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Principal AI Platform Engineer (Lead Architect)

SentinelOne· Engineering
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Hybrid (Hybrid locations as per company policy)Full-timePosted 1w ago

About the role

SentinelOne is seeking a Principal AI Platform Engineer / Principal Software Engineer focusing on AI/ML to lead the development of a unified AI Platform. The role combines technical leadership with platform-building to accelerate AI feature delivery while ensuring security, cost, and quality standards.

Responsibilities

  • Define the technical vision and multi-year roadmap for SentinelOne's AI Platform (model gateway/routing, agent/MCP infrastructure, evaluation pipelines, AI observability, and more) in partnership with engineering leadership.
  • Serve as the tech lead by owning architecture decisions, setting engineering standards, reviewing critical designs, and guiding implementation across the team without people management responsibilities.
  • Support business-critical AI initiatives, partnering with product and engineering leaders to translate business strategy into platform capabilities and clear engineering priorities.
  • Partner with product teams to build customer-facing AI experiences hands-on, then platformize what was built into shared, reusable capabilities.
  • Drive technology selection and build-vs-buy decisions for the platform's core stack, weighing security, cost, scalability, and time-to-value.
  • Mentor senior engineers across the organization and act as a recognized expert on AI infrastructure within and beyond the company.

Qualifications

  • 12+ years of experience building and operating large-scale distributed systems, including several years driving the architecture of platform or infrastructure products used by multiple teams.
  • Hands-on experience taking LLM-based systems to production (e.g., model integration and routing, retrieval or agent architectures, evaluation harnesses, and cost/latency/quality optimization).
  • Strong hands-on coding skills in a mainstream backend language (e.g., Python or Go) and deep experience with Kubernetes and cloud infrastructure.
  • Strong product acumen with experience building world-class customer-facing products, translating customer needs into technical decisions, and engaging business stakeholders.
  • Proven track record as a tech lead of cross-team initiatives with ambiguous requirements, turning vague business goals into a sequenced technical roadmap.

Skills

Required:LLM-based systemsBackend programmingKubernetesCloud infrastructureProduct senseTechnical leadership

Benefits

  • Restricted Stock Units (RSUs)
  • Employee Stock Purchase Plan (ESPP)
  • Competitive leave benefits
  • Gender-neutral parental leave
  • Medical and insurance benefits
  • Pension scheme
  • Employee Assistance Program (EAP)
  • Global home office allowance
  • Mobile phone allowance
  • Wellness benefit
Last updated Oct 22, 2026. Interested? Apply on the company site.
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About SentinelOne

AI-Powered Enterprise Cybersecurity Platform

SentinelOne unifies AI-powered endpoint, cloud, identity, and data protection—enhanced by our Security Data Lake for seamless and efficient cybersecurity.

CybersecurityAI SecurityEndpoint SecurityCloud SecurityAI-SIEMIdentity SecurityEDRXDR
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