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    Senior Infrastructure Security Engineer

    Matter Labs
    United States
    Remote
    Senior
    Full Time
    10 days ago
    infrastructure securitycloud securitydetection and responseincident responseSIEMSOARmacOS securityInfrastructure as CodeblockchainWeb3

    Requirements

    • 5+ years of hands-on infrastructure or detection-and-response security experience
    • Production experience securing a cloud-based identity and collaboration platform at scale beyond default settings
    • Hands-on experience with a modern SIEM and SOAR including writing detections, onboarding log sources, building response playbooks, and tuning to reduce false positives
    • Strong cloud security background including IAM, network controls, workload identity, and organization-level guardrails
    • Practical experience securing a macOS-dominant endpoint fleet including MDM, endpoint hardening baselines, and EDR
    • Familiarity with Infrastructure as Code, secrets management, and security automation
    • Real incident response experience including being on-call for security and leading investigations to conclusion
    • Clear, constructive technical communication across engineering and non-engineering stakeholders

    What You'll Do

    • Own the security configuration of identity and collaboration stack including identity and access policies, third-party app governance, DLP, context-aware access, and admin audit
    • Drive least-privilege and phishing-resistant MFA across the organization
    • Build, tune, and maintain detections for detection and response
    • Design response playbooks for high-signal alerts
    • Onboard new log sources and own the detection-as-code pipeline
    • Reduce mean-time-to-detect and mean-time-to-respond on real incidents
    • Harden cloud footprint, Kubernetes clusters, and CI/CD pipelines
    • Review Infrastructure as Code for security regressions and embed guardrails
    • Partner with DevOps on secrets management and supply-chain controls
    • Own the security posture of the endpoint estate including MDM configuration, baseline hardening, EDR tuning, and endpoint telemetry
    • Lead and participate in security incident investigations end-to-end including containment, forensics, root cause, remediation, and post-mortem
    • Improve runbooks and detections after every incident
    • Run threat models and architecture reviews for new internal systems and infrastructure changes
    • Translate findings into concrete, prioritized work
    • Work alongside Protocol Security, DevOps, IT Ops, and Product Engineering
    • Raise risks constructively, write clearly, and influence without owning every system

    Nice to Have

    • Blockchain / Web3 exposure including familiarity with security considerations of decentralized infrastructure, validator/sequencer operations, key management for on-chain systems, or hot/cold wallet operations
    • Bonus for Ethereum, Solidity, or ZK-related background
    • Compliance framework experience with SOC 2 and ISO 27001 including building or maintaining controls, evidence collection, control design, working with auditors, and mapping technical safeguards to control criteria
    • Comfort translating compliance requirements into real engineering work without letting compliance dictate engineering
    • Kubernetes security including admission control, runtime detection, supply chain
    • Detection engineering as code including Git-based rule management, CI for detections, purple-team validation
    • Experience in lean security teams owning a domain end-to-end rather than a narrow slice

    Benefits

    • Remote-first work model with optional travel to team or industry events
    • Freedom and ownership culture with no time tracking and minimum bureaucracy

    About Matter Labs

    Matter Labs is scaling Ethereum with zero-knowledge proofs to accelerate public blockchain adoption.

    Berlin, Germany
    100 - 250
    Blockchain & Cryptocurrency