Blockchain Security Expert - Security Audit Track

CertiK; Deutschland; Remote; EUR 107,000 - 160,000; Full time

Benefits offered by this job

Medical, vision, and dental insurance

401(k) plan with company matching

Flexible paid time off and holidays

Variable commission program

Job summary

CertiK, a leader in blockchain security, is seeking a Security Engineer to join its security offerings. You will work across consulting, reviewing, auditing, and verifying smart contracts and blockchain systems, collaborating with the security team to deliver top-tier products and services.

You’ll engage with clients, expand security-related products, and stay ahead of emerging threats in the blockchain space.

Qualifications

• Bachelor's degree in Security, Computer Science, Mathematics, Physics, and Engineering.
• Specialist-level knowledge of cybersecurity and security auditing.
• Strong communication skills in English, both written and verbal.

Responsibilities

• Perform end-to-end security services for blockchain systems, including auditing and verification.
• Conduct manual code reviews to identify vulnerabilities and edge cases.
• Develop threat models and assess risks for protocols.
• Design and execute security tests and gas-related analyses.

Skills

Security auditing

Smart contracts

English communication

Education

Bachelor's degree in Security, Computer Science, Mathematics, Physics, and Engineering

Tools

Solidity

Golang

Rust

Job description

Location: United States

About You

You’re a self-starter. You believe in tackling the most important problems, even if they are the most difficult problems. You’re comfortable with the unknown and understand that #startuplife means that you’re going to be wearing multiple hats. And that’s what motivates you. You’re accountable and obsessed with improvement, both in yourself and in others. You’re up to the challenge of building a world-class company that aims to be the infrastructure for more secure software for all.

About the Company

CertiK leads blockchain security by securing smart contracts and blockchains with cutting‑edge Formal Verification technology. Founded by Computer Science professors of Yale University and Columbia University, CertiK has audited and secured over $500B in assets, including many of the world’s top blockchain projects.

About the Role

The primary responsibility of this role is for CertiK’s security‑related services. Intersecting cybersecurity and blockchain, CertiK’s security offerings include security consulting, security reviews, security auditing of smart contracts and blockchains, verification of smart contracts, penetration testing, and more.

As a Security Engineer at CertiK, you will contribute to the security offerings of the company, working with the rest of the security team to deliver the best products and services. You might engage directly with CertiK’s existing and future clients, participate in expanding security‑related products and services, and follow the blockchain world on emerging security problems and trends.

Responsibilities

• Perform end‑to‑end security services, including consulting, reviewing, auditing, verifying, testing, and delivering detailed security assessments for blockchain systems such as smart contracts, web3 protocols, L1/L2/L3 infrastructures, and dApps.

• Conduct comprehensive manual code reviews to identify vulnerabilities, logical flaws, economic attacks, and non‑obvious edge cases across Solidity, Golang, Rust or other blockchain languages.

• Develop and refine threat models and attack surfaces, covering economic, technical, operational, and trust‑assumption risks for blockchain protocols.

• Design and execute security tests, including property‑based testing and gas‑related analysis.

Requirements

• Bachelor's degree in Security, Computer Science, Mathematics, Physics, and Engineering

• The ability to efficiently triage and juggle multiple priorities and deadlines.

• Specialist‑level knowledge of cybersecurity and security auditing. Can write and deploy smart contracts/blockchain infrastructure and write tests with frameworks.

• Familiar with classic attack vectors and vulnerabilities such as reentrancy, sandwich attacks, overflow/underflow

• The ability to effectively communicate with the clients and internal team, both verbally in English and in writing, about security services and requirements.

• [Preferred] Prior hands‑on security auditing experience.

What We Offer

• Opportunity to shape the national conversation on blockchain and security.

• Collaborate with industry‑leading security researchers, technologists, and global institutions.

• Flexible work environment and mission‑driven culture.

Compensation

Additional Information

Compensation: If the role is performed in the US, the target annual compensation is $120,000 - $180,000. The exact compensation at which this job is filled will be determined by the skills and experience of qualified candidates.

#blockchain

#startups

#hiring

CertiK accepts applications for this position on an ongoing basis.

CertiK is proud to offer medical, vision, and dental insurance, 401(k) plan with company matching, life and accidental death and dismemberment insurance, HSA (with high deductible plan), FSA, and other benefits to all full‑time employees, along with flexible paid time off and holidays. CertiK also offers a variable commission program for business development sales roles.

In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.

CertiK is proud to be an equal opportunity employer. We will not discriminate against any applicant or employee on the basis of age, race, color, creed, religion, sex, sexual orientation, gender, gender identity or expression, medical condition, national origin, ancestry, citizenship, marital status or civil partnership/union status, physical or mental disability, pregnancy, childbirth, genetic information, military and veteran status, or any other basis prohibited by applicable federal, state or local law.

CertiK will consider for employment qualified applicants with criminal histories in a manner consistent with local and federal requirements.

https://www.eeoc.gov/sites/default/files/migrated_files/employers/poster_screen_reader_optimized.pdf

All CertiK employees are expected to actively support diversity on their teams, and in the Company.