Sr. Security Engineer (Penetration Testing)

Devconnectplatform; United States; Remote; USD 100,000 - 180,000; Full time

Benefits offered by this job

Medical insurance

Vision insurance

Dental insurance

401(k) with company matching

HSA

Job summary

CertiK is seeking a Senior Security Engineer specializing in penetration testing to advance security across web, mobile, and blockchain apps. You will perform assessments, source code reviews, and cloud security reviews while producing clear reports for technical and non-technical audiences.

In this remote, full-time role you will contribute to research and tooling efforts, publish findings, and help raise standards in blockchain security. Salary range reflects US market norms.

Qualifications

• Minimum of 4 years of experience in application security and penetration testing.
• Experience in source code review for different languages, with strong understanding of JavaScript and TypeScript.
• Familiar with cloud platforms and their security risks (AWS, Azure, GCP).
• Excellent written and spoken communication skills.

Responsibilities

• Perform security assessments on web, mobile, thick client applications, and browser extensions.
• Conduct external and internal network penetration tests.
• Perform security source code reviews.
• Perform cloud security reviews.
• Develop comprehensive pentest reports for technical and non-technical audiences.
• Research and develop innovative pentesting techniques and tools for blockchain space.

Skills

Penetration testing

Application security

Source code review

Cloud security

Strong communication

Blockchain/Web3 security

Education

BS/MS/PhD in Computer Science or Information Security

Tools

JavaScript

TypeScript

Python

Bash

AWS

Azure

GCP

Job description

# Sr. Security Engineer (Penetration Testing)CertiK100k–180k USDFull-timeremote· seniorUSAweb3javascripttypescriptawsazuregcppythonListed via Jobicy · posted 27 Oct 2026. The application happens there, not on DevConnect.Apply on Jobicy## DescriptionWhy Us?CertiK is a pioneer in blockchain security, leveraging best-in-class AI technology to protect and monitor blockchain protocols and smart contracts. Founded in 2018 by professors from Yale University and Columbia University, CertiK’s mission is to secure the web3 world. CertiK applies cutting-edge innovations from academia to enterprise, enabling mission-critical applications to scale with safety and correctness.About the RoleThe 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. We are looking to hire someone with a passion for application security and penetration testing. This is a fun and challenging full-time position. If you are excited about hacking, threat modeling, scanning, auditing, designing, and enhancing the security of applications across the board then you will thrive in this role. While you work with clients, we will also provide you with plenty of opportunities to get involved with research and development efforts to help us raise the standards of blockchain security.Responsibilities- Perform security assessments on web, mobile, thick client applications, and browser extensions- Conduct external and internal network penetration tests- Perform security source code reviews- Perform cloud security reviews- Develop comprehensive pentest reports for both technical and non-technical audiences- Research and develop innovative techniques, tools, and methodologies for pentesting applications in the blockchain space- Contribute to the community by developing tools, presentations, and blog postsRequirements- Passionate about cryptocurrency, DeFi, and blockchain, with a willingness to learn Web3 technologies such as smart contracts- Minimum of 4 years of experience in application security and penetration testing- Experienced in source code review for different languages, with a strong understanding of JavaScript and TypeScript- Experienced in mobile application penetration testing- Familiar with cloud platforms and their security risks, such as AWS, Azure, and GCP- Experience in programming with scripting languages such as Python and Bash- Solid understanding of cryptography- BS/MS/PhD in Computer Science or Information Security- Strong spoken and written communication skillsBonus Points- Experienced in pentesting Web3 applications such as crypto exchanges, wallets, Dapps, and key custodian solutions- Experienced in smart contract security audits- Familiar with browser extension architecture and security risks- Actively participate in the blockchain security community- OSCP, OSWE, OSCE, GWAPT, or comparable certification- Participated in bug bounty programs and audit contests- Published security-related blog posts and spoken at security conferences and/or local meetupsCompensationAdditional InformationAbout the CompanyOne of the fastest-growing and most trusted companies in blockchain security, CertiK is a true market leader. To date, CertiK has worked with over 3,200 Enterprise clients, secured over $310 billion worth of digital assets, and has detected over 60,000 vulnerabilities in blockchain code. Our clients include leading projects such as Aave, Polygon, Binance Smart Chain, Terra, Yearn, and Chiliz.Investors = Insight Partners, Sequoia, Tiger Global, Coatue Management, Lightspeed, Advent International, SoftBank, Hillhouse Capital, Goldman Sachs, Coinbase Ventures, Binance, Shunwei Capital, IDG Capital, Wing, Legend Star, Danhua Capital and other investors.CompensationTarget annual base salary for this role performed in the US is $100,000 - $180,000. The exact compensation at which this job is filled will be determined by the skills and experience of qualified candidates.#LI-Remote#blockchain#startups#hiringCertiK 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.pdfAll CertiK employees are expected to actively support diversity on their teams, and in the Company.