Senior/Staff Platform Engineer - Security

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.

About Cogent SecurityCogent Security is dedicated to thwarting breaches and combating cybercrime through cutting-edge innovations in generative AI systems. We are pioneering the world's first AI cyber taskforce, which comprises AI agents capable of human-like reasoning and execution of cybersecurity tasks, autonomously safeguarding organizations against emerging threats. Our technology is currently being utilized by some of the globe's most prestigious institutions, including public companies, elite universities, and Fortune 500 corporations across various sectors.Founded by a dynamic team of former engineering and product leaders, Cogent brings together decades of expertise in cybersecurity and technology. Our initial team operates entirely in-person from San Francisco and New York, consisting of top-tier software engineering and machine learning talent from renowned companies such as Abnormal Security, Coinbase, Microsoft, Tesla, and Stripe. To fuel our ambitious growth trajectory, we have successfully secured significant Seed funding from leading investors and angels in the fields of AI, cybersecurity, and enterprise software.As we pursue our mission, we continually strive to achieve the following core values:Ambition for Excellence: We set high standards and consistently measure our progress against them.Customer Centricity: We are deeply committed to understanding our customers' challenges and innovating to provide optimal solutions.Intellectual Honesty: We welcome difficult conversations and actively seek to uncover the truth.Intentionality: We exercise sound judgment and are mindful of our decisions.Extreme Ownership: We take responsibility for our work and never use the phrase “not my problem.”Velocity / Bias for Action: We prioritize action and do not procrastinate on tasks that can be accomplished today.As we expand our founding team, we seek talented and driven individuals eager to make impactful contributions in the Applied AI domain!

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 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 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.

About Cogent SecurityCogent Security is an innovative Applied AI Lab dedicated to developing the next generation of AI agents for cybersecurity. As cyber threats evolve, so do our defenses. Our 'AI Taskforce' analyzes vast amounts of enterprise data to proactively address potential breaches before they can escalate.To maintain our edge, we integrate pioneering research with practical implementation. In addition to our core product initiatives, Cogent Research acts as our applied AI laboratory, fueling our ability to create truly intelligent security workflows.Since our launch, Cogent has rapidly expanded, collaborating with Fortune 500 companies to secure some of the world's most intricate production environments.Supported by Greylock, we've assembled a team of exceptional talent in applied AI, including individuals from:Renowned universities such as Stanford, Berkeley, Penn, Duke, Carnegie Mellon, and WaterlooHigh-growth companies including Scale AI, Databricks, Stripe, Tesla, and CoinbaseLeading cybersecurity experts from Wiz, Abnormal AI, and ZscalerPrestigious research institutions like DeepMind and SAILAbout the RoleIn the role of Senior Frontend Engineer, you will take ownership of the frontend platform and user experience, empowering customers to visualize, understand, and act upon complex security data with assurance.This position is classified as Staff+ level; you will have previously operated as a Staff, Senior Staff, or Principal Frontend Engineer and will be eager to define the technical pathway for a new platform. Your responsibilities will include designing frontend infrastructure, developing 'golden' component libraries, and enhancing the platform’s AI capabilities, all while delivering customer-facing features.You will balance in-depth architectural design with hands-on development, ensuring our frontend stack is both sophisticated and robust as we scale. Over time, you will play a key role in mentoring junior frontend engineers, laying the groundwork for a strong team based on the foundations you establish.

Cogent Security seeks a Technical Account Manager based in San Francisco, CA. The focus of this position is to develop and maintain strong relationships with clients, ensuring their technical needs are met with care and attention. Key responsibilities Serve as the primary point of contact for assigned clients, addressing technical questions and concerns as they arise. Guide new customers through the onboarding process, helping them become familiar with Cogent Security’s solutions. Provide ongoing support, troubleshooting, and tailored advice to meet each client’s unique requirements. Work to maintain customer satisfaction and foster long-term partnerships.

