Blockchain Security Analyst — Security

Chainlink Labs develops blockchain infrastructure that provides oracle, interoperability, compliance, and data services for decentralized applications, tokenized assets, lending, payments, and other onchain systems. This United States remote role sits within the Security team and focuses on blockchain infrastructure roles involving investigations, threat analysis, and incident response across EVM and non-EVM networks.

The Blockchain Security Analyst will conduct complex investigations, trace cross-chain fund movements, analyze RPC-level blockchain data, and support active security events. The position is an individual contributor role with significant ownership, working closely with security researchers, protocol teams, incident response specialists, and data engineers. Candidates with experience in Security, audits, DeFi infrastructure, remote operations, and onchain analytics environments will be particularly relevant for this position.

🔹 Responsibilities

• Conduct blockchain investigations involving exploits, phishing campaigns, laundering activity, bridge incidents, and other onchain threats

• Trace funds across multiple chains, bridges, mixers, and DeFi protocols to identify patterns, attribution opportunities, and risk exposure

• Analyze transaction traces, calldata, logs/topics, and RPC-level blockchain data to produce high-confidence investigative findings

• Build lightweight tooling and scripts to automate repetitive analysis tasks, enrich datasets, and improve investigation workflows

• Produce concise reports and presentations that communicate technical findings to both technical and non-technical stakeholders

• Support incident response efforts during active investigations and security events

• Collaborate with internal teams to improve detection methodologies, investigative tooling, and operational processes

• Monitor developments in exploit techniques, threat actor behavior, laundering methodologies, and broader blockchain security trends

🔹 Requirements

• Deep understanding of the EVM ecosystem with familiarity across SVM and other non-EVM chains

• Ability to explain transaction structures, calldata, logs/topics, traces, and related onchain mechanics

• Strong knowledge of DeFi protocols, bridges, multisig architectures, and wallet infrastructure

• Experience extracting, analyzing, and interpreting onchain data through block explorers, transaction traces, event logs, and raw RPC responses

• Ability to build lightweight tooling and scripts for investigation automation, dataset enrichment, and blockchain analysis

• Experience using Chainalysis Reactor, TRM Labs, Arkham, Nansen, or similar investigation platforms

• Experience tracing funds across bridges, mixers, and cross-chain protocols

• Strong written and verbal communication skills with the ability to summarize technical findings clearly

Preferred Requirements

• Experience interacting directly with blockchain RPC endpoints rather than relying exclusively on third-party APIs or indexing services

• Familiarity with AI-assisted investigation workflows, automation, and development tooling

• Experience participating in on-call rotations and incident response operations

• Familiarity with exploit patterns, laundering techniques, phishing infrastructure, and threat actor tradecraft

• Understanding of sanctions screening and attribution methodologies

• Ability to read and analyze smart contract code, preferably Solidity and Rust

• Familiarity with MEV, validator infrastructure, and transaction propagation mechanics

• Experience querying blockchain datasets using Dune, Flipside, BigQuery, or self-hosted indexers

• Prior experience working within web3 startup environments

🔹 Compensation & Benefits

• Annual cash compensation: USD $129,000 – $304,000

• Compensation determined by skills, experience, qualifications, and geographic location

• Zone-based compensation model

• Long-term incentive program

• Comprehensive benefits package

• Full-time employment structure

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