Senior Security Engineer

Why join usAt Brex, we are redefining financial management through our AI-driven spend platform, empowering companies to manage their expenditures with confidence. Our integrated solutions include corporate cards, banking, and global payments, all paired with user-friendly software for travel and expenses. Our diverse clientele, ranging from innovative startups to established enterprises like DoorDash, Flexport, and Compass, leverage Brex to maintain control over their spending, minimize costs, and boost operational efficiency worldwide.Joining Brex means embracing challenges, pushing boundaries, and collaborating with some of the brightest minds in the tech industry. We are devoted to fostering a diverse and inclusive workforce and believe that your potential should be limited only by your ambition. We provide you with the necessary tools, resources, and support to advance your career.Engineering at BrexOur engineering teams at Brex are dedicated to constructing scalable systems with precision and purpose. We operate in collaborative teams across Software, Data, Security, and IT, functioning with a high degree of autonomy. We tackle complex technical challenges, take ownership of our outcomes, and strive for excellence in every aspect of our work—from architecture to deployment. This is where engineering is a craft, and innovators become leaders.Your RoleAs a Senior Security Operations Engineer at Brex, your primary focus will be on preventing, detecting, and responding to security threats within our corporate and cloud infrastructures. You will leverage existing systems and create new tools to enhance our security posture. Our team manages corporate security, detection and response, and infrastructure security, employing systems engineering and automation to elevate these functions.Being part of the Security Operations team means collaborating closely with Application Security, Corporate Engineering, GRC, and IT. You will have the opportunity to enhance security configurations, promote positive employee behaviors, and work proactively to avert incidents. Additionally, you will contribute to our open-source project Substation and contribute to the Brex Tech Blog. Join us in making impactful contributions to the broader security community while engaging in mentorship and striving for engineering excellence.

We are seeking a highly skilled Senior Security Engineer to join our innovative team at Decagon in San Francisco. In this pivotal role, you will be responsible for safeguarding our digital infrastructure and ensuring the security of our systems against potential threats. You will work closely with cross-functional teams to design and implement security solutions, conduct risk assessments, and develop incident response strategies.As a Senior Security Engineer, you will have the opportunity to leverage your expertise in security protocols, threat detection, and vulnerability management to enhance our security posture. Your contributions will be essential in creating a secure environment for our operations and clients.

About Extend:At Extend, we are transforming the post-purchase landscape for retailers and their customers through innovative AI-driven solutions that elevate customer satisfaction and drive revenue growth. Our all-encompassing platform delivers automated customer service, streamlined returns and exchange management, comprehensive automated fulfillment, and robust product and shipping protection, all complemented by top-tier fraud detection capabilities. By merging cutting-edge technology with outstanding customer service, Extend enables businesses to cultivate trust and loyalty among consumers while optimizing costs and enhancing profitability.Currently, Extend collaborates with over 1,000 prominent merchant partners across diverse sectors, including fashion, cosmetics, furniture, jewelry, consumer electronics, auto parts, sports and fitness, and more. Backed by renowned technology investors, we are headquartered in the heart of San Francisco.Your Role:Act as a key member of the Security Operations team, monitoring and triaging alerts from platforms such as SentinelOne and Wiz. Conduct comprehensive investigations to detect, contain, and mitigate threats and incidents, ensuring a prompt and appropriate response.Proactively identify and evaluate vulnerabilities in both infrastructure and code, collaborating with development and cross-functional teams to resolve issues effectively.Engage in the complete detection lifecycle: model attacker behaviors (MITRE ATT&CK), write and test detections as code across security tools (SentinelOne, Wiz, Okta, AWS CloudTrail), continuously refining to minimize false positives and enhance Mean Time to Detection (MTTD). Support data quality, onboard telemetry, maintain response playbooks, and assist in threat validation across the organization.Assist teams in implementing secure configuration baselines and best practices according to CIS Benchmarks, NIST guidelines, vendor hardening guides, and relevant compliance standards for all company computing assets.Correlate endpoint and infrastructure telemetry to uncover emerging threats. Curate and operationalize intelligence (IOCs, TTPs) into detections and response playbooks, and maintain trusted intelligence feeds.Support Governance, Risk, and Compliance (GRC) initiatives by aligning controls with internal policies and frameworks (e.g., SOC 2, NIST CSF, NYC DFS 500), identifying gaps, aiding audits and evidence collection, tracking remediation, and updating policies and control documentation.Collaborate with engineering and business teams to advocate for security best practices, enhancing the overall security posture.