Join Airwallex as a Staff Data Platform EngineerAt Airwallex, we are redefining the financial landscape for businesses operating on a global scale. As the only unified payments and financial platform, we provide over 200,000 businesses, including industry leaders like Brex and SHEIN, with comprehensive solutions for managing payments, spending, and treasury functions seamlessly. Our cutting-edge technology empowers companies to thrive in a competitive environment.Founded in Melbourne and with a growing team of over 2,000 talented professionals across 26 locations worldwide, we have achieved a valuation of $8 billion and are backed by top-tier investors such as T. Rowe Price and Visa. Join us to be part of a visionary team building the future of global banking.

Join Composio, where we are revolutionizing the infrastructure that empowers agents to seamlessly connect with the tools you utilize daily, including GitHub, Gmail, Notion, Salesforce, and more. Our dedicated team of engineers is tackling challenges from context management to search optimization, striving to create the most efficient bridge between your agents and their essential tools.Having secured a $25M Series A funding from Lightspeed, along with support from prominent angels such as Guillermo Rauch (CEO of Vercel), Dharmesh Shah (CTO of HubSpot), and Gokul Rajaram, we have experienced significant growth, tripling our ARR this year. Our customers range from fellow Y Combinator alumni to established companies like Wabi, Glean, and Zoom.Your ResponsibilitiesEnhance our platform primitives and APIs, including authentication, automatic refreshes, triggers, tool search, planning, and sandbox management.Oversee multiple runtimes for code execution across Lambdas and Firecracker.Optimize performance through tracing, CPU/heap profiling, database query enhancements, and workflow optimization.Collaborate closely with product engineering teams and customers to effectively manage their workloads and improve our product.Produce clear and comprehensive documentation.Essential QualificationsCore Platform Engineering Skills: Extensive experience in scaling backend distributed systems, maintaining reliable systems while delivering quickly, and managing multiple platform components simultaneously.AI Expertise: Familiarity with building and working with language models.Linux Proficiency: Comfortable working in a Linux environment.Effective Communication: Ability to write well-structured documentation and articulate complex ideas clearly.Interpersonal Skills: Cultivate trust and acknowledge areas for growth.Preferred QualificationsExperience with cloud infrastructure and serverless architecture.

Who Are We?Postman is recognized as the leading API platform globally, empowering over 45 million developers and 500,000 organizations, including 98% of the Fortune 500. We are dedicated to transforming the API landscape by simplifying every phase of the API lifecycle, fostering collaboration, and enabling users to create superior APIs with increased efficiency.Headquartered in San Francisco, we also have offices in Boston, New York, Austin, Tokyo, London, and Bangalore—our founding city. As a privately held company, we have received support from notable investors such as Battery Ventures, BOND, Coatue, CRV, Insight Partners, and Nexus Venture Partners. To learn more about our vision, visit postman.com or connect with us on X at @getpostman.P.S: We highly recommend reading The 'API-First World' graphic novel to gain insights into our vision at Postman.The OpportunityAs a Staff Engineer for the Desktop Platform, you will lead the technical direction of our Electron-based desktop application, which is utilized by over 40 million developers worldwide. Your expertise will influence its architecture, performance, and security for the foreseeable future.This role is primarily focused on individual contributions. You will engage in both design and implementation while serving as the technical cornerstone for our Desktop Platform. Your responsibilities will include defining architecture, developing essential features, and mentoring fellow engineers, ultimately guiding Postman’s evolution across various desktop operating systems.About the TeamThe Client Platform organization is tasked with providing a streamlined pathway for developing, testing, and releasing Postman’s web and desktop applications. We manage the frameworks, SDKs, build tools, shared libraries, and infrastructure that our product engineers depend on daily. Our platform serves as the foundation for hundreds of Postman engineers to deliver new features and enhancements to over 40 million users.Within this group, the Desktop Platform team focuses on Postman’s integration with Electron and OS-level infrastructure. Our team ensures that Postman is easily installable, consistently updatable, and performs optimally across Windows, macOS, and Linux. We collaborate closely with the Client SDK and Build/Release teams to guarantee a seamless user experience.What You’ll DoLead the architecture of Postman’s Electron-based desktop application.Design and implement core desktop functionalities, including installers, auto-updates, and OS integrations.Enhance performance across desktop platforms, optimizing startup times, memory, and CPU utilization.

