The document discusses the use of Python in large companies from the perspective of a Python engineer. It covers three types of industries that use Python, three levels of Python expertise, and the speaker's experience working with Python in a large company. The speaker discusses how large companies differ from expectations, focusing more on internal infrastructure than specific libraries and requiring expertise beyond what can be gained from websites like Stack Overflow. The goal is to avoid mistakes made by focusing too much on job descriptions rather than real-world experience.

1. A Python Engineer
Under Giant Umbrella
Kir Chou @ PyConTW 2018

2. 2

3. 3

4. kir.chou note35kirchou
4My road

5. 5
them ?

6. Category
- 3 types of industries
- 3 levels in python
- Python in giant company
- My Experience
6

7. types
of
industries
7

8. G8

9. G
Why do they choose Python?
9
• Migrating from Perl to Python
• General Script Language
• Validation, EDA Tool (RD)
• Integration Test (QA)
• Automation (DevOps)
• Data Analysis (Data)

10. G 10
Job Description
Object-Oriented programming languages; JavaScript;
HTML; DHTML; CSS; C; C++; SQL; Perl; Python; Tool
Command Language (TCL); R; Shell script
1. Collect and document user's requirements and develop
logical and physical specifications;
2. Research, evaluate and synthesize technical
information to design, develop and test computer-
based systems;
3. Develop data, process and network models to optimize
architecture and to evaluate the performance and
reliability of designs;
4. Plan, design and co-ordinate the development,
installation, integration and operation of computer-
based systems;
5. Assess, troubleshoot, document, upgrade and develop
maintenance procedures for operating systems,
communications environments and applications
software

11. G 11
Job Description
Object-Oriented programming languages; JavaScript;
HTML; DHTML; CSS; C; C++; SQL; Perl; Python; Tool
Command Language (TCL); R; Shell script
1. Collect and document user's requirements and develop
logical and physical specifications;
2. Research, evaluate and synthesize technical
information to design, develop and test computer-
based systems;
3. Develop data, process and network models to optimize
architecture and to evaluate the performance and
reliability of designs;
4. Plan, design and co-ordinate the development,
installation, integration and operation of computer-
based systems;
5. Assess, troubleshoot, document, upgrade and develop
maintenance procedures for operating systems,
communications environments and applications
software

12. G 12
Why do they choose Python?
• No legacy Perl debt
• General Language
• App/API/Data Process (SE)
• Automation (DevOps)
• Integration Test (QE)
• Data Engineer
• Data Analysis (Data)

13. G 13
Job Description
• Specific Skills:
1. practical knowledge related to databases MySQL or
PostgreSQL
2. Cassandra, Kafka, Elasticsearch, SQL, Redis, ZMQ,
Hadoop, AWS, Apache Solr…
3. Excellent Python (2.x and ideally 3.x) and Django (1.8+)
• Clear Title
4. Django React Full Stack Developer

14. 14

15. G 15
Why do they choose Python?
• Migrating from Perl to Python
• General Language

16. G 16
Job Description
• Over X years’ experience in
software development
• Experience with OOP language
including Python

17. G 17
Job Description
• Over X years’ experience in
software development
• Experience with OOP language
including Python

18. Levels
In
Python
18

19. from os import *
env_list = [param for param in dir(environ)]
if '__len__' in dir(env_list):
available_attr_num = len(env_list)
19
What’s wrong?

20. from os import environ
available_attr_num = len(dir(environ))
20

21. 21
How to be an python expert? James Powell

22. 22

23. 23

24. Hiring Bar
(X) Be familiar with XXX
(O) What have you done?
24

25. XXX in Giant Company
-> Specific library/framework aren’t required
25

26. Biome in Giant Company
-> Internal infrastructure
-> start from ZERO every projects
-> Internal development environment
-> XXX can not be used directly
-> Stack Overflow is not enough
26
>> amazon-sde-process <<

27. The wrong road I have traveled
• focused too much on Job description
• considered XXX library/framework important
• read too many python tricks
• read too many interview feedbacks
27

28. The reason why I’m here
Why did foreign tech companies enter to
Taiwan?
❓ entering local market?
❓ saving cost?
Brain drain in Taiwan
✅ Competitive technicians
❎ Small marketplace
❎ Result-driven investors
❎ SDE-unfriendly industries
28

29. Thank you!
29