# Preferred Networks - **Answer**: Preferred Networks builds mostly with Python, C++, Java, Rust. Its stack also includes AWS, Linux, Scikit-learn, PyTorch. Python is named in 30 of the 56 job postings Preferred Networks published in the last 12 months (54%). Counted by Alion from the job postings of Preferred Networks, updated Nov 14, 2026. - **Window days**: 365 - **Postings analysed**: 56 - **Open postings**: 50 - **Technologies in use**: 94 - **Modernity score**: 83 - **Ai adoption**: yes - **License**: CC BY-SA 4.0 ## Company - **Id**: 130 - **Name**: Preferred Networks - **Domain**: preferred.jp - **Url**: ## Technologies - **Python** — Layer: languages; Postings: 30; Share: 0.5357; Required: 30; Open postings: 29; First seen: 2026-09-24 - **LLM** — Layer: ai; Postings: 29; Share: 0.5179; Required: 27; Open postings: 27; First seen: 2026-09-24 - **C++** — Layer: languages; Postings: 23; Share: 0.4107; Required: 21; Open postings: 20; First seen: 2026-09-24 - **Java** — Layer: languages; Postings: 15; Share: 0.2679; Required: 15; Open postings: 15; First seen: 2026-09-24 - **AWS** — Layer: cloud; Postings: 12; Share: 0.2143; Required: 5; Open postings: 11; First seen: 2026-09-24 - **Machine Learning** — Layer: practices; Postings: 11; Share: 0.1964; Required: 10; Open postings: 10; First seen: 2026-09-24 - **Linux** — Layer: cloud; Postings: 11; Share: 0.1964; Required: 8; Open postings: 10; First seen: 2026-09-24 - **GCP** — Layer: cloud; Postings: 10; Share: 0.1786; Required: 4; Open postings: 9; First seen: 2026-09-24 - **Unix** — Layer: cloud; Postings: 9; Share: 0.1607; Required: 5; Open postings: 9; First seen: 2026-09-24 - **Rust** — Layer: languages; Postings: 8; Share: 0.1429; Required: 5; Open postings: 7; First seen: 2026-09-24 - **Kubernetes** — Layer: cloud; Postings: 7; Share: 0.125; Required: 5; Open postings: 7; First seen: 2026-09-24 - **GitHub** — Layer: cloud; Postings: 7; Share: 0.125; Required: 3; Open postings: 6; First seen: 2026-09-24 - **Scikit-learn** — Layer: frameworks; Postings: 7; Share: 0.125; Required: 1; Open postings: 7; First seen: 2026-09-24 - **.NET** — Layer: cloud; Postings: 5; Share: 0.0893; Required: 5; Open postings: 5; First seen: 2026-09-24 - **HPC** — Layer: practices; Postings: 5; Share: 0.0893; Required: 5; Open postings: 4; First seen: 2026-09-24 - **VLM** — Layer: ai; Postings: 5; Share: 0.0893; Required: 4; Open postings: 5; First seen: 2026-09-24 - **PyTorch** — Layer: frameworks; Postings: 5; Share: 0.0893; Required: 3; Open postings: 5; First seen: 2026-09-24 - **C#** — Layer: languages; Postings: 5; Share: 0.0893; Required: 0; Open postings: 5; First seen: 2026-09-24 - **Multimodal AI** — Layer: practices; Postings: 4; Share: 0.0714; Required: 4; Open postings: 4; First seen: 2026-09-24 - **Post-training** — Layer: practices; Postings: 4; Share: 0.0714; Required: 4; Open postings: 4; First seen: 2026-09-24 - **Pre-training** — Layer: practices; Postings: 4; Share: 0.0714; Required: 4; Open postings: 4; First seen: 2026-09-24 - **Qwen** — Layer: ai; Postings: 4; Share: 0.0714; Required: 3; Open postings: 4; First seen: 2026-09-24 - **RAG** — Layer: practices; Postings: 3; Share: 0.0536; Required: 3; Open postings: 3; First seen: 2026-09-24 - **TypeScript** — Layer: languages; Postings: 3; Share: 0.0536; Required: 3; Open postings: 3; First seen: 2026-09-24 - **CI/CD** — Layer: practices; Postings: 3; Share: 0.0536; Required: 2; Open postings: 3; First seen: 2026-09-24 - **DeepSpeed** — Layer: frameworks; Postings: 3; Share: 0.0536; Required: 1; Open postings: 3; First seen: 2026-09-24 - **FSDP** — Layer: frameworks; Postings: 3; Share: 0.0536; Required: 1; Open postings: 3; First seen: 2026-09-24 - **AWS