Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I am a results-oriented QA engineer and software engineer with extensive experience across manual and automated testing for web, mobile, backend, and fintech systems. I have built maintainable test automation frameworks using Java, Python, and TypeScript and worked in Agile and DevOps environments. I enjoy identifying high-value test scenarios and stabilising regression suites to deliver reliable releases. I collaborate closely with developers and product stakeholders to clarify requirements, retire invalid defects, and ensure testing aligns with business risk and user value. I am ISTQB Foundation certified and comfortable with API testing, CI/CD integration, and cross-team knowledge sharing.…I am a results-oriented QA engineer and software engineer with extensive experience across manual and automated testing for web, mobile, backend, and fintech systems. I have built maintainable test automation frameworks using Java, Python, and TypeScript and worked in Agile and DevOps environments. I enjoy identifying high-value test scenarios and stabilising regression suites to deliver reliable releases. I collaborate closely with developers and product stakeholders to clarify requirements, retire invalid defects, and ensure testing aligns with business risk and user value. I am ISTQB Foundation certified and comfortable with API testing, CI/CD integration, and cross-team knowledge sharing.

Radoslav Stamenov

QA Engineer, Web Developer, Back-End Developer, +1





I am a results-oriented QA engineer and software engineer with extensive experience across manual and automated testing for web, mobile, backend, and fintech systems. I have built maintainable test automation frameworks using Java, Python, and TypeScript and worked in Agile and DevOps environments. I enjoy identifying high-value test scenarios and stabilising regression suites to deliver reliable releases. I collaborate closely with developers and product stakeholders to clarify requirements, retire invalid defects, and ensure testing aligns with business risk and user value. I am ISTQB Foundation certified and comfortable with API testing, CI/CD integration, and cross-team knowledge sharing.…I am a results-oriented QA engineer and software engineer with extensive experience across manual and automated testing for web, mobile, backend, and fintech systems. I have built maintainable test automation frameworks using Java, Python, and TypeScript and worked in Agile and DevOps environments. I enjoy identifying high-value test scenarios and stabilising regression suites to deliver reliable releases. I collaborate closely with developers and product stakeholders to clarify requirements, retire invalid defects, and ensure testing aligns with business risk and user value. I am ISTQB Foundation certified and comfortable with API testing, CI/CD integration, and cross-team knowledge sharing.

Available to hire

I am a results-oriented QA engineer and software engineer with extensive experience across manual and automated testing for web, mobile, backend, and fintech systems. I have built maintainable test automation frameworks using Java, Python, and TypeScript and worked in Agile and DevOps environments. I enjoy identifying high-value test scenarios and stabilising regression suites to deliver reliable releases.

I collaborate closely with developers and product stakeholders to clarify requirements, retire invalid defects, and ensure testing aligns with business risk and user value. I am ISTQB Foundation certified and comfortable with API testing, CI/CD integration, and cross-team knowledge sharing.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Senior Quality Assurance Engineer at LemFi

January 1, 2026 - April 30, 2026

Tested fintech products across mobile, backend, gateway, UI, and system-integration layers. Collaborated with backend engineers to support new API endpoints and ledger-simulator integrations, enabling stronger historical-user scenario coverage and clearer UI validation. Improved reliability of API automation tests by investigating flaky failures, strengthening assertions, and supporting faster regression feedback. Worked closely with developers and product stakeholders to clarify requirement deviations, retire invalid defects, and keep testing aligned with business risk and user value. Supported cross-team quality activities through test evidence, exploratory testing, defect analysis, and knowledge sharing across Ledger and Credit workstreams.

Quality Assurance Engineer at TestDevLab (TDL)

September 1, 2023 - December 31, 2025

Led QA efforts across mobile, web, and backend projects with strong automation focus, including payment-related test coverage for a major international client. Developed automated regression suites using WebdriverIO (TypeScript) and Appium for iOS/Android testing. Collaborated with developers to enhance CI/CD pipelines, improving test reliability and reducing release times. Executed exploratory and regression testing using BrowserStack and custom test environments.

Quality Assurance Engineer at Evolution

May 1, 2023 - July 31, 2023

Performed functional, regression, and integration testing for web and mobile platforms. Contributed to the delivery of new game releases and ensured high performance of legacy systems. Documented and reported defects through structured workflows, supporting rapid resolution.

Testing Specialist at Intrum

March 1, 2022 - April 30, 2023

Led integration and functional testing for enterprise financial systems within Agile sprints. Identified complex edge-case scenarios and executed data-driven test cases. Provided mentoring and test strategy guidance for QA team improvement initiatives.

Information Technology Engineer at Tynan Electrical Ltd

June 1, 2019 - December 31, 2021

Managed IT infrastructure, deployment, and monitoring across offices and remote systems. Configured and maintained software environments to ensure smooth operations. Delivered user support and implemented best practices in data security and continuity.

Quality Assurance Engineer at Astra Telematics Ltd

June 1, 2018 - June 30, 2019

Developed and executed test strategies for IoT and telematics systems under Agile workflows. Validated firmware-to-backend communication and device data accuracy. Collaborated with cross-functional teams to enhance test coverage and product stability.

Independent Business Owner at Nevis Corp (Freelance)

January 1, 2009 - January 1, 2018

Founded and managed a logistics and distribution business supporting Amazon 3PL operations. Oversaw hiring, finance, logistics, and daily operations with a focus on process optimization.