岗 ZaigangZAIGANG WIKI · zaig.zai.cn

Every role, every industry — written by everyone · ISSUE 03
Roles explained, industries unpacked, written by everyone, shared everywhere

INDUSTRY KNOWLEDGE BASE · 8 ENTRIES

Industry Knowledge Base

No filler: only the micro-notes people actually use, plus how many companies this industry contains and how they are distributed.

Each industry covers ecosystem, company-size distribution, role demand, trends, common roles and take-away micro-notes.

01
INDUSTRY 01 · Internet & Software

Internet & Software

Software products and online services, defined by fast iteration and high engineering maturity.

From acquisition to retention Engineering efficiency as a core metric AI toolchains reshaping development

~128,000 related companies

1 notesmicro-notes
4 Common roles
31,260 reads

Micro-notes worth knowing

01 ENTRIES · each with a read count
Product · K01
An MVP is not half a product

It must fully validate one hypothesis. Cut scope, not the completeness of the core experience.

9,840 reads
02
INDUSTRY 02 · Artificial Intelligence

Artificial Intelligence

Model capability, data assets and inference cost, spanning compute through applications.

From demos to stable business loops Latency and cost as product constraints Evaluation sets matter more than model choice

~24,000 related companies

1 notesmicro-notes
4 Common roles
35,840 reads

Micro-notes worth knowing

01 ENTRIES · each with a read count
Evaluation · K01
Invest in the eval set

Without a stable, realistic evaluation set, changing models is guesswork.

11,260 reads
03
INDUSTRY 03 · Financial Technology

Financial Technology

Where technology meets regulated finance; correctness and compliance outrank speed.

Real-time risk and anti-fraud Tighter compliance requirements Core system modernisation

~16,000 related companies

1 notesmicro-notes
4 Common roles
21,470 reads

Micro-notes worth knowing

01 ENTRIES · each with a read count
Fund safety · K01
Money paths must be idempotent

Use a unique business transaction ID plus a state machine — retries and redelivery are normal.

8,920 reads
04
INDUSTRY 04 · E-Commerce

E-Commerce

Goods, traffic, checkout and fulfilment, with long chains and sharp traffic peaks.

From campaign peaks to daily operations Content and shelf converge Fulfilment driving repeat purchase

~320,000 related companies

1 notesmicro-notes
4 Common roles
27,650 reads

Micro-notes worth knowing

01 ENTRIES · each with a read count
Metrics · K01
Split GMV into three factors

Traffic × conversion × basket size — locate the factor before optimising.

10,240 reads
05
INDUSTRY 05 · Healthcare

Healthcare

Highly regulated and specialised; digital work must respect clinical validity and privacy.

Interoperability across providers AI assistance entering clinical validation Growing out-of-hospital care

~86,000 related companies

1 notesmicro-notes
4 Common roles
15,980 reads

Micro-notes worth knowing

01 ENTRIES · each with a read count
Workflow · K01
Clinical pathway before product flow

Registration, consultation, prescription and follow-up have mandatory order — never skip a step for UX.

6,740 reads
06
INDUSTRY 06 · Education & Training

Education & Training

Measured by learning outcomes and retention, serving learners, teachers and parents at once.

From seat time to measurable outcomes AI practice and personalised drills Growing adult upskilling

~180,000 related companies

1 notesmicro-notes
4 Common roles
14,320 reads

Micro-notes worth knowing

01 ENTRIES · each with a read count
Metrics · K01
Completion beats enrolment

Enrolment proves marketing worked; completion and homework predict renewal.

6,810 reads
07
INDUSTRY 07 · Smart Manufacturing

Smart Manufacturing

Connects equipment, lines and business systems into a data loop where IT meets OT.

Edge computing on the shop floor Visual inspection automation Digital planning and supply chains

~92,000 related companies

1 notesmicro-notes
4 Common roles
12,640 reads

Micro-notes worth knowing

01 ENTRIES · each with a read count
Data · K01
Unify timestamps first

If PLCs, devices and MES clocks drift, every time-series analysis is wrong.

5,620 reads
08
INDUSTRY 08 · New Energy

New Energy

Storage, solar, charging and V2G, where hardware and software are tightly coupled.

Energy management software rising Finer charging network operations Full-lifecycle asset management

~57,000 related companies

1 notesmicro-notes
4 Common roles
13,750 reads

Micro-notes worth knowing

01 ENTRIES · each with a read count
Storage · K01
SOC is not simple division

Temperature, ageing and C-rate shift state-of-charge; filtering and model fusion are standard.

5,940 reads
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Roles