CDK** — Layer: tools; Postings: 3; Share: 0.0536; Required: 0; Open postings: 3; First seen: 2026-09-24 - **Git** — Layer: tools; Postings: 3; Share: 0.0536; Required: 0; Open postings: 2; First seen: 2026-09-24 - **Terraform** — Layer: tools; Postings: 3; Share: 0.0536; Required: 0; Open postings: 3; First seen: 2026-09-24 - **AI Agents** — Layer: practices; Postings: 2; Share: 0.0357; Required: 2; Open postings: 2; First seen: 2026-09-24 - **Fine-tuning** — Layer: practices; Postings: 2; Share: 0.0357; Required: 2; Open postings: 2; First seen: 2026-09-24 - **Node JS** — Layer: languages; Postings: 2; Share: 0.0357; Required: 2; Open postings: 1; First seen: 2026-09-24 - **NumPy** — Layer: frameworks; Postings: 2; Share: 0.0357; Required: 2; Open postings: 1; First seen: 2026-09-24 - **OpenAI** — Layer: cloud; Postings: 2; Share: 0.0357; Required: 2; Open postings: 2; First seen: 2026-09-24 - **PowerShell** — Layer: languages; Postings: 2; Share: 0.0357; Required: 2; Open postings: 1; First seen: 2026-09-24 - **Quantization** — Layer: practices; Postings: 2; Share: 0.0357; Required: 2; Open postings: 1; First seen: 2026-09-24 - **Reinforcement Learning** — Layer: practices; Postings: 2; Share: 0.0357; Required: 2; Open postings: 2; First seen: 2026-09-24 - **Vision-Language-Action** — Layer: practices; Postings: 2; Share: 0.0357; Required: 2; Open postings: 2; First seen: 2026-09-24 - **vLLM** — Layer: cloud; Postings: 2; Share: 0.0357; Required: 2; Open postings: 1; First seen: 2026-09-24 - **Amazon S3** — Layer: cloud; Postings: 2; Share: 0.0357; Required: 1; Open postings: 2; First seen: 2026-09-24 - **InfiniBand** — Layer: tools; Postings: 2; Share: 0.0357; Required: 1; Open postings: 1; First seen: 2026-09-24 - **KV Cache** — Layer: practices; Postings: 2; Share: 0.0357; Required: 1; Open postings: 1; First seen: 2026-09-24 - **LangChain** — Layer: frameworks; Postings: 2; Share: 0.0357; Required: 1; Open postings: 2; First seen: 2026-09-24 - **SFT** — Layer: practices; Postings: 2; Share: 0.0357; Required: 1; Open postings: 2; First seen: 2026-09-24 - **SLAM** — Layer: practices; Postings: 2; Share: 0.0357; Required: 1; Open postings: 2; First seen: 2026-09-24 - **Transformers** — Layer: frameworks; Postings: 2; Share: 0.0357; Required: 1; Open postings: 2; First seen: 2026-09-24 - **Windows** — Layer: cloud; Postings: 2; Share: 0.0357; Required: 1; Open postings: 1; First seen: 2026-09-24 - **JavaScript** — Layer: languages; Postings: 2; Share: 0.0357; Required: 0; Open postings: 1; First seen: 2026-09-24 - **SIEM** — Layer: cloud; Postings: 2; Share: 0.0357; Required: 0; Open postings: 1; First seen: 2026-09-24 - … 44 more in the JSON form ## Similar stacks - [StepFun](https://alion.io/company/stepfun-com/technologies) — Shared technologies: 58 - [Scale AI](https://alion.io/company/scale-ai/technologies) — Shared technologies: 63 - [Horizon Robotics](https://alion.io/company/horizon-robotics/technologies) — Shared technologies: 56 - [Agency for Science, Technology and Research](https://alion.io/company/a-star-edu/technologies) — Shared technologies: 70 - [Mistral AI](https://alion.io/company/mistral-ai/technologies) — Shared technologies: 58 - [Centific](https://alion.io/company/centific/technologies) — Shared technologies: 56 - [Cerebras Systems](https://alion.io/company/cerebras-systems/technologies) — Shared technologies: 59 - [Huawei Technologies](https://alion.io/company/huawei/technologies) — Shared technologies: 67 --- [Page](https://alion.io/company/preferred-networks/technologies) · [JSON](https://alion.io/company/preferred-networks/technologies.json) Source: Alion (alion.io), 2026-11-14. 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