About the Company

Nucleus is a forward-thinking technology company focused on building advanced AI systems supported by robust and secure infrastructure. Operating at the frontier of artificial intelligence, the company develops large-scale systems for research, training, and production workloads, where security, scalability, and reliability are critical.

With a strong emphasis on secure-by-default engineering, Nucleus is dedicated to building resilient platforms that safeguard infrastructure while enabling rapid innovation and deployment of AI technologies.

Introduction

Nucleus is hiring a Software Engineer – Infrastructure Security to strengthen the security posture of its cloud and on-premise environments. This role focuses on building and maintaining secure infrastructure systems that power AI workloads across the organization.

You will work closely with platform and engineering teams to design security controls, improve system resilience, and ensure safe deployment practices while balancing security with development velocity.

Key Responsibilities

Technical Development

Harden cloud and on-premise environments supporting AI model training and inference workloads.
Build and integrate security controls into deployment pipelines and infrastructure provisioning systems.
Enhance host, container, and workload security across infrastructure platforms.
Develop tools and automation for enforcing security policies and managing infrastructure posture.

Execution & Problem Solving

Identify and reduce attack surfaces across infrastructure systems.
Implement secure-by-default patterns across services and environments.
Monitor, detect, and remediate security vulnerabilities and risks.
Balance security best practices with performance and developer productivity.

Growth & Collaboration

Collaborate with platform, DevOps, and engineering teams to strengthen infrastructure security.
Contribute to evolving security standards and best practices across the organization.
Continuously learn and adapt to emerging threats and advancements in infrastructure security.
Drive a culture of security awareness and operational excellence.

Required Qualifications

Experience in infrastructure engineering, security engineering, SRE, or platform engineering.
Strong knowledge of cloud security, Linux systems, and infrastructure fundamentals.
Familiarity with containerization technologies and deployment pipelines.
Understanding of identity and access management (IAM) systems.
Experience implementing secure infrastructure patterns and preventative controls.
Strong problem-solving skills with a practical approach to security challenges.
Ability to balance security requirements with development speed and scalability.

Preferred Qualifications

Experience with large-scale distributed systems or AI/ML infrastructure.
Familiarity with cloud platforms such as AWS, Azure, or GCP.
Knowledge of container security and runtime protection mechanisms.
Experience building automation tools for security monitoring and remediation.

Why Join Us / Benefits

At Nucleus, you will play a critical role in securing the infrastructure behind cutting-edge AI systems. This is an opportunity to work on high-impact challenges where your contributions directly influence the safety and reliability of advanced technologies.

Work at the forefront of AI and infrastructure innovation.
Opportunity to solve complex, high-impact security challenges.
Collaborative environment with strong engineering and platform teams.
Direct impact on building secure and scalable AI systems.