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Obsidian Security

Full-time|$260K/yr - $300K/yr|On-site|Palo Alto, CA

Obsidian Security seeks a Principal Product Security Engineer to lead and expand its product security program. This senior role centers on securing SaaS products, cloud infrastructure, CI/CD pipelines, and related services. The position requires strong technical expertise, sound judgment, and the ability to guide teams across the organization. Key responsibi…

Apr 28, 2026

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Lead Security Engineer (AI) – Product Security

Nubank

Full-time|On-site|USA, Durham; USA, Miami; USA, Palo Alto; USA, Washington DC

As a Lead Security Engineer specializing in AI and Product Security at Nubank, you will play a pivotal role in safeguarding our innovative financial solutions. Your expertise will help us develop and implement robust security measures that protect sensitive data and maintain the trust of our users. You will lead a dynamic team, driving security initiatives and collaborating closely with various departments to integrate security protocols into our product development lifecycle.

Apr 6, 2026

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Product Security Engineer - Cloud & Infrastructure

1X

Full-time|$137.9K/yr - $240K/yr|On-site|Palo Alto, California, United States

Product Security Engineer, Cloud & InfrastructurePalo Alto, CA (on-site)About 1XAt 1X, we are pioneering the future of work by developing humanoid robots that collaborate with humans to address labor shortages and foster abundance.The RoleAs a Product Security Engineer specializing in cloud and infrastructure, your role will be crucial in designing and maintaining secure architectures, building cloud-native security services, and safeguarding CI/CD pipelines. You will play a key part in ensuring secure communications and protecting data across 1X’s robotics platforms.Your ResponsibilitiesCollaborate closely with engineering teams to develop and maintain security-critical cloud services.Implement infrastructure-as-code security practices for consistent and secure deployments.Design and manage identity and access systems enforcing just-in-time and least-privilege access.Secure CI/CD pipelines against poisoning and credential theft while ensuring artifact integrity.Create and manage cloud-native security services for device authentication, data protection, and secure communication.Architect secure cloud networks through VPC segmentation, traffic filtering, and access control.Configure and oversee cloud security posture management (CSPM) tools to identify misconfigurations and support incident response across environments.

Sep 23, 2025

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Product Infrastructure Security Engineer

Palantir Technologies Inc.

Full-time|On-site|Palo Alto, CA

Join Palantir Technologies as a Product Infrastructure Security Engineer, where you will play a pivotal role in safeguarding our innovative software solutions. Your expertise will help us ensure the security and integrity of our products, protecting sensitive data while driving our mission forward.

Mar 25, 2026

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Principal Enterprise Security Engineer

Obsidian Security

Full-time|$260K/yr - $300K/yr|On-site|Palo Alto, CA

Founded in 2017, Obsidian Security is dedicated to addressing a vital need in the digital landscape: safeguarding SaaS applications where modern enterprises operate—such as Microsoft 365, Salesforce, and many others. With the backing of esteemed investors like Greylock, Norwest Venture Partners, and IVP, we have established a comprehensive SaaS security platform designed to mitigate risks, detect and respond to threats, and thwart breaches at their origin. Our team comprises seasoned leaders who have helped shape the fields of endpoint and identity security at renowned companies like CrowdStrike, Okta, Cylance, and Carbon Black. We are currently redefining SaaS security in the age of agentic AI. Obsidian Security is trusted by global enterprises, including Snowflake, T-Mobile, and Pure Storage, protecting over 200 organizations across North America, Europe, the Middle East, Southeast Asia, Australia, and New Zealand—many of which are among the world’s largest Fortune 1000 and Global 2000 companies. With robust global momentum, an expanding partner ecosystem featuring SentinelOne, Databricks, and Google Cloud, and a significant fundraising round on the horizon, we are rapidly scaling towards long-term growth and IPO readiness. Join us in shaping the future of SaaS security!

