Head of Infrastructure Security

At Matter Labs, we believe freedom drives progress and prosperity. We don’t see ourselves as a company, but as a team aligned around a single mission: to advance personal freedom for all (see ZK Credo). To achieve this goal, we’re building zkSync -a credibly neutral, fully open source technology stack and network on top of Ethereum, which is owned and governed by its community. We use advanced cryptography called zero-knowledge proofs to scale Ethereum infinitely without compromising on security or decentralization. With a world-class team, a community of over 1M supporters across Twitter and Discord, and hundreds of millions of dollars in funding, we have the resources to achieve our mission. The Role: Head of Infrastructure Security We are looking for a deeply experienced and driven security leader to join as Head of Infrastructure Security - a role that bridges traditional infrastructure security with protocol-level cryptographic assurance. You will own and drive security across both our cloud-native and on-chain systems, working closely with protocol engineers, DevOps, and product teams to ensure we remain secure at every layer. You’ll also be responsible for building and mentoring a world-class security team, and ensuring strong, scalable security practices across the organization. What You’ll Be Doing Lead security strategy and execution across both infrastructure and protocol layers. Drive secure implementation verification of cryptographic protocols, including hands-on review and testing. Partner closely with engineering, DevOps, and protocol teams to improve security posture. Conduct deep threat modeling, design reviews, and architecture assessments. Build and manage a high-performing security team. Oversee vulnerability management, detection, and incident response. Set and maintain robust engineering and security processes. Educate and mentor the broader team on secure development practices. What We’re Looking For A deep passion for advancing privacy, freedom, and security. Strong fundamentals in infrastructure and protocol security. Experience leading or managing technical security teams. Proven ability to work across cloud infrastructure, distributed systems, and cryptographic protocol layers. Hands-on experience with threat modeling, penetration testing, intrusion detection, and forensics. Familiarity with languages such as Rust, C++, or Golang - Rust is preferred, but not required. Comfortable working in a fast-paced, open-source, decentralised tech environment. Fluent written and spoken English. Bonus Points For: Experience working in blockchain or zero-knowledge proof-based systems. Familiarity with Solidity and secure smart contract development. Track record of publishing research or public vulnerability reports. Working at Matter Labs At Matter Labs, you have the freedom to work how you want, when you want, and from where you want. All positions are 100% remote (with optional travel to team or industry events). We operate in lean, high-impact teams with minimal bureaucracy and no time tracking - only results matter. You’ll have everything you need to learn, grow, and be productive. We believe anyone who shares our mission can thrive here - regardless of background, gender, or location. That’s why we foster a culture of respect, autonomy, and ownership. What We Offer Competitive compensation Equity and token package 100% coverage for health, dental, and vision insurance 16 weeks of parental leave Flexible paid time off Company closure weeks 1–2x per year $2000 USD work equipment stipend $300 USD monthly co-working allowance $500 USD learning & development stipend 401k plan (US only) #J-18808-Ljbffr