Senior SRE: InfraSec Security for Multi-Cloud

MongoDB Inc.; Denver (CO); On-site; USD 126,000 - 248,000; Full time

Benefits offered by this job

Equity

Employee stock purchase program

Flexible paid time off

20 weeks parental leave

Fertility and adoption assistance

401(k) plan

Mental health counseling

Trans-inclusive health insurance

Job summary

MongoDB Inc. is seeking an experienced Infrastructure Engineer (InfraSec) in the SRE organization to Harden hosts, secure multi-cloud workloads, and build CSPM and security tooling for Atlas scale.

You’ll write code, use Terraform and related tooling, and own end-to-end security lifecycle across AWS, Azure, and GCP. Joining our InfraSec team means contributing to threat modeling, architectural design, and production reliability, with a focus on robust security posture and automation.

Qualifications

• 5+ years in SRE, Infrastructure Engineering, or Cloud Security Engineering.
• Strong coding skills in Go (Golang), 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

SRE experience

Go/Python/C/C++/Rust

Distributed systems

Terraform/CloudFormation/Ansible

Linux/Kubernetes + cloud

Tools

Terraform

CloudFormation

Ansible

Job description

MongoDB Inc. is seeking an experienced Infrastructure Engineer (InfraSec) in the SRE organization to Harden hosts, secure multi-cloud workloads, and build CSPM and security tooling for Atlas scale.

You’ll write code, use Terraform and related tooling, and own end-to-end security lifecycle across AWS, Azure, and GCP. Joining our InfraSec team means contributing to threat modeling, architectural design, and production reliability, with a focus on robust security posture and automation.