Application Security Engineer
Posted 2025-08-23
Remote, USA
Full Time
Immediate Start
<div class="content-intro"><h4><strong>About Aztec</strong></h4>
<p>At Aztec, our goal is to add privacy to Ethereum.</p>
<p>In the current public blockchain paradigm, users and entities unknowingly broadcast data in the public, compromising privacy and security to get trustlessness.</p>
<p>Not only are unencrypted blockchains inherently privacy-exposing, they require significant redundancy to compute and verify the legitimacy of transactions.</p>
<p>Implementing scalable encryption in a public blockchain paradigm requires cutting-edge math and engineering. Thankfully, our team of scientists and engineers invented Plonk, the industry-standard zkSNARK, and Noir, the universal language of zero knowledge.</p>
<p>Now, we’re building a first of its kind Layer 2 with private smart contracts. This requires new cryptographic primitives, a zero-knowledge DSL for writing contracts, a privacy-friendly execution environment, a carefully designed set of circuits that prove the validity of the chain to L1, a decentralized block-building and proving mechanism, and a top-tier user and developer experience. And it’s now time to bring it to market.</p>
<p>We’ve raised $125 million from industry-leading investors including a16z crypto, Paradigm, Variant, Consensys, and a_capital, and we’re growing quickly.</p></div><p>We are seeking a Senior Application Security Engineer with a strong background in applied cryptography to join our security team. In this role, you will be instrumental in securing our extensive codebase, which includes:<a href="https://job-boards.eu.greenhouse.io/aztec/jobs/4258022101?utm_source=chatgpt.com">Greenhouse</a></p>
<ul>
<li>The proving system backend library<a href="https://github.com/AztecProtocol/barretenberg"> Barretenberg</a></li>
<li>The zero-knowledge proofs DSL<a href="https://github.com/AztecProtocol/noir"> Noir</a></li>
<li>Our<a href="https://github.com/AztecProtocol/aztec-node"> node software</a></li>
<li>Our<a href="https://github.com/AztecProtocol/aztec3-packages"> Private Execution Environment</a></li>
<li>And more<a href="https://job-boards.eu.greenhouse.io/aztec/jobs/4258022101?utm_source=chatgpt.com">The GitLab Handbook+5Greenhouse+5Remotely+5</a></li>
</ul>
<p>Your responsibilities will include identifying potential security issues, developing and applying tools to detect bugs, and assisting both internal software teams and external contractors with security audits.</p>
<h3><strong>Responsibilities</strong></h3>
<ul>
<li>Conduct comprehensive security assessments of our applications and infrastructure.</li>
<li>Develop and implement security tools and processes to detect and mitigate vulnerabilities.</li>
<li>Collaborate with development teams to integrate security best practices into the software development lifecycle.</li>
<li>Assist in the design and implementation of secure coding standards and practices.</li>
<li>Lead and participate in internal and external security audits.</li>
<li>Stay abreast of the latest security threats and technologies to ensure our systems remain secure.</li>
</ul>
<h3><strong>Qualifications</strong></h3>
<ul>
<li>Minimum 3 years of experience in application security within a software engineering context.</li>
<li>Proficiency in low-level programming languages such as Rust or C++.</li>
<li>Strong understanding of applied cryptography and discrete mathematics, including fields and elliptic curves.</li>
<li>Excellent written and verbal communication skills on technical topics.</li>
<li>Experience with compiler development and web security is a significant plus.</li>
</ul>
<p><strong>Participation in Capture The Flag (CTF) competitions in a cryptography role is advantageous.<a href="https://builtin.com/job/senior-software-engineer/2254342?utm_source=chatgpt.com">Built In<br></a></strong></p>
<h4><strong>What we offer:</strong></h4>
<ul>
<li>Flexible and remote work environment</li>
<li>25 days holiday + bank holidays annually</li>
<li>Additional benefits include health insurance, retirement plans, and opportunities for professional development.</li>
<li>Quarterly offsite travel for collaboration </li>
<li>Events and conference budget</li>
<li>An opportunity to work at the cutting edge of blockchain and FinTech with a world class cryptography and engineering team</li>
</ul><div class="content-conclusion"><p>Aztec Labs is an equal opportunity employer and we value creativity, diversity, and intellectual curiosity. If you're passionate about leveraging your creative talents to make a real-world impact, and if you want to be part of a team that's shaping the future of digital privacy, then we would love to hear from you.</p></div>
