Security Engineer, Detection & Response

Join Prophet Security as a Software Engineering Manager for our Platform Team!At Prophet Security, we are revolutionizing the security operations landscape with our AI-powered platform that enhances detection, investigation, and response capabilities. Our mission is to empower security teams to operate without the limitations of overwhelming alert volumes or…

Prophet Security creates automation tools designed for security teams. The company’s platform analyzes security alerts, builds and executes investigative plans, and delivers actionable findings. Security analysts use these results and provide feedback, helping improve automation over time. Prophet Security is led by a founding team with over 30 years of cybersecurity experience from organizations including Abnormal Security, Expel, Mandiant, McAfee, Oracle, Red Canary, Red Hat, Riverbed, and Symantec. Headquarters are in Menlo Park, with a hybrid work model. Role overview This Senior Full Stack Software Engineer role focuses on building the user-facing elements of Prophet Security’s AI SOC platform. As an early engineering team member, there is significant influence over product direction, technical architecture, and team culture. The initial emphasis is on frontend development, designing and implementing interfaces that security analysts use to investigate alerts, review AI-generated findings, and respond to threats. Over time, responsibilities can expand to backend systems, such as APIs, data pipelines, integrations, and services supporting the platform. What you will do Work with design, product, and backend engineers to deliver features for security analysts Collaborate with the security operations team and interact directly with customers to understand practical needs Shape product direction, technical architecture, and engineering practices as part of the early team Requirements Strong, recent experience in modern frontend development Interest in both frontend and backend engineering Comfort working collaboratively in a startup setting Location This position is based in Menlo Park and follows a hybrid work schedule.

About Prophet SecurityAt Prophet Security, we are revolutionizing the way security operations are conducted with our cutting-edge AI-native platform. Our technology accelerates detection, investigation, and response, enabling teams to operate more efficiently without the burden of excessive alerts or disjointed tools. Join our early-stage team comprised of industry veterans from Abnormal Security, Expel, Mandiant, and McAfee, and play a pivotal role in shaping our solutions to enhance customer outcomes.Your ImpactAs a key member of the Core Product Team, you will lead the development of essential investigative features and workflows that drive our AI SOC agent. Your contributions will define the way security analysts engage with and trust our AI-driven investigations, from initial alert triage to complex, multi-stage threat hunting.In your role as Engineering Manager, you will establish and oversee the technical roadmap for Prophet AI's core intelligence capabilities. You will adeptly balance the urgent delivery of customer value with the strategic vision necessary to create the most proficient AI security analyst in the market. Your leadership will directly influence the interaction and trust that security teams place in our AI-driven investigation and response solutions.Your ResponsibilitiesBuild and cultivate a high-performing team of Product engineers, ensuring the hiring of exceptional talent that aligns with our values and elevates our standards.Maintain hands-on engagement with our codebase to uphold technical credibility and a comprehensive understanding of our systems. You’ll be proactive in fixing bugs, adding monitoring, or deploying features as required.Foster a culture of growth through regular coaching and mentorship, setting clear career development paths for each team member.Drive team performance by establishing clear expectations, delivering continuous feedback, and conducting performance reviews that empower engineers to develop their skills.Promote operational excellence by defining SLOs, incident response protocols, and continuous improvement initiatives.What We SeekA minimum of 5 years of experience as an engineering manager, with a track record of successfully leading product, full-stack, or AI/ML engineering teams.A strong technical background, particularly in software development and engineering management.

Mainspring Energy seeks a Principal Cloud Platform Software Engineer based in Menlo Park, CA. The role centers on building and refining cloud-based platforms that power the company's products and services. Key responsibilities Design, develop, and improve core components of the cloud platform Collaborate with engineering, product, and operations teams on technical solutions Create and deliver systems that prioritize scalability and security within the cloud infrastructure Collaboration Frequent teamwork with colleagues from various backgrounds is essential. The goal is to ensure the platform aligns with both business objectives and technical requirements.

