Senior Software Engineer (SRE), Infrastructure Security
About The Position
The Infrastructure Security (InfraSec) team sits within Site Reliability Engineering (SRE) in the CTO organization. We are an engineering team dedicated to building the security infrastructure, primitives, and reusable controls that protect MongoDB Atlas across AWS, Azure, and Google Cloud (GCP). InfraSec operates on a preventative, enabling model: rather than acting as a manual approval gatekeeper or compliance auditor, we develop automated guardrails and platform capabilities. We integrate security directly into the platform runtime, CI/CD, and Infrastructure-as-Code (IaC) workflows so engineering teams can operate securely at scale without friction.
Requirements
- 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)
Nice To Haves
- 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 (seccomp, AppArmor, SELinux, cgroups)
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
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
- access to transgender-inclusive health insurance coverage
- health benefits offerings
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