About Us:At Parafin, we are dedicated to empowering small businesses, which are the foundation of our economy. Traditional banking solutions often fall short in supporting these enterprises, and that's where we come in. We create technology that simplifies access to essential financial tools for small businesses through their existing sales platforms.We collaborate with notable partners such as DoorDash, Amazon, Worldpay, and Mindbody to provide fast, flexible funding options, spend management solutions, and savings tools to small business users via seamless integration. Parafin handles the complexities of capital markets, underwriting, servicing, compliance, and customer support for our partners.Our team consists of innovators from leading companies like Stripe, Square, Plaid, Coinbase, and Robinhood, all driven by a shared passion for developing tools that foster the success of small businesses. With backing from prominent venture capital firms including GIC, Notable Capital, Redpoint Ventures, Ribbit Capital, and Thrive Capital, Parafin is a Series C company that has raised over $194M in equity and $340M in debt facilities.Join us in creating a future where every small business has the financial resources they need.About the PositionWe are seeking an experienced security-focused engineer to enhance and scale Parafin's security measures across our cloud and platform environments. Our Security and Infrastructure team is responsible for the foundational systems that power all of Parafin—from compute and networking to identity management and compliance. You will play a crucial role in ensuring these systems are secure, reliable, and compliant.In this role, you will design and implement controls, tools, and processes that maintain the resilience and compliance of our infrastructure, all while enabling developers to operate swiftly and safely. You will collaborate closely with various engineering and compliance teams to bolster our approach to access management, application security, threat monitoring, and incident response.

Join runlayer as a Member of the Technical Staff specializing in Security, where you will play a pivotal role in safeguarding our systems and data. You will collaborate with a talented team of engineers to design and implement security protocols, ensuring the integrity and confidentiality of our information. This is an exciting opportunity to work in a fast-paced environment that values innovation and continuous improvement.

About Us:At Ambience Healthcare, we are more than just a technology company; we are pioneers in creating AI-driven solutions that bring the human touch back to healthcare. Our innovative platform is designed to reduce administrative burdens, allowing healthcare providers to concentrate on what truly matters: delivering exceptional patient care.We specialize in real-time, coding-aware documentation and clinical workflow support across a variety of healthcare settings, including ambulatory, emergency, and inpatient environments, working with top health systems across North America.Our team embodies a culture of extreme ownership and collaboration, striving to develop the best solutions for our partners and tackling vital challenges in the healthcare industry. We prioritize transparency, positivity, and deep thinking, holding ourselves to high standards because we recognize the significance of the problems we address.Ambience has been awarded #1 for Improving the Clinician Experience in the KLAS Research Emerging Solutions Top 20 Report, recognized by Fast Company as a leading tech innovator, named one of the best AI companies in healthcare by Inc., and selected as a LinkedIn Top Startup for both 2024 and 2025. Our growth is backed by eminent investors such as Oak HC/FT, Andreessen Horowitz (a16z), OpenAI Startup Fund, and Kleiner Perkins — and we are just beginning our journey.The Role:As a Staff Security Engineer, you will play a crucial role in safeguarding our platform within some of the most security-sensitive health systems in the nation. Security must be ingrained in our product from the ground up, not merely an afterthought.In this position, you will oversee the systems that shield our platform at scale, focusing on application security, cloud security, detection and response, and foundational security primitives that other teams rely on. Your responsibilities will include designing security frameworks that make secure choices the default, fortifying our infrastructure against potential threats, and collaborating with engineering teams to minimize risks effectively.This is a hands-on role; you will engage in coding, system design, and lead comprehensive security initiatives that foster enterprise trust and facilitate customer growth.What You’ll Own:Application & Platform Security — Develop and implement secure-by-default patterns across our backend and infrastructure, identifying and rectifying vulnerabilities in application logic, APIs, and data flows.Cloud & Infrastructure Security — Manage the security posture of our cloud environment, focusing on IAM, network boundaries, secrets management, and secure service-to-service communication.Detection & Incident Response — Construct and maintain detection pipelines, alerts, and runbooks, spearheading investigations to ensure swift and effective incident response.