Mainspring Energy creates the Mainspring Linear Generator, a power generation solution designed for commercial, industrial, and utility applications. These generators provide local power for uses like EV charging, commercial buildings, data centers, and large-scale grid projects. The Linear Generator operates with a flameless reaction, resulting in nearly zero NOx emissions and compatibility with various fuels. The company is supported by investors including Khosla Ventures, Bill Gates, American Electric Power, Lightrock, and General Catalyst. Mainspring designs, manufactures, and delivers its products across the United States and is preparing for international expansion. The team aims to build a reliable, affordable, and net-zero carbon grid, and is growing quickly within the global electricity equipment market. Mainspring values diverse backgrounds and believes they foster innovation. Core Values Pragmatic Optimism: Combining creativity with practical solutions, the team sees challenges as opportunities for growth. Excellence without Ego: Focused on delivering strong customer experiences, employees apply technical skill with humility and teamwork. Proactive Collaboration: Success depends on engaging with people from different backgrounds and perspectives, building a respectful and inclusive culture. Role overview The Staff Cloud Platform Software Engineer will lead the architecture for Mainspring’s cloud-to-field software systems. This platform enables monitoring, control, and optimization of distributed energy assets for commercial, industrial, and utility clients. The role is central to developing and maintaining the systems that support reliable on-site power delivery through the Linear Generator platform. Location This position is based in Menlo Park, CA.

Be a Part of the Future of Finance.At Robinhood, our mission is to democratize finance for everyone. With an anticipated $124 trillion in assets expected to transition to younger generations over the next 20 years, we stand at the forefront of this monumental wealth transfer. If you’re eager to influence this transformative cultural and financial era, we invite you to explore this opportunity.About Our Team and Your RoleWe are assembling a top-tier team that harnesses cutting-edge technologies to tackle the most pressing challenges in finance. We seek innovative thinkers, adept problem-solvers, and impactful builders. At Robinhood, complacency is not an option; we are where driven professionals achieve remarkable career milestones. Our team is high-performing, nimble, and anchored by strong ethical standards. The expectations are ambitious, and the rewards are equally significant.The Product & Application Security team is dedicated to embedding security into the design, development, and operational phases of our products. Collaborating closely with engineering and business leadership, we shape secure architectures, guide risk-informed decisions, and implement security assurance practices from the onset of the development lifecycle. As Robinhood embraces AI technologies, this team is pivotal in establishing secure AI frameworks, governance, and visibility across the organization!As the Senior Engineering Manager for Product & Application Security, you will define the strategy and oversee the execution of security measures across diverse domains. You will lead and nurture a team of security and software engineers while serving as a technical authority and trusted advisor to senior engineering and business stakeholders. This role encompasses ownership of critical security outcomes end-to-end, including AI platform security, automated security tools, M&A security initiatives, and the refinement of product security review processes, ensuring accountability for both immediate impact and long-term scalability.This position is based in our Menlo Park, CA office, with in-person attendance required at least four days a week.At Robinhood, we recognize the value of in-person collaboration to expedite progress, ignite creativity, and foster community. Our office environment is purposeful, invigorating, and designed to empower high-performing teams.

Workstream is a purpose-driven technology firm dedicated to creating a comprehensive HR, payroll, and hiring platform tailored for the hourly workforce. With 2.7 billion hourly workers—representing 80% of the global workforce—this segment has been largely overlooked by technological advancements, and we believe it deserves better solutions. From our inception, Workstream has been designed with the needs of the hourly workforce in mind, empowering businesses and their employees to thrive.We proudly serve notable clients across various sectors, including well-known brands like Burger King, Carl's Jr./Hardee's, IHOP, KFC, and Culvers. As a rapidly growing Series B company, we are swiftly expanding our product offerings to fulfill our ambitious vision. Our endeavors are supported by prestigious investors and industry leaders such as Founders Fund, BOND, and Coatue.Our diverse team hails from esteemed institutions like UC Berkeley, Cornell, SJTU, Cambridge, and NUS, with rich industry experience from companies such as Tencent, Alibaba, Amazon, and ByteDance. Our engineering team is composed of passionate, talented engineers committed to innovating cloud technology solutions that empower local businesses to flourish and better serve the deskless workforce in their communities. We are currently looking for a skilled Senior Software Engineer to join our expanding engineering team.

