We are looking for a Systems Security Engineer to build and operate security controls at Blacksmith. Your primary focus will be our bare-metal fleet, with responsibility extending to our AWS control plane, application services and the broader organization.

This is a hands-on engineering role. You'll work alongside our systems engineers to harden production systems, strengthen workload isolation, and investigate and remediate security issues. You'll partner with our Security Lead to translate security priorities into engineering work.

Identify, prioritize and remediate security risks across our bare-metal fleet, AWS control plane, application services and the broader organization.

Strengthen tenant isolation, host hardening, network boundaries and access controls across our platform.

Build and operate automated security controls for secure configuration, vulnerability remediation, intrusion detection and response, validating their effectiveness without compromising production reliability or performance.

Investigate and respond to security incidents, driving remediation through to completion.

Partner with engineering and IT to establish secure defaults and practical security standards across systems and workflows, balancing security, reliability and usability.

You’re a good fit if you have

Strong Linux systems experience, with the ability to debug production issues across the kernel, networking and storage stack.

A practical understanding of security fundamentals, including least privilege, defense in depth and threat modeling, and the ability to translate risks into technical solutions.

Experience with virtualization and Linux isolation primitives, such as Firecracker, KVM, namespaces and cgroups, and an understanding of their security boundaries and tradeoffs.

An understanding of storage access controls, tenant isolation and secure data deletion.

Systems Security Engineer

Responsibilities

Qualification

Required

Benefits

Company

Blacksmith

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