About LangChainLangChain is dedicated to making intelligent agents a common part of our daily lives. We provide the essential framework for agent engineering that enables developers to transition from experimental prototypes to production-ready AI agents that organizations can depend on. Having started as widely embraced open-source tools, we have evolved to also deliver a robust platform for the development, evaluation, deployment, and management of agents at scale.Our tools, including LangChain, LangGraph, LangSmith, and Agent Builder, are actively utilized by teams delivering tangible AI products across both startups and large corporations. Millions of developers rely on LangChain to empower AI teams at renowned companies such as Replit, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, and 35% of the Fortune 500.With $125M raised in our Series B funding round from prominent investors including IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we are at a pivotal point of innovation, accelerating growth, and empowering every team member to have a significant impact on our products and collaborative culture. At LangChain, your contributions can truly influence how this technology integrates into the real world.About the RoleAs the hands-on security lead, you will work closely with our core product teams to ensure the security of agent workloads from end to end, encompassing everything from SDK to LangSmith/Graph services and customer integrations. You will be responsible for defining our security roadmap, achieving immediate hardening wins, and elevating the standards for how AI infrastructure is secured in production. We are seeking engineers with expertise in either cloud/infrastructure security or application security (expertise in both is a significant advantage!).Lead product & platform security: Design and implement application/infrastructure security controls across LangSmith, LangGraph, and the LangChain SDK ecosystem (Python/TS/Go).Implement secure-by-default authentication and authorization: Enhance SSO/SAML/OIDC/SCIM, manage token lifecycles, establish service-to-service authentication, and ensure tenant isolation for both cloud and self-hosted customers.Vulnerability management: Oversee scanning, triage, and patching SLAs; coordinate with engineering teams to ensure swift remediation without delaying delivery.Develop secure code, conduct reviews, and create tools: Implement secure design principles, write pull requests, execute penetration tests, and introduce lightweight checks (linters, dependency/supply-chain scanning, SBOM/SLSA provenance) to facilitate security at scale.Enhance hardening & operations: Focus on network segmentation/Zero Trust, Kubernetes posture management, secrets management, key rotation, least-privilege IAM, and egress controls.

Join Our Team as a Senior Security EngineerAt LiteLLM, the leading AI Gateway trusted by industry giants such as Adobe, Netflix, and NASA, we empower developers with secure and reliable access to LLMs and associated services. We are seeking a talented Senior Security Engineer to establish robust security measures and observability tools as we scale our platform.Your Role:Become a cornerstone of our security team as our inaugural Security Engineer, tackling pivotal security challenges head-on.Key Responsibilities:Perform in-depth security assessments of the LiteLLM proxy codebase to uncover potential supply chain vulnerabilities.Develop and manage automated security scans for our Docker images, PyPI packages, and CI/CD workflows (including dependency scanning and secrets detection).Create and enforce secure-by-default configurations for both cloud and self-hosted environments (API authentication, IAM least privilege, key rotation).Implement and oversee intrusion detection systems and alerts tailored to model and API usage patterns.Lead incident response efforts and post-mortem analyses, including vulnerability assessments and stakeholder communication.Establish a formal CVE triage and disclosure protocol in collaboration with the engineering team.Conduct internal red teaming and adversarial testing to simulate real-world attacks and enhance our defenses.Collaborate with engineering teams to fortify release pipelines (signed builds, provenance checks, reproducible builds).Develop secure coding standards and conduct regular training sessions for developers focused on supply chain and dependency management.Maintain and update threat models as LiteLLM’s products and architecture evolve.