Mar 11, 2026

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Product Security Engineer - Cryptography & PKI

1X

Full-time|$137.9K/yr - $240K/yr|On-site|Palo Alto, California, United States

Product Security Engineer - Cryptography & PKIPalo Alto, CA (on-site)About 1XAt 1X, we are pioneering the development of humanoid robots that seamlessly collaborate with humans to address labor shortages and foster abundance in various industries.The RoleAs a Product Security Engineer with a focus on cryptography and PKI, you will be instrumental in creating and expanding the cryptographic framework that safeguards 1X's robots and their communications. Your expertise will play a critical role in ensuring trust, integrity, and sustained security throughout the company's hardware and software environments.Your ResponsibilitiesDesign and oversee comprehensive cryptographic services, including PKI and key lifecycle management.Establish a robust HSM infrastructure to serve as the root of trust for firmware signing and IoT authentication.Lead the assessment, selection, configuration, and integration of HSM vendor solutions.Architect scalable key management systems to accommodate future needs.Design remote device attestation solutions utilizing technologies such as fTPM or OP-TEE.Create and automate secure pipelines for firmware and bootloader signing.Define policies and infrastructure for author key provisioning, rotation, and destruction.Secure build systems and implement code-signing workflows.Develop architecture for factory provisioning, enabling mass key and certificate distribution.Support the development of secure communication protocols.Collaborate effectively with cross-functional teams, including Product Security, Cloud Infrastructure, Device Engineering, and SecOps.

Sep 18, 2025

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Product Security Engineer - Operating System at 1X | Palo Alto, CA

1X

Full-time|$137.9K/yr - $240K/yr|On-site|Palo Alto, California, United States

Product Security Engineer - Operating SystemPalo Alto, CA (on-site)About 1XAt 1X, we are pioneers in developing humanoid robots designed to collaborate with humans, addressing labor shortages and fostering abundance in various sectors.The RoleWe are on the lookout for a skilled Product Security Engineer specializing in operating system security to enhance the robustness of our robotics platform. In this pivotal role, you will architect and implement critical security features such as secure boot, trusted execution environments, and service hardening. Your contributions will be essential in safeguarding sensitive operations and data while empowering our developers to adhere to security best practices. This position plays a vital role in bolstering the resilience and trustworthiness of our systems.You WillDevelop and maintain secure critical services for Linux systemsImplement secure boot chains utilizing fused hardware keys with rollback protectionIntegrate OP-TEE to protect sensitive assets, including mTLS certificates and disk encryption keysHarden system services using least-privilege operations, systemd features, namespacing, and syscall filteringCreate hardening templates and automation tools to facilitate security enforcement for developersAutomate security validation processes within CI/CD pipelinesDesign and enforce device access controls for Linux systemsContribute and deploy C/C++ code (or similar) into production environments

Sep 23, 2025

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Principal Product Marketing Manager - Compliance

Obsidian Security

Full-time|$213K/yr - $231K/yr|Hybrid|Palo Alto

Founded in 2017, Obsidian Security was established to address a vital need: securing the SaaS applications that underpin modern business operations, including platforms such as Microsoft 365, Salesforce, and many others. Supported by esteemed investors like Greylock, Norwest Venture Partners, and IVP, we have developed a comprehensive SaaS security platform designed to mitigate risks, identify and respond to threats, and prevent breaches from the outset. Our team comprises industry leaders who have significantly influenced the endpoint and identity security sectors at companies like CrowdStrike, Okta, Cylance, and Carbon Black. We are currently revolutionizing SaaS security in the age of agentic AI. Trusted by global enterprises such as Snowflake, T-Mobile, and Pure Storage, we safeguard over 200 organizations across North America, Europe, the Middle East, Southeast Asia, Australia, and New Zealand, including numerous Fortune 1000 and Global 2000 firms. With robust global traction, an expanding partner ecosystem including SentinelOne, Databricks, and Google Cloud, and a significant fundraising round on the horizon, we are rapidly scaling towards sustainable growth and preparing for an IPO. Join us as we shape the future of SaaS security!

