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TokyoDev Developer Survey 2023

Technology

Programming Languages

Which programming languages do you regularly use on your job?

JavaScript remained the most popular language. TypeScript usage shot up, from 33% of respondents using it last year, to 42% of respondents this year.

Kotlin developers were the top compensated while PHP developers were the worst compensated.

39.2% of respondents using Java worked at a company of 10,000 or more employees, while 43.5% of respondents using Ruby worked at a company of 20 to 99 employees.

0%
10%
20%
30%
41%
51%
1

JavaScript

303
2

TypeScript

249
3

Python

242
4

HTML/CSS

229
5

SQL

177
6

Bash/Shell

158
7

Java

120
8

Go

86
9

Ruby

76
10

C++

70
0%
10%
20%
30%
41%
51%
% of question respondents
597
84%

Databases

Which databases do you regularly use at your job?

PostgreSQL remained the most popular database.

0%
8%
16%
24%
32%
40%
1

PostgreSQL

225
2

MySQL

204
3

Redis

149
4

MongoDB

86
5

ElasticSearch

70
6

DynamoDB

66
7

SQLite

55
8

MariaDB

33
9

Microsoft SQL Server

19
10

Not Applicable

95
11

Other Answers

48
0%
8%
16%
24%
32%
40%
% of question respondents
558
78%

Web Frameworks

Which web frameworks do you regularly use at your job?

React was the most popular web framework overall, and among front-end developers, 69.1% reported they used it.

Among back-end developers, React was also the most popular web framework with 34.6% of respondents using it. Ruby on Rails was the second most popular framework among backend developers, with 17.3% of them using it.

0%
9%
17%
26%
35%
43%
1

React

232
2

Next.js

98
3

Vue.js

95
4

Rails

70
5

jQuery

51
6

Django

45
7

Express

40
8

FastAPI

38
9

Laravel

34
10

Flask

33
0%
9%
17%
26%
35%
43%
% of question respondents
537
75%

Other Frameworks and Libraries

Which other frameworks and libraries do you regularly use at your job?

86.1% of data scientists reported that they use NumPy

0%
8%
16%
24%
31%
39%
1

NumPy

78
2

Pandas

69
3

Apache Kafka

65
4

Spring

61
5

Torch/PyTorch

48
6

TensorFlow

41
7

OpenCV

36
8

Scikit-learn

36
9

React Native

33
10

.NET

31
0%
8%
16%
24%
31%
39%
% of question respondents
436
61%

Developer Tools

Which developer tools do you regularly use at your job?

Among DevOps specialists, 91.2% of respondents used Docker, 64.5% of them used Kubernetes, and 62.3% of them used Terraform.

0%
14%
27%
41%
55%
69%
1

Docker

390
2

Npm

283
3

Homebrew

231
4

Kubernetes

170
5

Pip

157
6

Yarn

153
7

Terraform

143
8

Make

107
9

Vite

86
10

Ansible

39
0%
14%
27%
41%
55%
69%
% of question respondents
569
80%

Developer Environments

Which developer environments do you regularly use at your job?

Visual Studio Code was respondents' preferred IDE.

0%
15%
29%
44%
58%
73%
1

Visual Studio Code

424
2

IntelliJ IDEA

119
3

Vim

114
4

VS Code

58
5

Xcode

56
6

Neovim

49
7

Android Studio

44
8

PyCharm

44
9

Sublime Text

43
10

IPython/Jupyter

39
0%
15%
29%
44%
58%
73%
% of question respondents
582
82%

Cloud Platforms

Which cloud platforms do you regularly use at your job?

Although we provided respondents with Japanese cloud platforms as options, none of them received a significant number of responses.

0%
15%
30%
45%
61%
76%
1

AWS

372
2

Google Cloud

154
3

Firebase

65
4

Azure

61
5

Cloudflare

46
6

Heroku

26
7

Vercel

26
8

Digital Ocean

15
9

Other Answers

33
0%
15%
30%
45%
61%
76%
% of question respondents
491
69%