postings: 9; First seen: 2026-04-14 - **CI/CD** — Layer: practices; Postings: 10; Share: 0.0654; Required: 10; Open postings: 9; First seen: 2026-04-14 - **Grafana** — Layer: cloud; Postings: 10; Share: 0.0654; Required: 10; Open postings: 8; First seen: 2026-04-14 - **React.js** — Layer: frameworks; Postings: 10; Share: 0.0654; Required: 8; Open postings: 7; First seen: 2025-02-19 - **ClickHouse** — Layer: data; Postings: 10; Share: 0.0654; Required: 6; Open postings: 6; First seen: 2026-01-08 - **Amazon EKS** — Layer: cloud; Postings: 8; Share: 0.0523; Required: 8; Open postings: 8; First seen: 2026-04-14 - **Azure AKS** — Layer: cloud; Postings: 8; Share: 0.0523; Required: 8; Open postings: 8; First seen: 2026-04-14 - **GitOps** — Layer: practices; Postings: 8; Share: 0.0523; Required: 8; Open postings: 8; First seen: 2026-04-14 - **Google GKE** — Layer: cloud; Postings: 8; Share: 0.0523; Required: 8; Open postings: 8; First seen: 2026-04-14 - **Multi-Agent Systems** — Layer: practices; Postings: 8; Share: 0.0523; Required: 8; Open postings: 8; First seen: 2026-04-14 - **Prompt Engineering** — Layer: practices; Postings: 8; Share: 0.0523; Required: 8; Open postings: 8; First seen: 2026-04-14 - **Rest API** — Layer: tools; Postings: 6; Share: 0.0392; Required: 6; Open postings: 5; First seen: 2025-10-23 - **OpenTelemetry** — Layer: frameworks; Postings: 6; Share: 0.0392; Required: 2; Open postings: 3; First seen: 2026-05-06 - **SQL** — Layer: languages; Postings: 6; Share: 0.0392; Required: 1; Open postings: 3; First seen: 2026-08-26 - **Post-training** — Layer: practices; Postings: 5; Share: 0.0327; Required: 5; Open postings: 1; First seen: 2026-08-14 - **SFT** — Layer: practices; Postings: 5; Share: 0.0327; Required: 4; Open postings: 1; First seen: 2026-08-14 - **RLHF** — Layer: practices; Postings: 5; Share: 0.0327; Required: 0; Open postings: 1; First seen: 2026-08-14 - **AWS Bedrock** — Layer: cloud; Postings: 4; Share: 0.0261; Required: 4; Open postings: 4; First seen: 2026-08-14 - **Axolotl** — Layer: tools; Postings: 4; Share: 0.0261; Required: 0; Open postings: 1; First seen: 2026-08-27 - **DPO** — Layer: practices; Postings: 4; Share: 0.0261; Required: 0; Open postings: 1; First seen: 2026-08-27 - **Hugging Face** — Layer: cloud; Postings: 4; Share: 0.0261; Required: 0; Open postings: 1; First seen: 2026-08-27 - **TRL** — Layer: frameworks; Postings: 4; Share: 0.0261; Required: 0; Open postings: 1; First seen: 2026-08-27 - **Transformers** — Layer: frameworks; Postings: 4; Share: 0.0261; Required: 0; Open postings: 1; First seen: 2026-08-27 - **Unsloth** — Layer: frameworks; Postings: 4; Share: 0.0261; Required: 0; Open postings: 1; First seen: 2026-08-27 - **AWS Bedrock AgentCore** — Layer: cloud; Postings: 3; Share: 0.0196; Required: 3; Open postings: 3; First seen: 2026-11-02 - **Amazon S3** — Layer: cloud; Postings: 3; Share: 0.0196; Required: 3; Open postings: 1; First seen: 2026-05-13 - **Babel** — Layer: tools; Postings: 3; Share: 0.0196; Required: 3; Open postings: 3; First seen: 2026-08-12 - **Rust** — Layer: languages; Postings: 3; Share: 0.0196; Required: 3; Open postings: 1; First seen: 2026-05-13 - **Vite** — Layer: tools; Postings: 3; Share: 0.0196; Required: 3; Open postings: 3; First seen: 2026-08-12 - … 52 more in the JSON form ## Changes ### First appeared - **AWS Bedrock AgentCore** — First seen: 2026-11-02 - **Google BigQuery** — First seen: 2026-09-06 - **SLI/SLO/SLA** — First seen: 2026-09-06 - **dbt** — First seen: 2026-09-06 - **Axolotl** — First seen: 2026-08-27 - **DPO** — First seen: 2026-08-27 - **Hugging Face** — First seen: 2026-08-27 - **TRL** — First seen: 2026-08-27 ### Rising - **PostgreSQL** — Share from: 4; Share to: 16 - **SQL** — Share from: 0; Share to: 9 - **Redis** — Share from: 4; Share to: 12 - **Go** — Share from: 6; Share to: 12 - **Axolotl** — Share from: 0; Share to: 6 - **DPO** — Share from: 0; Share to: 6 - **Hugging Face** — Share from: 0; Share to: 6 - **TRL** — Share from: 0; Share to: 6 ### Falling - **Kubernetes** — Share from: 33; Share to: 13 - **Azure** — Share from: 35; Share to: 16 - **LLM Guardrails** — Share from: 22; Share to: 4 - **JavaScript** — Share from: 33; Share to: 18 - **GCP** — Share from: 35; Share to: 21 - **RAG** — Share from: 10; Share to: 0 - **Prometheus** — Share from: 6; Share to: 1 - **Rest API** — Share from: 8; Share to: 3 ## Similar stacks - [Rubrik](https://alion.io/company/rubrik/technologies) — Shared technologies: 77 - [Scale AI](https://alion.io/company/scale-ai/technologies) — Shared technologies: 78 - [Box](https://alion.io/company/box/technologies) — Shared technologies: 77 - [Exadel](https://alion.io/company/exadel-3/technologies) — Shared technologies: 72 - [Elastic](https://alion.io/company/elastic/technologies) — Shared technologies: 72 - [GitLab](https://alion.io/company/gitlab/technologies) — Shared technologies: 72 - [Coupa Software](https://alion.io/company/coupa/technologies) — Shared technologies: 69 - [Tekion](https://alion.io/company/tekion/technologies) — Shared technologies: 72 --- [Page](https://alion.io/company/langchain/technologies) · [JSON](https://alion.io/company/langchain/technologies.json) Source: Alion (alion.io), 2026-11-12. 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