Senior SRE InfraSec - Cloud Security Platform Engineer

MongoDB Inc.; Dublin; Hybrid; EUR 100,000 - 140,000; Full time

Job summary

MongoDB is seeking an experienced Site Reliability/Infrastructure Security Engineer based in Dublin for a hybrid working model. You will harden Linux hosts and container workloads, implement CSPM and identity controls, and automate security tooling across AWS, Azure, and GCP.

You’ll write code, manage IaC, and help ensure Atlas-scale security posture while collaborating with cross-functional teams. Ideal candidates bring 5+ years of SRE or cloud security experience, strong Go/Python/C/C++/Rust

Qualifications

• 5+ years in SRE, infrastructure engineering, or cloud security engineering.
• Strong coding skills in Go, Python, C, C++, or Rust.
• Proven ability to build and operate large-scale distributed cloud infrastructure.
• Hands-on with Terraform, CloudFormation, or Ansible for automation.
• Experience owning Linux, Kubernetes, and at least one major cloud (AWS/GCP/Azure).

Responsibilities

• Harden hosts and container workloads using Linux security and eBPF tooling.
• Secure containerized infrastructure across multi-clouds with RBAC and network policies.
• Develop automated CSPM, workload identity, vulnerability management, and access controls.
• Write production-grade code and manage IaC to deploy security controls.
• Build real-time security monitoring, logging, and Atlas-scale posture tracking.
• Lead end-to-end initiatives from threat modeling to production reliability.

Skills

SRE/InfraSec experience

Go

Python

C/C++/Rust

Kubernetes

Cloud platforms (AWS/GCP/Azure)

Tools

Terraform

CloudFormation

Ansible

Job description

MongoDB is seeking an experienced Site Reliability/Infrastructure Security Engineer based in Dublin for a hybrid working model. You will harden Linux hosts and container workloads, implement CSPM and identity controls, and automate security tooling across AWS, Azure, and GCP.

You’ll write code, manage IaC, and help ensure Atlas-scale security posture while collaborating with cross-functional teams. Ideal candidates bring 5+ years of SRE or cloud security experience, strong Go/Python/C/C++/Rust