Be a Part of the Financial Revolution.Our goal is to make finance accessible to everyone. With an anticipated transfer of $124 trillion in assets passing to younger generations in the coming two decades, we stand at the forefront of a monumental cultural and financial transition. If you are eager to contribute to this pivotal moment in history, we invite you to read on.About Our Team and Your RoleWe are assembling a top-tier team dedicated to applying cutting-edge technologies to tackle the most pressing challenges in finance. We seek imaginative thinkers and adept problem-solvers—individuals who are driven to make a difference. At Robinhood, complacency is not an option; it is a place where ambitious professionals can excel. We are a dynamic team with high ethical standards, where expectations are elevated, and so are the rewards.We perceive security as a challenge of engineering and design rather than merely administrative. We are in search of a lead architect for our innovative automated defense systems. As a Senior Vulnerability Management Engineer, you will evolve our program into a self-sustaining security platform that goes beyond traditional "scan-and-patch" methodologies. Your leadership will drive the transition to an Intelligence-Driven Defense model through the integration of Agentic AI and Machine Learning, automating the identification, prioritization, and mitigation of risks at scale, ultimately reducing security costs for our developers.This position is based in our Menlo Park, CA office, with a requirement for in-person attendance at least three days per week.We believe that in-person collaboration accelerates progress, ignites innovation, and fosters community. Our office environment is deliberately crafted to energize and support high-performing teams.Key ResponsibilitiesStrategic RBVM Vision: Serve as the technical lead, establishing a multi-year strategy and guiding the transition to Risk-Based Vulnerability Management (RBVM), prioritizing vulnerabilities based on actual exploitability and business relevance.Architect Agentic AI Systems: Design and implement AI agents that autonomously triage findings, correlate threat intelligence, and produce actionable remediation solutions (e.g., automated Pull Requests for dependency updates and configuration drift).Develop Exposure Intelligence: Create systems that link vulnerabilities with runtime context to enhance overall security posture.

Be a Part of the Financial Revolution.At Robinhood, our objective is to make finance accessible to everyone. With an anticipated $124 trillion in assets set to be passed down to younger generations in the coming two decades, we are positioned at the forefront of a monumental cultural and financial transition. If you are excited about playing a vital role in this change, we want to hear from you.About Our Team and Your RoleWe are assembling a top-tier team dedicated to applying cutting-edge technologies to resolve the world’s most pressing financial challenges. We seek innovative thinkers and adept problem-solvers—individuals who are driven to make a significant impact. Robinhood is a dynamic environment where ambitious professionals thrive and deliver their best work. Our high-performing team is guided by strong ethical principles, with high expectations and equally high rewards.The Product and Application Security team is responsible for establishing and managing systems that empower engineers to identify and mitigate security risks early in the software development lifecycle. Our focus is on creating actionable safeguards—such as libraries and frameworks—that make secure development the standard practice. You will collaborate closely with engineering teams to minimize risks while facilitating efficient product development.As a Staff Security Engineer, you will act as a technical leader and expert, guiding the integration of security into development practices throughout Robinhood. You will be responsible for designing and implementing systems that provide clear security guidelines for engineers, advising on architecture and threat models, and influencing long-term security strategy. This position offers a high-impact opportunity to shape the future of application security within our organization!This role is based in our Menlo Park, CA office, with a requirement for in-person attendance at least three days per week.At Robinhood, we value in-person collaboration as a means to accelerate progress, ignite innovation, and foster community. Our office environment is intentionally crafted to be stimulating and fully supportive of high-performing teams.

Join our innovative team at januaryinc as a Lead Backend Platform Engineer! In this pivotal role, you will drive the development of scalable backend systems that support our industry-leading products. Your expertise will guide a talented team as we push the boundaries of technology and deliver exceptional user experiences.

Be a Part of Shaping the Future of Finance.At Robinhood, our mission is to democratize finance for everyone. With an estimated $124 trillion set to be transferred to younger generations in the coming decades, you have the chance to be at the forefront of this monumental shift. If you're eager to make a significant impact in this evolving financial landscape, we want you to join us.About the Team & RoleWe are assembling a distinguished team dedicated to applying innovative technologies to tackle the most pressing challenges in finance. We seek visionary thinkers, adept problem solvers, and impactful builders. Robinhood is not for the complacent; it’s a place where ambitious individuals excel in their careers. Our Growth Engineering team focuses on developing systems that facilitate new customer acquisition through SEO, paid marketing, and user incentives. We collaborate closely with Product, Data Science, Marketing, and Technology to enhance conversion rates and boost funded accounts. This newly established team presents a unique opportunity to influence technical foundations and achieve quantifiable growth results!As an Engineering Manager, you will steer the technical direction and execution strategy across multiple growth initiatives. Collaborating with Product teams, you will define a targeted roadmap, ensure the delivery of robust scalable systems, and cultivate a strong team culture centered on accountability and results. Your contributions will play a vital role in advancing Robinhood's growth strategy both domestically and internationally.This position is based in our Menlo Park, CA office, with in-person attendance required at least four days per week. We believe that in-person collaboration accelerates innovation and fosters community. Our office environment is designed to be energizing and fully supportive of high-performing teams.

