Infrastructure Engineer

About Prelude

Prelude Security is building the category leader in Runtime Memory Protection — an endpoint product that detects and blocks in-memory execution, memory zero-day exploitation, and ransomware execution entirely from user mode. We are a small team of security researchers and software developers working to reinvent the way we protect endpoints in a world where threats are complex, emergent, and accelerating. Backed by Sequoia Capital, Insight Partners, and other leading investors, we are building an advanced security solution to detect in-memory attacks on endpoints.

We are a small team of security researchers and software developers working to reinvent the way we protect endpoints in a world where threats are complex, emergent, and accelerating. Backed by Sequoia Capital, Insight Partners, and other leading investors, we are building an advanced security solution to detect in-memory attacks on endpoints, which is written in Rust and runs exclusively in user mode. It leverages advances in modern edge computing architecture, hardware-level telemetry, and a graph-based understanding of the Windows operating system to catch adversaries the moment that they compromise an endpoint. Rather than endlessly attempting to predict what an adversary might do, trapping adversaries at this universal and unavoidable chokepoint that lies at the center of their operations allows us to focus all of our efforts on what they must do, regardless of their sophistication or how much creativity (or AI) they apply to their tactics.

Our goal is simple: to detect out-of-context execution in a way that remains entirely outside the adversary’s control. Out-of-context execution occurs when an attacker coerces an application to run code paths that were not intended by the original application. This includes in-memory execution techniques such as local and remote injection, exploitation that results in the execution of dynamic code, and fileless malware.

Role

As an Infrastructure Engineer at Prelude, you will build the foundation upon which our endpoint protection platform is built, deployed, and scaled. You will be responsible for designing, building, and maintaining the cloud architecture and CI/CD frameworks that empower our engineering and research teams to ship performant, stable, and resilient software with high velocity. Combining principles from Site Reliability Engineering (SRE) and DevOps, you will own the entire lifecycle of our services from architectural design and infrastructure provisioning to deployment, monitoring, and incident response. This role is critical to ensuring our platform is reliable, scalable, and secure for our customers.

Given the confidential nature of our work, we require an NDA to be signed after an introductory call if there is mutual interest in moving forward.

Responsibilities

• Design, build, and maintain the core infrastructure that powers Prelude’s endpoint protection platform.

• Develop and manage our CI/CD pipelines to automate the building, testing, and deployment of our software.

• Scale our systems sustainably through automation, leveraging Infrastructure as Code (IaC) principles.

• Implement and manage robust monitoring, logging, and alerting systems to ensure service health, availability, and performance.

• Collaborate closely with software engineers and security researchers to improve the reliability, deployability, and operational aspects of their code.

• Practice sustainable incident response and conduct blameless postmortems to drive continuous improvement.

• Serve as a subject matter expert on cloud architecture, system scalability, and operational excellence.

Skills and Experience

• Demonstrable experience building and managing infrastructure in a major cloud environment (e.g., AWS, GCP, Azure).

• Strong proficiency with Infrastructure as Code (IaC) tools like CloudFormation, Ansible, or Terraform.

• Experience with containerization and orchestration technologies

• Solid understanding of CI/CD principles and experience with tools such as GitHub Actions.

• Proficiency in one or more programming or scripting languages, such as Python or Rust.

• Experience implementing and using modern observability tools for monitoring, logging, and tracing (e.g., Prometheus, Grafana, Datadog, ELK stack).

• Strong understanding of networking and security best practices in cloud environments.

Nice to Haves

• Experience working in a fast-paced, adaptive startup environment.

• Prior experience building and managing infrastructure for a security-focused product or in a high-compliance environment.

• Experience with distributed systems.

• Systems programming experience, ideally using Rust.

Working at Prelude

Prelude is a fully remote team across the US & Canada, built on trust, autonomy, and excellence. We empower our team to take ownership, move with purpose, and continuously improve. Our culture values top performers who align with our mission and embrace high standards. We offer generous healthcare, flexible PTO, and home-office support, ensuring our team has the freedom and resources to thrive. While we move fast, we prioritize quality, collaboration, and remain committed to building impactful security solutions with precision.