Hello, I'm
Deniz Hamamcioglu
QA Architect & Automation Lead
Over 12 years of experience delivering enterprise-grade test automation solutions for global clients across multiple industries and continents.
Trusted By
Companies and organizations I've worked with
What I Do
Specialized QA services tailored to your needs
Test Architecture Design
Designing scalable, maintainable test architectures from scratch — covering web, mobile, API, and performance testing with modular frameworks.
Automation Framework Development
Building custom turn-key automation solutions using Selenium, Playwright, Cypress, Appium, WebDriverIO, and other cutting-edge tools.
Team Leadership & Mentoring
Leading QA teams, defining best practices, establishing code review processes, and mentoring engineers to elevate quality standards.
CI/CD & DevOps Integration
Designing CI/CD pipelines for automated test execution, integrating with GitHub Actions, GitLab CI, Jenkins, and Docker environments.
Facts & Stats
A few numbers that tell my story
Years of Experience
Clients Worldwide
Countries Served
Projects Delivered
Industries
Diverse sectors where I've delivered quality
E-Commerce & Retail
Large-scale e-commerce platforms serving millions of daily users across multiple brands and regions.
Google Shopping, Deckers Brands
Travel & Hospitality
Travel booking systems and search platforms powering global travel experiences.
Amadeus, Google Travel
Finance & Fintech
Financial institutions, brokers, and fintech platforms requiring rigorous security and compliance testing.
Mesh
Healthcare & MedTech
Medical devices and health applications demanding the highest quality standards and regulatory compliance.
Actegy / Revitive
Defense & Aerospace
Mission-critical defense projects requiring comprehensive E2E, regression, and performance testing.
Havelsan, BITES
International Organizations
Global organizations requiring robust data validation, load testing, and automated quality assurance.
United Nations
Technology & SaaS
HR platforms, social networks, and enterprise SaaS products with complex testing requirements.
Personio, Haiilo, FriendFinder Networks
Education & Credentials
Credential evaluation and educational platforms requiring thorough quality assurance.
FCSA
Projects
Selected highlights from my portfolio
Google Search — Shopping & Travel
Built an end-to-end test automation framework from scratch for web and mobile testing. Led a team of six engineers to automate Google Search for the shopping domain and developed tests for Google Travel.
LLM Validation Framework
Developed a test and monitoring framework for LLM validation using deepeval, coupled with custom logprob and entropy calculations to flag model uncertainty.
E-Commerce Multi-Brand QA
Enhanced testing processes for 5 brands across 4 regions, serving tens of millions of users daily. Managed a team of 7 QA engineers and improved automation framework stability.
Financial API Automation
Architected end-to-end test automation for all API endpoints integrated with major financial institutions, including captcha solving and complex authentication flows.
Medical Device Testing
Architected the entire test automation flow for a medical device and native mobile app on iOS and Android. Built a custom device farm and achieved 85%+ automation coverage.
UN Data Validation
Enhanced Playwright-based automated tests and developed data validation tests using CosmosDB for the United Nations.
HR Platform Automation
Developed a comprehensive test automation framework using Java and Selenide, utilized by developers and QA in CI/CD pipelines. Created the company-wide automation roadmap.
Load Testing Suite
Designed and executed comprehensive load tests using JMeter across multiple projects to evaluate system performance under various conditions.
Technologies
Tools and frameworks I work with
Test Frameworks
Languages
CI/CD
Tools & Platforms
Get in Touch
Have a project in mind? Let's talk.
Location
Ankara, Turkey
Availability
Remote — Worldwide