Gehan Mallikarachchi, Developer in Auckland, New Zealand
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Gehan Mallikarachchi

Verified Expert  in Engineering

Manual QA Engineer and Developer

Auckland, New Zealand
Toptal Member Since
September 9, 2022

Gehan has more than ten years of experience testing web applications in the Agile framework. He has detailed knowledge of manual QA processes, preparations of test plans, and executions of tests with various testing types. Gehan always captures issues promptly with detailed bug reports and clear traceability to the test cases and business requirements.


CAKE Engineering
Java, REST APIs, Appium, Apache JMeter, Jira, Bitbucket, Git, Apache Maven...
Sysco LABS Sri Lanka
Agile, Java, Apache JMeter, REST Assured, Selenium, Jenkins, Git, Apache Maven...
Java, Selenium, REST APIs, REST Assured, Postman, Confluence, Jira, Scrum...




Preferred Environment

Slack, Jira, Zephyr

The most amazing...

...thing I've created is a test plan document by identifying test scenarios and cases.

Work Experience

Associate Technical and Quality Lead

2019 - PRESENT
CAKE Engineering
  • Developed a UI automation framework from scratch for an online ordering system using Selenium with Java and the page object model (POM) design pattern with Page Factory. Created and maintained test data separately in Excel sheets.
  • Created a mobile automation framework using Appium for an iOS application, Appium Inspector for locating elements, and an Appium server and simulator for executing tests. Created and maintained test data separately in a property file.
  • Used JMeter for performance testing, monitored the memory and CPU utilization in AWS CloudWatch, and changed the thread count, number of integrations, and ramp-up time. Used assertions and listeners to compare the outcomes.
  • Created a back-end automation framework using REST Assured. Used the RequestUtil class to write request methods and TestNG for prioritized tests. Retried failed tests and took screenshots when the test failed. Used ExtentReports for reporting.
Technologies: Java, REST APIs, Appium, Apache JMeter, Jira, Bitbucket, Git, Apache Maven, REST Assured, Selenium WebDriver, Amazon Elastic Container Service (Amazon ECS), Mobile Device QA Automation, Test Case Creation, Test Case Execution, QA Test Plan Management, TestNG, XPath, Agile, Scrum Master, Jenkins, Quality Assurance (QA), Manual Testing, Integration Testing

Senior Quality Assurance Engineer

2019 - 2021
Sysco LABS Sri Lanka
  • Used Postman to manually perform testing of API endpoints.
  • Created test plans and test strategy documents for new features.
  • Identified test scenarios and wrote test cases in Jira.
  • Used Git for version control and Bitbucket for repository management.
Technologies: Agile, Java, Apache JMeter, REST Assured, Selenium, Jenkins, Git, Apache Maven, Jira, Bitbucket

Senior Software Quality Analyst

2017 - 2019
  • Completed user acceptance testing and production sign-offs.
  • Conducted smoke and regression testing and ran BVT and regression suites using Jenkins.
  • Executed test cases manually and reported bugs in Jira.
  • Conducted browser resolution testing with different resolutions supported on mobile, iPad, and desktops.
  • Performed front-end automation testing using Selenium with Java and back-end automation testing with REST Assured.
Technologies: Java, Selenium, REST APIs, REST Assured, Postman, Confluence, Jira, Scrum, Agile, Jenkins, HP Application Lifecycle Management (ALM), TestNG

Associate Software Quality Assurance Engineer

2013 - 2015
thinkCube Systems
  • Identified test scenarios, created test cases, and executed them.
  • Created front-end automation scripts using Selenium with Java.
  • Reported bugs and performed verification in Jira based on priority and severity.
Technologies: Test Cases, Bug Analysis & Reporting

Associate Software Engineer

2011 - 2013
  • Used Quality Center as a test management tool to define test plans and defect management.
  • Created many test cases in TestLink and executed them.
  • Conducted performance testing using JMeter and reported each endpoint's memory and CPU usage.
Technologies: HP Quality Center (QC), Apache JMeter, TestLink, APIs

Testing of Online Ordering Application

I created test plan documents, identified test scenarios and cases, and reported bugs in Jira for an online ordering application (OLO) used by restaurants in the U.S. The app is owned by Mad Mobile Inc.

E-learning System

Tested online e-learning system with gratings. ERP systems and eCommerce systems tested. I created test plans, identified test scenarios, and executed test cases. Also, I reported bugs and assigned to developers and later verified them.

Test Plan, Test Cases in Jira

I have worked in various domains, such as personal education applications, Sysco POS restaurant food ordering applications, and healthcare industry applications. I have been involved in creating test plans, creating test cases and executing test cases, reporting bugs, and verifying them. Manually verified the records in databases by writing simple queries to validate data in tables.
2015 - 2017

Master's Degree in Information Technology

University of Moratuwa - Moratuwa, Sri Lanka

2007 - 2011

Bachelor's Degree in Information Systems

Sri Lanka Institute of Information Technology - Malabe, Sri Lanka


ISTQB Test Automation Engineer - Advanced Level

International Software Testing Qualification Board


ISTQB Foundation Level

International Software Testing Qualifications Board



Charted Institute of Management Accountants (CIMA)


REST APIs, Selenium WebDriver


Jira, Git, Jenkins, Bitbucket, REST Assured, Postman, Confluence, Zephyr, Slack, Apache JMeter, Amazon Elastic Container Service (Amazon ECS), Apache Maven, HP Application Lifecycle Management (ALM), HP Quality Center (QC), iOS Simulator


Selenium, TestNG, Appium


Manual Testing, Testing, Agile, Scrum, Page Object Model (POM), Test Automation


XPath, Java, Gherkin, SQL


Database Testing


TestLink, iOS


QA Testing, Software QA, Test Case Creation, Test Case Execution, QA Test Plan Management, Scrum Master, Bug Analysis & Reporting, Quality Assurance (QA), Test Cases, Integration Testing, Manual QA, eCommerce UX, RESTful Web Services, APIs, UML Diagrams, Mobile Device QA Automation, Selenium PageFactory, Cost Accounting, Taxation, Financials, Test Planning, Reporting

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