About SentryAt Sentry, we are dedicated to eradicating bad software. Our mission is to empower developers to create better software more efficiently, allowing everyone to enjoy technology once more.With over $217 million in funding and a community of more than 100,000 organizations, including industry leaders like Disney, Microsoft, and Atlassian, we are at the forefront of building performance and error monitoring tools that minimize bug fixing and maximize product development.We embrace a hybrid work model across our global teams, designating Mondays, Tuesdays, and Thursdays as in-office days to foster collaboration. If you are passionate about creating tools that enhance the digital experience, join us in developing the next generation of software monitoring solutions.About The RoleOur security team is committed to safeguarding every aspect of Sentry, from our customer data to our internal code. As a Senior Security Engineer, you will be integral to our mission of enhancing security across our application and Kubernetes platform. Collaborating with engineering teams, you will help strengthen Sentry’s cloud security posture through strategic architecture, threat modeling, and hands-on coding when necessary.Key ResponsibilitiesLead critical initiatives aimed at addressing significant security challenges, from conceptualization to execution.Collaborate on cross-departmental objectives to drive security goals forward.Conduct research and assess new technologies that can bolster our security framework with a focus on scalability.Identify vulnerabilities within our systems and data while developing and implementing robust protective measures.Support cross-functional teams in integrating security solutions that adhere to Secure-by-Design principles.Ideal Candidate AttributesDesire to be a foundational member of an agile, engineering-centric security team.Enjoy collaborating with enthusiastic security, application, platform, and infrastructure engineers eager to innovate.Passionate about advancing security practices to enhance software quality.

Oleria Security seeks a Senior Implementation Engineer based in San Francisco, CA. This role focuses on integrating and deploying Oleria’s security solutions for clients, ensuring each rollout is reliable and tailored to customer needs. Role overview The Senior Implementation Engineer leads technical deployments of security products. Success in this position means customers experience smooth transitions and ongoing support as their solutions go live. What you will do Take ownership of technical implementation for security products with client organizations Collaborate with engineering, product, and customer success teams to coordinate deployments Diagnose and resolve integration or deployment issues as they arise Contribute to project outcomes and maintain strong customer satisfaction throughout each engagement

Join Airwallex as a Senior Corporate Security EngineerAt Airwallex, we are redefining global financial solutions. As a Senior Corporate Security Engineer, you will play a pivotal role in safeguarding our enterprise systems and employee data from various security threats, including malware and phishing attacks. This is a highly technical position focused on detecting, investigating, and preventing security incidents within a dynamic corporate environment.You will engage in digital forensics, incident response, and the development and deployment of tools designed to protect our diverse range of IT platforms. Collaborate with exceptional teammates to tackle significant challenges while advancing your career as we pioneer the future of global banking.

About Scribd:At Scribd Inc., we ignite curiosity and foster a vibrant ecosystem of stories and knowledge. Our mission is to democratize access to ideas and empower collective wisdom through our innovative platforms: Everand, Scribd, Slideshare, and Fable. Join us as we create an inclusive environment where creativity and collaboration thrive.We believe in cultivating a culture where authenticity and boldness flourish—encouraging open discussions and commitment to our goals while embracing the unexpected. Every team member is empowered to prioritize customer needs and take meaningful actions.Our flexible work policy, Scribd Flex, enhances individual work styles while fostering community connections. We encourage team members to collaborate intentionally through in-person moments, regardless of their location.We're looking for team members who embody "GRIT"—a blend of passion and perseverance towards long-term objectives. We seek individuals who can set and achieve Goals, deliver Results, offer Innovative solutions, and positively impact the Team's culture through collaboration.Role OverviewAs a Senior Security Engineer on our Infrastructure Security team, you'll play a crucial role in safeguarding our applications, platforms, and users. As we scale, we're enhancing our Detection & Response capabilities, transitioning towards a time-based security model that prioritizes speed, signal quality, and resilience as core design principles.

