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Principal AI Platform Engineer (Lead Architect)

SentinelOne
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Hybrid (CZ/SK)Full-timePosted 2mo ago

About the role

SentinelOne is seeking a Principal AI Platform Engineer / Principal Software Engineer focusing on AI/ML to lead the design and execution of a company-wide AI Platform. This founding technical leadership role blends product and platform responsibilities to enable reusable AI capabilities across teams, driving architecture, roadmap, and implementation for secure, scalable AI infrastructure.

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).
  • 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 by translating business strategy into platform capabilities and engineering priorities.
  • Partner with product teams to build customer-facing AI experiences, then platformize them into reusable capabilities.
  • Drive technology selection and build-vs-buy decisions for the platform's core stack, considering security, cost, scalability, and time-to-value.
  • Mentor senior engineers and act as an expert on AI infrastructure within and beyond the company.

Qualifications

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

Skills

Required:AI Platform ArchitectureDistributed SystemsLLM ProductionizationBackend ProgrammingCloud & KubernetesProduct & Stakeholder Engagement

Benefits

  • Restricted Stock Units (RSUs)
  • Employee Stock Purchase Plan (ESPP)
  • Performance-based bonus
  • Flexible time off (5 weeks PTO)
  • Paid wellness days and fully paid short-term sick/nursing leave
  • Gender-neutral parental leave
  • Private medical care benefit
  • Life and disability insurance
  • Pension Insurance contribution
  • Global business travel medical insurance
  • Employee Assistance Program (EAP)
  • Global home office allowance
  • Meal allowance
  • Hybrid work in Prague (Karlin), Brno (Clubco) or remote in CZ/SK (Prague office requirement 2 days/week)
  • Wellbeing allowance
  • MultiSport benefit program
  • Wellness Coach app
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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