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Sevinc Mammadova

@sevincmammadova

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Senior QA Engineer specializing in API and backend testing, test strategy, and automation.

Spain

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What I'm looking for

I’m looking for an Agile role where I can own API/backend QA, build or rebuild test strategy from scratch, and drive release validation and automation—targeting fewer post-release defects and zero critical production incidents.

I’m an ISTQB-certified Senior QA Engineer with 5+ years of experience across web, mobile, and API testing in Agile teams. I’ve repeatedly set up QA processes from scratch, with a focus on functional, regression, and exploratory testing.

Most recently, I built the testing structure for a high-traffic media platform that had none—creating test plans, regression suites, and release sign-off checklists. By putting structured coverage in place, I cut post-release bug reports by up to 35% and helped keep critical user journeys safe from high-severity defects.

Previously, I owned end-to-end QA on a live airline retail platform, reducing post-release defects by 30% in revenue-critical flows and delivering zero critical production incidents across multiple release cycles. I validated APIs and backend data with Postman/Swagger and SQL, and supported cloud migration checks by verifying data integrity end-to-end with no regressions.

I’m also hands-on with automation and team enablement, building Selenium (Java) and Cucumber BDD suites that reduced manual regression work by 25% and scaled to 3x the original test volume. Beyond QA, I’ve worked as a freelance AI trainer/data annotator—reviewing model outputs and feeding structured feedback back into review workflows to support improved quality.

Experience

Work history, roles, and key accomplishments

Current

Senior QA Engineer

Current

Technote

May 2025 - Present (1 year 2 months)

Joined as the first QA on the team and built QA processes from scratch, including test plans, regression suites, and release sign-off checklists. Reduced post-release bug reports by 35% within three months and tested third-party integrations and critical user journeys for web and mobile.

Test Strategy Test Planning Regression Testing Exploratory testing End To End Testing Risk Assessment

Current

Freelance AI Trainer

Current

Freelance

Mar 2021 - Present (5 years 4 months)

Provided AI training and data annotation work, including text-to-text translation and audio-to-text transcription. Reviewed and validated transcripts and model-generated outputs, flagging errors and hallucinations against project guidelines.

General Text Translation Audio Transcription Data Annotation Transcript Review Hallucination Detection

Senior QA Engineer

Retail InMotion

Feb 2022 - Jan 2025 (2 years 11 months)

Owned end-to-end QA for a high-volume airline retail platform where data sync errors impact revenue accuracy and stock integrity. Built a risk-based regression suite, validated backend data via Postman/Swagger/SQL, and developed Selenium (Java) and Cucumber BDD automation to reduce manual regression work by 25%.

Functional Testing Regression Testing API Testing Postman Swagger SQL QA Automation Android Testing IOS Testing Web Testing

QA Tester

uTest

Mar 2020 - Feb 2022 (1 year 11 months)

Performed functional and exploratory testing across a wide range of mobile and web apps for a crowdtesting platform. Wrote clear reproduction steps with logs and screenshots, flagged critical defects and release risks, and retested fixes in new builds.

Functional Testing Exploratory testing Bug Reporting Reproduction Steps Expected Vs Actual Documentation Log and Screenshot Capture