# Cisco Systems - **Answer**: Cisco Systems builds mostly with Python, C++, Java, Go. Its stack also includes Kubernetes, AWS, PostgreSQL, React.js. Python is named in 1,121 of the 2,220 job postings Cisco Systems published in the last 12 months (50%). Counted by Alion from the job postings of Cisco Systems, updated Nov 10, 2026. - **Window days**: 365 - **Postings analysed**: 2220 - **Open postings**: 887 - **Technologies in use**: 638 - **Modernity score**: 75 - **Ai adoption**: yes - **Own products**: Splunk, Catalyst - **License**: CC BY-SA 4.0 ## Company - **Id**: 90 - **Name**: Cisco Systems - **Domain**: cisco.com - **Url**: ## Technologies - **Python** — Layer: languages; Postings: 1121; Share: 0.505; Required: 832; Open postings: 451; First seen: 2025-11-13 - **Kubernetes** — Layer: cloud; Postings: 511; Share: 0.2302; Required: 322; Open postings: 172; First seen: 2026-01-23 - **CI/CD** — Layer: practices; Postings: 502; Share: 0.2261; Required: 334; Open postings: 187; First seen: 2025-12-10 - **AWS** — Layer: cloud; Postings: 497; Share: 0.2239; Required: 264; Open postings: 179; First seen: 2026-03-25 - **Linux** — Layer: cloud; Postings: 395; Share: 0.1779; Required: 295; Open postings: 143; First seen: 2025-12-10 - **C++** — Layer: languages; Postings: 376; Share: 0.1694; Required: 306; Open postings: 162; First seen: 2025-12-10 - **AI Agents** — Layer: practices; Postings: 340; Share: 0.1532; Required: 269; Open postings: 137; First seen: 2026-06-09 - **GCP** — Layer: cloud; Postings: 317; Share: 0.1428; Required: 158; Open postings: 124; First seen: 2026-03-25 - **Azure** — Layer: cloud; Postings: 314; Share: 0.1414; Required: 149; Open postings: 113; First seen: 2026-03-25 - **Java** — Layer: languages; Postings: 273; Share: 0.123; Required: 214; Open postings: 98; First seen: 2026-01-23 - **Docker** — Layer: tools; Postings: 255; Share: 0.1149; Required: 158; Open postings: 76; First seen: 2026-02-10 - **Go** — Layer: languages; Postings: 211; Share: 0.095; Required: 188; Open postings: 63; First seen: 2026-03-25 - **Machine Learning** — Layer: practices; Postings: 199; Share: 0.0896; Required: 154; Open postings: 74; First seen: 2026-06-30 - **LLM** — Layer: ai; Postings: 198; Share: 0.0892; Required: 128; Open postings: 83; First seen: 2026-06-22 - **Rest API** — Layer: tools; Postings: 194; Share: 0.0874; Required: 126; Open postings: 84; First seen: 2026-04-09 - **Git** — Layer: tools; Postings: 194; Share: 0.0874; Required: 108; Open postings: 75; First seen: 2026-04-16 - **Terraform** — Layer: tools; Postings: 193; Share: 0.0869; Required: 106; Open postings: 70; First seen: 2026-03-25 - **JavaScript** — Layer: languages; Postings: 193; Share: 0.0869; Required: 77; Open postings: 70; First seen: 2026-01-23 - **SQL** — Layer: languages; Postings: 169; Share: 0.0761; Required: 123; Open postings: 60; First seen: 2026-04-20 - **Ansible** — Layer: tools; Postings: 144; Share: 0.0649; Required: 76; Open postings: 58; First seen: 2026-02-10 - **Copilot** — Layer: tools; Postings: 140; Share: 0.0631; Required: 95; Open postings: 46; First seen: 2026-04-20 - **BGP** — Layer: practices; Postings: 137; Share: 0.0617; Required: 101; Open postings: 62; First seen: 2026-06-21 - **Model Context Protocol** — Layer: tools; Postings: 134; Share: 0.0604; Required: 74; Open postings: 57; First seen: 2026-06-09 - **TypeScript** — Layer: languages; Postings: 128; Share: 0.0577; Required: 76; Open postings: 46; First seen: 2026-06-17 - **Perl** — Layer: languages; Postings: 125; Share: 0.0563; Required: 76; Open postings: 71; First seen: 2025-11-13 - **TCP/IP** — Layer: practices; Postings: 120; Share: 0.0541; Required: 85; Open postings: 43; First seen: 2026-04-16 - **Jenkins** — Layer: tools; Postings: 114; Share: 0.0514; Required: 50; Open postings: 35; First seen: 2026-06-11 - **Apache Kafka** — Layer: cloud; Postings: 108; Share: 0.0486; Required: 62; Open postings: 35; First seen: 2026-07-17 - **SystemVerilog** — Layer: languages; Postings: 105; Share: 0.0473; Required: 86; Open postings: 64; First seen: 2025-11-13 - **RAG** — Layer: practices; Postings: 97; Share: 0.0437; Required: 57; Open postings: 43; First