About Periodic Labs Periodic Labs combines artificial intelligence with the physical sciences to advance scientific discovery. The team works on developing new models and tools that push the boundaries of research. Backed by strong funding and growing quickly, team members have ownership over their work and solve problems without bureaucratic barriers. The company values curiosity, practical solutions, and the adoption of new scientific methods and technologies. Role Overview: Lead Security Engineer The Lead Security Engineer will design, implement, and manage security practices across Periodic Labs. This role is responsible for protecting the systems that support research and daily operations, including cloud platforms, clusters, internal developer tools, identity systems, secrets management, SaaS integrations, and lab infrastructure. Collaboration with research, infrastructure, lab, and operations teams is essential to reduce risk and support scientific experimentation. This is a hands-on position. The Lead Security Engineer will build automation, deploy security controls, lead incident responses, and help raise the standard for secure system design. The role also involves setting up practical security protocols and developing tools to make secure practices easier for everyone at Periodic Labs. Key Responsibilities Oversee security architecture for cloud environments, Kubernetes, internal services, and research infrastructure Develop and manage identity and access systems for both people and workloads, including SSO, MFA, RBAC, SCIM lifecycle automation, workload identity, and least-privilege access Improve secrets management using KMS, GitHub and CI credentials, 1Password or similar tools, and secure service-to-service authentication Strengthen software delivery and developer workflows, focusing on CI/CD, dependency security, build provenance, artifact integrity, and secure GitHub administration Conduct threat modeling, secure design reviews, and risk assessments for internal platforms, lab systems, and any externally exposed products Build detection and response capabilities across cloud, identity, network, and endpoint telemetry; manage incidents through containment, root cause analysis, and remediation Lead vulnerability management and remediation automation for hosts, containers, dependencies, SaaS, and infrastructure-as-code Work with infrastructure and lab engineering teams on segmentation, remote access, firewall policy, certificates, DNS, and secure device-to-cloud patterns Set practical security standards, run tabletop exercises, and help the company make informed security decisions without unnecessary overhead Location This role is based in Menlo Park.

At GRAIL, our mission is clear: to detect cancer at its earliest stages, offering a chance for successful treatment. We are dedicated to altering the course of cancer mortality and uniting various stakeholders to embrace groundbreaking, safe, and effective technologies that revolutionize cancer care.As a pioneering healthcare organization, we are at the forefront of innovative technologies aimed at early cancer detection. Our multidisciplinary team consists of scientists, engineers, and physicians who harness the power of next-generation sequencing (NGS), large-scale clinical studies, and cutting-edge data science to tackle one of medicine's most formidable challenges.Headquartered in the vibrant Bay Area, GRAIL also has locations in Washington, D.C., North Carolina, and the United Kingdom, backed by prominent global investors and leaders in the pharmaceutical, technology, and healthcare sectors.To learn more about our transformative work, please visit grail.comWe are seeking a driven and impactful Senior Staff Product Security Engineer to be a pivotal technical leader in advancing our product security initiatives across the organization. Reporting to the Director of Product Security, you will play an essential role in ensuring the security and resilience of our products, vital to GRAIL's life-saving mission.As a senior individual contributor, you will lead the technical execution of our Product Security roadmap, collaborating closely with Engineering and Product teams, and mentoring fellow security engineers. Your influence will extend to architectural and development decisions throughout the product lifecycle, enabling teams to navigate the evolving threat landscape while ensuring efficient delivery in a regulated environment.Flexible Work Arrangement – Menlo Park (MPK) – 3 Days in OfficeThis position is located in Menlo Park, California, transitioning to Sunnyvale, California in Fall 2026. GRAIL offers a flexible work environment, allowing for a mix of on-site and remote work. Currently, our policy requires a minimum of 60% (24 hours) of your workweek to be on-site, with specific schedules determined collaboratively with your manager to align with team and business needs.

