MTS Lead, Technology & Security Engineering
Reflection· Security
New York, NY, San Francisco, CA$0 + equityFull-timePosted 3mo ago
About the role
Lead the architecture and operation of Reflection's security engineering foundation across corporate, multi-cloud research infrastructure, and GPU training capacity, owning the full security stack from end-user compute to security-as-code and detection engineering.
Responsibilities
- Design and manage a highly resilient corporate device fleet spanning Linux, macOS, Windows and specialized hardware (NVIDIA GPU workstations)
- Shift the fleet toward intelligent posture verification and cryptographic device binding while preserving workflows
- Secure diverse local toolchains and developer environments without breaking researcher workflows
- Architect cloud-native security controls across multi-cloud environments.
- Establish IAM governance, network segmentation, and isolation boundaries for training infrastructure and model assets
- Partner with infrastructure and research teams to scale security controls with GPU capacity
- Implement continuous, context-aware authorization using modern mesh networks and proxies (e.g., Tailscale, Cloudflare One)
- Enforce hardware-backed authentication (WebAuthn/FIDO2) across corporate and production planes
- Eliminate standing and persistent access in favor of just-in-time, verifiable authorization
- Ensure 100% infrastructure, endpoint configurations, IAM policies, and cloud environments are declared in code (Terraform/Pulumi)
- Eliminate configuration drift via automated CI/CD validation and continuous compliance checks
- Build repeatable, auditable deployment pipelines that prove security posture
- Build telemetry pipelines to ingest high-fidelity logs into a cloud-native data lake for detection at scale
- Detect post-exploitation techniques, lateral movement, and living-off-the-land attacks
- Tune detection coverage against an assumed-breach threat model with rapid time-to-detect and containment
- Support SOC 2, ISO 27001, FedRAMP, ISO 22237, ISO 22301, NIST CSF, customer audits, and enterprise security reviews
- Lead vendor risk assessments, procurement security reviews, and security-related legal contract negotiations
- Own front-line defenses including physical and data center security operations
Qualifications
- 20+ years of deep engineering experience at high-valuation companies or defense-grade environments
- Track record of building and operating security engineering functions at scale
- Experience supporting SOC 2, ISO 27001, FedRAMP, ISO 22237, ISO 22301, NIST CSF, customer audits, and enterprise security reviews
- Experience leading vendor risk, procurement security reviews, and legal contract negotiations
- Experience with front-line defenses for an AI company, including physical security and data center security operations
- Deep familiarity with Linux and macOS internals, including securing NVIDIA GPUs without breaking developer environments
- Expert-level knowledge of public cloud architectures, IAM governance at scale, and Kubernetes/container isolation primitives
- Understanding of cloud and infrastructure security, Kubernetes/container security, zero-trust architectures, security operations at scale, IAM, detection/response technologies, and security automation
Skills
Required:End-user compute securityCloud security and IAM at scaleSecurity automation and SaCSecurity operations at scale
Nice to have:Vendor risk and legal contract negotiations
Benefits
- Top-tier compensation: Salary and equity
- Stock options
- Health & wellness: medical, dental, vision, life, wellness allowance
- Meals: Lunch and dinner in office
- Life & family: 22 weeks paid parental leave
- Vacation: Unlimited PTO in the U.S. and 30 days in the U.K
- Sponsorship support: visa sponsorship and immigration pathways
- Team building: regular off-sites, happy hours, and team celebrations
Last updated Oct 1, 2026. Interested? Apply on the company site.
About Reflection
Building frontier open intelligence
Building frontier open intelligence.
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