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I'm Guo Cuijian, a QA professional with strong bug-hunt skills and a track record of delivering high-quality software. I excel in manual and automated testing across web, SaaS, e-commerce, and mobile apps, and I enjoy building robust test frameworks and CI/CD pipelines. I'm familiar with AI/ML testing, LLM validation, and RAG workflows, and I bring hands-on experience with Java, Python, and JavaScript, Docker, and databases like MySQL and PostgreSQL. I also lead test teams and manage testing projects to ensure timely, effective quality assurance.…I'm Guo Cuijian, a QA professional with strong bug-hunt skills and a track record of delivering high-quality software. I excel in manual and automated testing across web, SaaS, e-commerce, and mobile apps, and I enjoy building robust test frameworks and CI/CD pipelines. I'm familiar with AI/ML testing, LLM validation, and RAG workflows, and I bring hands-on experience with Java, Python, and JavaScript, Docker, and databases like MySQL and PostgreSQL. I also lead test teams and manage testing projects to ensure timely, effective quality assurance.

Guo Cuijian

QA Engineer, Developer, Front-End Developer, +2

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I'm Guo Cuijian, a QA professional with strong bug-hunt skills and a track record of delivering high-quality software. I excel in manual and automated testing across web, SaaS, e-commerce, and mobile apps, and I enjoy building robust test frameworks and CI/CD pipelines. I'm familiar with AI/ML testing, LLM validation, and RAG workflows, and I bring hands-on experience with Java, Python, and JavaScript, Docker, and databases like MySQL and PostgreSQL. I also lead test teams and manage testing projects to ensure timely, effective quality assurance.…I'm Guo Cuijian, a QA professional with strong bug-hunt skills and a track record of delivering high-quality software. I excel in manual and automated testing across web, SaaS, e-commerce, and mobile apps, and I enjoy building robust test frameworks and CI/CD pipelines. I'm familiar with AI/ML testing, LLM validation, and RAG workflows, and I bring hands-on experience with Java, Python, and JavaScript, Docker, and databases like MySQL and PostgreSQL. I also lead test teams and manage testing projects to ensure timely, effective quality assurance.

Available to hire

I’m Guo Cuijian, a QA professional with strong bug-hunt skills and a track record of delivering high-quality software. I excel in manual and automated testing across web, SaaS, e-commerce, and mobile apps, and I enjoy building robust test frameworks and CI/CD pipelines.

I’m familiar with AI/ML testing, LLM validation, and RAG workflows, and I bring hands-on experience with Java, Python, and JavaScript, Docker, and databases like MySQL and PostgreSQL. I also lead test teams and manage testing projects to ensure timely, effective quality assurance.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Intermediate

Work Experience

QA Team Leader at OpenText

March 1, 2020 - July 1, 2025

Tested mobile applications on Android and iOS in native mode; tested web applications for front-end and back-end functionalities; tested the AI application throughout its life cycle (Python + RAG + Prompt Template); tested websites performance.

Senior Quality Engineer at Coupang

February 1, 2017 - February 1, 2020

Built web automation test framework (Protractor + Java + Selenium); built automation infrastructure using pipelines and Docker to run automated tests; tested website functionality and performance.

QA Expert at HPE

October 1, 2011 - February 1, 2017

Performed functional, integration, exploratory, and white-box testing; reproduced software issues in production and assisted the development team in solutions; planned testing strategies and managed outsourced personnel.

Senior SDET at Shanghai WICRESOFT Company Limited

August 1, 2010 - October 1, 2011

Tested web site features; tested SQL Server stored procedure logic.

Product Manager at Shanghai CHENRUI Information Technical Company

March 1, 2009 - June 1, 2010

Conducted user research and translated user needs into product design; managed development progress to ensure timely project delivery; collaborated with pre-sales to provide product solutions.

SDET at BEYONDSOFT (Shanghai) Co., Ltd

August 1, 2007 - March 1, 2009

Executed manual test cases; maintained automation test cases written in C#; outsourced testing activities.

Software Engineer at Shanghai LIANGJIANG Communications System Limited by Share Ltd

November 1, 2005 - August 1, 2007

Used VC++ to develop graphic software; used C++ Builder to develop desktop software (C/S architecture).

Software Engineer at Hangzhou ZHONGLI Computer Co., Ltd.

November 1, 2004 - November 1, 2005

Outsourced to Huawei to develop telecommunication software using Delphi; used VC++ to develop desktop applications.