Full-Time

Operating Systems Security Engineer

Operating Systems

Anthropic

Anthropic

5,001-10,000 employees

Develops reliable, interpretable AI systems

Compensation Overview

$320k - $405k/yr

H1B Sponsorship Available

Seattle, WA, USA + 2 more

More locations: San Francisco, CA, USA | New York, NY, USA

Hybrid

Staff must work from an office at least 25% of the time; some roles may require more.

Bachelor's

Category
Cybersecurity (1)
Required Skills
Operating Systems
Docker
Vulnerability Analysis
C/C++
Linux/Unix

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Requirements
  • Deep knowledge of Linux internals, including kernel subsystems and security frameworks such as SELinux, AppArmor, and seccomp.
  • Experience with kernel hardening techniques and exploit mitigation.
  • Strong programming skills in C and systems programming languages.
  • Experience with eBPF for security monitoring and enforcement.
  • Understanding of virtualization and containerization security.
  • A track record of identifying and fixing OS-level security vulnerabilities.
  • Experience with security-focused Linux distributions.
  • A bachelor's degree or an equivalent combination of education, training, and experience.
  • A relevant field of study demonstrated through coursework, training, or professional experience.
Responsibilities
  • Design and implement hardened OS configurations for AI workloads across diverse hardware platforms.
  • Minimize attack surfaces by removing unnecessary components from kernelspace and userspace.
  • Develop kernel security policies using SELinux, AppArmor, custom Linux Security Modules, and runtime enforcement mechanisms.
  • Implement and maintain full-disk encryption solutions for diverse storage systems.
  • Build security infrastructure for AI systems, research environments, and production services.
  • Create OS-level attestation and integrity monitoring systems.
  • Apply security patches, develop patches for custom kernel modules, and create kernel hardening configurations.
  • Design secure boot processes and trusted execution environments.
  • Work with container teams to ensure proper workload isolation at the kernel level.
  • Design privilege separation and mandatory access control policies.
  • Implement secure update mechanisms for OS components.
  • Build tooling for security configuration management and compliance verification.
  • Serve as a subject matter expert for OS security questions and designs.
Desired Qualifications
  • At least 5 years of experience in operating systems security or kernel development.
  • Kernel development experience or contributions to the Linux kernel.
  • Experience with real-time or embedded operating systems.
  • Knowledge of hardware security features and their OS integration.
  • Experience with secure boot technologies.
  • Experience with confidential computing and memory encryption technologies such as SEV, TDX, and SGX.
  • Background in vulnerability research, exploit development, or fuzzing.
  • Experience with formal methods for OS verification.
  • Knowledge of hardware security features and their OS integration, including TPM, HSM, and secure enclaves.

Anthropic focuses on AI research to build reliable, interpretable, and steerable AI systems. Its main product, Claude, is an AI assistant designed to handle tasks at any scale for clients across industries, delivered through deployment and licensing along with specialized AI R&D services. Claude works by combining natural language processing, human feedback, reinforcement learning, and interpretability techniques to produce a capable, controllable AI assistant that can assist with a wide range of tasks. The company differentiates itself from competitors by prioritizing safety, transparency, and controllability—emphasizing reliability, interpretability of model behavior, and user-controlled steerability in its AI systems. Anthropic’s goal is to make AI systems that people can trust and efficiently use to improve operations and decision-making across sectors.

Company Size

5,001-10,000

Company Stage

Debt Financing

Total Funding

$182.8B

Headquarters

San Francisco, California

Founded

2021

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Simplify Jobs

Simplify's Take

What believers are saying

  • Reuters reported Anthropic's annualized revenue run-rate exceeded $65 billion by August 2026.
  • August 26 and 31, 2026, Anthropic signed $45 billion Nscale and $35 billion Lambda deals.
  • July 27, 2026, Cognizant expanded Claude across enterprise platforms and certified workforce programs.

What critics are saying

  • July 20, 2026, Anthropic paid $1.5 billion for authors' copyright claims.
  • January 28, 2026, Universal, Concord, and ABKCO sued Anthropic over 20,000 songs.
  • Late-2026 compute commitments to Nvidia-backed Lambda and Nscale deepen vendor lock-in before IPO.

What makes Anthropic unique

  • September 1, 2026, Claude Fable 5.1 added 1M-token context for enterprise workflows.
  • Claude Mythos 5.1 uses the same model with stricter safety controls for vetted users.
  • Anthropic positions safety as product design, pairing Claude with Enterprise Frontier Safeguards on AWS.