Join Anchorage Digital, the forefront of innovation in the digital asset space, where we are crafting the world’s most sophisticated platform tailored for institutional participation in cryptocurrency.Anchorage Digital is a pioneering crypto platform, empowering institutions to engage with digital assets through advanced custody solutions, staking, trading, governance, and a state-of-the-art security infrastructure. As home to Anchorage Digital Bank N.A., the inaugural federally chartered crypto bank in the U.S., we extend our services globally through Anchorage Digital Singapore, Porto by Anchorage Digital, and other innovative offerings.Backed by prominent investors such as Andreessen Horowitz, GIC, Goldman Sachs, KKR, and Visa, Anchorage Digital boasts a Series D valuation exceeding $3 billion. Since our inception in 2017 in San Francisco, California, we have expanded our presence to offices in New York, Porto, Singapore, and Sioux Falls. Discover more at anchorage.com or connect with us on X @Anchorage and LinkedIn.As an Engineering Lead for the Security Operations team, you will play a pivotal role in fostering the growth of a dynamic engineering organization. Your responsibilities will include recruiting top-tier engineers to fortify our team, mentoring and collaborating with team members to help them achieve their career aspirations, and implementing processes that ensure sustained high performance. Cultivating a vibrant organizational culture is central to your mission as you guide and support your colleagues, refine our strategic roadmap, and actively contribute to our recruiting efforts.In this role, you will also enhance our security roadmap, champion operational excellence in vulnerability management and incident response, develop strategic initiatives for security automation, and leverage your influence to foster sound decision-making throughout the organization.We are committed to continuous growth and impact, providing frameworks for team members to measure their contributions and cultivate their skills within and beyond the Engineering Lead, Security Operations role.

Why Join Brex?Brex is an innovative AI-driven spend management platform designed to empower businesses to manage expenses with confidence. We provide integrated corporate cards, banking solutions, and global payment options, alongside intuitive software for travel and expense management. From startups to large enterprises, clients like DoorDash, Flexport, and Compass leverage Brex to optimize spending, lower costs, and enhance efficiency worldwide.Joining Brex means embracing challenges, pushing boundaries, and collaborating with industry leaders. We are dedicated to fostering a diverse and inclusive culture where your potential is only limited by your aspirations. We equip you with the necessary tools, resources, and support to advance your career.Engineering at BrexOur engineering culture focuses on building scalable systems with intention and speed. Our teams, spanning Software, Data, Security, and IT, work with high autonomy and deep collaboration. We confront challenging technical problems, take ownership of outcomes, and strive for excellence across all levels—from architecture to deployment. Here, engineering is regarded as a craft, and builders evolve into leaders.Your RoleAs a Senior Application Security Engineer, you will be pivotal in identifying and addressing security vulnerabilities within the Brex platform. Your responsibilities will include conducting code and design reviews, penetration testing, and managing vulnerabilities. You will also develop and maintain tools for static and dynamic testing of the platform, ensuring secure developer workflows. You will collaborate closely with teams across Security Operations, GRC, Product Security, Front End Platform, and IT Infrastructure.We seek individuals with a robust background in penetration testing and a proven track record of uncovering vulnerabilities in complex systems. Your ability to craft exploits that highlight business risk will be essential. This role demands a collaborative spirit, as you will engage with various engineering teams throughout Brex. Your enthusiasm for diverse perspectives and needs is crucial as we build world-class financial services with top-tier security.Brex is at the forefront of AI-driven financial services for dynamic companies such as Coinbase, Robinhood, and Anthropic. As we integrate AI across our product suite, this role will have the chance to significantly influence our approach.

