Principal AI Platform Engineer (Lead Architect) w Polska

Our Purpose

At SentinelOne, we are driven by a clear purpose: to give the advantage to those who secure our future. As AI reshapes how organizations build, operate, and innovate, the responsibility to protect them becomes more critical than ever. When you join SentinelOne, your work helps protect global enterprises, critical infrastructure, and the technologies shaping tomorrow.

About Us

SentinelOne is a company at the intersection of AI and security, pioneering a new operating model for cybersecurity. Our AI-native platform unifies protection across endpoint, cloud, identity, data, and AI systems to deliver autonomous detection and response with clarity and speed. Our teams are builders, problem-solvers, and innovators committed to shaping the future of security.

Role Overview

SentinelOne is building a new AI Platform team whose mission is to accelerate AI feature delivery across the company while ensuring every AI feature meets our security, cost, and quality standards. We are looking for a Principal AI Platform Engineer / Principal Software Engineer focusing on AI/ML, to be the founding technical leader of this team: you will partner directly with the team's engineering leader to define the technical vision and roadmap for the platform that every AI-powered capability at SentinelOne will build on. This role is as much about product as it is about platform: you should be able to build AI experiences customers love, and then platformize what was built into capabilities that every team can reuse.

Primary 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.

Why SentinelOne?

AI is redefining how the world operates and rewriting the rules of security in real time, and SentinelOne was built for this moment. We invest in our Sentinels with comprehensive, competitive benefits designed to support you and your family:

Equity & Rewards

• Restricted Stock Units (RSUs)
• Employee Stock Purchase Plan (ESPP)

Time Off & Wellbeing

• Competitive leave benefits
• Gender-neutral parental leave

Insurance & Financial Security

• Medical and insurance benefits
• Pension scheme
• Employee Assistance Program (EAP)

Work Perks & Flexibility

• Global home office allowance
• Mobile phone allowance

Wellness & Lifestyle

• Wellness benefit

What Skills and Knowledge Will You Bring?

• 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.