Be a Pioneer in the Future of Finance.Join us at Robinhood, where our mission is to democratize finance for everyone. With an anticipated $124 trillion of wealth set to transfer to younger generations over the next two decades, we're at the forefront of this historic shift. If you're ready to play a pivotal role in transforming the financial landscape, we want to hear from you!About Our Team and Your RoleWe are assembling a top-tier team dedicated to tackling the most pressing financial challenges using cutting-edge technologies. We're seeking innovative thinkers and builders eager to make a substantial impact. At Robinhood, you'll take ownership of your work and help enhance financial accessibility for all while upholding high standards, accountability, and a profound commitment to security and ethics in our creations.The Red Team's objective is to pinpoint and mitigate genuine security threats across Robinhood by emulating adversary tactics and testing our defenses. As a Staff Offensive Security Engineer, you'll lead security evaluations across applications, infrastructure, and physical environments. You will closely collaborate with engineering and security teams to bolster detection and response strategies, prioritize risks, aid in remediation efforts, and create tools and techniques that enhance our security testing processes. Your contributions will be vital in ensuring the safety and reliability of our products, which serve millions of customers.This role is based in our Menlo Park, CA office, with in-person participation required at least 3 days per week.Robinhood champions the benefits of in-person collaboration to accelerate innovation, spark creativity, and foster community. Our office environment is designed to be engaging and supportive for high-achieving teams.

Robinhood is seeking a Software Engineering Manager to guide a team of engineers working on the company’s financial platform in Menlo Park, CA. This position involves leading the full development lifecycle and ensuring the delivery of reliable software solutions. Role overview The manager will oversee engineering projects from planning through execution. Collaboration with product, design, and other cross-functional teams is a key part of the role. The focus is on driving technical quality and aligning work with Robinhood’s broader goals. Team leadership Mentor and support engineers in their growth Encourage a collaborative and improvement-focused team culture Help define and evolve the technical roadmap What you will do Oversee software development and delivery Work closely with other teams to meet product and technical objectives Promote high standards for engineering practices

About Periodic LabsAt Periodic Labs, we combine advanced artificial intelligence with physical sciences to develop cutting-edge models that foster groundbreaking scientific discoveries. With strong financial backing and rapid growth, we empower our team members to take ownership of their roles, encouraging creative problem-solving without the constraints of bureaucracy. Our culture thrives on continuous learning and innovation, as we embrace new tools and scientific advancements to drive our mission forward.About the RoleIn this pivotal position, you will spearhead the design, implementation, and management of Periodic Labs’ IT and security frameworks. You will take charge of identity management, endpoint security, network security, and SaaS security, ensuring that our internal workflows are seamless and secure, which in turn allows our researchers to maintain high productivity levels.Your responsibilities will include writing automation scripts, integrating various systems, and establishing high benchmarks for security, reliability, and user experience. Collaborating closely with our research, infrastructure, and operations teams, you will ensure that all environments—spanning laptops, clusters, and scientific laboratories—are secure, compliant, and efficient.

Blockstream, established in 2014 by Dr. Adam Back and a dedicated team of cryptographers and engineers, is at the forefront of Bitcoin innovation. We are committed to revolutionizing the financial landscape through Bitcoin and are recognized as the leading Bitcoin company, offering state-of-the-art infrastructure solutions for enterprises, institutions, and individual users. Our offerings include advanced Bitcoin self-custody solutions, Bitcoin financial products, second-layer scaling technologies, and robust blockchain infrastructure.We are in search of a Platform Architect to architect and enhance the foundational structures of our core platforms. This pivotal role encompasses comprehensive system design, guaranteeing scalability, reliability, security, and developer efficiency throughout Blockstream’s infrastructure and product suite.In collaboration with engineering, security, product teams, and leadership, you will design distributed systems that facilitate high-value financial applications while adhering to Bitcoin’s fundamental principles of decentralization and trust minimization.

Role overview Gavin de Becker & Associates is hiring a Security Specialist based in Menlo Park, CA. The position centers on safeguarding clients and ensuring secure environments by evaluating risks and applying practical security solutions. Key responsibilities Evaluate potential security risks in various client settings Apply and oversee safety protocols to address identified risks Work closely with team members and stakeholders to resolve security issues Contribute to ongoing efforts that help maintain a safe environment for both clients and staff

Join our innovative team at Robinhood as a Backend Software Engineer, where you will play a pivotal role in building scalable systems that empower our users to take control of their financial futures. We are looking for passionate engineers who thrive in a fast-paced environment and are excited about leveraging technology to create impactful solutions.