19 senior security engineer jobs found

Mattermost is the leading collaborative workflow platform for defense, intelligence, security, and critical infrastructure. Trusted by the U.S. Department of War and Fortune 500s, our platform runs on-premises and in private clouds, delivering secure messaging, file sharing, workflow automation, audio/screenshare, and project management—all with full data and operational control. Mattermost powers high-stakes workflows across mission planning, real-time, real-world operations, DevSecOps, incident response, and cyber defense—enabling secure collaboration from tactical edge and DDIL environments to enterprise HQ. Teams operate across web, desktop, and mobile, with embedded interoperability for Microsoft Teams, Outlook, and Microsoft 365. To learn more, visit  www.mattermost.com Mattermost is the secure collaboration platform trusted by Global organizations. Our platform runs on-premises, cloud, and in air-gapped environments, enabling mission-critical workflows from the...

Mattermost is the leading collaborative workflow platform for defense, intelligence, security, and critical infrastructure. Trusted by the U.S. Department of War and Fortune 500s, our platform runs on-premises and in private clouds, delivering secure messaging, file sharing, workflow automation, audio/screenshare, and project management—all with full data and operational control. Mattermost powers high-stakes workflows across mission planning, real-time, real-world operations, DevSecOps, incident response, and cyber defense—enabling secure collaboration from tactical edge and DDIL environments to enterprise HQ. Teams operate across web, desktop, and mobile, with embedded interoperability for Microsoft Teams, Outlook, and Microsoft 365. To learn more, visit  www.mattermost.com   We are hiring a Senior Security Engineer to protect the people, infrastructure, and tooling that goes into building and hosting Mattermost. This is a hands-on, high-impact role at the...

WP Cloud powers WordPress at scale, and security is a critical part of that foundation. We’re expanding our security team to support WP Cloud, while also contributing to the protection and intelligence provided by WPScan and Jetpack Protect . As a Security Researcher, you will analyze vulnerable and malicious code, track emerging threats, and help build the tools and processes that detect, prevent, and remediate malware and other security issues across the WordPress ecosystem. If you have a knack for solving puzzles and a passion for documenting and operationalizing solutions, this is a great opportunity to make a broad impact. The Senior Security Engineer position might be a good fit if you: Enjoy securing and protecting websites and applications. Have at least 3 years of experience as a security researcher, or equivalent experience investigating vulnerabilities, malware, or other threats. Understand threat models, security threats, vulnerabilities, and common...

CloudLinux is a global remote-first company. We are driven by our principles: do the right thing, employees first, we are remote first, and we deliver high-volume, low-cost Linux infrastructure and security products that help companies to increase the efficiency of their operations. Every person on our team supports each other and does what we can to ensure we all are successful.  Check out our website for more information https://cloudlinux.com/ Imunify360 Security Suite is a product of CloudLinux Inc., the maker of the #1 OS in security and stability for hosting providers. Imunify is an innovative security solution designed specifically for shared and VPS/Dedicated servers. The automated, easy-to-use solution with the six-layer approach to security delivers comprehensive and complete attack prevention. What You'll Work On You will own the Node.js Proactive Defense initiative — a new runtime security layer for Imunify360 that brings the same in-process protection...

TuxCare offers a comprehensive portfolio of security solutions for Linux and open-source software designed for enterprise organizations. With TuxCare, companies can automate live vulnerability patching, minimize downtime, ensure security and compliance, and rely on a team with deep expertise in Linux security. The solutions cover the most popular Linux distributions, end-of-life systems, programming languages, and more. Learn more at: https://tuxcare.com/ One of TuxCare’s key products is Endless Lifecycle Support (ELS) , which enables organizations to securely continue using Linux distributions and software languages that have reached end of life or no longer receive standard security updates. ELS delivers vulnerability patches for unsupported versions of CentOS, Ubuntu, Debian, Oracle Linux, as well as for runtimes and frameworks such as PHP, Python, Spring, Angular/AngularJS, Django, and Flask. More details: https://tuxcare.com/endless-lifecycle-support/ Product...

