Staff Endpoint Software Engineer

Details

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.

Prompt Security's mission is to empower organizations to safely harness the transformative power of Generative AI. As a one-stop security platform, we provide visibility, governance, and real-time protection against all Generative AI concerns, enabling organizations to innovate and prosper in the age of AI without compromising on security.

As a Staff Endpoint Software Engineer, you'll build the lightweight security components that power our Generative AI Security platform - the core sensors and enforcement mechanisms that operate across endpoints, browsers, and production workloads to deliver real-time, adaptive protection. You'll own work end-to-end, engage directly with how customers deploy and rely on our sensors, and diagnose and fix issues on the fly. You'll collaborate with engineers on high-impact GenAI security challenges while growing your expertise and influence on product direction.

Responsibilities

• Build and optimize sensor components for minimal system footprint — high performance, low resource consumption, and maximum reliability across diverse customer environments.
• Evolve Agentic AI capabilities by helping design adaptive policy logic, improving decision engines, and expanding coverage across platforms, grounded in 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 to move the product and business forward.
• Collaborate across security engineering, QA, product, and customer-facing teams to hit customer and business goals.
• Stay current with GenAI and platform security and fold relevant advances into 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 — take ownership of customer problems and diagnose/fix issues in real-world conditions.
• Business and product awareness — interest in roadmap, market, and customers, and the judgment to weigh technical decisions against business impact.
• Accountability and growth mindset.
• Excellent problem-solving skills and attention to detail.
• Proficiency in browser extension development (Chrome, Firefox, etc.) — Advantage.

Benefits

• Restricted Stock Units (RSUs)
• Employee Stock Purchase Plan (ESPP)
• Flexible time off; paid company holidays and paid sick time
• Gender-neutral parental leave; grandparent leave
• Medical, dental, and vision coverage
• 401(k) retirement plan with company match
• Life and disability insurance
• Health and dependent care FSA
• Voluntary benefits (hospital, accident, critical illness)
• Employee Assistance Program (EAP)
• ARAG pre-paid legal
• Nationwide pet insurance
• Cancer Care program
• Global business travel medical insurance
• Home office allowance
• Mobile phone reimbursement
• Wellness coach and wellness/gym reimbursement
• Fertility coverage
• Adoption & surrogacy reimbursement

Compensation & Location Notes

This U.S. role has a base pay range that will vary based on the location of the candidate. Base Salary Range: $156,000—$215,000 USD. SentinelOne participates in the E-Verify Program for all U.S. based roles.