Research Engineer - AI Vulnerability Detection at DepthFirst | San Francisco

About depthfirst depthfirst builds software to strengthen the foundations of modern technology. The team focuses on protecting software from vulnerabilities that threaten its reliability and security. The mission: make software safer everywhere it runs. depthfirst develops intelligent tools that find and fix critical software vulnerabilities. The company trains and scales security AI agents to uncover zero-day issues in large customer codebases and widely used open source projects. The founding team brings experience from DeepMind, Databricks, Square, and Faire, with deep backgrounds in data, infrastructure, security, and large language models. depthfirst welcomes technical professionals interested in working where AI, Security, and Infrastructure meet. Role Overview: Security Product Engineer This San Francisco-based role centers on working directly with enterprise customers to implement depthfirst's security AI agents in their environments. The Security Product Engineer acts as the technical point of contact, ensuring the AI tools detect vulnerabilities at scale within real-world systems. The position blends hands-on engineering with regular customer interaction. Security Product Engineers learn about each customer's security landscape, design custom integrations using depthfirst's platform, and partner with the product team to turn successful solutions into product features. The work shapes both how customers use depthfirst and how the product evolves. What You Will Do Work with enterprise customers to deploy depthfirst's security AI agents in production. Build strong relationships with security teams, acting as a trusted advisor who understands their needs. Translate customer challenges into practical solutions, including custom integrations, data pipelines, and workflows connecting depthfirst with existing security tools. Identify common patterns across deployments and collaborate with the product team to develop platform-wide capabilities. Communicate effectively with stakeholders at all levels, from security engineers to CISOs. Own the technical delivery process, from initial scoping through implementation and ongoing optimization. Travel to customer sites when needed to support successful deployments.

About DepthFirst AIAt DepthFirst, we are committed to reinforcing the backbone of modern civilization: software. However, vulnerabilities pose significant risks to its integrity, security, and resilience. Our mission is to innovate solutions to enhance software security.We are pioneering intelligence technologies designed to detect and remediate critical software vulnerabilities. Our focus is on training and scaling security AI agents capable of identifying zero-day vulnerabilities across extensive customer codebases and widely-used open source software.With a founding team comprising experts from leading organizations like DeepMind, Databricks, Square, and Faire, we seek talented individuals eager to work at the confluence of AI, Security, and Infrastructure.About This Role:We are in search of an accomplished Security Researcher to contribute to the development and training of AI agents specialized in vulnerability discovery and exploitation.Your role will involve creating technology that can uncover vulnerabilities at scale, akin to discovering the next Log4J, and facilitating the identification and remediation of vulnerabilities in both customer and open source codebases.We are seeking dynamic security researchers with a keen intuition for identifying, analyzing, and investigating application vulnerabilities. Collaborating with AI researchers and engineers, you will explore novel attack vectors and assist in the advancement of sophisticated detection and defense mechanisms. Your contributions will be vital in reshaping security practices for organizations worldwide.You Will Be Excited About This Role Because You Will:Develop technologies capable of identifying novel vulnerabilities at scale in both proprietary and open source codebases.Design techniques aimed at minimizing false positives through automated exploitation, proof of concept generation, and context inference.Engage closely with engineers to comprehend limitations and innovate methodologies to enhance our systems.Publish internal technical reports and contribute to security advisories as necessary.Work on a product that addresses critical security issues, already proving valuable to customers by helping them rectify significant vulnerabilities within days of implementation.

About depthfirstAt depthfirst, we recognize that software is the cornerstone of contemporary society, yet it is continuously threatened by vulnerabilities that undermine its integrity, security, and resilience. Our mission is to fortify the world's software.We are pioneering intelligence solutions to identify and address critical software vulnerabilities. Our focus lies in training and scaling security AI agents to uncover zero-day vulnerabilities across extensive customer codebases and widely-used open-source software.Our founding team boasts extensive expertise in data, infrastructure, security, and AI, featuring leaders from renowned organizations such as DeepMind, Databricks, Square, and Faire.About This RoleWe are in search of a Forward Deployed Engineer to engage directly with our clients, deploying and operationalizing depthfirst's security AI agents within their environments. In this role, you will serve as the technical conduit between our product offerings and enterprise security infrastructure, ensuring our AI effectively identifies vulnerabilities at scale.You will collaborate closely with clients to understand their unique security challenges, develop custom integrations on top of depthfirst's platform, and work alongside our product team to refine and generalize solutions. This position merges hands-on engineering work with in-depth customer collaboration, allowing you to influence both customer experiences with depthfirst and the evolution of our product.What You'll Be DoingIntegrate depthfirst's security AI agents into production environments for enterprise clientsEstablish strong relationships with security teams, becoming a trusted advisorTranslate client challenges into practical solutions: develop custom integrations, data pipelines, and workflows that connect depthfirst with existing security toolsAct as a liaison between customers and the product team—identify deployment patterns and collaborate to enhance platform capabilitiesEffectively communicate with a range of stakeholders, from security engineers to Chief Information Security Officers (CISOs)Manage the complete technical delivery process, from scoping and implementation to optimizationTravel to client sites as necessary to ensure successful project outcomes

