LangChain
A framework for composing language-model applications.
- 7.0%
- of core AI postings mention it
- 246
- postings
- 202
- companies
History starts on September 11, 2026. Movement needs a comparable later edition at least 30 days on.
Where it is mentioned most
Each row divides by that role's postings in this edition, highest share first.
Postings in 8 role families mention LangChain in this edition.
In 1 of the 8 role families with a page of their own, at least one posting in five mentions LangChain: LLM / NLP Engineer 21.1%.
LangChain is more concentrated in LLM / NLP Engineer postings (21.1%) than across all core AI postings (7.0%): at least twice the overall share.
LangChain is in Frameworks: a framework, LLM or domain signal. Read it together with the foundation and production skills that appear with it below.
How the readings are made: "more concentrated than overall" means that in a role family with a page of its own, at least 10 postings mention the skill and its share is at least 2 times its share of all core AI postings; "common" means at least 20% of a role's postings mention it. They describe the postings open in this edition, not a trend.
- LLM / NLP Engineer21.1%37 of 175 postings · at least twice overall
- MLOps / Platform Engineer10.5%4 of 38 postings · Sample below the page threshold; not read
- AI Engineer10.1%176 of 1,741 postings
- Data Scientist5.3%8 of 151 postings
- AI Researcher3.3%2 of 60 postings · Sample below the page threshold; not read
- 3 of 225 postings
- 4 of 305 postings
- 1 of 321 postings
Skills that appear with it
Each share divides by the postings that mention LangChain: how many of them also mention each skill, grouped into three lenses.
Foundations and problem-solving
Categories: Languages, Machine learning, Data engineering, Databases, Methods and process
- Python90.2%Languages · 222 postings
- System Architecture48.8%Methods and process · 120 postings
- Vector Database43.5%Databases · 107 postings
Production and delivery
Categories: DevOps, Cloud, Tools
Framework, LLM and domain signals
Categories: Frameworks, LLM applications, Domain knowledge, Office software
- LLM92.7%LLM applications · 228 postings
- RAG78.9%LLM applications · 194 postings
- AI Agents64.6%LLM applications · 159 postings
- Prompt Engineering50.0%LLM applications · 123 postings
- Generative AI45.1%LLM applications · 111 postings
- ChatGPT42.7%LLM applications · 105 postings
- LlamaIndex41.9%Frameworks · 103 postings
Industries and places
Share of this skill's postings.
- Software & Internet9639.0%
- Electronics & Hardware4116.7%
- Finance & Insurance208.1%
- Semiconductor187.3%
- Wholesale, Retail & E-commerce166.5%
- Telecom, Media & Digital Content166.5%
- Healthcare & Biotech114.5%
- Manufacturing83.3%
- Consulting & Marketing Services62.4%
- Professional Services62.4%
- Construction & Real Estate31.2%
- Energy, Utilities & Natural Resources20.8%
- Taipei12550.8%
- New Taipei4217.1%
- Hsinchu City156.1%
- Taichung135.3%
- Taoyuan124.9%
- Kaohsiung124.9%
- Hsinchu County114.5%
- Tainan31.2%
- Miaoli31.2%
- Chiayi City20.8%
- Changhua20.8%
- Hualien20.8%
Where this number is read from
Of the 246 postings, how many were found through the employer's own skill tags, the title, and the job description. A posting can carry more than one kind of evidence, so the three add up to more than the posting count.
- Employer's skill tags0
- Job title1
- Job description246