Open to opportunities

George User

@georgeuser11

I’m a System QA Engineer specializing in Linux distributed backend testing, incident investigation, and root-cause analysis.

Russian Federation

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What I'm looking for

I’m looking for a System QA/QA role where I can own Linux-based system and backend testing, lead production incident investigation with strong RCA, and grow REST API automation using Python, Playwright, and Kubernetes.

I’m a System QA Engineer with 4+ years of experience testing Linux-based distributed, high-load backend systems. I focus on system, integration, functional, and regression testing, especially where reliability depends on correct interactions between services.

At OOO Citadel, I investigate production incidents impacting subscriber identification and traffic processing, then reconstruct requirements from technical documentation, logs, runtime behavior, and operational evidence. I validate interactions between backend services, decoders, and dependent components, and I use Linux troubleshooting and log analysis to drive defect investigation and feature validation with development, support, and operations.

I’ve delivered impact through deep system understanding—reconstructing and testing a high-load subscriber accounting processor correlating data with more than one million traffic flows per second, and identifying undocumented dependencies and integration failures via logs and runtime analysis. Earlier, at MFI Soft, I tested traffic capture, classification, and filtering services on a four-server cluster processing 60–500 Gbps, and resolved five production incidents through targeted acceptance testing and gap identification.

My working style is evidence-first: I collect technical facts, perform root cause analysis, and improve test coverage by turning partial knowledge into validated system expectations. I’m also expanding into REST API testing and automation with Python, Playwright, and Kubernetes to keep quality strong across both system and API layers.

Experience

Work history, roles, and key accomplishments

Current

QA Engineer (System Testing)

Current

OOO Citadel

Jan 2024 - Present (2 years 6 months)

Performs system, integration, functional, and regression testing for Linux-based distributed telecommunications systems. Investigates production incidents and validates backend service interactions using logs, documentation, and runtime evidence.

QA engineer

MFI Soft

May 2022 - Jan 2024 (1 year 8 months)

Conducts functional, system, and regression testing for Linux-based telecommunications applications. Designs and executes tests for feature and configuration changes and investigates production issues reported by customers and support teams.

Junior Technical Support Engineer

MFI Soft

Dec 2021 - May 2022 (5 months)

• Technical support and troubleshooting of Linux-based telecommunications systems.
• Analysis of network traffic, logs and subscriber-related production issues.
• Collection of technical evidence and collaboration with development teams during root cause analysis.

CentOS Confluence HTTP Log Analysis Red Hat Enterprise Linux Linux TCP IP Production Support BASH Manual Testing Distributed Systems SQL Troubleshooting

Senior Researcher

Kstovo Museum of Local History

Mar 2019 - Oct 2020 (1 year 7 months)

Worked as a senior researcher at a local history museum. Responsibilities were not specified in the provided experience details.

Chief Specialist

Ministry of Education of Nizhny Novgorod Region

Feb 2019 - Mar 2019 (1 month)

Held a Chief Specialist role in the Nizhny Novgorod region education ministry. Responsibilities were not specified in the provided experience details.

Methodologist

Nizhny Novgorod College of Small Business

Dec 2018 - Feb 2019 (2 months)

Served as a methodologist at the Nizhny Novgorod College of Small Business. Responsibilities were not specified in the provided experience details.

Civil Defense Engineer

Federal Radio Frequency Center

Sep 2013 - Jan 2017 (3 years 4 months)

Worked as a Civil Defense Engineer at the Federal Radio Frequency Center. Responsibilities were not specified in the provided experience details.

Lecturer / Senior Lecturer

Various Universities and Training Centers

Sep 2006 - Aug 2013 (6 years 11 months)

Lectured as a lecturer/senior lecturer across various universities and training centers. Responsibilities were not specified in the provided experience details.