seen: 2026-07-06 - **SIEM** — Layer: cloud; Postings: 94; Share: 0.0423; Required: 61; Open postings: 42; First seen: 2026-07-15 - **Cursor** — Layer: tools; Postings: 93; Share: 0.0419; Required: 61; Open postings: 28; First seen: 2026-04-20 - **Grafana** — Layer: cloud; Postings: 92; Share: 0.0414; Required: 37; Open postings: 40; First seen: 2026-06-16 - **Prometheus** — Layer: tools; Postings: 92; Share: 0.0414; Required: 30; Open postings: 42; First seen: 2026-06-16 - **PostgreSQL** — Layer: data; Postings: 88; Share: 0.0396; Required: 56; Open postings: 33; First seen: 2026-07-06 - **React.js** — Layer: frameworks; Postings: 87; Share: 0.0392; Required: 55; Open postings: 28; First seen: 2026-07-01 - **Verilog** — Layer: languages; Postings: 87; Share: 0.0392; Required: 49; Open postings: 46; First seen: 2025-11-13 - **Unix** — Layer: cloud; Postings: 84; Share: 0.0378; Required: 68; Open postings: 32; First seen: 2026-05-28 - **Claude** — Layer: ai; Postings: 84; Share: 0.0378; Required: 57; Open postings: 25; First seen: 2026-06-03 - **OSPF** — Layer: practices; Postings: 83; Share: 0.0374; Required: 63; Open postings: 38; First seen: 2026-06-26 - **OpenAI Codex** — Layer: tools; Postings: 83; Share: 0.0374; Required: 55; Open postings: 27; First seen: 2026-04-20 - **Agentic Workflows** — Layer: practices; Postings: 81; Share: 0.0365; Required: 61; Open postings: 29; First seen: 2026-07-10 - **Windows** — Layer: cloud; Postings: 74; Share: 0.0333; Required: 56; Open postings: 33; First seen: 2026-04-16 - **Microsoft Excel** — Layer: tools; Postings: 73; Share: 0.0329; Required: 55; Open postings: 22; First seen: 2026-07-09 - **DNS** — Layer: practices; Postings: 69; Share: 0.0311; Required: 53; Open postings: 27; First seen: 2026-03-25 - **Snowflake** — Layer: data; Postings: 68; Share: 0.0306; Required: 47; Open postings: 24; First seen: 2026-06-29 - **Platform Engineering** — Layer: practices; Postings: 66; Share: 0.0297; Required: 60; Open postings: 30; First seen: 2026-03-25 - **Angular** — Layer: frameworks; Postings: 66; Share: 0.0297; Required: 43; Open postings: 26; First seen: 2026-06-17 - **GitHub** — Layer: cloud; Postings: 66; Share: 0.0297; Required: 38; Open postings: 19; First seen: 2026-06-11 - **Tableau** — Layer: cloud; Postings: 66; Share: 0.0297; Required: 37; Open postings: 20; First seen: 2026-06-24 - … 588 more in the JSON form ## Changes ### First appeared - **Atlantis** — First seen: 2026-10-30 - **Cosign** — First seen: 2026-10-28 - **Sigstore** — First seen: 2026-10-28 - **Cadence Quantus** — First seen: 2026-10-27 - **KLayout** — First seen: 2026-10-27 - **Prisma Cloud** — First seen: 2026-10-27 - **D3.js** — First seen: 2026-10-27 - **Quarkus** — First seen: 2026-10-23 ### Rising - **Machine Learning** — Share from: 6; Share to: 10 - **Go** — Share from: 7; Share to: 10 - **Agentic Workflows** — Share from: 1; Share to: 4 ### Falling - **SystemVerilog** — Share from: 10; Share to: 3 - **Verilog** — Share from: 8; Share to: 3 - **UVM** — Share from: 6; Share to: 2 - **Perl** — Share from: 8; Share to: 5 - **Unix** — Share from: 6; Share to: 3 - **Grafana** — Share from: 6; Share to: 4 ### Not seen 180d - **Fortran** — Last seen: 2026-04-30 ## Similar stacks - [HCLTech](https://alion.io/company/hcltech/technologies) — Shared technologies: 533 - [NVIDIA](https://alion.io/company/nvidia/technologies) — Shared technologies: 455 - [Hewlett Packard Enterprise](https://alion.io/company/hewlett-packard-enterprise/technologies) — Shared technologies: 394 - [Apple](https://alion.io/company/apple/technologies) — Shared technologies: 466 - [Qualcomm](https://alion.io/company/qualcomm/technologies) — Shared technologies: 422 - [Amazon](https://alion.io/company/amazon/technologies) — Shared technologies: 481 - [Capgemini](https://alion.io/company/capgemini/technologies) — Shared technologies: 505 - [Siemens](https://alion.io/company/siemens/technologies) — Shared technologies: 376 --- [Page](https://alion.io/company/cisco-systems/technologies) · [JSON](https://alion.io/company/cisco-systems/technologies.json) Source: Alion (alion.io), 2026-11-10. 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