About depthfirst depthfirst builds software security solutions to protect the integrity and resilience of critical systems. The team focuses on tackling vulnerabilities that threaten modern software, aiming to safeguard codebases across industries. Using AI-driven security agents, depthfirst uncovers zero-day vulnerabilities in both customer applications and widely used open-source projects. The company’s founders bring experience from DeepMind, Databricks, Square, and Faire, blending backgrounds in data, infrastructure, security, and AI. depthfirst welcomes thoughtful, driven people interested in working where AI, security, and infrastructure intersect. Role Overview: Channel Partnerships Lead This in-office position is based in San Francisco. The Channel Partnerships Lead will report directly to the CRO and work closely with Sales, Revenue Operations, and Marketing. The role centers on building and expanding a strong partner network as depthfirst grows. depthfirst has already gained traction with key cybersecurity value-added resellers (VARs). The next step is to strengthen these relationships and grow a partner ecosystem that drives meaningful business pipeline. The Channel Partnerships Lead will evaluate new channel opportunities, including managed security service providers (MSSPs), hyperscaler marketplaces, global systems integrators (GSIs), and potential product integration partners. This position suits someone entrepreneurial who enjoys building relationships, driving revenue through partnerships, and shaping a partner program from the ground up. Compensation rewards partner-driven pipeline and closed-won deals. What You Will Do Identify, recruit, and onboard strategic partners such as VARs, MSSPs, hyperscaler marketplace partners, and GSIs. Build and nurture strong partner relationships, enabling partners to position and sell the depthfirst platform. Drive pipeline and revenue through partnerships, collaborating with account executives on co-selling and deal execution. Develop partner enablement programs, including training, certifications, and go-to-market strategies.

About DepthFirst AIAt DepthFirst, we recognize that software serves as the backbone of modern civilization, yet its vulnerabilities pose significant risks to integrity, security, and resilience. Our mission is to address these security challenges head-on.We are pioneering the development of intelligent systems that autonomously identify and remediate critical software vulnerabilities. Our focus lies in training and scaling AI agents to uncover zero-day vulnerabilities across extensive customer codebases and widely-used open-source software.Our esteemed founding team brings a wealth of experience in security and large language models, featuring technical leaders from industry giants such as DeepMind, Databricks, Square, and Faire. We are in search of talented individuals eager to explore the intersection of AI, security, and infrastructure.About the Role:We are on the lookout for a seasoned Backend Engineer who will spearhead the creation of the world's first AI-native platform dedicated to autonomously identifying and resolving software vulnerabilities in code. You will be integral to developing the infrastructure that drives our security AI agents, tackling challenges related to large-scale code execution, complex agent orchestration, evaluation benchmarks, and training pipelines. We prioritize engineering excellence and secure designs capable of scaling for thousands of enterprise-level users. Your contributions will be pivotal in redefining how businesses approach security.What Excites You About This Role:Technical Leadership: Mentor team members, establish technical direction, and set best practices for backend engineering at DepthFirst.Architect and Scale: Develop complex coding agent pipelines that efficiently scan and execute large codebases to identify intricate vulnerabilities.Benchmark Development: Build, maintain, and refine evaluation benchmarks for AI agents that mirror real-world user challenges.Ownership: Take charge of our product, influencing its architecture, performance, and long-term success.Impactful Work: Participate in a project that addresses critical security issues. Our initial customers have already seen significant value in resolving vulnerabilities shortly after adopting our solution.

