Senior Staff AI Platform Engineer, SentinelOne
$184-253k
+ Restricted Stock Units & Employee Stock Purchase Plan
AI-powered enterprise cybersecurity platform
Be an early applicant
AI-powered enterprise cybersecurity platform
1001+ employees
Be an early applicant
$184-253k
+ Restricted Stock Units & Employee Stock Purchase Plan
1001+ employees
Company mission
To give the advantage to those who secure our future.
Role
Who you are
- We’re looking for people who are relentlessly curious and committed to continuous learning. AI is reshaping every function across our business, and we enable every team member, regardless of role or level, to build fluency in AI tools and concepts
- Those who thrive here actively seek out new solutions, experiment thoughtfully, and apply what they learn to drive better, faster, smarter outcomes
- Hands-on experience building production services that sit in front of multiple consumers such as an API gateway, internal platform, or data platform, with real exposure to authentication/authorization, rate limiting, observability, or audit logging; direct AI and LLM platform experience is a strong plus but not required
- Practical experience with agent orchestration frameworks (LangGraph or equivalent) and calling hosted model providers such as AWS Bedrock or Google Vertex, with a working understanding of how context windows, memory, and tool-calling actually behave in production, not just conceptually
- 8 or more years of professional software engineering experience; with experience building or operating AI and ML infrastructure in a production environment
- Strong Python skills, ideally with FastAPI, and comfort picking up frameworks like pydantic.ai for LLM-powered components; working familiarity with React and TypeScript is a plus
- Exposure to or curiosity about the Model Context Protocol (MCP) and the challenges of governing tool access for agents operating across enterprise systems
- Familiarity with enterprise AI deployments such as Claude Enterprise (Anthropic) or Gemini Enterprise is a plus, including how they are administered and how access and policy controls work
- Solid software engineering fundamentals including clean, tested, production-grade code, strong API design skills, and the ability to give and receive feedback well in code and architecture reviews
- Comfort operating in a fast-moving, still-forming platform environment where you are energized by ambiguity and enjoy turning a rough architecture into working, reliable infrastructure
What the job involves
- As a Senior Staff AI Platform Engineer, you will be tasked with serving as a hands-on builder of SentinelOne's enterprise AI platform, including the Gateway, Harness, and Semantic Layers that every internal AI use case runs on top of
- You will write the production code that governs, observes, secures, and scales AI activity across the company, working closely with the Sr. Director of Enterprise AI Platform Engineering and the rest of the platform team to take the architecture from design into running infrastructure
- Design, build, and operate components of the AI Gateway including centralized identity and authentication/authorization, token budgeting, DLP and content guardrails, multi-model routing and failover, MCP allow-listing, and request-level audit logging
- Build and maintain pieces of the Harness layer including agent orchestration (LangGraph or equivalent), prompt construction and context management, memory and state handling across multi-turn interactions, and model abstraction across providers such as AWS Bedrock and Google Vertex
- Develop and extend production services in Python (FastAPI) and pydantic.ai for LLM-powered components, and contribute to the React/TypeScript surfaces that expose platform capabilities to internal teams
- Implement MCP/tool wiring for internal and SaaS-embedded agents, ensuring every caller regardless of origin passes through the same policy controls
- Contribute to the Claude and Gemini Enterprise plugin framework by building, testing, and hardening role-based skills and agents, and help mature the pipeline for how plugins are authored, evaluated, and deployed
- Instrument the platform for observability including metrics, tracing, and audit trails, and participate in on-call and operational support for platform services
- Write clear technical documentation and participate in architecture and code reviews, holding a high bar for quality, security, and maintainability
- Partner with engineers across Enterprise Data, Enterprise Apps, Product Development, and Infosec to integrate the platform with governed data sources and shared architectural contracts
- Work with the Sr. Director and model evaluation tooling to help close the loop between evaluation results and model selection, prompt tuning, and routing decisions
Our take
Cybercriminals are now leveraging the power of automation to make the current threat landscape too advanced for a lot of traditional antivirus software. SentinelOne is a cybersecurity company that matches this automation with machine learning-focused software designed to help businesses defend against online attacks.
The company has expanded beyond endpoint security into a broader AI-powered cybersecurity platform spanning endpoint, cloud, identity, and IT operations. This gives SentinelOne access to a larger enterprise market, although it also it also places the company in direct competitions with established cybersecurity leaders, including its biggest rival, CrowdStrike.
As cyberattacks become increasingly automated, the company is expanding its capabilities beyond detection to include AI-driven threat response, helping security teams contain attacks more quickly. While it still trails larger rival CrowdStrike in scale, SentinelOne is investing in platform expansion and automation to compete for enterprises looking to consolidate their cybersecurity into a single solution.
Steph
Company Specialist at Welcome to the Jungle
Insights
61% employee growth in 12 months
Company
Funding (last 2 of 9 rounds)
Feb 2021
$100m
LATE VC
Nov 2020
$267m
LATE VC
Total funding: $799.3m
Company benefits
- Medical, dental, and vision coverage
- Employee assistance program
- Gym reimbursement
- Incentive-based challenges
- Mental health and mindfulness
- Unlimited Time Off
- Grandparent Leave
- Volunteer Time Off
- Paid Sick Time
- Paid Holidays
- 16 weeks Gender-Neutral Parental Leave
- Restricted Stock Unit Program
- Flexible Spending Accounts
- Life Insurance
- Short and Long Term Disability Insurance
- Team building activities
- Celebrations and social gatherings
- Community volunteering events
- Global all hands and local town hall events
- 401K
Company HQ
Old Mountain View, Mountain View, CA
Leadership
Tomer Weingarten
(Co-Founder & CEO)Tomer began their career in Software Development at Mckit Systems prior to co-founding dPolls and Carambola Media. They left their position as VP of Products at Toluna in December 2012 to found SentinelOne in January 2013, where they have served as the CEO since.
Sonalee Parekh
(CFO)Prior to joining SentinelOne in 2026, Sonalee was the CFO at Asana and RingCentral. They also held senior roles at Hewlett Packard Enterprise, Jefferies, RBC Capital, Markets, Barclays Capital and Goldman Sachs.
Barry Padgett
(COO & President)Barry joined SentinelOne in 2025 as CGO before briefly serving as the CFO then moving into their current role as COO. Previously they spent 4 years at Amperity as COO and CEO and 1 year at Stripe as CRO.
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