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Benefits

Flexible Work Hours

Paid Vacation

Parental Leave

Hybrid Work Options

Company Equity

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

4%

2 year growth

2%
Yahoo Finance
Sep 9th, 2026
Broadcom eyes $40B Anthropic opportunity as Google chip risks weigh on stock

Broadcom could capture a $40 billion opportunity from Anthropic's growing compute needs, according to Macquarie analyst Arthur Lai. This comes as concerns mount over Google developing more chips internally, potentially threatening Broadcom's custom silicon business. The stock has fallen approximately 24% from its all-time high. However, Lai suggests many concerns may already be priced in, creating an attractive entry point. In April, Anthropic partnered with Google and Broadcom to secure next-generation TPU capacity for training its Claude AI models. Broadcom's AI semiconductor revenue surged 221% year-over-year to $16.7 billion in fiscal Q3 2026. Management projects AI semiconductor revenue could reach $115 billion in fiscal 2027 and potentially $230 billion in fiscal 2028. The Anthropic partnership could provide crucial revenue visibility whilst strengthening Broadcom's position in custom AI silicon and networking.

PR Newswire
Sep 8th, 2026
Black Duck joins Anthropic's Project Glasswing to secure critical software with AI

Black Duck has joined Anthropic's Project Glasswing, an industry initiative aimed at securing critical software infrastructure using advanced AI for defensive cybersecurity. The application security company will apply Mythos, Anthropic's AI system, across its full security portfolio. This will combine AI-accelerated vulnerability discovery with remediation workflows, risk-based prioritisation, and compliance-driven governance. "AI is transforming the economics and speed of vulnerability discovery and exploit development," said Dipto Chakravarty, Black Duck's Chief Product & Technology Officer. He explained that pairing Mythos with Black Duck's existing capabilities will enable faster risk reduction whilst maintaining the transparency and auditability required by enterprise security teams. Black Duck specialises in application security, combining deterministic analysis with AI reasoning to identify and fix security issues in code written by developers, generated by AI, or assembled from open source.

Yahoo Finance
Sep 8th, 2026
Goldman Sachs and Morgan Stanley push for OpenAI and Anthropic investment-grade ratings despite $20.9B losses

Goldman Sachs and Morgan Stanley have asked major credit rating agencies to grant investment-grade status to OpenAI and Anthropic upon going public, despite neither company turning a profit, the Financial Times reported. OpenAI posted a $20.9 billion operating loss on $13.1 billion revenue in 2025. Anthropic doesn't expect to break even until 2028, with OpenAI targeting 2030. The investment-grade designation would allow pension funds and insurers to buy their bonds. It would also terminate Nvidia's guarantee of up to $105 billion in lease obligations for OpenAI's Ohio campus. Rating analysts currently describe both labs as speculative-grade and loss-making. When SpaceX received investment-grade ratings after its June IPO, its bonds traded near junk pricing within days. Anthropic could list in late September, whilst OpenAI targets 2027.

Yahoo Finance
Sep 8th, 2026
Interactive Brokers earns interest on $182B of clients' idle cash — will Anthropic's IPO drain it?

Interactive Brokers held $182.4 billion in uninvested client cash at the end of June, up 27% year over year, and this figure grew to $185.6 billion by August. The automated global broker earns interest on this cash by investing it in short-term US government securities whilst paying clients a rate half a percentage point below the federal funds rate. Net interest income rose 23% year over year to $1.06 billion in the second quarter, representing more than half of total net revenues of $1.9 billion. The growth came from larger balances rather than margins, which actually narrowed to 1.93% from 2.07%. Anthropic's potential IPO, rumoured to arrive soon with a possible $2 trillion valuation, could provide clients with an opportunity to deploy some of this cash.

Yahoo Finance
Sep 7th, 2026
Anthropic signs $35B cloud deal with Lambda at Nvidia-leased Texas data centre

Anthropic has reportedly secured a $35 billion cloud deal with Lambda for 350 MW of capacity at Hut 8's Beacon Point campus in Texas, marking its ninth major compute corridor. The arrangement highlights Nvidia's dual role as both GPU supplier and data centre landlord, allowing it to extract value at multiple levels. The deal supports Anthropic's $65 billion annualised revenue run rate but deepens its reliance on Nvidia's ecosystem. Anthropic has diversified across nine corridors, including commitments to AWS (5GW), Google/Broadcom (5GW), Microsoft/Nvidia ($30 billion), Fluidstack ($50 billion), Nscale ($45 billion), Volta ($10 billion), AMD ($5 billion), and SpaceX (300MW). This infrastructure strategy reflects a shift where GPU suppliers increasingly control both hardware and physical environments, positioning themselves as compute landlords.