81Un
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LLM & Generative AI
Professional Services
Cybersecurity
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Tech stack
Technologies named in job postings at 81Un over the last 12 months, by layer, with the share of postings for each.
Technologies in use
102
Postings analysed
45
Stack modernity
84/100AI adopter
Languages
Python33%
C++18%
SQL11%
Java7%
Frameworks & libraries
Transformers16%
Flink11%
Hadoop7%
PyTorch7%
Databases
Milvus4%
MySQL4%
Qdrant4%
HBase2%
Cloud & platforms
Linux18%
AWS11%
Spark9%
Apache Kafka7%
AI & ML
LLM11%
ChatGPT2%
LoRA2%
VLM2%
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Full 81Un tech stack
102 technologies · by team · pay by technology · changes · similar stacks
Growth
Hiring Momentum
28/100
Slowing
Open positions
227
0 opened / 0 closed in 30 days
ATS activity
Every ~4 hours
Today
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Sales
29% ▲
AI/ML
9% ▲
Solutions
9% ▲
Industrial Engineering
8%
Operations
7%
Product
6% ▼
Actively hiring for Sales (+20 in 30 days)
Offices
Where the company hires and what each office is for
Cities
21
Hiring now
21
Countries
1
Busiest office
Beijing
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Headquarters
Builds here
Office with open vacancies
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Beijing
China
HQ
99 open roles 62 posted in 90 days 26% engineering
hires for Sales, AI/ML, Operations
Shanghai
China
Plant / site
29 open roles 18 posted in 90 days 14% engineering
hires for Sales, Solutions, Support
Shenzhen
China
Regional office
22 open roles 18 posted in 90 days 9% engineering
hires for Sales, Product, Support
Hangzhou
China
Sales office
12 open roles 7 posted in 90 days
hires for Sales, Industrial Engineering, Solutions
Guangzhou
China
Regional office
12 open roles 3 posted in 90 days 8% engineering
hires for Sales, Industrial Engineering, Early Careers
Hefei
China
Regional office
11 open roles 7 posted in 90 days 45% engineering
hires for Industrial Engineering, QA, Backend
Wuhan
China
Engineering / R&D
8 open roles 2 posted in 90 days 88% engineering
hires for Backend, DevOps, AI/ML
Xi'an
China
Regional office
7 open roles 4 posted in 90 days 29% engineering
hires for DevOps, Early Careers, Solutions
Chengdu
China
Regional office
5 open roles 3 posted in 90 days 40% engineering
hires for Data Science, Backend, Sales
Nanjing
China
Sales office
5 open roles 4 posted in 90 days
hires for Sales, Legal, Industrial Engineering
Harbin
China
Sales office
5 open roles 1 posted in 90 days 20% engineering
hires for Sales, DevOps
Xiamen
China
Sales office
3 open roles 33% engineering
hires for Sales, DevOps
Xining
China
2 open roles 50% engineering
hires for DevOps, Solutions
Qingdao
China
1 open roles
hires for Sales
Shenyang
China
1 open roles 1 posted in 90 days
hires for Sales
Ningbo
China
1 open roles 1 posted in 90 days
hires for Industrial Engineering
Kunming
China
1 open roles 1 posted in 90 days
hires for Early Careers
Wenzhou
China
1 open roles
hires for Solutions
Wuhu
China
1 open roles 1 posted in 90 days 100% engineering
hires for DevOps
Jinhua
China
1 open roles
hires for Solutions
Ürümqi
China
1 open roles
hires for Early Careers
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