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InfraSec Platform Engineer (SRE / Cloud Security)

MongoDB· InfraSec
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Hybrid (United States)$151k - $297kPosted 1w ago

About the role

InfraSec operates on a preventative, enabling model by integrating security into platform runtime, CI/CD, and IaC workflows. This role focuses on hardening, secure cloud infrastructure across multi-cloud environments, and building automated security controls and monitoring at Atlas scale.

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 Cloud Security Posture Management (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

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 personally championing initiatives from conception to delivery
  • 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)

Skills

Required:Go (Golang)PythonCC++Terraform
Nice to have:Rust

Benefits

  • equity
  • participation in the employee stock purchase program
  • flexible paid time off
  • 20 weeks fully-paid gender-neutral parental leave
  • fertility and adoption assistance
  • 401(k) plan
  • mental health counseling
  • transgender-inclusive health insurance coverage
  • health benefits offerings
Last updated Oct 15, 2026. Interested? Apply on the company site.
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