Contact information

You can get this candidate's contact information from https://www.work.ua/resumes/20207149/

Work experience

Blockchain Protocol Engineer

from 03.2025 to 09.2026 (1 year 7 months)
under NDA, Дистанційно (IT)

• End-to-end ownership of testing for a GMXv2 based DEX and its trading infrastructure
• Designed and automated coverage for Reward Distributor services and reward calculation/distribution workflows
• API tests, smart-contract tests with both wired into the regression pipeline
• Tested Keeper services responsible for automated order execution and protocol operations
• Spent a lot of time on Oracle/price-feed edge cases like bad prices, feed failures, fallback logic
• Tested order execution, checkout/settlement and account balances, Investigated complex defects across APIs, backend services, databases, smart contracts, blockchain transactions and asynchronous processing and proposed a fix that cut transaction execution time from 5 minutes to 30 seconds with zero financial loss
• Made sure on-chain state and off-chain application data never drifted apart
• Performed exploratory and risk-based testing of critical financial flows
• Also involved in requirements review and release sign-off

Blockchain Developer

from 05.2023 to 03.2025 (1 year 11 months)
Cyber Bee, Дистанційно (IT)

• Performed security-focused testing of financial and smart-contract workflows, and optimized automated suite execution time from 3 hours down to under 10 minutes
• Covered DEX, staking, vesting and treasury flows across several client products
• Built and maintained automated test suites for smart-contract and API regression coverage
• Mix of API, integration, backend and smart-contract testing
• Validated data consistency across APIs, backend services, databases and blockchain transactions
• Chased several defects that only showed up when multiple services interacted, for example the issues often caused by timing or state mismatches
• Code reviews and requirements analysis alongside testing
• Tested payment processing, subscriptions and account/treasury flows (payment gateway and billing testing)

Python/Solidity developer

from 09.2021 to 05.2023 (1 year 9 months)
Consider It Done Tech, Дистанційно (IT)

• Tested complex DeFi systems consisting of 25+ interdependent smart contracts
• Developed automated test suites for smart-contract regression and mainnet-fork testing
• Performed mainnet-fork testing to catch scenarios that could result in significant financial loss and expose the client to regulatory/legal liability
• Tested staking, yield farming, vesting, liquidity and token workflows
• Traced smart-contract bugs back through the integration layer and confirmed fixes didn't break anything downstream
• Contributed to security audit preparation and remediation of identified issues

Blockchain & Backend Development

from 05.2018 to 09.2021 (3 years 5 months)
Beemster Team, Одеса (IT)

• Tested integration of a new banking system, replacing the legacy payment provider
• Tested exchange functionality, APIs and crypto-payment workflows end to end
• Automated API and smart-contract test coverage
• Performed functional, integration, regression and backend testing
• Designed test scenarios for ICO, token, payment and transaction workflows
• Investigated API and backend defects and validated fixes

Education

ДонНТУ

Computer Engineering, ФКНТ, Покровськ
Higher, from 2013 to 2017 (4 years)

Additional education and certificates

190+ Hours of Japanese Conversation with a Native Speaker

2024-2026
Certificate

Foundations of Project Management

2023
Certificate

Knowledge and skills

• Cinema 4D
• Octane Render
• Adobe Premiere Pro
• Ручне тестування
• HTML
• Git
• Написання bug reports
• Написання тест-кейсів
• Здатність до навчання
• Ведення документації
• Складання чеклістів
• Неконфліктність
• Scrum
• Jira
• Адаптивність
• Postman
• CSS
• JavaScript
• Python
• TypeScript
• Django
• Django Rest Framework
• Node.js
• Ведення E-commerce проєктів
• Web2
• Web3
• EVM
• Solidity
• Hardhat
• Foundry
• API
• Defile
• PyTest
• L0
• L1
• L2
• Користувач ОС Linux
• Адміністрування MacOS
• Користувач ОС Windows
• Notion
• Hyperliquid
• AQA

Language proficiencies

• English — fluent
• Ukrainian — fluent
• Japanese — beginner

Additional information

https://github.com/shadowsupercoder