Senior Application Security Engineer

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Senior Application Security Engineer in USA

Consensys
Full time
Email

USA
09/25/2026
Report

Remote

Responsibilities

Determine the root cause and severity of vulnerabilities reported through the bug bounty platform.
Interface with ethical hackers, triage reports, and guide product engineering teams through remediation.
Document vulnerabilities clearly so engineering teams can take rapid action.
Write security engineering code, fix vulnerabilities in MetaMask client applications, and develop AI tooling for vulnerability determination and resolution.
Assess application vulnerabilities and coordinate remediation within established SLAs.
Conduct security design reviews, threat modeling, security testing, and code reviews for new product features.
Identify gaps in the secure software development lifecycle and lead efforts to address them.
Validate security patches and test for potential bypasses.
Develop automation and security controls and educate developers to prevent recurring vulnerabilities.
Participate in team meetings, roadmap planning, and security discussions.

Requirements

At least 6 years of experience building and securing software, including hands-on product or application security experience.
Experience securing modern backend systems, web applications, and APIs.
Experience with threat modeling, security design reviews, and vulnerability assessment.
Experience securing JavaScript-based web or mobile applications, preferably using Node.js, React, or React Native.
Strong coding skills and the ability to identify and fix vulnerabilities or build secure solutions alongside engineers.
Familiarity with blockchain technology, particularly Ethereum, decentralized applications, and crypto wallets.
Solid understanding of modern web and mobile security threats, attack vectors, and mitigations.
Strong communication, collaboration, self-direction, and ability to work in a distributed team.
Preferred qualifications include software development experience and deep knowledge of Ethereum, other blockchains, decentralized applications, crypto wallets, and smart contract implementation and security.
Applicants must be able to work with some overlap across EU and US-Pacific time zones; candidates based in France, Italy, or Germany are not considered.

Benefits

Remote-first, global work environment with most time zones supported, subject to EU and US-Pacific overlap.
US base salary range is $130,000-$218,000 annually, excluding bonus, equity, and other benefits; compensation outside the US is determined by location, experience, and skills.
Equal opportunity employer with a commitment to diversity and inclusion.
Employment may require background and identity verification checks.

Salary: $130k - $218k/yr

Consensys

Consensys is a leading blockchain software and Web3 technology company founded by Joseph Lubin. Headquartered in Fort Worth, Texas, the company develops tools, infrastructure, and applications that enable developers, enterprises, and users to build and interact with decentralized technologies.

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