ishtagy

Blockchain Security Engineer

Smart Contract Auditor and Blockchain Security Engineer with 3+ years of experience securing DeFi protocols on EVM. I've done internal and external security audits, contributed to custom static analysis rules (Semgrep), participated in Web3 SOC operations, and managed security for cross-chain integrations (LayerZero) and multi-sig infrastructure. Previously worked as a SOC Engineer in traditional cybersecurity, which gives me a systems-level perspective beyond just the contracts.

Proficient in Solidity, Foundry, Python, TypeScript, and Rust. Deep knowledge of EVM internals, proxy patterns, gas optimization, and token standards.

Looking for remote roles in smart contract security or smart contract engineering — auditing, security research, or building secure DeFi protocols.


Experience: 4 years

Yearly salary: $0

Hourly rate: $20

Nationality: 🇰🇿 Kazakhstan

Residency: 🇰🇿 Kazakhstan


Experience

Blockchain Security Engineer
DatsTeam
2025 - 2025
Performed internal security audits of EVM smart contracts and protocol components. Reviewed external audit findings and verified fixes across multiple audit cycles. Conducted remediation validation and security regression testing before deployments. Assessed broader security posture including CI/CD, infrastructure, and access controls.
Web3 Security Researcher
Decurity
2024 - 2024
Conducted Web3 security audits, identifying vulnerabilities in smart contracts and DeFi protocols. Participated in Web3 SOC operations, analyzing suspicious on-chain activity. Developed custom Semgrep rules to automate vulnerability detection.
Educator at the Blockchain Center
Astana Hub
2023 - 2023
Conducted weekly study sessions for over 500 students and developed customized blockchain engineering training programs.
SOC Engineer
Transtelecom JSC
2022 - 2024
Investigated and remediated security incidents in collaboration with cross-functional teams. Developed a Telegram bot to automate key security processes, enhancing operational efficiency and system integration.

Skills

evm
rust
solana
solidity
english
russian