Staff + Software Security Engineer, Secure Frameworks

VulnU; New York, Northern (NY, KY); Hybrid; USD 150,000 - 210,000; Full time

Job summary

Anthropic is seeking a senior security engineer to design, build and operate foundational security infrastructures across our fleet. You will own cryptographic frameworks, mTLS, and authorization systems, guiding architecture from threat modeling to production.

You'll partner with product, research, and infra teams to deploy least-privilege access controls and a zero-trust gateway, mentor engineers, and help grow our security engineering culture across the company.

Qualifications

• 8+ years of software engineering experience building security-relevant systems in production.
• Strong programming skills in Go, Rust or Python.
• Deep understanding of authentication and authorization systems: OAuth 2.0 / OIDC, JWTs, service-to-service auth.
• Hands-on experience with PKI, X.509, mTLS and workload identity.
• Experience shipping and operating high-reliability services on Kubernetes across cloud and on-prem environments.
• Ability to own cryptographic frameworks and libraries.

Responsibilities

• Design, build and run security foundations used across Anthropic's fleet, from threat model through production, on-call and adoption.
• Build and operate the zero-trust access gateway that fronts Anthropic's internal services.
• Design and roll out authorization frameworks so services enforce least privilege consistently.
• Mentor engineers, contribute to hiring, and grow security engineering culture across Anthropic.
• Partner with product, research, infrastructure, and other security teams to ensure frameworks integrate smoothly with lower-layer security controls.

Skills

Go

Rust

Python

Education

Bachelor’s degree

Tools

Kubernetes

PKI

Job description

About AnthropicAnthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems.About the teamSecure Frameworks is the team in Anthropic's Security Engineering org that builds shared security libraries and frameworks the rest of the company builds on. We collaborate closely with teams and leaders across Anthropic to own critical security foundations, including workload identity and authorization, cryptographic frameworks, and the centralized access proxy that secures traffic to internal applications.Our mission is to make the secure thing easy and the easy thing secure by helping Anthropic engineers get secure behaviour by default and preventing entire classes of vulnerabilities through careful design. We own what we ship, help customers adopt better security practices and at times we work embedded directly in research, infrastructure or product teams.About the roleYou will design, build and run security foundations used across Anthropic's fleet, from threat model through production, on-call and adoption. Much of the work is greenfield: our infrastructure is growing quickly and the timelines are compressed, so you will help define the architecture rather than inherit it. Depending on your strengths you will focus on one or two of the areas below and contribute across the rest.Build critical security foundations including cryptographic frameworks, mTLS infrastructure, secure serialization, and authorization systems, designed to prevent entire classes of vulnerabilitiesPartner with product, research, infrastructure, and other security teams to ensure frameworks integrate smoothly with lower-layer security controlsScope, design and build security services and libraries end-to-end, maintain them in production, and drive through ambiguous technical problems with minimal oversightBuild and operate the zero-trust access gateway that fronts Anthropic's internal servicesDesign and roll out authorization frameworks so services enforce least privilege consistently instead of each inventing its own access controlsOwn cryptographic frameworks and librariesMentor engineers, contribute to hiring, and grow security engineering culture across AnthropicMinimum qualifications8+ years of software engineering experience building security-relevant systems in production, including leading complex initiatives independentlyStrong programming skills in Go, Rust or PythonDeep understanding of authentication and authorization systems: OAuth 2.0 / OIDC, JWTs, service-to-service auth, policy-based access controlHands-on experience with PKI, X.509, mTLS and workload identityWorking knowledge of applied cryptography: choosing and composing primitives correctly, key management, and the ways libraries fail in practiceExperience shipping and operating high-reliability services on Kubernetes across cloud and on-prem environments, including being on call for themA track record of bringing clarity and ownership to ambiguous technical problems and driving them to resolution across teamsA strong sense of developer experienceClear communication across all levels of the organizationPassion for AI safety and the role security engineering plays in building trustworthy AI systemsPreferred qualificationsBuilt security frameworks or libraries adopted across an engineering organization, and done the work to drive that adoptionBuilt or operated a zero-trust / BeyondCorp-style access gateway or identity-aware proxyMigrated a fleet to mTLS at scale, including certificate issuance and staged enforcementMaintained or contributed to open-source cryptographic librariesDesigned authorization systems using policy languages or relationship-based modelsFamiliarity with ML infrastructure (training, inference serving)The annual compensation range for this role is listed below.For sales roles, the range provided is the role’s On Target Earnings (\"OTE\") range, meaning that the range includes both the sales commissions/sales bonuses target and annual base salary for the role.Annual Salary:$32,000 $485,000 USDLogisticsMinimum education: Bachelor’s degree or an equivalent combination of education, training, and/or experienceRequired field of study: A field relevant to the role as demonstrated through coursework, training, or professional experienceMinimum years of experience: Years of experience required will correlate with the internal job level requirements for the positionLocation-based hybrid policy: Currently, we expect all staff to be in one of our offices at least 25% of the time. However, some roles may require more time in our offices.Visa sponsorship: We do sponsor visas! However, we aren't able to successfully sponsor visas for every role and every candidate. But if we make you an offer, we will make every reasonable effort to get you a visa, and we retain an immigration lawyer to help with this.We encourage you to apply even if you do not believe you meet every single qualification. Not all strong candidates will meet every single qualification as listed. Research shows that people who identify as being from underrepresented groups are more prone to experiencing imposter syndrome and doubting the strength of their candidacy, so we urge you not to exclude yourself prematurely and to submit an application if you're interested in this work. We think AI systems like the ones we're building have enormous social and ethical implications. We think this makes representation even more important, and we strive to include a range of diverse perspectives on our team.Your safety matters to us. To protect yourself from potential scams, remember that Anthropic recruiters only contact you from @anthropic.com email addresses. In some cases, we may partner with vetted recruiting agencies who will identify themselves as working on behalf of Anthropic. Be cautious of emails from other domains. Legitimate Anthropic recruiters will never ask for money, fees, or banking information before your first day. If you're ever unsure about a communication, don't click any links—visit anthropic.com/careers directly for confirmed position openings.How we're differentWe believe that the highest-impact AI research will be big science. At Anthropic we work as a single cohesive team on just a few large-scale research efforts. And we value impact — advancing our long-term goals of steerable, trustworthy AI — rather than work on smaller and more specific puzzles. We view AI research as an empirical science, which has as much in common with physics and biology as with traditional efforts in computer science. We're an extremely collaborative group, and we host frequent research discussions to ensure that we are pursuing the highest-impact work at any given time. As such, we greatly value communication skills.The easiest way to understand our research directions is to read our recent research. This research continues many of the directions our team worked on prior to Anthropic, including: GPT-3, Circuit-Based Interpretability, Multimodal Neurons, Scaling Laws, AI Compute, Concrete Problems in AI Safety, and Learning from Human Preferences.Come work with us!Anthropic is a public benefit corporation headquartered in San Francisco. We offer competitive compensation and benefits, optional equity donation matching, generous vacation and parental leave, flexible working hours, and a lovely office space in which to collaborate with colleagues. Guidance on Candidates' AI Usage: Learn about our policy for using AI in our application process.