Astranis is on the forefront of satellite technology, developing advanced satellites designed for high orbits that expand humanity’s reach into the solar system. Our innovative satellites deliver dedicated, secure communication networks to a diverse range of clients, including large enterprises, sovereign governments, and the US military. With five satellites currently in orbit and numerous launches planned, we are proudly managing a backlog exceeding $1 billion in commercial contracts.Astranis is the go-to satellite communications partner for clients with rigorous demands for uptime, data security, and network customization. Having raised more than $750 million from some of the most recognized investors, including Andreessen Horowitz, Blackrock, and Fidelity, we boast a talented team of 450 engineers and entrepreneurs. Our operations are based in a state-of-the-art 153,000 sq. ft. facility in Northern California, USA.Senior Product Security EngineerAs a Senior Product Security Engineer at Astranis, you will leverage your extensive software engineering expertise with a strong focus on security. You will be tasked with designing and building secure systems, specializing in critical areas such as cryptography, Public Key Infrastructure (PKI), and zero trust architectures. Your role will encompass evaluating processes, operating systems, and applications from a security-first engineering perspective. While your primary responsibility will be to develop secure software, you will also play a key role in identifying vulnerabilities, conducting risk analyses, and leading thorough security reviews.

About UsTriumph Arcade revolutionizes mobile gaming by allowing players to wager and win real money, engage in mass multiplayer games, and compete in social tournaments. Our app has become the leading choice in its App Store category, showcasing remarkable month-over-month growth in both revenue and active player engagement. As we continue to innovate and expand, we're excited to introduce new products, including Rips, our collectibles app, which has already gained significant traction.Supported by esteemed venture capitalists such as Goodwater Capital, General Catalyst, and DraftKings Drive Fund, Triumph is on a hyper-growth trajectory.The RoleAs our Founding Security Engineer, you will play a pivotal role in shaping and implementing the security framework that safeguards Triumph’s players, funds, and data across all platforms. Your expertise will ensure Triumph's resilience against technical failures, credential compromises, or security incidents, thereby protecting our assets and maintaining operational viability.You will be the primary authority on security for our backend systems, mobile applications, infrastructure, and internal tools, establishing the standards for security practices at Triumph. This position reports directly to our CTO and Co-Founder, Jared Geller.What You’ll DoIdentity, Access & Privilege Escalation - Manage all service accounts, IAM, and privilege elevation systems within the production infrastructure.Blast Radius & Recovery Guarantees - Oversee disaster recovery design and execution, ensuring that no infrastructure failure or security incident can lead to irreparable loss of critical data, funds, or system integrity. Set and enforce recovery point (RPO) and recovery time (RTO) objectives for all crucial data systems.Audibility & Forensic Readiness - Ensure all security actions in production are auditable, attributable, and easily reconstructable.Compliance - Lead the technical implementation of data protection controls necessary for compliance with GDPR and similar regulations.

At Harmonic Security, we empower teams to safely integrate AI tools by ensuring real-time protection of sensitive data with minimal effort. Our solutions provide enterprises with complete control over their data, preventing leaks and fostering a culture of confident innovation.Our leadership is comprised of seasoned cybersecurity professionals, supported by top-tier investors such as N47, Ten Eleven Ventures, and In-Q-Tel.Our Work Philosophy: AI at the CoreHarmonic's mission is to facilitate the safe and scalable adoption of AI by enterprises. We hold ourselves to this standard, with every team member actively utilizing AI tools to enhance their work, from research and writing to process building and workflow automation. We welcome new hires who bring a curiosity about AI and a readiness to harness its potential to work smarter, faster, and more creatively. Whether it's through experimentation with new tools or the development of entirely new systems centered around AI, we are committed to providing clarity and support for each role.Team OverviewIn this role, you will report directly to the VP of GTM Strategy and Operations, collaborating closely with sales leadership, customer success, tech operations, and finance teams. This cross-functional position places you at the nexus of revenue operations and systems engineering, where you will construct clean, automated, and scalable infrastructures pivotal for our representatives, leaders, and board. Your responsibilities will go beyond mere tool configuration; you will be tasked with architecting, integrating, and coding to ensure a seamless operational flow.Role ResponsibilitiesThis position is designed for an innovative builder who is not interested in maintaining existing systems, but rather identifying and resolving inefficiencies within the go-to-market (GTM) processes through AI and automation.You will take ownership of designing and developing systems, automations, and internal tools that enhance the effectiveness of our GTM teams. This encompasses everything from HubSpot architecture and lead routing to the creation of AI-driven agents for research, data enrichment, and meeting preparation. If your instinct is to leverage AI tools like Claude or Clay rather than defaulting to spreadsheets for manual processes, you will excel in this environment.As Harmonic scales its GTM operations, the systems you implement will play a crucial role in shaping our operational landscape for years to come.

