Михайло

Mykhailo Merkulov
QA ENGINEER
QA Engineer with over 1 year of practical experience in testing APIs
and web applications, network diagnostics, and issue investigation in
production environments. Right now I’m actively working on my test
automation skills through personal projects using Playwright,
TypeScript, and GitHub Actions. Comfortable working independently
and taking ownership of tasks without close supervision. Strong
analytical thinking and structured approach to problem-solving,
investigation, and prioritization.

WORK EXPERIENCE
CONTACTS SMS Club - QA Engineer / Tech support
Feb 2023 - Aug 2024
[открыть контакты](см. выше в блоке «контактная информация»)
[открыть контакты](см. выше в блоке «контактная информация») Designed API test suites in Postman for partner integrations and
issue investigations
Linkedin | Telegram | GitHub Identified a character encoding edge case (NBSP instead of space
Prague, Czech Republic causing GSM-7 to Unicode shift) through deep-level investigation,
improving billing accuracy
Diagnosed complex SMPP protocol and integration errors through
TECHNICAL SKILLS detailed Wireshark and TCP dump analysis
JavaScript/TypeScript Established a standardized bug reporting workflow adopted by the
(Playwright) entire team, leading to faster issue resolution and clearer
API testing (Postman) reproduction steps
Manual testing (functional, Designed and executed test cases and checklists for core features
regression, smoke testing) of the user dashboard and internal admin panel to ensure quality
Test case design and bug for both users and employees
reporting Collaborated with developers to clarify requirements for new
SDLC (Agile/Scrum), acceptance features and identify potential issues early in the development
criteria definition process.
LLM-driven development Performed final sanity and regression checks of key functionalities
CI/CD (GitHub Actions) before deployments to ensure stable releases.
SQL (PostgreSQL) AceMount Media - Business Development Manager
Log and network traffic analysis Aug 2024 - now
Linux / CLI
Managed 40+ international partner accounts across SMS/VoIP
TOOLS traffic maintaining long-term relationships
Signed contracts with new partners and coordinated their
Postman
platform integration by aligning internal tech team
Playwright
Handled financial matters and promptly resolved traffic-related
Jira
issues
Browser DevTools
DBeaver
Git & GitHub PROJECTS
Docker
Wireshark Microsoft Graph API Mock Server | GitHub ↗
Tableau
Designed a Node.js mock server using Cursor (LLM-integrated IDE)
LANGUAGES to simulate Microsoft Graph API chat endpoints using real export
data (50K+ messages)
English - Upper Intermediate Implemented identity resolution, pagination and exclusion filters
Ukrainian - Native to remove corporate Azure AD dependencies for local development
Czech - Basic and testing of ingestion pipelines.
Developed API tests in Playwright and TypeScript with Facade
EDUCATION pattern and AAA structure, integrating automated CI runs via
Igor Sikorsky Kyiv Polytechnic GitHub Actions on every push
Institute ReqRes API Testing | GitHub ↗
Master's degree in Cybersecurity
2017-2022 Designed and executed positive, negative, and boundary test
cases for a public REST API using Postman
Prepared structured test case documentation, including edge
cases and undefined API behaviour, identified architectural
inconsistencies and security risks