Sr. Security Engineer (Penetration Testing)

USARemoteFull-time$100k–$180k2026-10-27 → 2026-11-10

Remote · from United States

Core

Conducting security assessments, penetration testing, and source code reviews for web, mobile, cloud, and blockchain applications.

Role type

Senior IC penetration tester (application security)

Builds

Comprehensive pentest reports and innovative security tools/methodologies for clients

Domain

Cybersecurity + Blockchain/Web3

Required skills

Application security, penetration testing, source code review (JavaScript/TypeScript), mobile app pentesting, cloud security (AWS/Azure/GCP), Python/Bash scripting, cryptography

Preferred skills

Web3 pentesting (exchanges/wallets/Dapps), smart contract security audits, browser extension security, bug bounty participation, security conference speaking

Technologies

Python, Bash, JavaScript, TypeScript, AWS, Azure, GCP

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 techniques, tools, and methodologies for pentesting applications in the blockchain space

Seniority

Senior, hands-on IC

About CertiK

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.