Current openings at Aztec

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

The Role We’re looking for a DevOps Engineer with deep Linux expertise and a passion for building developer-centric tooling. You’ll work closely with our CTO and engineering teams to enhance our internal infrastructure, CI systems, and productivity pipelines. This is a hands-on, high-impact role - ideal for someone who thrives on owning the tools that engineers rely on every day. Please note this role is based out of our London office. What You’ll Do Take ownership of Aztec’s custom CI system and internal build tools. Enhance and build CI dashboards to improve observability of engineering workflows. Harden CI infrastructure using least privilege principles and robust sandboxing. Implement productivity enhancements across C++, Rust, Solidity, and TypeScript build systems. Investigate and resolve low-level bugs related to Linux processes, signals, memory, and IPC. Collaborate face-to-face during your ramp-up phase in our London office. Optionally grow into a leadership role as the internal infrastructure team expands. 💡 Explore our CI system in action: and the code here. About You You might be a great fit if you: Prefer scripting custom Bash over fighting YAML in legacy CI systems. Experience with cgroups, kernel namespaces, virtual memory, /proc, and tracing syscalls. Extensive experience with terraform and AWS cloud infrastructure. Know Docker intimately, from minimizing image sizes to how it leverages kernel features. Have experience maintaining complex software stacks and CI systems at scale. Are comfortable with debugging process groups, signals, and build failures at the OS layer. Take pride in building secure, reliable, and fast developer infrastructure. What We Offer: HQ in London. Competitive salary + equity/token options. 25 days annual leave + bank holidays. Health, dental, and retirement benefits (based on location). Quarterly offsites for team collaboration and bonding. Conference and learning budget for continual professional development. A chance to work on truly cutting-edge zero-knowledge infrastructure with some of the best minds in the field.