Security Engineer, Infrastructure

Fluidstack is building the security infrastructure that underpins one of the most consequential computing platforms in the world: data center infrastructure serving frontier AI customers at scale. As a Security Engineer, Infrastructure, you will be the hands-on technical owner of the systems and pipelines that make our security program run: SIEM and date warehouse architecture, data ingestion and enrichment, security tool engineering, and the infrastructure that ties it all together. You will work directly with every other member of the security team, and other technical teams, to design, build, and operationalize a modern security stack from the ground up - spanning IT, OT, cloud, and bare metal environments - and you will embed security rigor into Fluidstack’s software development lifecycle as we scale our engineering organization. This is not a role for someone who wants to maintain what already exists. It is a role for someone who wants to build what doesn’t yet. Focus

• Play a key role in the design, deployment, and operation of Fluidstack’s security tooling and data infrastructure, including log source onboarding, detection engineering, alert tuning, and pipeline management across IT and OT environments
• Help architect and maintain the security data platform - managing ingestion, normalization, enrichment, and routing of security telemetry from endpoints, network infrastructure, cloud environments, OT/ICS systems, and physical security tooling
• Build and manage integrations between security tools and data systems, including EDR, vulnerability management, SOAR, CASB, and identity platforms
• Embed security controls and review processes into the software development lifecycle, including CI/CD pipeline security, secrets management, artifact integrity, and code review support for security-relevant changes
• Develop and maintain tooling for automated security data collection, normalization, and quality validation across diverse source types
• Collaborate with network, infrastructure, and IT teams to ensure security instrumentation is complete and accurate across all Fluidstack environments, including multi-site data center facilities

• 2+ years designing, implementing, configuring, and/or maintaining security infrastructure and security tooling
• Experience with common cloud and virtualization technologies and capabilities
• Experience with security system architecture

• Competitive total compensation package (salary + equity).
• Retirement or pension plan, in line with local norms.
• Health, dental, and vision insurance.
• Generous PTO policy, in line with local norms.

The base salary range for this position is $170,000 - $220,000 per year, depending on experience, skills, qualifications, and location. This range represents our good faith estimate of the compensation for this role at the time of posting. Total compensation may also include equity in the form of stock options.

We are committed to pay equity and transparency.

Fluidstack is an Equal Employment Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability and protected veterans’ status, or any other characteristic protected by law. Fluidstack will consider for employment qualified applicants with arrest and conviction records pursuant to applicable law.

We exist to make humanity more free. For most of human history, you farmed or you starved. Technology gave people more time for the things they wanted to do, instead of things they had to do. Powerful AI will be the biggest lever for human choice we’ve ever built - but only if models are aligned with what humanity actually wants. There are groups building AI who don’t share these goals. Whoever deploys frontier compute infrastructure fastest will decide whether AI expands human freedom or shrinks it.

We’re singularly focused on delivering 10 to 100s of GWs of compute faster than anyone else, rethinking every layer of the stack. We acquire power, design and build data centers, and operate them - with teams spanning hardware and software. Speed and scale are our key differentiators. Come be a part of building civilization-scale infrastructure for AI.