# ByteDance - **Answer**: ByteDance builds mostly with C++, Python, Java, Go. Its stack also includes PyTorch, TensorFlow, Redis, Kubernetes. C++ is named in 1,999 of the 4,437 job postings ByteDance published in the last 12 months (45%). Counted by Alion from the job postings of ByteDance, updated Nov 14, 2026. - **Window days**: 365 - **Postings analysed**: 4437 - **Open postings**: 3950 - **Technologies in use**: 487 - **Modernity score**: 75 - **Ai adoption**: yes - **License**: CC BY-SA 4.0 ## Company - **Id**: 13 - **Name**: ByteDance - **Domain**: bytedance.com - **Url**: ## Technologies - **C++** — Layer: languages; Postings: 1999; Share: 0.4505; Required: 1987; Open postings: 1814; First seen: 2018-07-19 - **Python** — Layer: languages; Postings: 1531; Share: 0.3451; Required: 1475; Open postings: 1392; First seen: 2018-07-19 - **Java** — Layer: languages; Postings: 1110; Share: 0.2502; Required: 1100; Open postings: 1028; First seen: 2018-07-19 - **LLM** — Layer: ai; Postings: 767; Share: 0.1729; Required: 726; Open postings: 700; First seen: 2020-05-19 - **AI Agents** — Layer: practices; Postings: 411; Share: 0.0926; Required: 394; Open postings: 377; First seen: 2021-07-12 - **NLP** — Layer: practices; Postings: 375; Share: 0.0845; Required: 349; Open postings: 352; First seen: 2019-02-22 - **Go** — Layer: languages; Postings: 331; Share: 0.0746; Required: 321; Open postings: 294; First seen: 2019-08-27 - **RAG** — Layer: practices; Postings: 293; Share: 0.066; Required: 270; Open postings: 266; First seen: 2021-02-23 - **PyTorch** — Layer: frameworks; Postings: 292; Share: 0.0658; Required: 260; Open postings: 242; First seen: 2019-08-21 - **Machine Learning** — Layer: practices; Postings: 288; Share: 0.0649; Required: 248; Open postings: 262; First seen: 2021-03-14 - **JavaScript** — Layer: languages; Postings: 255; Share: 0.0575; Required: 146; Open postings: 232; First seen: 2018-12-25 - **PHP** — Layer: languages; Postings: 234; Share: 0.0527; Required: 234; Open postings: 215; First seen: 2021-09-07 - **TensorFlow** — Layer: frameworks; Postings: 233; Share: 0.0525; Required: 219; Open postings: 192; First seen: 2019-08-21 - **Redis** — Layer: data; Postings: 218; Share: 0.0491; Required: 206; Open postings: 197; First seen: 2020-06-18 - **Multimodal AI** — Layer: practices; Postings: 192; Share: 0.0433; Required: 177; Open postings: 184; First seen: 2022-01-20 - **Kubernetes** — Layer: cloud; Postings: 189; Share: 0.0426; Required: 151; Open postings: 172; First seen: 2019-12-31 - **Function Calling** — Layer: practices; Postings: 185; Share: 0.0417; Required: 169; Open postings: 165; First seen: 2021-04-08 - **VLM** — Layer: ai; Postings: 168; Share: 0.0379; Required: 165; Open postings: 151; First seen: 2018-12-10 - **SFT** — Layer: practices; Postings: 164; Share: 0.037; Required: 156; Open postings: 150; First seen: 2021-05-24 - **Linux** — Layer: cloud; Postings: 160; Share: 0.0361; Required: 137; Open postings: 141; First seen: 2019-12-25 - **Prompt Engineering** — Layer: practices; Postings: 158; Share: 0.0356; Required: 142; Open postings: 137; First seen: 2021-04-28 - **Model Context Protocol** — Layer: tools; Postings: 157; Share: 0.0354; Required: 150; Open postings: 130; First seen: 2021-02-20 - **SQL** — Layer: languages; Postings: 150; Share: 0.0338; Required: 125; Open postings: 132; First seen: 2018-12-28 - **Kotlin** — Layer: languages; Postings: 148; Share: 0.0334; Required: 143; Open postings: 140; First seen: 2020-06-02 - **TypeScript** — Layer: languages; Postings: 144; Share: 0.0325; Required: 134; Open postings: 135; First seen: 2019-07-17 - **RLHF** — Layer: practices; Postings: 131; Share: 0.0295; Required: 115; Open postings: 124; First seen: 2019-02-22 - **CUDA** — Layer: frameworks; Postings: 128; Share: 0.0288; Required: 100; Open postings: 106; First seen: 2019-12-31 - **Flink** — Layer: frameworks; Postings: 123; Share: 0.0277; Required: 112; Open postings: 109; First seen: 2019-07-28 - **Rust** — Layer: languages; Postings: 122; Share: 0.0275; Required: 122; Open postings: 107; First seen: 2021-04-12 - **TensorFlow C++** — Layer: frameworks; Postings: 115; Share: 0.0259; Required: 105; Open postings: 91; First seen: 2019-09-11 - **Claude Code** — Layer: tools; Postings: 110; Share: 0.0248; Required: 