Senior Infrastructure Security Engineer

Job Overview

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. 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.

Key Responsibilities

• Infrastructure & Cloud Security Design and implement secure infrastructure; including hardening cloud environments, containers, and CI/CD pipelines.
• Detection & Response Readiness Help build detection and monitoring systems (e.g., SIEM, alerting pipelines) to ensure early threat detection and effective incident response.
• Secure Systems Design Collaborate with engineers and DevOps to identify security risks in architecture reviews, system upgrades, and deployment plans.
• Infrastructure as Code (IaC) Contribute to the design and review of Terraform, Ansible, or similar IaC, ensuring security is embedded from the ground up.
• Security Reviews & Remediation Participate in threat modeling, internal audits, and hands-on vulnerability remediation across our stack.
• Cross-Team Collaboration Work closely with Protocol Security, DevOps, and Product Engineering to align on shared security goals and ensure coverage across the full lifecycle.
• Optional: On-chain Infra Anomaly Detection Help implement tools to detect unusual infrastructure-level activity from on-chain signals (e.g., misuse of credentials or suspicious deployment patterns).

Required Qualifications

• Strong Infrastructure Security Background Hands-on experience securing cloud-native environments (e.g., AWS, GCP), Kubernetes, CI/CD pipelines, and internal systems.
• Deep Technical Fluency Practical knowledge of threat modeling, incident response, vulnerability management, and systems architecture.
• IaC & DevSecOps Mindset Familiarity with Infrastructure as Code (Terraform, etc.), secrets management, and security automation tooling.
• Bias for Action A self-starter who’s comfortable with ambiguity and can drive security work through delivery — not just assessment.
• Collaborative Communicator Able to partner across teams, raise risks constructively, and translate complex security concepts to technical and non-technical stakeholders.
• Web3 Awareness (Nice to Have) Familiarity with the security considerations of decentralized infrastructure and open-source ecosystems. Bonus for knowledge of Ethereum, Solidity, or ZK-related tech.

About 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.