At Discord, we connect over 200 million users each month through shared interests and gaming experiences. With more than 90% of our community engaging in video games, we aim to enhance the gaming experience by providing seamless communication before, during, and after play.We are on the lookout for a skilled Senior Enterprise Security Engineer to join our dynamic security team. Reporting to the Engineering Manager of Enterprise Security, you will lead the charge in implementing and safeguarding Discord’s enterprise environment with a strong emphasis on security and privacy measures. If you have a passion for creating robust security frameworks while ensuring smooth operational workflows, we want to hear from you. Join us in our mission to create a secure environment where data protection is paramount and where innovative solutions thrive.

This position is open to remote candidates across the U.S., with a preference for those located in the San Francisco/Bay Area or Seattle/Bellevue. U.S. citizenship is required.Databricks is on the lookout for a highly skilled and strategic Senior Staff Security Engineer specializing in Incident Response to bolster our Incident Response team. In this critical role, you will make decisions that will significantly influence the long-term success of Databricks' security framework, crafting solutions that pave the way for future opportunities even when paths are unclear. Your contributions will be vital in shaping a multi-year technology strategy for key sectors of our business, involving multiple systems and teams, and consistently delivering large-scale projects aligned with corporate objectives.The Incident Response team is dedicated to swiftly, effectively, and uniformly addressing security threats, incidents, and investigations to safeguard our customers, employees, and enterprise data. Utilizing Databricks' own platform for near-real-time log analytics, alerting, and forensics, we embody a philosophy of "Security for Databricks on Databricks." As a Senior Staff Security Engineer, you will tackle the most challenging Security Incident Response Team (SIRT) tasks, navigate complex, ambiguous problems, and enhance the organization’s efficiency through systems enablement, tool creation, or policy innovation.Your Impact:Strategic Direction & Technical Vision: Influence the organization's roadmap and lead discussions on vital technology domains, fostering adoption and contributing decisions with long-term implications for Databricks' success.Incident Leadership & Crisis Management: Spearhead intricate investigations and impact assessments, executing crisis management through the Incident Management System (IMS). Collaborate with various stakeholders and convey findings to executive leadership, ensuring effective handling of significant security incidents with minimal operational disruption.Advanced Threat Management: Demonstrate expert knowledge across all cloud services utilized by Databricks (AWS, Azure, GCP), possessing a deep understanding of the architecture of essential business components and articulating their security and risk parameters. Propel the creation of a sophisticated threat detection and response program aimed at significantly reducing Mean Time to Detect (MTTD) and Mean Time to Respond (MTTR) to security incidents.Technical Innovation & Automation: Design scalable security solutions that leverage automation to enhance incident response efficiency and effectiveness.

Metriport is looking for a Senior Security Engineer to join the team in San Francisco. The role centers on safeguarding company infrastructure and maintaining the security of sensitive data. Candidates should bring deep experience with security protocols and risk assessment, with a focus on countering new and evolving threats. Key responsibilities Evaluate risks and pinpoint vulnerabilities throughout Metriport's infrastructure Create and apply security measures that protect data integrity and confidentiality Collaborate with colleagues across departments to improve security practices Monitor the latest security threats and adjust strategies as needed Location This role is based in San Francisco.

Join Lightning AI as a Senior Application Security Engineer specializing in the realms of Artificial Intelligence and Machine Learning. In this pivotal role, you'll be responsible for enhancing our application security posture across our innovative platforms. Collaborate with a team of talented engineers to identify vulnerabilities, implement security best practices, and ensure our AI-driven solutions remain robust and secure.

Asana is seeking a passionate and experienced Senior Engineering Manager, Security to lead our dynamic team in San Francisco. In this role, you will be responsible for enhancing our security infrastructure while fostering a culture of innovation and collaboration. This position involves managing a talented team of engineers, guiding them in the development and implementation of security protocols and best practices to protect our users and data.