Mar 11, 2026

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Principal Product Manager at Qualified Health | Palo Alto, CA

Qualified Health

Full-time|$230K/yr - $270K/yr|Hybrid|Hybrid - Palo Alto, Ca

Hybrid Position; Travel RequiredJoin Us in Revolutionizing Healthcare.At Qualified Health, we are at the forefront of transforming healthcare through cutting-edge Generative AI technology. Our innovative infrastructure creates a unified data foundation, facilitates the creation of healthcare-specific AI agents, enables real-time algorithm monitoring, and ensures comprehensive AI governance. Partnering with leading health systems, we strive to make a tangible impact on patient care.This role is more than just a job; it is a chance to shape the future of AI in healthcare, tackle complex challenges, and significantly enhance patient care. If you are driven, innovative, and eager to make a difference, we invite you to join our dynamic team.Be part of the future of healthcare with us.Job OverviewAs the Principal Product Manager, you will be pivotal in managing strategic relationships with senior healthcare executives while spearheading the discovery and development of impactful AI solutions. You will translate strategic alignment with clients into effective tools that transform their business operations. This senior-level, client-facing role requires travel to various health system sites to facilitate high-stakes discovery sessions, comprehensively understand complex clinical and operational workflows, and convert these insights into validated AI product opportunities.In this role, you will collaborate closely with customers to explore workflows, prototype solutions, and mitigate risks before engineering investments, ensuring that we address the right problems with solutions grounded in real-world healthcare operations. From initial customer engagement to deployment and scaling, you will help design AI assistants and workflow automation solutions that yield measurable clinical and operational impact.Additionally, you will evolve into a leadership position, managing a team of Product Managers, guiding them through discovery, solution design, and client engagement, while setting high standards for product rigor and delivery. The ideal candidate will possess senior management consulting or product leadership experience, a solid technical understanding of LLM-powered applications, proven team leadership skills, and the executive presence necessary for navigating complex C-suite discussions. This position reports to Product Leadership and is accountable for client success and the development of scalable product solutions.

Mar 24, 2026

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Principal Engineer, Online Systems

Pinterest, Inc.

Full-time|On-site|San Francisco, CA, US; Palo Alto, CA, US

Role overview Pinterest is seeking a Principal Engineer to join the Online Systems team, based in either San Francisco or Palo Alto. This position centers on designing and building scalable systems that serve millions of users. The focus is on enhancing user engagement and optimizing the performance of Pinterest's online platforms. What you will do Architect and develop large-scale applications built for high-traffic environments Collaborate with engineering, product, and design teams to deliver reliable solutions Lead technical decisions that influence the direction of Pinterest's online systems

Apr 27, 2026

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Application Security Engineer

xAI

Full-time|$200K/yr - $340K/yr|On-site|Palo Alto, CA; San Francisco, CA

Join our innovative team at xAI as an Application Security Engineer, where you will play a vital role in safeguarding our cloud-native applications throughout the software development lifecycle. You will focus on ensuring the security of code, CI/CD pipelines, and the integration of emerging AI technologies. As part of a small, driven group, your contributions will directly impact our mission to create AI systems that enhance humanity's quest for knowledge.

Feb 6, 2026

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Principal Digital Design Engineer

PsiQuantum

Full-time|$219K/yr - $265K/yr|On-site|Palo Alto, California, United States

At PsiQuantum, we are on a groundbreaking mission to create the first practical quantum computers—devices capable of unlocking the monumental advances that the field has long envisioned. Established in 2016, our exclusive commitment is to design and implement million-qubit, fault-tolerant quantum systems.Quantum computers leverage the principles of quantum mechanics to tackle challenges that even the most powerful supercomputers or AI technologies cannot address. Their potential applications span across critical sectors such as energy, pharmaceuticals, finance, agriculture, transportation, materials science, and many more.Our innovative architecture is rooted in silicon photonics. By capitalizing on the sophisticated semiconductor manufacturing processes—collaborating with partners like GlobalFoundries—we are able to utilize the same high-volume techniques that produce billions of chips for telecommunications and consumer electronics. Photonics presents inherent advantages for scalability: photons are unaffected by heat, resistant to electromagnetic interference, and seamlessly integrate with existing cryogenic cooling and standard fiber-optic systems.In 2024, PsiQuantum announced government-supported initiatives aimed at constructing our inaugural utility-scale quantum computers in Brisbane, Australia, and Chicago, Illinois. These projects signify a growing acknowledgment that quantum computing is poised to be strategically and economically transformative—and that the time to scale is now.Additionally, PsiQuantum is dedicated to developing the algorithms and software essential for maximizing the commercial viability of these systems. Our application, software, and industry teams collaborate directly with leading Fortune 500 companies—including Lockheed Martin, Mercedes-Benz, Boehringer Ingelheim, and Mitsubishi Chemical—to prepare quantum solutions for tangible world applications.Quantum computing signifies not a mere extension of classical computing, but a radical transformation—a pathway to overcoming obstacles that cannot be resolved through any other means. The possibilities are vast, and we possess a clear strategy to actualize them.We invite you to join our journey.

