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Hi, I’m Roman Stoliar, a Senior QA Engineer with over 9 years of experience specializing in system-level testing, networking, and Linux-based environments. I’ve consistently worked on validating complex distributed systems, firmware, and network-dependent applications across web, mobile, and embedded domains. I excel at diagnosing performance, stability, and connectivity issues using tools like Wireshark, tcpdump, and iPerf, and I collaborate closely with engineering, DevOps, and product teams to reproduce defects, boost reliability, and streamline test processes. I’m especially interested in roles involving infrastructure, networking, or platform reliability.…Hi, I’m Roman Stoliar, a Senior QA Engineer with over 9 years of experience specializing in system-level testing, networking, and Linux-based environments. I’ve consistently worked on validating complex distributed systems, firmware, and network-dependent applications across web, mobile, and embedded domains. I excel at diagnosing performance, stability, and connectivity issues using tools like Wireshark, tcpdump, and iPerf, and I collaborate closely with engineering, DevOps, and product teams to reproduce defects, boost reliability, and streamline test processes. I’m especially interested in roles involving infrastructure, networking, or platform reliability.

Roman Stoliar

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Hi, I’m Roman Stoliar, a Senior QA Engineer with over 9 years of experience specializing in system-level testing, networking, and Linux-based environments. I’ve consistently worked on validating complex distributed systems, firmware, and network-dependent applications across web, mobile, and embedded domains. I excel at diagnosing performance, stability, and connectivity issues using tools like Wireshark, tcpdump, and iPerf, and I collaborate closely with engineering, DevOps, and product teams to reproduce defects, boost reliability, and streamline test processes. I’m especially interested in roles involving infrastructure, networking, or platform reliability.…Hi, I’m Roman Stoliar, a Senior QA Engineer with over 9 years of experience specializing in system-level testing, networking, and Linux-based environments. I’ve consistently worked on validating complex distributed systems, firmware, and network-dependent applications across web, mobile, and embedded domains. I excel at diagnosing performance, stability, and connectivity issues using tools like Wireshark, tcpdump, and iPerf, and I collaborate closely with engineering, DevOps, and product teams to reproduce defects, boost reliability, and streamline test processes. I’m especially interested in roles involving infrastructure, networking, or platform reliability.

Available to hire

Hi, I’m Roman Stoliar, a Senior QA Engineer with over 9 years of experience specializing in system-level testing, networking, and Linux-based environments. I’ve consistently worked on validating complex distributed systems, firmware, and network-dependent applications across web, mobile, and embedded domains.

I excel at diagnosing performance, stability, and connectivity issues using tools like Wireshark, tcpdump, and iPerf, and I collaborate closely with engineering, DevOps, and product teams to reproduce defects, boost reliability, and streamline test processes. I’m especially interested in roles involving infrastructure, networking, or platform reliability.

Skills

Experience Level

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Ukrainian

Fluent

English

Advanced

Work Experience

Senior Software Test Engineer at EPAM Systems

December 1, 2021 - April 1, 2026

- Validated backend and frontend behavior of web and mobile applications with a focus on API reliability, data consistency, and system stability across distributed systems. - Performed API testing and debugging using Postman and Swagger, validating authentication, request/response schemas, error handling, and edge cases. - Investigated complex defects using logs, API traces, and system-level analysis, supporting root-cause identification and faster resolution. - Worked with Dockerized services and Linux-based environments to support testing, environment setup, and issue reproduction. - Conducted cross-platform and cross-browser testing across web and mobile clients. - Collaborated closely with engineers, DevOps, and product teams to validate system integrations and improve platform reliability. - Designed and maintained test cases and documentation, improving coverage and onboarding efficiency. - Supported regression testing with automation tools (Cypress, Playwright)

Software Test Engineer / Network QA Engineer at GlobalLogic

August 1, 2018 - December 1, 2021

Performed end-to-end testing of firmware and network-connected devices, including smart TVs, wireless audio systems, and Wi-Fi routers used in large-scale consumer environments Conducted deep Wi-Fi and network performance analysis, identifying issues related to packet loss, latency, throughput, and roaming between access points Captured and analyzed network traffic using Wireshark and tcpdump to diagnose complex connectivity and stability problems Measured and validated network performance using iPerf3, IXIA, and inSSIDer, ensuring reliable behavior under different load conditions Investigated low-level networking issues across routers, access points, and mesh systems in real-world and lab environments Collaborated with developers and customer teams to isolate firmware and network stack defects, improving product stability and performance Designed and executed functional, regression, and exploratory tests across multiple firmware versions and device configurations Created and maintained detailed test documentation, improving defect reproducibility and test coverage Supported and analyzed automated test suites, identifying unstable tests and improving overall test reliability Produced network performance and quality reports, providing actionable insights for engineering and stakeholders firmware and device configurations.

Software Test Engineer at ELEKS

October 1, 2016 - August 1, 2018

Designed and maintained internal network topology and ensured stable operation of network equipment. Provided technical support for domain users and administered group policies. Installed, configured, and supported Windows-based workstations and software environments. Installed, configured, and maintained Windows servers, ensuring reliability, security, and uptime.

System Administrator at VFS Global

October 1, 2013 - October 1, 2016

- Designed and maintained internal network topology and ensured stable operation of network equipment. - Provided technical support for domain users and administered group policies. - Installed, configured, and supported Windows-based workstations and software environments. - Installed, configured, and maintained Windows servers, ensuring reliability, security, and uptime.