### **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.

**Role**

We are looking for an applied cryptographer or a cybersecurity professional with love for applied cryptography, and with experience in auditing and breaking cryptographic protocols to join our security team. The goal of the team is to secure a large codebase including:

- proving system backend library [[Barretenberg](https://github.com/AztecProtocol/barretenberg)]
- Zero Knowledge Proofs DSL [[Noir](https://github.com/noir-lang/noir)]
- our [[node software](https://github.com/AztecProtocol/aztec-packages/tree/master/yarn-project/aztec-node)]
- our [[Private Execution Environment](https://github.com/AztecProtocol/aztec-packages/tree/master/yarn-project/pxe)] and much more

You will need to find potential security issues, write novel tooling and apply existing mechanisms to detect bugs, assist internal software teams and external contractors with audits.

**Experience**

- Security experience in a software eng context (≥ 3 years)
- Industry (or large-project academic) programming experience in a low-level language (e.g., Rust or C++)
- Familiarity with applied cryptography and discrete mathematics (fields, elliptic curves)
- Excellent written and verbal communication skills on technical topics
- Participation in CTFs in a cryptography role a plus
- Compiler development experience a huge plus
- Web Security experience a huge plus

### **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.

Protocol 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.

### **Role focus:**

We're looking for entrepreneurial thinkers that are interested in tackling new problems working across the entire codebase to:

- Understand the full system architecture end to end
- Prioritize and document technical debt and unnecessary complexity within the system
- Implement solutions and improvements for key stakeholders
- Refactor code, improving readability, documentation, maintainability and unit testing
- Influence and enhance current engineering bar
- Ensure we're using the most up-to-date tooling and development workflows for maximum developer efficiency

In particular, some of the tasks you could be working on include:

- Improving the developer experience of writing Noir through extending its LSP (among other tools).
- Improving the testing framework for Noir programs and performing exploratory work on testing smart contracts written in Noir.
- Implementing new language features
- Extending the Javascript tooling for working with Noir and identifying bottlenecks for proving in the browser.
- Implementing optimized cryptographic primitives in Noir

### **Qualifications:**

- Bachelor's degree in related technical field
- 3+ years solid engineering experience (ideally in a web3/blockchain setting)
- Fluent in Rust/Typescript (3+ years experience)
- Previous compiler experience (very desirable but not required)
- Able to provide clear and constructive feedback on less senior engineers’ PR’s, mentoring where necessary

### **Nice-to-have experience:**

- Located in the UK or can operate in Greenwich Mean Time Zone
- Familiarity with other ZK languages and associated tooling (for inspiration)
- Familiarity with current Ethereum tooling (for inspiration)
- Passion for the web3 space
- C++ experience

### **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.

Software Engineer (Noir Generalist)

### **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.

### **The Role:**

### Aztec is gearing up to launch a sophisticated privacy-preserving blockchain on Ethereum. To achieve this, our engineers need support making our code run through first continuous integration, then test networks, and finally peer-to-peer software that anyone in the world can run. We need you! We seek engineers versed in devops and system architecture that are enthusiastic about building production systems with unique and challenging constraints

- Design and build the foundation for monitoring a decentralized private network.
- Develop metrics and monitoring of our hosted services.
- Automate infrastructure provisioning and configuration.
- Manage AWS services and resources ensuring cost effectiveness.
- Collaborate with development teams to ensure they have the best development/CI experience.
- Maintain a CI/CD pipeline for 30 engineers working across C++, Rust, Noir, Solidity, and Typescript.
- Monitor system issues and create strategies for their detection.

### **Responsibilities:**

- CI platforms such Github Actions, CircleCI.
- AWS cloud services, EC2, ECS, ECR, etc.
- Expert in Docker and creating fast efficient builds and containers. Earthly is a nice-to-have.
- Terraform for defining IAC.
- Prometheus and Grafana for metrics and monitoring, and working with codebases to extract required information.
- Toolchain experience: C++ (clang, gcc, cmake). Rust. Solidity. NPM/Yarn.
- Demonstrable experience in enabling an engineering team of our size have a robust and efficient development experience.
- Self starter. Able to clearly identify areas to prioritise to deliver most value.

### **Qualifications:**

- Bachelor's or Master's degree in Computer Science, Information Technology, or a related field.
- 4+ years of experience in site reliability engineering or DevOps roles, preferably in the cryptocurrency or financial services industry.
- Strong communication and collaboration skills, with the ability to work effectively in a fast-paced, dynamic environment.
- Can operate in Greenwich Mean Time Zone

### **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

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