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Nikoletta Tontou

@nikolettatontou

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Senior QA Engineer focused on test automation and security-aware QA.

Germany

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What I'm looking for

I seek a security-minded QA role emphasizing automation (Cypress/Playwright), API testing, collaborative Agile teams, mentorship opportunities, and continuous learning to deliver resilient, high-quality software.

I am a Senior QA Engineer with 5+ years of hands-on experience in manual and automated testing for web and API applications, backed by an integrated BSc/MSc in Electrical & Computer Engineering. I specialize in Cypress and Playwright automation, Postman API testing, SQL validation, and improving regression coverage while integrating security-driven QA practices.

Recently certified in CompTIA Security+ and a graduate of a cybersecurity bootcamp, I bring penetration testing, digital forensics, and security awareness into QA workflows. I have led QA process improvements, mentored junior testers, and delivered measurable results—like increasing regression coverage by 30% and reducing testing time by one-third—while thriving in Agile and CI/CD environments.

Experience

Work history, roles, and key accomplishments

Current

Senior QA Engineer

Current

Freelancing

Jan 2025 - Present (1 year 5 months)

Provided manual and automated QA for web applications using Cypress and Playwright, executing end-to-end, UI/UX and regression tests to ensure high-quality releases after a career break.

Cypress Playwright End To End Testing Regression Testing Test Automation Bug Reporting CI CD

QA Test Analyst

Instafreight GmbH

Jan 2020 - Dec 2024 (4 years 11 months)

Implemented and scaled Cypress automated tests, increasing regression coverage by 30% and reducing testing time by one-third while leading QA process improvements and mentoring new analysts.

Cypress Postman SQL Regression Testing Test Automation Agile Scrum CI CD Jira

Software QA Tester

Freelancing

Jan 2019 - Dec 2020 (1 year 11 months)

Performed manual and automated website testing including functionality, compatibility, UAT and end-to-end tests, documenting defects and guiding remediation with actionable reports.

Manual Testing Automated Testing UAT Bug Reporting

IT Support Specialist

Technical University of Crete

Jan 2014 - Dec 2016 (2 years 11 months)

Managed 150+ workstations, performed OS installations and maintenance, configured Active Directory policies, and delivered first-level help desk support to improve departmental operations.

Active Directory Windows Ubuntu Acronis Troubleshooting Help Desk Support Technical Documentation

Education

Degrees, certifications, and relevant coursework

CompTIA

CompTIA Security+, Cybersecurity

Earned the CompTIA Security+ certification demonstrating foundational knowledge in cybersecurity principles and practices.

Ironhack

Bootcamp Certificate, Cybersecurity

Completed an intensive Cybersecurity Bootcamp covering ethical hacking, penetration testing, digital forensics, and security-aware QA practices.

Technical University of Crete

Integrated Master (BSc & MSc), Electrical and Computer Engineering

Integrated Master (BSc & MSc) in Electrical and Computer Engineering with a thesis on hyperspectral imaging for skin chromophore mapping using MATLAB.