Senior Software Engineer, Security at Crusoe (San Francisco, CA / United States)Senior Software Engineer, Security

Crusoe is on a mission to accelerate the abundance of energy and intelligence. As the only vertically integrated AI infrastructure company built from the ground up, we own and operate each layer of the stack — from electrons to tokens — to power the world's most ambitious AI workloads. When you join Crusoe, you join a team that is building the future, faster.

We're in the midst of the greatest industrial revolution of our time. The demand for AI compute is boundless, and power is a bottleneck. We're solving that — with an energy-first approach that makes AI infrastructure better for the world and faster for the people innovating with AI.

We're looking for problem-solving, opportunity-finding teammates with a sense of urgency, who believe in the scale of our ambition and thrive on a path not fully paved — people who want to grow their careers alongside a team of experts across energy, manufacturing, data center construction, and cloud services.

If you want to do the most meaningful work of your career, help our customers and partners advance their AI strategies, and be part of a high-performing team that believes in each other, come build with us at Crusoe.

About the Role: As a Senior Security Software Engineer at Crusoe, you will design, build, and deploy scalable services, platforms, and tools that provide the foundational technical capabilities for product security controls, PKI, and Secrets Management. The core charter of this role is to implement automation that eliminates manual steps involved in understanding, remediating, and preventing security risks across the enterprise. This work sits at the intersection of production engineering systems and complex security automation, translating technical security requirements into highly scalable, reliable, production-grade infrastructure. You will take end-to-end ownership of your technical systems, spanning detailed software design, development, thorough testing, and robust deployment via automated integration pipelines (CI/CD), ensuring our security systems are highly available and operate effectively at scale.

What You'll Be Working On:

• Build & Deploy: Implement and maintain scalable, robust distributed software components and security controls that scale within Crusoe's CI/CD pipelines.
• Platform Security: Engineering and maintaining robust PKI and Secrets Management solutions to secure infrastructure, identities, and sensitive configurations at scale.
• Data & Control Pipelines: Develop control integrations and data pipelines to collect, normalize, and manage security telemetry and risk posture across identity systems (IAM), log streams, and vulnerability scanners.
• Metrics & Dashboards: Build metrics engines, real-time dashboards, and automated insights pipelines that provide continuous visibility into technical risk posture and emerging infrastructure risks.
• Cross-Functional Collaboration: Partner directly with platform engineering and security domain experts to understand technical requirements and deliver durable, operational solutions under full engineering ownership.
• Engineering Excellence: Champion high-quality code standards within the team through rigorous code reviews, automated testing, comprehensive technical documentation, and proactive operational monitoring.
• On This Team, You Will
• Tackle complex security and compliance puzzles at cutting-edge scale within cloud and distributed infrastructure.
• Collaborate with a brilliant, multidisciplinary team of engineers who are redefining security assurance for modern infrastructure.
• Have the freedom, autonomy, and responsibility to innovate, experiment, and contribute to how Crusoe establishes its core security assurance pipelines.

What You'll Bring to the Team:

• Education: Bachelor’s degree in Computer Science, Information Security, a related technical field, or equivalent practical job experience.
• Software Engineering: 5+ years of professional software development experience, with a solid foundation and hands-on, production experience in languages like Go.
• Orchestration & Containers: 3+ years of hands-on experience deploying, managing, and troubleshooting Kubernetes clusters in a production environment.
• System Experience: Solid experience building high-QPS, critical distributed software applications or microservices.
• Cloud Infrastructure: Strong hands-on experience operating within major public cloud provider environments (such as AWS or GCP).
• CI/CD & IaC: Active, hands-on familiarity with modern continuous integration/continuous deployment pipelines and Infrastructure-as-Code (IaC) tools.
• Data Architecture: Strong experience contributing to technical architectures involving structured data flows, event-driven architectures, access control models, and third-party API integrations.

Bonus Points

• Familiarity with foundational security and compliance control models (e.g., SOC 2, ISO 27001).
• Experience developing tools or data pipelines utilizing cloud-native streaming and event infrastructure.
• Strong debugging and systems-level troubleshooting skills in public cloud networks.
• Experience engineering and maintaining foundational platform security tools, including PKI infrastructure and Secrets Managers (e.g., HashiCorp Vault).

Benefits:

• Competitive compensation and equity packages
• Restricted Stock Units
• Paid time off, paid holidays & leave of absence programs
• Comprehensive health, dental & vision insurance
• Employer contributions to HSA account
• Paid parental leave
• Paid life insurance, short-term and long-term disability
• Professional development & tuition reimbursement
• Mental health & wellness support
• Commuter benefits (parking & transit)
• Cell phone stipend
• 401(k) Retirement plan with company match up to 4% of salary
• Volunteer time off
• Global travel insurance & emergency assistance
• Daily meals allowance
• Additional perks & programs specific to location