<p>At Aztec, our goal is to add privacy to Ethereum.</p>
<p>In the current public blockchain paradigm, users and entities unknowingly broadcast data in the public, compromising privacy and security to get trustlessness.</p>
<p>Not only are unencrypted blockchains inherently privacy-exposing, they require significant redundancy to compute and verify the legitimacy of transactions.</p>
<p>Implementing scalable encryption in a public blockchain paradigm requires cutting-edge math and engineering. Thankfully, our team of scientists and engineers invented Plonk, the industry-standard zkSNARK, and Noir, the universal language of zero knowledge.</p>
<p>Now, we’re building a first of its kind Layer 2 with private smart contracts. This requires new cryptographic primitives, a zero-knowledge DSL for writing contracts, a privacy-friendly execution environment, a carefully designed set of circuits that prove the validity of the chain to L1, a decentralized block-building and proving mechanism, and a top-tier user and developer experience. And it’s now time to bring it to market.</p>
<p>We’ve raised $125 million from industry-leading investors including a16z crypto, Paradigm, Variant, Consensys, and a_capital, and we’re growing quickly.</p></div><p>We are seeking a Senior Application Security Engineer with a strong background in applied cryptography to join our security team. In this role, you will be instrumental in securing our extensive codebase, which includes:<a href="https://job-boards.eu.greenhouse.io/aztec/jobs/4258022101?utm_source=chatgpt.com">Greenhouse</a></p>
<ul>
<li>The proving system backend library<a href="https://github.com/AztecProtocol/barretenberg"> Barretenberg</a></li>
<li>The zero-knowledge proofs DSL<a href="https://github.com/AztecProtocol/noir"> Noir</a></li>
<li>Our<a href="https://github.com/AztecProtocol/aztec-node"> node software</a></li>
<li>Our<a href="https://github.com/AztecProtocol/aztec3-packages"> Private Execution Environment</a></li>
<li>And more<a href="https://job-boards.eu.greenhouse.io/aztec/jobs/4258022101?utm_source=chatgpt.com">The GitLab Handbook+5Greenhouse+5Remotely+5</a></li>
</ul>
<p>Your responsibilities will include identifying potential security issues, developing and applying tools to detect bugs, and assisting both internal software teams and external contractors with security audits.</p>
<h3><strong>Responsibilities</strong></h3>
<ul>
<li>Conduct comprehensive security assessments of our applications and infrastructure.</li>
<li>Develop and implement security tools and processes to detect and mitigate vulnerabilities.</li>
<li>Collaborate with development teams to integrate security best practices into the software development lifecycle.</li>
<li>Assist in the design and implementation of secure coding standards and practices.</li>
<li>Lead and participate in internal and external security audits.</li>
<li>Stay abreast of the latest security threats and technologies to ensure our systems remain secure.</li>
</ul>
<h3><strong>Qualifications</strong></h3>
<ul>
<li>Minimum 3 years of experience in application security within a software engineering context.</li>
<li>Proficiency in low-level programming languages such as Rust or C++.</li>
<li>Strong understanding of applied cryptography and discrete mathematics, including fields and elliptic curves.</li>
<li>Excellent written and verbal communication skills on technical topics.</li>
<li>Experience with compiler development and web security is a significant plus.</li>
</ul>
<p><strong>Participation in Capture The Flag (CTF) competitions in a cryptography role is advantageous.<a href="https://builtin.com/job/senior-software-engineer/2254342?utm_source=chatgpt.com">Built In<br></a></strong></p>
<h4><strong>What we offer:</strong></h4>
<ul>
<li>Flexible and remote work environment</li>
<li>25 days holiday + bank holidays annually</li>
<li>Additional benefits include health insurance, retirement plans, and opportunities for professional development.</li>
<li>Quarterly offsite travel for collaboration </li>
<li>Events and conference budget</li>
<li>An opportunity to work at the cutting edge of blockchain and FinTech with a world class cryptography and engineering team</li>
</ul><div class="content-conclusion"><p>Aztec Labs is an equal opportunity employer and we value creativity, diversity, and intellectual curiosity. If you're passionate about leveraging your creative talents to make a real-world impact, and if you want to be part of a team that's shaping the future of digital privacy, then we would love to hear from you.</p></div>