106; Open postings: 98; First seen: 2022-04-08 - **vLLM** — Layer: cloud; Postings: 102; Share: 0.023; Required: 72; Open postings: 92; First seen: 2024-03-04 - **Objective-C** — Layer: languages; Postings: 100; Share: 0.0225; Required: 98; Open postings: 94; First seen: 2019-07-15 - **LangChain** — Layer: frameworks; Postings: 98; Share: 0.0221; Required: 57; Open postings: 85; First seen: 2019-02-22 - **Apache Kafka** — Layer: cloud; Postings: 97; Share: 0.0219; Required: 81; Open postings: 81; First seen: 2018-09-13 - **Recommender Systems** — Layer: practices; Postings: 97; Share: 0.0219; Required: 80; Open postings: 90; First seen: 2024-12-13 - **Reinforcement Learning** — Layer: practices; Postings: 97; Share: 0.0219; Required: 72; Open postings: 82; First seen: 2023-07-27 - **SGLang** — Layer: frameworks; Postings: 91; Share: 0.0205; Required: 60; Open postings: 80; First seen: 2024-03-18 - **Claude** — Layer: ai; Postings: 90; Share: 0.0203; Required: 79; Open postings: 85; First seen: 2022-05-16 - **MySQL** — Layer: data; Postings: 89; Share: 0.0201; Required: 78; Open postings: 79; First seen: 2020-08-14 - **Docker** — Layer: tools; Postings: 87; Share: 0.0196; Required: 70; Open postings: 77; First seen: 2021-10-15 - **Vue.js** — Layer: frameworks; Postings: 84; Share: 0.0189; Required: 84; Open postings: 79; First seen: 2020-06-15 - **Spark** — Layer: cloud; Postings: 82; Share: 0.0185; Required: 70; Open postings: 74; First seen: 2018-12-28 - **Computer Vision** — Layer: practices; Postings: 81; Share: 0.0183; Required: 59; Open postings: 77; First seen: 2023-07-17 - **Post-training** — Layer: practices; Postings: 77; Share: 0.0174; Required: 54; Open postings: 73; First seen: 2024-02-29 - **Hadoop** — Layer: frameworks; Postings: 76; Share: 0.0171; Required: 62; Open postings: 66; First seen: 2018-09-13 - **TCP/IP** — Layer: practices; Postings: 75; Share: 0.0169; Required: 64; Open postings: 68; First seen: 2021-12-02 - **Fine-tuning** — Layer: practices; Postings: 72; Share: 0.0162; Required: 62; Open postings: 65; First seen: 2023-11-16 - **GRPO** — Layer: practices; Postings: 67; Share: 0.0151; Required: 60; Open postings: 60; First seen: 2020-06-30 - **Triton** — Layer: frameworks; Postings: 66; Share: 0.0149; Required: 51; Open postings: 55; First seen: 2024-09-24 - … 437 more in the JSON form ## Changes ### First appeared - **Active Directory** — First seen: 2026-11-05 - **VMWare** — First seen: 2026-11-05 - **Helm** — First seen: 2026-11-03 - **Imitation Learning** — First seen: 2026-09-21 - **Sim-to-Real** — First seen: 2026-09-21 - **Isaac Lab** — First seen: 2026-09-21 - **Apache Hudi** — First seen: 2026-09-02 - **Apache Iceberg** — First seen: 2026-09-02 ### Rising - **SQL** — Share from: 4; Share to: 9 - **Machine Learning** — Share from: 6; Share to: 10 - **Recommender Systems** — Share from: 1; Share to: 4 - **Reinforcement Learning** — Share from: 2; Share to: 5 - **Azure** — Share from: 1; Share to: 3 ### Falling - **VLM** — Share from: 4; Share to: 1 - **PHP** — Share from: 6; Share to: 4 ### Not seen 180d - **GStreamer** — Last seen: 2026-04-14 - **Trino** — Last seen: 2026-05-06 - **Bootstrap** — Last seen: 2026-03-10 - **QLoRA** — Last seen: 2026-04-15 - **Tailwind CSS** — Last seen: 2026-02-03 - **NuttX** — Last seen: 2026-01-07 - **GraalVM** — Last seen: 2026-04-28 - **OpenJDK** — Last seen: 2026-04-28 ## Similar stacks - [Alibaba Group](https://alion.io/company/alibaba-group/technologies) — Shared technologies: 371 - [TikTok](https://alion.io/company/tiktok/technologies) — Shared technologies: 294 - [Baidu](https://alion.io/company/baidu/technologies) — Shared technologies: 258 - [Xiaohongshu](https://alion.io/company/xiaohongshu/technologies) — Shared technologies: 230 - [Tencent](https://alion.io/company/tencent/technologies) — Shared technologies: 259 - [Qualcomm](https://alion.io/company/qualcomm/technologies) — Shared technologies: 356 - [NVIDIA](https://alion.io/company/nvidia/technologies) — Shared technologies: 374 - [Google](https://alion.io/company/google/technologies) — Shared technologies: 327 --- [Page](https://alion.io/company/bytedance/technologies) · [JSON](https://alion.io/company/bytedance/technologies.json) Source: Alion (alion.io), 2026-11-14. 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