Даніїл

Daniil Herasymenko
Strong middle QA engineer
[open contact info](look above in the "contact info" section) [open contact info](look above in the "contact info" section) Irpin, Kyiv region, Ukraine LinkedIn

PROFILE
Strong Technical QA Engineer with 6+ years of experience in a product company. Expert in testing complex
distributed systems and web/​mobile. Proficient in networking and backend analysis with the ability to read
and debug code. Skilled in API validation, monitoring, and troubleshooting at all layers. Focused on an
engineering-driven approach to quality.

PROFESSIONAL EXPERIENCE
QA & Support Engineer 07/2019 – Present
System & API Testing: Performed full-cycle testing of RESTful services and
• Kyiv, Ukraine
network devices (DOCSIS/​GPON); verified data integrity, payload stability, and
error handling.
Network & Traffic Analysis: Analyzed L3-L7 traffic using Charles Proxy,
•

Proxyman, and Wireshark to debug client-server communication and localize
complex defects.
Infrastructure & Monitoring: Managed test environments with Docker/​
•

Podman and localized backend errors using Kibana, Grafana, and Prometheus
dashboards.
Mobile & Web QA: Conducted cross-platform functional and compatibility
•

testing on real devices and BrowserStack to ensure UI/​UX consistency across
iOS and Android.
Process & Documentation: Developed test plans, checklists, and traceability
•

matrices in Testomat.

SKILLS
Testing Tools API & Protocols
Testomat, TestRail, Jira, Confluence, Git. Postman, Swagger, SoapUI, gRPC (Protobuf),
WebSockets, HTTP/​HTTPS, TCP/​IP, SNMP.
Web & Mobile Testing
Charles Proxy, Proxyman, BrowserStack, Chrome Linux & Infrastructure
DevTools, Real iOS/​Android devices testing. Linux (RedHat, CentOS, Rocky, Ubuntu, etc.),
Docker, Podman, Bash scripting, Git.
Infrastructure & Logs
Docker, Podman, Jenkins, Kibana, Grafana, Linux Databases
CLI utilities, Prometheus. PostgreSQL, MySQL, MongoDB, Redis.
Networking Programming
TCP/​IP (L1-L7), Wireshark, iPerf, DOCSIS /​GPON. Golang, Bash, SQL.

TECHNICAL EXPERTISE
Code-Level Analysis Architecture & Data
Proficient in reading and debugging source code to Solid understanding of service-to-service
perform root-cause analysis and provide highly communication (REST/​gRPC) and data integrity
detailed technical bug reports. across PostgreSQL, Redis, and MongoDB.

EDUCATION
Master’s Degree in Data Analytics 09/2024 – 01/2026
National University of Food Technologies Kyiv, Ukraine
Bachelor’s Degree in Telecommunications 09/2015 – 06/2019
National Technical University of Ukraine “KPI” (2015–2019) Kyiv, Ukraine

LANGUAGES
English Ukrainian
B2 (comfortable for interviews) Native