Web3 Jobs in California, United States

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Job Position Company Posted Location Salary Tags

Confidential

San Francisco, CA, United States

$90k - $150k

Vondran Legal®

San Francisco, CA, United States

$22k - $28k

Serotonin

San Francisco, CA, United States

$80k - $190k

SentiLink

Los Angeles, CA, United States

$250k - $280k

Confidential

San Francisco, CA, United States

$100k - $109k

Brave

San Francisco, CA, United States

$90k - $120k

Bookwallah Organization

United States

$101k - $163k

Consensys

Remote

$146k - $218k

Mamoru

Johannesburg, CA, United States

$36k - $100k

KAST

San Francisco, CA, United States

$63k - $110k

B3 Zenith | Finance & Transformation

Los Angeles, CA, United States

Superlogic

Los Angeles, CA, United States

$72k - $110k

Superlogic

Los Angeles, CA, United States

$72k - $110k

Pubgenius Inc.

United States

$120k - $180k

Phantom

San Francisco, CA, United States

$124k - $144k

Confidential
$90k - $150k estimated
San Francisco Bay Area US

About the Role

This role focuses on building AI-driven systems for blockchain security research, smart contract analysis, and onchain threat detection. You will work at the intersection of AI agents, blockchain infrastructure, and offensive security to improve automated vulnerability discovery and security investigation workflows across Web3 ecosystems.


Key Responsibilities

  • Build AI-assisted systems for smart contract security analysis and vulnerability detection.
  • Research and develop AI agents capable of analyzing smart contracts, protocol logic, and cross-chain transaction flows.
  • Build internal tooling for automated security investigation, exploit analysis, and threat detection across blockchain ecosystems.
  • Improve AI reasoning over large codebases, protocol interactions, wallet activity, and complex execution flows.
  • Collaborate with security researchers, protocol engineers, and infrastructure teams to improve security monitoring and incident response capabilities.
  • Stay up to date with emerging blockchain attack techniques, AI security trends, and evolving Web3 infrastructure.

Major Requirements

  • Graduates with degrees in computer science, artificial intelligence, blockchain or security.
  • Experience in one or more of the following areas: blockchain security, smart contract auditing, and vulnerability research
  • Familiarity with blockchain ecosystems, EVM internals, smart contract execution, and transaction lifecycle analysis.
  • Understanding of common Web3 attack vectors, including: reentrancy attacks, access control vulnerabilities, signature replay attacks, oracle manipulation attacks, and cross-chain bridge exploits
  • Familiarity with security concepts such as vulnerability analysis, blockchain security monitoring, attack investigation, or exploit validation.
  • Experience building AI workflows, retrieval systems, tool-calling agents, or LLM-powered security tools.
  • Strong analytical mindset with an interest in AI-driven security research and blockchain infrastructure.
  • Familiarity with blockchain-related cryptographic concepts such as hashing, digital signatures, Merkle trees, MPC, or consensus mechanisms is preferred.