Senior Site Reliability Engineer — Cloud Security & CSPM

MongoDB Inc.; Oregon; Hybrid; USD 151,000 - 297,000; Full time

Benefits offered by this job

Equity

Employee stock purchase program

Flexible paid time off

Parental leave (20 weeks)

Fertility and adoption assistance

401(k) plan

Mental health counseling

Transgender-inclusive health insurance

Health benefits

Job summary

MongoDB is seeking an experienced InfraSec engineer to harden hosts and containerized workloads, implement RBAC and network policies, and secure multi-cloud infrastructure across AWS, Azure, and GCP. You’ll write production-grade code and use Terraform to deploy security controls as code.

Join a team building real-time security monitoring, threat modeling, and production reliability at Atlas scale. You’ll help shape architecture from design through rollout, collaborating across engineering and

Qualifications

• 10+ years in SRE, Infrastructure Engineering, or Cloud Security Engineering.
• A track record of operating at Staff or Principal scope: defining technical direction, resolving cross-team ambiguity, and championing initiatives from conception to delivery.
• Strong coding skills in Go, Python, C, C++, or Rust.
• Proven track record of building and operating large-scale distributed systems or cloud platform infrastructure.
• Hands-on experience using Terraform, CloudFormation, or Ansible for automated infrastructure provisioning.
• Demonstrated experience owning infrastructure in Linux, Kubernetes, and at least one major cloud provider (AWS, GCP, or Azure).

Responsibilities

• Harden hosts and containerized workloads using Linux security mechanisms (AppArmor, SELinux, seccomp, cgroups) and eBPF-based tooling (Cilium, Tetragon).
• Secure containerized infrastructure across multi-cloud environments via RBAC, network policies, admission controls (Gatekeeper), and runtime threat detection.
• Build and manage automated services for CSPM, workload identity, vulnerability management, and access controls across AWS, Azure, and GCP.
• Write production-quality code and leverage Infrastructure-as-Code (Terraform) to version, test, and deploy security controls as code.
• Build real-time security monitoring, logging, and alerting systems to detect anomalies and track security posture at Atlas scale.
• Lead initiatives across their full lifecycle; from threat modeling and architectural design to implementation, rollout, and long-term production reliability.

Skills

Go

Python

C

C++

Rust

Terraform

CloudFormation

Ansible

Linux

Kubernetes

AWS

GCP

Azure

Tools

Terraform

CloudFormation

Ansible

Job description

MongoDB is seeking an experienced InfraSec engineer to harden hosts and containerized workloads, implement RBAC and network policies, and secure multi-cloud infrastructure across AWS, Azure, and GCP. You’ll write production-grade code and use Terraform to deploy security controls as code.

Join a team building real-time security monitoring, threat modeling, and production reliability at Atlas scale. You’ll help shape architecture from design through rollout, collaborating across engineering and