Tudor G. Anastasiu

Blockchain Engineer · Web3 Security Researcher

@tudor_anastasiu

GitHub

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About

Blockchain engineer with experience across smart contracts, backend systems, protocol security research, and product strategy in Web3/DeFi. Has worked on execution tracing, monitoring systems, account abstraction, and blockchain infrastructure.

Experience

Blockchain Engineer/Researcher

Tenderly

Jul 2025 – Present

Tech Lead for Security Simulations, then expanded into monitoring product strategy and DeFi vertical integration. Worked across EVM internals, distributed backend systems, and protocol-aware tooling for institutional users.
Founding Engineer

Sherpa.trade (Hedgemony)

Dec 2024 – Jul 2025

Led architecture and delivery of a meta-aggregator swap and strategy execution platform on Safe smart wallets and account abstraction across contracts, backend, and infrastructure.
Web3 Security Researcher

Personal Projects

Oct 2023 – Dec 2024

Participated in smart contract auditing contests, shadow audited past contests, solved CTF security challenges, built a marketplace protocol, and analyzed DeFi hacks.
DeFi Engineer

ParaSwap

Jan 2023 – Aug 2023

Worked across the DeFi liquidity aggregator system, integrating DEXs and lending protocols, improving RFQ performance, writing tests, and handling incident response.
Senior Software Engineer

Personal Projects

Aug 2022 – Dec 2022

Developed blockchain bots for arbitrage and liquidations and researched zero-knowledge proofs and their applications in crypto.
Senior Software Engineer

Bitcoin Computer (Remote at Toptal)

Oct 2020 – May 2021

Designed and developed the backend stack to scale the main JavaScript library for enabling smart contracts on Bitcoin blockchains.

Skills

2 to 5 years

Backend development Blockchain Analysis

1 to 2 years

Research Monitoring Risk Analysis Product Strategy Incident Response Security Research Protocol Analysis Product Management Earned Value Management Smart Contract Development

6 to 12 months

DevOps Testing Observability Database Design Architecture Design Blockchain infrastructure API design and development

3 to 6 months

Automation

Tools / apps / platforms

2 to 5 years

Foundry

1 to 2 years

MongoDB Postgres Snowflake Apache Kafka Amazon Web Services AWS

6 to 12 months

S3 Redis Docker Sentry Hardhat Postman Arbitrum PostgreSQL GitHub Actions Amazon Elastic Compute Cloud EC2

📚 Publications

How to Mitigate Balancer-Like Exploits with Invariant Monitoring

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