Mar 4, 2026

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Application Security Engineer

Palantir Technologies

Full-time|On-site|Palo Alto, CA

Join a Transformative CompanyAt Palantir, we develop cutting-edge software that empowers organizations to make data-driven decisions and optimize their operations. Our platforms enable partners to tackle critical challenges—from developing life-saving pharmaceuticals to predicting supply chain disruptions and locating missing individuals.About the RoleAs a key member of our Application Security Team, you will play an instrumental role in safeguarding vital information and ensuring the security of our software products. We are committed to enabling our developers to be agile and produce secure applications, especially given the high-stakes nature of our work in defense, intelligence, and commercial applications.Your responsibilities will include:• Product Security Assessments. Conduct comprehensive security evaluations of our product and service portfolio, utilizing whitebox, greybox, and blackbox testing methodologies. Collaborate with offensive security teams and engineering departments to fortify our offerings against sophisticated threats.• Architectural Security Expertise. Serve as the primary security advisor for product architects and engineers. Engage in threat modeling, risk assessments, and the implementation of security controls to mitigate identified vulnerabilities, ensuring our designs adhere to a secure-by-default approach.• Strategic Security Leadership. Take ownership of transformative security initiatives that influence the entire organization. Your contributions may include implementing software supply chain security measures, establishing hardware-backed GPG key signing protocols, and driving security automation efforts.• Vulnerability Discovery and Remediation. Innovate methods for identifying and addressing security weaknesses in our products. Utilize static and dynamic analysis, security scanning tools, and collaborate with our incident response team to tackle product security challenges.This position offers extensive influence, autonomy, and the resources to effect substantial security enhancements across Palantir. We welcome diverse backgrounds and experiences in candidates, with an emphasis on curiosity, persistence, and a commitment to excellence.

Sep 11, 2012

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Product Manager for Agent Security and Governance

Glean

Full-time|$160K/yr - $240K/yr|On-site|San Francisco Bay Area

About Glean:Founded in 2019, Glean is a cutting-edge AI-driven knowledge management platform that empowers organizations to efficiently discover, organize, and share information within their teams. By integrating seamlessly with applications such as Google Drive, Slack, and Microsoft Teams, Glean ensures that employees have access to the right knowledge precisely when they need it, enhancing productivity and collaboration. Our state-of-the-art AI technology streamlines knowledge discovery, enabling teams to harness their collective intelligence more effectively.The vision for Glean was inspired by our Founder & CEO Arvind Jain’s profound insight into the difficulties employees encounter when trying to locate and comprehend information in the workplace. Witnessing the challenges posed by scattered knowledge and a multitude of SaaS tools, he was determined to create a solution - an AI-powered enterprise search platform that enables individuals to swiftly and intuitively access the information they require. Since our inception, Glean has emerged as the leading Work AI platform, merging enterprise-grade search capabilities, an AI assistant, and robust application and agent-building functionalities to fundamentally transform the way employees work.About the Role:As a Product Manager at Glean, you will tackle a common challenge faced by knowledge workers globally each day. You will be instrumental in delivering top-tier products for the discovery, curation, sharing, and management of knowledge. We have only begun our journey toward realizing our long-term vision for an intelligent work assistant, and we are looking for exceptional product leaders to help us advance further.As part of a lean product team, you will significantly influence both the product roadmap and the team dynamics. You will work closely with our outstanding Design, Engineering, Sales, Marketing, and Success teams to gain insights into our customers and develop industry-leading tools. This role offers the opportunity to wear multiple hats and gain diverse experiences.In your capacity as Glean’s PM for Agent Security and Governance, you will spearhead the development of innovative technologies and product features that encompass explainable AI systems, identification and mitigation of various AI risk factors, and the implementation of best practices for security and governance.

Nov 13, 2025

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Principal Security Software Engineer - Applied Computing at SpaceX | Palo Alto, CA

Space Exploration Technologies Corp.