About Acquia Acquia is the digital experience platform built for a world where your audience isn't only human. Its agents too. As AI agents become active participants in how people discover, consume, and act on digital content, Acquia gives enterprise teams the platform to create, manage, and distribute experiences designed for both. Powered by agentic AI that orchestrates — not just advises — Acquia automates complex digital workflows within the governance guardrails large organizations require. The world's #1 Drupal hosting provider, Acquia brings together Content Management, Digital Asset Management, and Product Information Management in a single AI-powered Command Center: Acquia Source. Acquia. Built for every audience, human or otherwise. The Role: Acquia is seeking a Staff AI Engineer to join our AI Platform Engineering team. This is first and foremost a hands-on engineering role — you will spend the majority of your time designing, building, and shipping...

This role is based in Palo Alto, California, and follows a hybrid work model. If you’re excited about helping build a large-scale SaaS platform at an early-stage company and the qualifications below align with your background, we’d love to connect! About Us Endor Labs is building the Application Security platform for the software development revolution. Modern software is complex and dependency-rich, making it increasingly difficult to pinpoint the risks that truly matter. Endor Labs solves this challenge by building a call graph of your entire software estate—enabling teams to clearly identify, prioritize, and fix critical risks faster.  Trusted by companies that are one or one hundred years old, Endor Labs secures code whether it was written by humans or AI, and whether it's 40-year old C++ code or cutting edge Bazel Monorepos. Endor Labs was founded by serial entrepreneurs Varun Badhwar and Dimitri Stiliadis, and is backed by leading VC firms such as Dell Technology...

Mattermost is the leading collaborative workflow platform for defense, intelligence, security, and critical infrastructure. Trusted by the U.S. Department of War and Fortune 500s, our platform runs on-premises and in private clouds, delivering secure messaging, file sharing, workflow automation, audio/screenshare, and project management—all with full data and operational control. Mattermost powers high-stakes workflows across mission planning, real-time, real-world operations, DevSecOps, incident response, and cyber defense—enabling secure collaboration from tactical edge and DDIL environments to enterprise HQ. Teams operate across web, desktop, and mobile, with embedded interoperability for Microsoft Teams, Outlook, and Microsoft 365. To learn more, visit  www.mattermost.com Mattermost is looking for a Senior React Platform Engineer to help us redefine the limits of web application performance and reliability. You will join the Core Web team to lead the evolution of our...

Mattermost is the leading collaborative workflow platform for defense, intelligence, security, and critical infrastructure. Trusted by the U.S. Department of War and Fortune 500s, our platform runs on-premises and in private clouds, delivering secure messaging, file sharing, workflow automation, audio/screenshare, and project management—all with full data and operational control. Mattermost powers high-stakes workflows across mission planning, real-time, real-world operations, DevSecOps, incident response, and cyber defense—enabling secure collaboration from tactical edge and DDIL environments to enterprise HQ. Teams operate across web, desktop, and mobile, with embedded interoperability for Microsoft Teams, Outlook, and Microsoft 365. To learn more, visit  www.mattermost.com Mattermost is seeking a Senior React Native Engineer to join our mobile engineering team and build resilient mobile experiences for mission-critical industries like defense, intelligence, and critical...

  Job Title: Senior SOC Engineer Employment Type: Full-time Work Location: Remote - UK or Ireland About CloudBees CloudBees provides the leading software delivery platform for enterprises, enabling them to continuously innovate, compete, and win in a world powered by the digital experience. Designed for the world's largest organizations with the most complex requirements, CloudBees enables software development organizations to deliver scalable, compliant, governed, and secure software from the code a developer writes to the people who use it. The platform connects with other best-of-breed tools, improves the developer experience, and enables organizations to bring digital innovation to life continuously, adapt quickly, and unlock business outcomes that create market leaders and disruptors. CloudBees was founded in 2010 and is backed by Goldman Sachs, Morgan Stanley, Bridgepoint Credit, HSBC, Golub Capital, Delta-v Capital, Matrix Partners, and Lightspeed Venture...

