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Senior Software Development Engineer in Test, Insomnia - Shanghai

Kong Shanghai, Shanghai, China

onsitefull-time
Posted Dec 17, 2025

Role & seniority: Senior Software Engineer in Test (SDET) at Kong/Insomnia

Stack/tools: JavaScript/TypeScript; Cypress; Playwright; GitHub Actions; CI/CD; k6; automated testing frameworks; test automation harness; Atlassian tools (GitHub/JIRA/Confluence)

Top 3 responsibilities

  • Shape and improve engineering quality across feature teams; participate in design, development, verification, deployment, and production support

  • Increase test coverage and reduce test execution time; design test cases and execute functional, integration, end-to-end, security, and performance tests

  • Build tools for automated, load, and performance testing; contribute to the test automation harness within CI/CD; mentor team members

Must-have skills

  • Functional testing: test strategy, planning, case design, execution, reporting

  • Automation expertise with frontend and backend testing; experience with Cypress or Playwright

  • CI/CD experience (e.g., GitHub Actions); performance engineering/tools (e.g., k6)

  • JavaScript/TypeScript development experience; experience in startup environments; working with distributed teams

Nice-to-haves

  • Experience building/testing frameworks from the ground up

  • Familiarity with security, performance profiling, and load testing

  • Strong collaboration with stakeholders and non-technical staff

Location & work type

  • Location: Not specified

  • Work type: Not specified

Full Description

Are you ready to power the World's connections? If you don’t think you meet all of the criteria below but are still interested in the job, please apply. Nobody checks every box - we’re looking for candidates that are particularly strong in a few areas, and have some interest and capabilities in others.

About Insomnia in Kong

  • Kong creates software and managed services that connect APIs and microservices natively across and within clouds, Kubernetes, data centers, and more using intelligent automation.
  • Insomnia, acquired in 2019, is a full-lifecycle API development platform that has quickly become an integral part of Kong’s product portfolio.
  • Built for developers, Insomnia enables collaborative API design, debugging, mocking, and testing with the most popular API protocols (REST, GraphQL, gRPC, SOAP, SSE, and Websockets). As an open-source platform with 30K+ stars on GitHub, Insomnia has received rave reviews in the community thanks to its intuitive UI, snappy performance, and diverse plugin ecosystem.
  • The Insomnia team is on a mission to make API innovation frictionless. We know that APIs never rest, but that shouldn’t keep you up at night. With an emerging enterprise business and more than 500,000 users leveraging Insomnia at the world’s most innovative companies, we’d love for you to join us on this journey to build the API workflows that users have always dreamed of.

Follow Insomnia updates at @GetInsomnia on Twitter. Check out the repo here: https://github.com/Kong/insomnia. Read more about Kong: http://konghq.com

About the role

  • The Senior Software Engineer in Test is an integral part of the scrum team, participating in all sprint activities and contributing to the overall quality of the finished feature by being involved from the earliest stages of design and development through verification, deployment, and production support.

What you'll do

  • Help build an engineering culture that enables quality in all software feature development teams across the company.
  • Develop and execute plans for continuously increasing coverage and decreasing test execution time.
  • Make frequent contributions to our test automation harness as part of the continuous integration pipeline.
  • Design test cases and execute various tests, including functional, integration, end-to-end, security, and performance testing.
  • Build tools to support automated testing, load testing, and performance testing of our products
  • Interact and participate in meetings with key stakeholders, team members, and internal users regarding timelines, and technical issues.
  • Mentor and guide other Quality Engineering team members and technical and non-technical staff members.

What you'll bring

  • Functional testing experience, including defining test strategy, test planning, test case design, execution, and reporting.
  • Expertise with automated testing tools and strategies.
  • Understanding of web application structure and potential "soft spots".
  • Recent exposure to a startup environment building and contributing to a test framework, including automation, from the ground up.
  • Have a solid understanding of various test frameworks and automation of frontend and backend systems.
  • Experience with Continuous Integration/Delivery concepts and tools, such as GitHub Actions.
  • Experience with performance engineering and profiling and tools such as k6.
  • Working experience with JavaScript/TypeScript
  • Working experience with one or more test automation tools and frameworks such as Cypress and Playwright.
  • Experience working with globally distributed teams.
  • Demonstrated skills using code repositories and Atlassian tools (GitHub, JIRA, Confluence, or similar tools).
  • #LI-WL1

About Kong

  • Kong Inc., a leading developer of cloud API technologies, is on a mission to enable companies around the world to become “API-first” and securely accelerate AI adoption. Kong helps organizations globally — from startups to Fortune 500 enterprises — unleash developer productivity, build securely, and accelerate time to market. For more information about Kong, please visit www.konghq.com or follow us on X @thekonginc.
Functional TestingTest StrategyTest PlanningTest Case DesignTest AutomationWeb Application StructureStartup EnvironmentTest FrameworksContinuous IntegrationPerformance EngineeringJavaScriptTypeScriptCypressPlaywrightCode RepositoriesAtlassian Toolsmulti-locationreview:company

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