Денис

Denys Tkachyk
Software Development Engineer in Test (SDET)

Executive Summary
• 4+ years of experience in software development, test automation, API testing, and device-based quality assurance.
• Strong experience with Python-based automation, API validation, consumer device automation, manual and exploratory
testing, Selenium, Behave, Jenkins, REST APIs, Flask, MySQL, and PostgreSQL.
• Hands-on experience directing AI coding agents (Claude Code) and building custom AI agents on the Anthropic Messages
API to accelerate test planning, automation, and code review.
• Proficient with Git, Jenkins, Jira, Postman, Apidog, Docker, Figma, ClickUp, and Worksection.
• Adept at validating web, mobile, API, and device behavior with clear defect isolation and reporting.
• Proactive and detail-oriented, with strong analytical and problem-solving skills.

Technical Skills

Skill Category Skill List
Programming Languages Python, SQL
Technologies Python, Selenium, Behave, Docker, Flask, Requests, consumer device
automation
AI & Automation Claude Code and other AI coding agents, Anthropic Messages API (custom
Python agents), MCP (Model Context Protocol), prompt/context engineering,
AI-assisted test-plan generation, security review of AI-generated code (SAST)
RDBMS MySQL, PostgreSQL
Web REST APIs, API development & automation, HTML
Operating Systems Linux, Windows
Development Tools IntelliJ IDEA, Jenkins, Git, Postman, Apidog, Docker, Jira, Worksection,
ClickUp, Figma, VS Code
Verticals SDET, QA Automation, Device Testing, API Testing, Web Development,
Finance
Testing Python test automation, API automation, device automation, exploratory
testing, UI testing, manual testing (Android & iOS)

AI & Automation
• Direct AI coding agents (Claude Code) for day-to-day QA work: generating structured test plans, drafting automation
scaffolding, and speeding up regression analysis.
• Build custom AI agents in Python on the Anthropic Messages API for automation and analysis tasks outside standard
tooling.
• Working knowledge of MCP (Model Context Protocol) and agent/tool integration patterns, including subagent and hook-
based workflows.
• Review and refactor AI-generated (“vibe-coded”) code for security vulnerabilities and code quality, applying SAST tooling
and manual code review.
• Apply context-engineering practices — structured prompts, project-level context files, and reusable workflow patterns — to
get reliable results from AI coding tools.

Foreign Language Skills

Language Written Spoken
English Upper-intermediate Upper-intermediate

Education

Institution: Vinnytsia National Technical University, Vinnytsia
Date(s) Attended: Sep 2014 – Jul 2018
Qualification(s): Bachelor’s in System Engineering

Institution: Vinnytsia National Technical University, Vinnytsia
Date(s) Attended: Sep 2018 – Dec 2019
Qualification(s): Master’s in Automation of Computer Integrated Technologies

Professional Experience

Company: GlobalLogic
Duration: April 2025 – Present
Role: SDET
Project Name: Consumer Streaming Device Platform / Device Automation (client project)
Project description: Focused on consumer streaming device validation, Python-based automation, API
checks, and manual/exploratory testing to improve product quality and regression
confidence, increasingly supported by AI-assisted tooling.
Responsibilities: Developing and maintaining Python-based automation for consumer device
validation; automating API checks; performing manual and exploratory testing on
consumer devices; analyzing failures using logs and reproducible scenarios; reporting
defects clearly; collaborating with QA and engineering teams to improve automation
coverage and reliability; using AI coding agents (Claude Code) to draft structured QA
test plans and to review AI-generated code for security and quality issues.
Technologies: Python, API automation, device automation, Git, Jira, AI-assisted development tools
(Claude Code, Anthropic Messages API)

Company: Freelance (Part-time)
Duration: September 2024 – April 2025
Role: QA Engineer (Freelance, Part-time)
Project Name: Web & Mobile Testing
Project description: Provided freelance QA support for web and mobile products, covering manual
testing, exploratory testing, UI validation, API checks, and clear defect reporting.
Responsibilities: Manual and exploratory testing for Android, iOS, and web applications; API checks
with Postman; test case creation and execution; bug reporting and tracking using
ClickUp and Worksection; collaboration with designers via Figma.
Technologies: ClickUp, Worksection, Figma, Postman, Selenium, Android, iOS

Company: Spilna Sprava
Duration: June 2021 – August 2024
Role: AQA Engineer
Project Name: Rosco Vision
Project description: Focused on UI and API test automation, ensuring quality control of a web application
through various testing techniques.
Responsibilities: Test automation with Selenium and Behave; BDD testing and CI/CD integration
(Jenkins); API automated testing and documentation updates (Postman, Apidog);
report generation; bug reporting and tracking using Jira.
Technologies: Python, Selenium, Behave, Jenkins, Postman, Jira

Company: Spilna Sprava
Duration: June 2020 – August 2021
Role: Python Developer
Project Name: Proton Project / Financial Data Analysis
Project description: Worked on backend development and financial data processing, integrating market
APIs and performing data analysis.
Responsibilities: API development with Flask; mathematical modeling and calculations; database
management (MySQL); web scraping for financial market data; API integration with
Interactive Brokers, Yahoo Finance, IEX Trading; data processing and report
generation for financial forecasting.
Technologies: Python, Flask, MySQL, Pandas, Requests, API integration