hello

Hello!

I’m Mustafa Gunaydin

Software Developer In Test

About Me

I am passionate about Software Testing. In my education and business life, I have always been open to self-development and learning new information. I am a reliable person who fulfills his duties on time and in the most accurate way.

Birthdate:
01/04/1998
Address:
Istanbul, Turkey
Languages:
English - Upper Intermediate
Deutsch - Elementary

Education

Kocaeli University
Electrical Engineering
2016 - 2020

Kanuni Anatolian High School
2012 - 2016

Experience


Trendyol
Software Developer In Test
Jan 2024 - Present
  • Strong QA expertise for ML-powered API services, ensuring reliable and high-performing systems
  • End-to-end testing proficiency across integration, functional, and performance layers
  • CI/CD optimization skills, including pipeline restructuring and parallel execution to accelerate delivery
  • Strategic improvements to deployment and infrastructure for better scalability and maintainability
  • Focus on continuous quality via QA roadmaps, maturity models, and clear documentation
  • Ability to build custom tools for evaluating ML models using key business metrics

    • Insider
    Software Test Engineer
    December 2022 - Jan 2024
  • Conducted manual and automated testing of web and mobile applications
  • Developed and executed test plans, test cases, and test scripts
  • Identified, documented, and tracked software defects using bug tracking tools
  • Collaborated with developers, product managers, and designers to ensure high-quality software delivery
  • Contributed to process improvement initiatives and use tools like AWS, Jenkins, Grafana


    • Trendyol
    Associate Software Developer In Test
    June 2022 - August 2022
  • Writing & Running Automation Tests in isolated platform
  • BDD API Acceptance Testing with Java Rest-Assured
  • Maintain existing tests, monitor failures and report bugs
  • Understanding of CI/CD, STLC, Docker, Kubernetes


    • Borusan CAT @via TesterYou
    Software Test Engineer
    February 2022 - March 2022
  • Understanding Agile processes and keeping in touch all the time with Scrum team
  • Test Case Preparing and writing with Azure and maintenance of existing test cases
  • API testing with Postman


    • Koç Digital @via TesterYou
    Software Test Engineer
    April 2022 - June 2022
  • Find and report bugs with focus on technical and supporting details

    • Skills

    Languages

    ● Java

    ● Python

    ● Go

    ● C#

    ● JavaScript

    ● SQL

    ● CSS

    Technologies

    ● Selenium       ● REST           ● Jenkins
    ● Cucumber     ● Appium      ● Postman
    ● TestNG          ● Specflow    ● Spring
    ● JUnit              ● Behave       ● JMeter
    ● NUnit             ● Karate        ● Playwright

    Projects

    REST Assured API Tests

    API Tests in Github and Medium (2021)

    libraries REST Assured, TestNG

    Github
  • Get User Information
  • Get Repositories
  • Get Repository
  • Get Readme File
  • Post Repository
  • Delete Repository

    • Medium
  • Get User Information
  • Get Publications
  • Create a post

    • Web UI Test with Java

    Testinium Case Study (2021)

    libraries Selenium, Cucumber, JUnit, Log4j

    Web Testing
  • verify the account, favorites and basket section

  • search and verify the search page

  • randomly select a product

  • verify the product price

  • add product the basket and increase the quantity

  • remove product and verify the basket is empty

    • Web UI Test with C#

    .NET & SpecFlow (2021)

    libraries .NET, SpecFlow, NUnit, Selenium


    Web Testing
  • verify the basket is empty
  • verify the product price

    • Web UI Test with Python

    Behave, Selenium (2021)

    libraries Behave, Selenium

    Web Testing
  • verify login
  • verify empty basket

    • Web & API Tests

    Kloia Bootcamp Homework (2021)

    libraries Selenium, Cucumber, JUnit, Gherkin, Karate, API

    Web Testing
  • verify search result
  • verify successful login
  • verify saved item

    • API Testing
  • verify given status
  • generate emails
  • set and post user json file
  • modify and post user json file

    • Web & API Tests

    Kloia Bootcamp Kata Tasks (2021)

    libraries Selenium, Cucumber, JUnit, Gherkin, Karate, API
    We completed the tasks within the given time

    Web Testing
  • logo verification
  • sign in page verification
  • verify credit card application page

    • API Testing
  • get request to pet endpoint
  • path params and matchers
  • post request with json defined in feature
  • post request from table
  • call post feature

    • Android UI Test with Appium

    Java,Appium (2021)

    libraries Appium, Selenium, Cucumber, JUnit, TestNG

    Web Testing
  • verify login
  • verify product on favorites

    • Patika Projects

    Patika.dev (2021)
    Courses
  • Object-Oriented Programming
  • Java 101
  • Java 102
  • SQL
  • Data Structures & Algorithms

    • Courses

    QA Global Summit 2025

    Geekle.us (2025)
    software test

    ISTQB® Foundation Level

    Turkish Testing Board (2025)
    software test

    GitHub Actions for Testing

    Test Automation University (2023)
    object-oriented

    Continuous Integration with Jenkins

    Test Automation University (2023)
    object-oriented

    Cloud Computing with Amazon Web Services (AWS)

    BTK Academy (2023)
    object-oriented

    Software Test Bootcamp

    TesterYou (2022)
    defect

    Izmir Java Bootcamp

    Kodluyoruz (2021)
    java

    ● Object-Oriented Programming

    ● Collections

    ● Stream API

    ● SOLID principles

    ● Spring framework

    ● Spring Boot

    ● What is an API and API Design practices

    ● Building a RESTFUL web service

    ● Spring data JPA

    ● Unit testing

    ● Consuming a RESTFUL web service

    ● Microservice pattern

    and more..

    QA Engineer Bootcamp

    Kloia (2021)
    software test

    ● Introduction to test automation

    ● Web Element inspection

    ● Introduction to Selenium Fundamentals

    ● Simple Selenium tests

    ● Page Object Model (POM) implementation

    ● Introduction to BDD

    ● Test development with Cucumber-Selenium

    ● Introduction to API testing

    ● Karate Framework fundamentals

    ● Simple CRUD requests

    ● External Data files

    ● Test development with Karate Framework

    and more..

    API & API Tests

    BTK Academy (2021)
    api

    Java Spring Bootcamp

    PayCore Patika (2021)
    spring

    Jira Fundamentals Badge

    Atlassian (2021)
    jira

    Programming Essentials In Python

    Cisco & UNX (2020)
    python

    Java Object-Oriented Programming

    Elginkan (2019)
    object-oriented