Smart Contract Auditor

Learning path available

Highly Remote

Smart Contract Auditors are security specialists who review and analyze smart contract code to identify vulnerabilities, logic errors, and potential exploits. They protect protocols and users by ensuring code is secure before deployment.

Explore learning path Browse Security Auditor jobs

Key Responsibilities

Conduct comprehensive security audits of smart contracts and DeFi protocols
Identify vulnerabilities including reentrancy, access control, and economic exploits
Write detailed audit reports with severity classifications and remediation guidance
Develop and maintain automated security tooling and fuzzing infrastructure
Research new attack vectors, exploits, and security patterns in the ecosystem
Collaborate with development teams to implement security fixes and best practices

Hiring expectations

These describe experienced roles. Requirements vary by employer; use the learning path below to build toward them.

3+ years of smart contract development or security research experience
Expert-level Solidity knowledge including assembly and low-level EVM operations
Experience with security tools (Slither, Mythril, Echidna, Foundry fuzzing)
Track record of finding vulnerabilities through bug bounties or CTF competitions
Strong understanding of DeFi mechanics, flash loans, and economic attack vectors

Skills & Technologies

Solidity

Security Auditing

Fuzzing

Formal Verification

Slither

DeFi

Learn. Practice. Build.3 steps + a portfolio project

Courses & learning path

For Solidity developers moving into security research and contract review.

Before you start

Strong Solidity and EVM knowledge, including storage and external calls.
Comfort with Foundry, fuzzing basics and reading unfamiliar code.

New to Solidity? Start with the Solidity Developer learning path, then build experience with testing before taking on security review.

Start with Solidity development

See what you’ll build

Learn a review process
Develop a method for manual review, invariants and reproducible findings.
Cyfrin UpdraftFree
Smart Contract Security
Advanced · Video + practice audits
24 hours of course content
Open on Cyfrin Updraft: Smart Contract Security (opens in a new tab)
Access & course details: Smart Contract Security
Access
Free provider account
Language
English; translations available
Credential
Provider achievement available
Reviewed
Sep 18, 2026
Put it into practice: Follow a practice audit and write down the system assumptions before looking for bugs.
Recognize failure patterns
Explore deliberately vulnerable contracts through focused security challenges.
OpenZeppelinFree
Ethernaut
Intermediate · Security challenges
Time varies by challenge
Open on OpenZeppelin: Ethernaut (opens in a new tab)
Access & course details: Ethernaut
Access
Wallet and test network for browser challenges
Language
English
Credential
Focus on challenge write-ups
Reviewed
Sep 18, 2026
Put it into practice: Document the root cause and a possible fix for three solved levels.
Reason about DeFi systems
Practice finding issues that depend on interactions between contracts and economic assumptions.
The Red GuildFree
Damn Vulnerable DeFi
Advanced · Security challenges
Time varies by challenge
Open on The Red Guild: Damn Vulnerable DeFi (opens in a new tab)
Access & course details: Damn Vulnerable DeFi
Access
Public code; local development setup
Language
English
Credential
Focus on challenge write-ups
Reviewed
Sep 18, 2026
Put it into practice: Reproduce one challenge locally and add a regression test for your proposed fix.

Your portfolio project

A reproducible practice audit

Review a deliberately vulnerable training project and write a report another engineer can verify.

What to include

A clear scope and summary of the system assumptions.
Findings with impact, reproduction steps and working tests.
Suggested mitigations with a regression test and remaining limitations.

Explain why each finding matters and how you ruled out a false positive. Training exercises do not establish readiness to audit production funds.

Explore Security Auditor jobs

Selected by gm.careers for relevance and practical learning. Levels reflect our suggested sequence. Listed course times come from providers; allow extra time for practice. Provider credentials are separate from professional experience.

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