Full-time|On-site|Palo Alto, CA

Join SpaceX as a Principal Security Software Engineer within our Applied Computing team, where you will play a crucial role in enhancing the security posture of our software systems. Your expertise will contribute to the development and implementation of cutting-edge security measures ensuring the integrity and safety of our technology innovations.

Mar 27, 2026

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Senior Staff / Principal Engineer - Digital Ecosystem

Nubank

Full-time|On-site|Brazil, Belo Horizonte; Brazil, Campinas; Brazil, Rio de Janeiro; Brazil, Sao Paulo; USA, Durham; USA, Miami; USA, Palo Alto; USA, Washington DC

Join Nubank as a Senior Staff / Principal Engineer in our Digital Ecosystem team, where you will lead innovative projects that redefine the financial landscape in Brazil and beyond. Your expertise will shape our strategies and drive the development of scalable and secure digital solutions.

Apr 10, 2026

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Network Security Engineer

xAI

Full-time|$180K/yr - $440K/yr|On-site|Palo Alto, CA

Join xAI’s innovative security team as a Senior Network Security Engineer, where you will leverage your extensive knowledge in network security technologies, particularly in firewalls, VPNs, and routing protocols. Engage in a fast-paced environment that values adaptability and problem-solving skills, while ensuring the security of our cutting-edge AI infrastructure. Your role will involve implementing robust security measures, managing firewall configurations, and developing forward-thinking network security solutions that address our evolving challenges.

Dec 29, 2025

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Infrastructure Security Engineer

Xai

Full-time|On-site|Palo Alto, CA

Join our innovative team at Xai as an Infrastructure Security Engineer. In this role, you will be instrumental in safeguarding our infrastructure, ensuring that our systems are secure against evolving threats. You will collaborate with cross-functional teams to implement security measures and best practices.

Mar 26, 2026

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Principal Software Engineer for Medical Devices

SandboxAQ

Full-time|On-site|Palo Alto, California

About SandboxAQSandboxAQ is a rapidly growing company that provides innovative AI-driven solutions to tackle some of the most pressing challenges in the world today. Our advanced Large Quantitative Models (LQMs) are instrumental in driving progress across various sectors, including life sciences, financial services, navigation, and cybersecurity.As a global team comprised of specialists in AI, chemistry, cybersecurity, physics, mathematics, medicine, and engineering, we are committed to fostering a culture of creativity, collaboration, and significant impact. Emerging from Alphabet Inc. in 2022, we are backed by leading investors and a braintrust of industry experts.At SandboxAQ, we are dedicated to investing in our people and building a vibrant workforce ready to confront the world's major challenges. Join us to elevate your career while pursuing an inspiring mission alongside like-minded individuals who value entrepreneurship, accountability, and transformative outcomes.The OpportunityOur team at AQMed is at the forefront of developing a revolutionary, non-invasive cardiac diagnostic platform aimed at transforming heart health assessment. We blend the rigor of regulated medical device development with the agility of a startup, prioritizing quality, scientific integrity, and patient safety.We are looking for a Principal Software Engineer to act as the Technical Lead for our medical device software platform. In this pivotal role, you will oversee the software architecture for our device, encompassing everything from embedded Linux to cloud solutions.This role transcends mere execution; it embodies strategic technical leadership. While not a Product Manager, we seek a Tech Lead with a product-oriented mindset. You will architect the system with foresight, ensuring our Software as a Medical Device (SaMD) product meets future demands. Your work will establish a robust technical foundation for rapid scaling, seamless integration with hospital systems (EMR), and deployment of future AI models, enabling commercialization rather than hindering it.

Apr 1, 2026

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Security Engineer, Foundation

Pylon

Full-time|On-site|Palo Alto

Role Overview Pylon is hiring a Security Engineer focused on foundational security practices at our Palo Alto office. This role centers on building and maintaining security protocols to protect company infrastructure. What You Will Do Design, implement, and maintain security measures across systems and networks Work with teams from different disciplines to spot vulnerabilities and address them Help ensure Pylon meets relevant industry security standards and compliance requirements Location This position is based in Palo Alto.

Apr 13, 2026

Principal Software Engineer for Medical Devices

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