Join Our Innovative TeamAs we approach the year 2026, we face what is being called the "infinite software crisis." At Sazabi, we are dedicated to solving this issue with our cutting-edge AI-native observability platform designed specifically for agile engineering teams.Our platform empowers teams to effortlessly inquire about their production systems using natural language, visualize real-time data, and swiftly identify root causes—10 times faster than traditional methods. No cumbersome instrumentation, no dashboard setups, and no alert configurations required—just straightforward solutions.We are proud to have the support of industry leaders from premier AI companies such as Vercel, Graphite, Daytona, Browserbase, LangChain, Mastra, Replit, and others.

Join Our Mission-Driven Team at PayJoyAt PayJoy, we are committed to revolutionizing credit access for underserved communities in emerging markets, enabling them to achieve financial independence and prosperity. Our innovative secured credit technology serves as a gateway for new customers to engage with the credit system, providing them with opportunities through point-of-sale financing and credit cards. Our solutions empower our clients as micro-entrepreneurs and offer a safety net during challenging times. With advanced machine learning, data science, and anti-fraud AI, we proudly serve over 18 million customers and maintain a strong profitability trajectory for sustainable growth.About the RoleAs a Staff Data Engineer, you will play a pivotal role in ensuring our data infrastructure is robust, scalable, and secure. Your responsibilities will include designing and maintaining real-time and batch processing systems, developing a data strategy aligned with business objectives, ensuring data integrity and security, optimizing database performance, automating workflows for enhanced efficiency, and leading cross-functional teams to uphold best practices in data management.

Join middesk as a Software Engineer specializing in our Data Platform, where you will play a pivotal role in building robust systems that empower our data-driven initiatives. You will collaborate with cross-functional teams to design, implement, and optimize data solutions that enhance our products and services.

Airtable is the leading no-code app platform that empowers individuals closest to their work to expedite critical business processes. Over 500,000 organizations, including 80% of the Fortune 100, depend on Airtable to revolutionize their workflows.At Airtable, we are dedicated to democratizing software development—enabling anyone to create powerful, adaptable tools without needing to code. Our transition to an AI-native platform allows customers to generate complete applications and seamlessly integrate AI agents into their operations. Data engineering is pivotal in this transformation, providing the insights necessary for our teams to enhance user experiences, gauge agent effectiveness, and assess business performance on a large scale.As a Data Engineer at Airtable, you will play a vital role in our data engineering initiatives. You'll design and manage essential data pipelines that facilitate informed decision-making, collaborate with company leaders to develop scalable data solutions, and implement innovative alerting and visualization systems.

Join Our Mission as a Staff Software EngineerAs a pivotal member of our Data Engineering team at Prosper, we are seeking a talented Enterprise Python Expert. Your primary responsibility will be to enhance our data ecosystem by designing and implementing high-quality software solutions. You will focus on building robust data pipelines and services while optimizing system architecture and ensuring clean, scalable code development within our Google Cloud Platform (GCP) environment.

Technical Staff MemberAt humans&, we are dedicated to pioneering a human-centric approach to artificial intelligence. Our mission is to redefine AI by placing individuals and their interpersonal connections at the heart of our innovations.We invite talented researchers and engineers who have made significant contributions to the cutting-edge of AI to join our dynamic team. If you excel in your field and are driven to innovate, we want to hear from you!