Dobri Vasilev

Dobri Vasilev
5,000× GPU Speedup611K Pools Indexed6 Chains in Production3,000+ Users Shipped

Rust systems engineer & security researcher,
auditing $5B+ DeFi protocols and building zero-latency MEV infrastructure.

What I've Built

Projects

MEV Infrastructure

Ethereum MEV Arbitrage Pipeline

Built as a Reth Execution Extension that runs inside the node process. While standard bots connect over WebSocket with 50-500ms latency, this accesses the mempool at the function-call level with zero latency.

611,241Pools Indexed
672Arbs Detected Live
1.85MRoutes per Second

How It Works hover each stage for details

Reth ExExIn-process
Mempool43K txs/min
Arb EngineBellman-Ford
REVM Sim<2ms
Builders12 parallel

Pending transactions flow through 5 stages. Each arb is simulated in REVM and bundled to 12 block builders simultaneously via Flashbots.

The Edge

Runs as a Reth ExEx plugin, not an external bot. Mempool access at the function-call level. Same architecture used by the top 5 Ethereum searchers.

Reverse-engineered 53 competitor transactions. Top searcher: $1,362/hr via 10-38 swap bundled routes.

Deployed on 6 Chains hover for contract addresses

Ethereum
Arbitrum
Optimism
Base
Avalanche
Scroll

13 Etherscan-verified contracts across 5 chains. Full Reth + Lighthouse node on GCP (1.2TB chain data).

Built With

RustSolidityReth ExExREVMBellman-FordBalancer Flash LoansFoundryEIP-191
Performance Engineering

GPU-Accelerated Backtesting Engine

Evaluating 1 trillion+ parameter combinations required going from Python (25ms/test) to Rust (10us) to custom GPU compute shaders (3us). A staircase algorithm eliminates 99.999% of candidates before the GPU fires.

5,000×Speedup
1.39BCombos Swept
50.7sWall Time

Python → Rust → GPU

Python25msRust10usGPU3us5,000x

How It Works hover each stage

Strategy DSL209+ conditions
Staircase10M× reduction
GPU Dispatch3 backends
Results50.7s total

Strategies flow through a DSL, get reduced by the staircase algorithm, dispatched to GPU, then validated by a statistical anti-overfit firewall.

The Edge

Standard backtesting libraries max out at 1,000 tests/second. This does 100,000-300,000. The staircase algorithm is the key: it proves mathematically that most of the search space can be skipped.

735K+ lines of code. 1,608 commits. Three GPU shader languages. Not a weekend project.

Three GPU Backends

Apple MetalMSLNative M-series, lowest latency
WebGPUWGSLCross-platform compute shaders
CUDACUDA C++NVIDIA datacenter GPUs

Built With

RustMetal (MSL)WGSLCUDAPyO3SIMDRayon
Security Research

Smart Contract Auditing & Cybersecurity

Active security researcher on Immunefi and Cantina. 6+ formal vulnerability reports targeting protocols with $50M to $5B+ in TVL. All findings backed by Foundry fork-test proof-of-concepts.

ENS$2.8B TVL
Critical + Medium

Naming system vulnerabilities in registration flow

MakerDAO$8.5B TVL
14 repos reviewed

PSM3, aToken accounting across Spark protocol

Ethena$3.2B TVL
3 vulnerabilities

Oracle manipulation, uint8 overflow, bridge vuln

SSV Network$1.5B TVL
Reentrancy

Reentrancy vector in validator registration

foundry-test
$
6+Formal Reports
$15B+Combined TVL Audited
security-ai-lab

Cybersecurity Platform

Conducted full security audit: identified 54 vulnerabilities (12 Critical, 15 High). Fixed all Critical issues: SSRF proxy bypass, shell injection, OAuth account linking, plaintext key storage. Score improved from 35/100 to 72/100. GDPR compliance with Bulgarian DPA registration.

3,000+users
877commits
54vulns fixed
audit-results

Security Audit

3572Security Score
12 Critical
15 High
All Critical Fixed
SolidityFoundryREVMInvariant FuzzingFork TestingNext.js 15React 19TypeScriptAuth.jsStripePostgreSQLPostHog