Senior Site Reliability Engineer, InfraSec

Job Overview

We're seeking a Senior Site Reliability Engineer for our Infrastructure Security (InfraSec) team within Site Reliability Engineering (SRE) at MongoDB. You'll play a crucial role in building security infrastructure and reusable controls to protect MongoDB Atlas across AWS, Azure, and Google Cloud (GCP).

Responsibilities

• Hardening hosts and containerized workloads using Linux security mechanisms and eBPF-based tooling.
• Securing containerized infrastructure across multi-cloud environments via RBAC, network policies, and runtime threat detection.
• Building automated services for Cloud Security Posture Management (CSPM), workload identity, vulnerability management, and access controls.
• Writing production-quality code and leveraging Infrastructure-as-Code (Terraform) to deploy security controls.
• Developing real-time security monitoring, logging, and alerting systems.
• Leading initiatives across their full lifecycle, from threat modeling to long-term production reliability.

Requirements

• 5+ years in SRE, Infrastructure Engineering, or Cloud Security Engineering.
• Strong coding skills in Go, Python, C, C++, or Rust.
• Experience building and operating large-scale distributed systems or cloud platform infrastructure.
• Hands-on experience with Terraform, CloudFormation, or Ansible.
• Demonstrated experience with Linux, Kubernetes, and at least one major cloud provider.

Preferred Qualifications

• Practical experience with eBPF-based security tooling (Cilium, Falco, Tetragon).
• Direct ownership of Cloud Security and Workload Identity platforms.
• Multi-cloud expertise spanning AWS, Azure, and GCP.
• Production exposure to low-level Linux security mechanisms.

Benefits

MongoDB offers a supportive and enriching culture, including employee affinity groups, fertility assistance, and a generous parental leave policy.