Horizen Labs Senior Cryptographic Engineer

We are looking for a talented and motivated engineer who will contribute to building the cryptographic infrastructure of our Web 3.0-enabled blockchain ecosystem. You will be involved in the design and implementation of blockchain scaling solutions, primarily based on zero-knowledge cryptography, with the aim of dramatically reducing the costs that blockchain operators incur when deploying their products. Our international team works in a stimulating and innovative environment, where technical expertise and experience contribute to the development of cutting-edge blockchain technology. You will be joining a small, deeply driven team of highly technical minds in a culture of openness, pragmatism, and ownership of challenging problems that span software engineering, systems design, cryptography, and computing.

What You’ll Own

• Design and implementation of blockchain-based cryptographic solutions leveraging modern cryptography (ZK, MPC, FHE).
• Assume technical responsibility of novel systems while identifying areas for innovative research and development.
• Writing reusable, testable, and efficient code with a focus on best practices and security.
• Help shape the future of the company where you will be intimately involved in the strategic decision making process and immediately see the impact of your contributions.
• Attend conferences and find opportunities in the on-chain ecosystem.

Skills and Qualifications

• 5+ years of experience in software engineering.
• Be passionate about secure, reliable, well-documented and fast software.
• Flexible to work within an agile environment.
• Experience in implementing cryptographic constructions (down to the low-level mathematics) and familiarity with various common attacks.
• Deep understanding of applied cryptography and passion for creating effective and pragmatic cryptographic solutions to be integrated in complex systems and/or to conceive innovative products solving real world problems.
• Propose new meaningful approaches based on novel cryptography research available in academia.
• Experience in technical writing and documentation.
• Clear communication and articulation of abstract ideas.
• Enjoy guiding more junior developers and sharing your expertise.
• Work gracefully with cross-functional teams within engineering, marketing, and other support teams to provide the best-in-class solutions.
• Autonomous, self motivated, and low ego.

Preferred Qualifications

• Experience with system languages (C, C++, Go) and/or strongly typed programming (OCaml, Haskell, Rust).
• Theoretical and practical experience in state-of-the-art zero knowledge solutions such as Plonk (Plonky2, Plonky3, Halo2), STARKs, zk(E)VMs, recursive proof composition.
• Theoretical and practical experience in blockchain-based systems, with a particular focus on Ethereum and/or other EVM-based solutions.
• Experience with optimization of low-level mathematical operations, down to assembly level.
• Any experience with GPU/FPGA programming is welcomed.

In compliance with New York City's Pay Transparency Act, the annual base salary range for this position should the applicant be based in NYC is USD $140,000.00 to USD $170,000.00. The range displayed reflects the minimum and maximum target for new hire salaries for the position should it be based in NYC. Our salary ranges are determined by numerous factors, including, but not limited to, role, level, experience, and location.