Application Security Engineer

About Aztec

At Aztec, our goal is to add privacy to Ethereum.

In the current public blockchain paradigm, users and entities unknowingly broadcast data in the public, compromising privacy and security to get trustlessness.

Not only are unencrypted blockchains inherently privacy-exposing, they require significant redundancy to compute and verify the legitimacy of transactions.

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.

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.

We’ve raised $125 million from industry-leading investors including a16z crypto, Paradigm, Variant, Consensys, and a_capital, and we’re growing quickly.

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:​Greenhouse

• The proving system backend library Barretenberg
• The zero-knowledge proofs DSL Noir
• Our node software
• Our Private Execution Environment
• And more​The GitLab Handbook+5Greenhouse+5Remotely+5

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.​

Responsibilities

• Conduct comprehensive security assessments of our applications and infrastructure.
• Develop and implement security tools and processes to detect and mitigate vulnerabilities.
• Collaborate with development teams to integrate security best practices into the software development lifecycle.
• Assist in the design and implementation of secure coding standards and practices.
• Lead and participate in internal and external security audits.
• Stay abreast of the latest security threats and technologies to ensure our systems remain secure.​

Qualifications

• Minimum 3 years of experience in application security within a software engineering context.
• Proficiency in low-level programming languages such as Rust or C++.
• Strong understanding of applied cryptography and discrete mathematics, including fields and elliptic curves.
• Excellent written and verbal communication skills on technical topics.
• Experience with compiler development and web security is a significant plus.

Participation in Capture The Flag (CTF) competitions in a cryptography role is advantageous.​Built In

What we offer:

• Flexible and remote work environment
• 25 days holiday + bank holidays annually
• Additional benefits include health insurance, retirement plans, and opportunities for professional development.
• Quarterly offsite travel for collaboration 
• Events and conference budget
• An opportunity to work at the cutting edge of blockchain and FinTech with a world class cryptography and engineering team

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.