About depthfirstAt depthfirst, we are passionate about harnessing the power of software as the backbone of modern civilization. However, inherent vulnerabilities pose significant risks to its integrity and security. Our mission is to fortify software systems worldwide.We are pioneering intelligence-driven solutions to identify and mitigate critical software vulnerabilities. Our focus is on developing and scaling AI security agents capable of discovering zero-day vulnerabilities within extensive customer codebases and widely-used open-source software.Our leadership team comprises seasoned experts in data, infrastructure, security, and AI, featuring talent from renowned organizations such as DeepMind, Databricks, Square, and Faire. We invite motivated and thoughtful individuals to join us at the exciting crossroads of AI, security, and infrastructure.About This RoleAs a Business Operations Lead, your role will be pivotal in our strategic scaling during this exhilarating growth phase at depthfirst. This position is ideal for someone eager to learn, who thrives in a fast-paced environment, and enjoys juggling diverse tasks ranging from data analysis to operational execution and cross-functional collaboration.You will engage with various workstreams within Finance and Operations, taking ownership of initiatives that are vital for maintaining our efficiency in a rapidly evolving company. No task is too big or small, and this role offers substantial opportunities for professional growth as we expand.Your enthusiasm for this role stems from the fact that you will...Assist in analyzing key business drivers by extracting data, constructing models, and identifying successes and areas for improvement.Lead cross-functional projects encompassing GTM, product development, engineering, and more, ensuring progress and preventing any oversights.Steer operational initiatives that require a structured and accountable leadership approach, including vendor management, compliance workstreams, and process documentation.Serve as a crucial connector among teams, facilitating follow-ups, coordination, and resolution of obstacles.Take a hands-on approach to meet business needs, demonstrating comfort in both data analysis and practical operational tasks.

Join depthfirst, a pioneering company at the forefront of innovative technology solutions, as we seek a talented Product Designer to enhance our user experience and design impactful products. As a Product Designer, you will play a crucial role in shaping our product vision and translating complex ideas into intuitive designs. Your creativity and design skills will help us create products that not only meet user needs but also delight and inspire.

Join Astranis as a Product Security Engineer and play a crucial role in safeguarding our cutting-edge technology and systems. You will work collaboratively with cross-functional teams to identify vulnerabilities, implement security measures, and ensure the integrity of our products. Your expertise will help us maintain the highest security standards while delivering innovative solutions.

This Security Engineer role at Superhuman Platform Inc. is based in San Francisco and follows a hybrid work model. The schedule blends focused individual work with regular in-person collaboration, supporting strong team relationships and encouraging innovation. Role overview Superhuman seeks a Security Engineer to help protect the trust of millions of users. The position centers on collaborating with partners to identify and deliver projects that strengthen security and reduce risk across Superhuman’s products, platform, and IT systems. As Superhuman’s suite of AI productivity tools grows, the technical landscape becomes more complex, offering opportunities to solve new challenges and influence the product roadmap. Insights into the engineering team can be found on the technical blog. What you will do Design and implement secure-by-default architectures to make it easier for developers to build securely across Superhuman’s ecosystem. Lead the adoption of AI and automation in security, including automated threat detection and AI-assisted code reviews and vulnerability analysis. Translate security requirements into actionable roadmaps that align with business objectives, supporting both technical and non-technical teams. Balance security best practices with product innovation, ensuring risk is addressed throughout the development process. Learn more about Superhuman’s mission and values at superhuman.com and review the company’s values here.

About Cogent SecurityCogent Security is pioneering the future of cybersecurity through Applied AI, creating advanced AI agents designed to combat rapidly evolving cyber threats. Our AI Taskforce analyzes vast datasets to neutralize potential breaches before they impact our clients.Our commitment to innovation combines cutting-edge research with practical application, ensuring our solutions are at the forefront of technology. In addition to our product development, Cogent Research acts as our applied AI laboratory, supplying the expertise required to create highly effective security workflows.Since our launch from stealth mode, Cogent has seen remarkable growth, collaborating with Fortune 500 companies to secure some of the most intricate production environments globally.Backed by Greylock, our team consists of exceptional talents from leading universities such as Stanford, Berkeley, and Carnegie Mellon, as well as high-growth companies like Scale AI and Tesla, and cybersecurity experts from stalwarts like Wiz and DeepMind.

