Staff Security Engineer Network Security
Nscale is a London-based, full-stack AI cloud and infrastructure company that provides GPU compute, managed AI services, orchestration software, data centers, and power infrastructure for AI training, fine-tuning, and inference.
Maintainer signals as of 9/25/2026
Funding history
About Nscale
Nscale builds and operates vertically integrated AI infrastructure spanning software, GPU compute, networking, storage, purpose-built data centers, and power. Its active cloud platform offers self-service inference endpoints, fine-tuning, managed Kubernetes and Slurm, virtual machines, and GPU clusters.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will define network-security reference architectures, trust boundaries, segmentation patterns, access controls, and telemetry requirements. You will review site designs before implementation, establish standards for providers, build reusable deployment materials, and partner across infrastructure, facilities, IT, platform engineering, security operations, and physical security.
Requirements
- 7+ years of experience in network security, data-centre networking, infrastructure security, or enterprise network engineering
- Hands-on experience with routing, switching, segmentation, firewalls, internet edge, WAN, remote access, wireless, and network troubleshooting
- Experience designing or reviewing secure networks across data centres, colocation sites, offices, production environments, or distributed infrastructure
- Experience securing OT, BMS, industrial, facilities, or operational networks
- Knowledge of zero trust, identity-aware access, least privilege, and explicit authorization
- Experience building network-security standards, design-review processes, and deployment gates
- Ability to work with infrastructure, facilities, IT, platform engineering, security operations, physical security, and third-party providers
- Exposure to AI infrastructure, GPU clusters, HPC, sovereign infrastructure, or hyperscale data centres
Responsibilities
- Define network-security reference architecture across data-centre network domains
- Establish network trust boundaries and required flows
- Translate network diagrams into controls, monitoring requirements, and risk decisions
- Design segmentation patterns, firewall principles, routing controls, and network-access controls
- Define network-access-control requirements by trust zone and operational risk
- Specify local safety-critical telemetry-path requirements
- Review data-centre, colocation, office, and site network designs
- Assess urgent designs and identify required approvals or compensating controls
- Set security standards for third-party providers and partners
- Build reusable design checklists, diagrams, and decision records
- Define network telemetry, logging, and detection requirements
- Partner with Identity and Security Data on authentication and telemetry
Benefits
- Bonus and equity eligibility
- Medical insurance
- Dental insurance
- Vision insurance
- Flexible paid time off
- Parental leave
- Retirement plan participation