Staff Endpoint Software Engineer, Prompt (Python & OS Internals)

SentinelOne is a cybersecurity company providing an AI-native platform for protection across endpoints, cloud, identity, data, and AI systems. The Staff Endpoint Software Engineer will build and optimize endpoint, browser, and workload security components for Generative AI protection, while owning customer-facing technical issues and contributing to product and roadmap decisions.

Responsibilities:

• Build and optimize sensor components for minimal system footprint - high performance, low resource consumption, and maximum reliability across diverse customer environments
• Evolve our Agentic AI capabilities by helping design adaptive policy logic, improving decision engines, and expanding coverage across platforms - grounded in real customer use cases and roadmap priorities
• Build endpoint and browser security components and integrate them into the platform for real-time GenAI threat detection and data protection (prompt injection, sensitive-data leakage, shadow AI, and more)
• Own customer-facing technical problems end-to-end - investigate production issues, reproduce and fix them quickly under real-world pressure, and follow through until the customer is unblocked
• Translate business and roadmap context into engineering decisions - understand what customers need, where the product is heading, and why, so your technical choices move the business forward
• Collaborate across security engineering, QA, product, and customer-facing teams to hit customer and business goals - not just ship code
• Stay current with GenAI and platform security and fold relevant advances into our sensors, agents, and extensions

Requirements:

• At least 6 years of experience in Python, Node.js, or a comparable language
• Experience with macOS and Windows Endpoint Security
• Proficiency in OS architecture and internals
• Strong customer orientation - you take ownership of customer problems and can diagnose and fix issues on the fly in real-world conditions
• Business and product awareness - genuine interest in the roadmap, the market, and the customers we serve, and the judgment to weigh technical decisions against business impact
• Accountability and growth mindset - you own your outcomes, hold yourself to a high bar, and actively invest in your own and the team's growth
• Excellent problem-solving skills and attention to detail
• Proficiency in browser extension development (Chrome, Firefox, etc.) - Advantage