51Testing Tech Stack

Software testing and QA services for enterprise and embedded systems

IT Services and IT Consulting Shanghai 501–1,000 employees Founded 2004 Public Company

51Testing operates a testing-services business structured around functional, performance, and compatibility testing—with active projects spanning HarmonyOS performance validation, embedded systems, and test automation. The hiring profile is heavily junior-skewed (87 of 104 open roles) concentrated in engineering, suggesting a labor-intensive testing operation scaled through entry-level staffing. No movement in tech adoption or replacement signals a stable, established stack focused on proven tools (JMeter, Selenium, LoadRunner, Appium) rather than experimentation.

Tech Stack 21 technologies

Core StackJava Python Linux Selenium Postman SQL C/C++ Windows Ant JMeter HarmonyOS C Bash fio iostat LoadRunner Appium Excel Microsoft Project TestNG FineBI

What 51Testing Is Building

◆Challenges

Testing efficiency improvement
Salary negotiation anxiety
Unstable job
Software development hiring gap
No special skills
Improving test efficiency and coverage
Lack of specialized skills
Job instability
找工作没专项特长
工作不稳定

▲Active Projects

Harmonyos performance testing
Defect management
Harmonyos stability testing
New product testing
Real case projects
Hardware test platform
Embedded system software development
Test automation and continuous integration
Real-world data analysis projects
Dfx testing

Hiring Activity

Minimal100 roles · 0 in 30d

Department

Engineering

73

Data

11

Training

8

Sales

6

Support

4

HR

1

Seniority

Junior

87

Intern

10

Mid

3

Senior

3

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About 51Testing

51Testing is a public software testing and QA services provider headquartered in Shanghai, serving clients globally. The company delivers functional testing, performance testing, compatibility testing, and automated testing across web, mobile, and embedded platforms—including recent work on HarmonyOS stability and performance. With 501–1,000 employees and active hiring concentrated in China, 51Testing operates a services-delivery model where engineering capacity (test automation, defect management, test infrastructure) is the primary operational lever. Current project focus spans hardware test platforms, CI/CD integration, and real-world validation scenarios.

HeadquartersShanghai

Company Size501–1,000 employees

Founded2004

Hiring MarketsChina

Frequently Asked Questions

What testing tools does 51Testing use?

JMeter, Selenium, LoadRunner, Appium, TestNG, and Postman are primary tools. Stack also includes C/C++, Java, Python, SQL for test framework development and performance analysis (fio, iostat).

What is 51Testing working on?

Current projects include HarmonyOS performance and stability testing, embedded system test platforms, test automation and CI/CD integration, defect management, and hardware validation.