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I am a Senior QA Engineer with 7+ years of experience in manual and functional testing of complex web-based and distributed applications in production-critical environments. I have a strong background in test plan design, regression and integration testing, SQL validation, and defect tracking using Jira and HP ALM. I thrive on collaboration with developers and product managers to ensure quality across the software development lifecycle and enjoy identifying issues early to provide actionable feedback. I excel in delivering reliable releases under pressure, contributing to CI/CD sprints, and supporting 5G service rollouts and lab automation. I am committed to continuous learning and applying best practices to improve product quality and delivery timelines.…I am a Senior QA Engineer with 7+ years of experience in manual and functional testing of complex web-based and distributed applications in production-critical environments. I have a strong background in test plan design, regression and integration testing, SQL validation, and defect tracking using Jira and HP ALM. I thrive on collaboration with developers and product managers to ensure quality across the software development lifecycle and enjoy identifying issues early to provide actionable feedback. I excel in delivering reliable releases under pressure, contributing to CI/CD sprints, and supporting 5G service rollouts and lab automation. I am committed to continuous learning and applying best practices to improve product quality and delivery timelines.

Tatjana Stojanovic

QA Engineer, AI Engineer, Data Scientist, +2

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I am a Senior QA Engineer with 7+ years of experience in manual and functional testing of complex web-based and distributed applications in production-critical environments. I have a strong background in test plan design, regression and integration testing, SQL validation, and defect tracking using Jira and HP ALM. I thrive on collaboration with developers and product managers to ensure quality across the software development lifecycle and enjoy identifying issues early to provide actionable feedback. I excel in delivering reliable releases under pressure, contributing to CI/CD sprints, and supporting 5G service rollouts and lab automation. I am committed to continuous learning and applying best practices to improve product quality and delivery timelines.…I am a Senior QA Engineer with 7+ years of experience in manual and functional testing of complex web-based and distributed applications in production-critical environments. I have a strong background in test plan design, regression and integration testing, SQL validation, and defect tracking using Jira and HP ALM. I thrive on collaboration with developers and product managers to ensure quality across the software development lifecycle and enjoy identifying issues early to provide actionable feedback. I excel in delivering reliable releases under pressure, contributing to CI/CD sprints, and supporting 5G service rollouts and lab automation. I am committed to continuous learning and applying best practices to improve product quality and delivery timelines.

Available to hire

I am a Senior QA Engineer with 7+ years of experience in manual and functional testing of complex web-based and distributed applications in production-critical environments. I have a strong background in test plan design, regression and integration testing, SQL validation, and defect tracking using Jira and HP ALM. I thrive on collaboration with developers and product managers to ensure quality across the software development lifecycle and enjoy identifying issues early to provide actionable feedback.

I excel in delivering reliable releases under pressure, contributing to CI/CD sprints, and supporting 5G service rollouts and lab automation. I am committed to continuous learning and applying best practices to improve product quality and delivery timelines.

Skills

Experience Level

Expert

Expert

Expert

Intermediate

Language

English

Advanced

German

Advanced

Serbian

Fluent

Work Experience

Senior QA Engineer at Sunrise Communications AG

September 1, 2018 - Present

Validated complex distributed systems in pre-production environments, including device-cloud integrations and service provisioning workflows; performed acceptance and regression testing of routers, ONTs, Wi-Fi mesh systems, and 5G CPEs; validated TR-069/ACS device provisioning and lifecycle; end-to-end validation of Internet, Wi-Fi, VoIP, IPTV, and FAX services; tested CPE devices from Huawei, Sagemcom, AVM, Zyxel, Nokia, Oppo across iOS, Android, tvOS, Samsung TV; validated Sunrise Connect mobile app and UPC HFC modem services; API and service validation using Postman; root cause analysis via log correlation and Wireshark; defect tracking and release validation in Jira, Octane, HP ALM, Bugzilla; contributed to CI/CD Agile sprints with test result logging and Go/No-Go readiness; supported 5G services rollout and lab automation; part of Go/No-Go decisions including first 5G modem launches in Europe; contributed to ~70% reduction in production incidents through structured validation.

Founder & Operations Lead at Bgstyle Zürich

January 1, 2001 - December 31, 2017

Operated independent consulting practice with focus on client service, quality standards, and documentation ISO 9000.

Quality Manager / Lab Dip Engineer at CIS Institute

January 1, 1996 - December 31, 2001

Implemented internal quality controls, compliance audits, and regulatory documentation.