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Infrastructure Security Engineer

Modal· Engineering
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New York$150k - $270kFull-timePosted 6mo ago

About the role

Design and secure the core systems that power Modal’s platform, focusing on building security into infrastructure—from container isolation and orchestration to identity and secrets management in a multi-tenant, cloud-native environment.

Responsibilities

  • Platform & Runtime Security: Design and improve isolation mechanisms for multi-tenant workloads (containers, sandboxing, execution environments); Strengthen boundaries between customers, workloads, and internal systems; Identify and mitigate risks in distributed, dynamic compute environments
  • Container & Orchestration Security: Secure and harden containerized workloads and orchestration systems (e.g., Kubernetes or similar); Improve workload isolation, scheduling boundaries, and runtime protections; Evaluate tradeoffs in multi-tenant execution models
  • Identity & Access Management: Design and improve authentication and authorization systems across services; Implement strong service-to-service identity and least-privilege access patterns; Improve access controls across infrastructure and internal systems
  • Secrets & Key Management: Build and maintain systems for securely managing secrets, tokens, and credentials; Improve rotation, auditing, and access controls; Reduce secret sprawl and integrate secure patterns into developer workflows
  • Cloud & Infrastructure Security: Secure cloud environments across providers (AWS, GCP, etc.) with a focus on consistency and portability; Improve network boundaries, service segmentation, and access controls; Embed security into infrastructure-as-code and deployment systems
  • Engineering Partnership: Work closely with product and infrastructure teams to design secure systems from the ground up; Review architecture and code for security risks and provide actionable guidance; Identify patterns in risks and drive cross-cutting improvements

Qualifications

  • Experience securing cloud-native infrastructure and distributed systems in production
  • Background in infrastructure, backend, or security engineering
  • Experience working in multi-tenant or high-scale environments
  • Strong understanding of containerization and orchestration systems (e.g., Kubernetes or similar)
  • Experience designing or securing isolation mechanisms in multi-tenant systems
  • Solid understanding of authentication, authorization, and service identity models
  • Experience with secrets management and secure handling of credentials
  • Strong foundation in networking concepts (segmentation, service communication, access boundaries)
  • Builder mentality, you design and implement, not just review
  • Pragmatic approach to security in fast-moving environments
  • Comfortable working deeply with engineers and influencing system design

Skills

Required:Platform security designContainerization & orchestrationIdentity & access managementSecrets managementNetworking fundamentals
Nice to have:Infrastructure-as-code security

Benefits

  • Not specified in the description.
Last updated Oct 21, 2026. Interested? Apply on the company site.
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About Modal

High-performance AI infrastructure

Bring your own code, and run CPU, GPU, and data-intensive compute at scale. The serverless platform for AI and data teams.

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