About DepthfirstAt Depthfirst, we view software as the cornerstone of contemporary society. However, vulnerabilities pose a significant threat to its security and reliability. Our mission is to safeguard the integrity of the world’s software.Depthfirst is at the forefront of developing intelligence that identifies and mitigates critical software vulnerabilities. We are training and scaling advanced AI security agents to uncover zero-day vulnerabilities across extensive customer codebases and widely used open-source software.Our founding team boasts profound expertise in data, infrastructure, security, and AI, featuring leaders from notable companies such as DeepMind, Databricks, Square, and Faire. We seek motivated, insightful individuals eager to engage at the nexus of AI, Security, and Infrastructure.About This RoleWe are in search of an Enterprise Solutions Engineer to assist enterprises in revolutionizing their software security strategies. This pivotal, client-facing role involves overseeing the technical sales process from initial discovery to validation and scaling.You will collaborate directly with Account Executives, security leaders, and engineering teams to establish evaluation metrics, spearhead technical validations, and convert findings into quantifiable business outcomes. As an early contributor to the solutions engineering team, you will play a vital role in shaping our evaluation methodologies, articulating unique value propositions, and amplifying our enterprise initiatives.Your enthusiasm for this position stems from the opportunity to:Lead comprehensive technical evaluations, from initial discovery through proof of value and executive presentations.Collaborate with security and engineering stakeholders to establish clear success criteria linked to vulnerability detection efficacy, false positive minimization, and remediation efficiency.Illustrate how Depthfirst distinguishes itself from traditional SAST and SCA tools through contextual code comprehension, reachability and exploitability analyses, and consistently reproducible results.Engage hands-on within customer CI/CD environments (such as GitHub, GitLab, Jenkins, etc.) to ensure smooth deployments with minimal disruption to developers.Convert technical validation outcomes into executive-level ROI narratives for CISOs, CTOs, and VPs of Engineering.Serve as the customer advocate to Product and Engineering, influencing roadmap priorities based on real-world insights.Contribute to the development and scaling of a world-class solutions engineering function, including the creation of playbooks, demo environments, and standardized evaluation frameworks.

Join Astranis as a Senior Product Security Engineer, where you will play a pivotal role in safeguarding our innovative satellite technology. Your expertise will ensure that our products are secure from design through development and into deployment. Collaborate with cross-functional teams to implement security best practices, conduct risk assessments, and respond to security incidents effectively.

About Cogent SecurityCogent Security is at the forefront of cybersecurity innovation, leveraging Applied AI to develop next-generation AI agents. In an era where cyber attacks evolve rapidly, our AI Taskforce analyzes vast amounts of enterprise data to proactively address vulnerabilities and prevent critical breaches.We combine pioneering research with practical execution, ensuring that our innovative solutions meet real-world challenges. Our Cogent Research division acts as our dedicated AI lab, driving the development of advanced security workflows.Since our emergence from stealth mode, we have rapidly grown, collaborating with Fortune 500 companies to secure complex production environments globally.Supported by Greylock, we have gathered a team of top talent from renowned institutions and leading organizations in the AI and cybersecurity sectors.About the RoleAs an Agent Engineer at Cogent Security, you will be pivotal in designing, building, and deploying critical AI agents tailored for complex client environments. Your role is highly cross-functional, involving direct collaboration with customers to understand their unique needs, adapting our platform accordingly, and iterating on scalable solutions to handle millions of real-world security events.You will manage projects from inception to deployment, including data onboarding and integrating feedback into our core agent platform. Your contributions will shape how AI agents detect threats, triage incidents, and automate security workflows for some of the most sophisticated organizations worldwide.This position is ideal for engineers who excel in dynamic environments, enjoy tackling complex technical challenges, and wish to see the tangible impact of their work.

About Cogent SecurityCogent Security is an innovative Applied AI Lab pioneering the future of AI agents in the realm of cybersecurity. In a world where cyber threats evolve at unprecedented speeds, our 'AI Taskforce' analyzes vast amounts of enterprise data to proactively address vulnerabilities and avert critical breaches.We remain at the forefront of technology by merging cutting-edge research with practical applications. Our dedicated Cogent Research team fuels our mission, ensuring we develop truly effective security workflows powered by AI.Since our inception, Cogent has rapidly grown, collaborating with Fortune 500 companies to safeguard the most intricate production environments globally.Supported by Greylock, our team comprises some of the brightest minds in applied AI, including experts from:Renowned universities such as Stanford, Berkeley, Penn, Duke, Carnegie Mellon, and Waterloo.High-growth unicorn companies like Scale AI, Databricks, Stripe, Tesla, and Coinbase.Leading cybersecurity specialists from Wiz, Abnormal AI, and Zscaler.Prestigious research institutions including DeepMind and SAIL.About the RoleAs we embark on building a suite of backend services and integrations with our design partners, we seek passionate and skilled Backend Engineers at both Senior and Staff levels, eager to thrive in the Applied AI domain.ResponsibilitiesDesign and implement critical backend subsystems and integration platformsComprehend business objectives and customer requirements to engineer backend subsystems that align with our technology strategies.Adapt systems to meet evolving needs of design partners and clients.Incorporate non-functional requirements such as compliance and security into system design.Establish scalable infrastructure foundationsPrepare for future growth in customer base, headcount, and data management by collaborating with your team to enhance infrastructure.

Join Decagon as a Security Engineer where you will play a crucial role in safeguarding our systems and data. You will collaborate with cross-functional teams to identify vulnerabilities, implement security measures, and ensure compliance with industry standards. This is an exciting opportunity to work in a dynamic environment and contribute to the security posture of our organization.

Juicebox is looking for a Security Engineer based in San Francisco. The main focus is to safeguard digital infrastructure and maintain the security of systems and data. Key responsibilities Develop and apply security measures throughout company systems Support compliance efforts with relevant industry security standards Location This role is based in San Francisco.

At Crusoe, our mission is to accelerate the abundance of energy and intelligence. We are developing cutting-edge technology that empowers individuals to create ambitiously with AI, ensuring that we do not compromise on scale, speed, or sustainability.Join us in driving the AI revolution through sustainable technology. At Crusoe, you will lead significant innovations, make a real impact, and collaborate with a team that is at the forefront of responsible and transformative cloud infrastructure.About This RoleCrusoe is establishing the foundational infrastructure for the future of AI and high-performance computing. We are in search of a talented individual who is committed to building security into our systems from the ground up. As a member of the Product Security team, you will not only secure our future but actively contribute to building it. You will work closely with engineering teams, deploy production code, design secure architectures, and establish the security foundations necessary to safeguard our platform at scale. This is a high-impact role where you will influence security practices across the company, enabling teams to choose the secure path effortlessly.We are looking for a Senior Product Security Software Engineer who excels as a software engineer with expertise in AI. You will design secure systems, create security controls that integrate smoothly into developer workflows, and elevate the security standards across our AI infrastructure and distributed systems while maintaining a pragmatic, delivery-focused approach.

About Cogent SecurityCogent Security is at the forefront of innovation in cybersecurity, operating as an Applied AI Lab dedicated to developing next-generation AI agents. In an era where cyber threats evolve rapidly, our "AI Taskforce" analyzes vast amounts of enterprise data to proactively address vulnerabilities and prevent significant breaches.Blending cutting-edge research with practical implementation, our team works diligently to transform theoretical concepts into actionable security solutions. Our applied AI lab, Cogent Research, provides essential research capabilities that enable the realization of autonomous security workflows.Since our emergence from stealth mode, Cogent has seen impressive growth, collaborating with Fortune 500 companies to enhance security in some of the world’s most complex environments.Supported by Greylock, we have assembled a team of top-tier talent from influential universities and leading companies in the tech and cybersecurity sectors.

Join Our Team at MercorAt Mercor, we sit at the cutting edge of labor markets and AI innovation. Collaborating with top AI laboratories and enterprises, we provide the vital human intelligence necessary for the advancement of AI development.Our extensive talent network trains advanced AI models, sharing insights and experiences that transcend mere coding. Daily, over 30,000 experts in our community collectively generate more than $2 million.Mercor is pioneering a new realm of work wherein expertise fuels AI progress. This ambition calls for a dynamic, fast-paced, and dedicated team. You will collaborate with researchers, operational teams, and AI firms at the forefront of redefining our societal systems.As a profitable Series C enterprise valued at $10 billion, we operate in-person five days a week from our newly established headquarters in San Francisco.About the RoleIn your capacity as a Security Engineer at Mercor, you will be entrusted with the crucial task of protecting our systems, infrastructure, and sensitive data. You will design and execute defense mechanisms, monitor for potential threats, and ensure that security is seamlessly integrated throughout the entire development and deployment lifecycle. This position is perfect for an individual who thrives in fast-paced settings, anticipates risks proactively, and enjoys constructing effective, scalable security systems without hindering innovation.Your ResponsibilitiesDesign and implement robust security controls across our infrastructure, applications, and networks.Continuously monitor for vulnerabilities, threats, and any suspicious activities.Conduct penetration tests, vulnerability assessments, and manage incident responses.Integrate security practices into CI/CD pipelines and development workflows.Ensure compliance with standards such as SOC 2, ISO 27001, and GDPR.Collaborate with engineers to ensure security is prioritized in system design.Research emerging threats and implement proactive countermeasures.Ideal CandidateProfound understanding of security principles, tools, and industry best practices.Experience with SIEMs, IDS/IPS, firewalls, and vulnerability scanning.Familiarity with cloud security environments (AWS, GCP, or Azure).Solid foundation in encryption and secure coding practices.