Job Title: Senior Software Engineer - AI Native Platform Job Type: Full-time Location: Remote - United States (Austin, Dallas, Houston)   NON-NEGOTIABLE: AI-Driven Mindset  |  Daily use of AI coding assistants is a hard requirement. We build AI; we use AI. About CloudBees CloudBees enables enterprises to deliver scalable, compliant, and secure software - empowering developers to do their best work. Seamlessly integrating into any hybrid and heterogeneous environment, CloudBees is more than a tool; it is a strategic partner in your cloud transformation journey, ensuring security, compliance, and operational efficiency while enhancing the developer experience across your entire software development lifecycle. CloudBees supports organizations at every step of their DevSecOps journey, whether using Jenkins on-premise or transitioning software delivery to the cloud. We are helping customers build the future, today. About the Role CloudBees is building the next...

At  WordPress VIP (part of Automattic ), we power the most influential properties on the web, from the White House to Meta and Salesforce. We are looking for a Forward Deployed Engineer (FDE) to join our mission in redefining how the world’s largest enterprises scale. This isn't your typical engineering role; it’s an advanced, consultative position where you operate as a hands-on architect and a growth catalyst. As an FDE, you are the front line of trust, embedded with our most strategic customers to solve high-stakes technical challenges in real-time. By combining engineering excellence with deep customer proximity, you won’t just solve problems for customers, you’ll solve them with them, driving business expansion across the world’s most scaled environments. If you thrive in high-impact, ambiguous environments and want to help define the future of open-source technology at the enterprise level, we want to talk to you. About the Team The Customer Engineering and...

CloudLinux Inc., the maker of the #1 OS in security and stability for hosting providers. It is an innovative security solution designed specifically for shared and VPS/Dedicated servers. The automated, easy-to-use solution with the six-layer approach to security delivers comprehensive and complete attack prevention. Check out our website for more information about our https://cloudlinux.com/ We're looking for an SDET Automation Lead who can transform a technically capable but operationally strained QA team into a strategic, AI-powered quality engineering function. This is the opportunity to fundamentally rethink how we assure quality at scale. What You'll Own 1. Strategy & Architecture: Define key product quality metrics and build a strategic multi-quarter QA roadmap  Execute the defined QA roadmap  Expand test coverage systematically: prioritize by risk, by impact Own the test system infrastructure and the resource strategy 2. People &...

TuxCare is a subsidiary of CloudLinux. It offers a portfolio of security solutions for Linux and open-source software aimed at enterprise organizations. With TuxCare, enterprises can automate live vulnerability patching, minimize downtime, keep their applications secure and compliant, and get support from a team that knows Linux security best – covering the most popular Linux distributions, end-of-life systems, programming languages, and much more. We are looking for an experienced Engineering Manager to take ownership of TuxCare's Language Security Research function — a group of four teams responsible for delivering security patches for end-of-life and non-EOL open-source language runtimes and frameworks. TuxCare's Endless Lifecycle Support (ELS) helps organizations continue using end-of-life software securely. We provide security patches for unsupported versions of Linux distributions and language ecosystems — including Java, JavaScript/Node.js, Python, PHP, Go, Spring,...

About Endor Labs Endor Labs is redefining application security for the era of AI-driven software development. As AI coding agents transform how software is built, the $3 trillion software development stack is undergoing its biggest shift in decades, and security has never been more critical. Endor Labs is at the center of this transformation, generating a complete call graph of the software ecosystem to give teams the clarity to identify, prioritize, and remediate critical risks with speed and confidence. Endor Labs has raised $163M from world-class investors, including DFJ Growth, Lightspeed Venture Partners, Coatue, Salesforce Ventures, Dell Technologies Capital, Section 32, and Citi Ventures. Our platform protects over 5 million applications and runs more than a million scans per week for customers including OpenAI, Cursor, Rubrik, Robinhood, Dropbox, and Snowflake.  The Role As an AI GTM Engineer, you will be the driving force behind Endor Labs’ internal AI...

This role is based in Palo Alto, California, and follows a hybrid work model. If you’re excited about helping build a large-scale SaaS platform at an early-stage company and the qualifications below align with your background, we’d love to connect! About Us Endor Labs is building the Application Security platform for the software development revolution. Modern software is complex and dependency-rich, making it increasingly difficult to pinpoint the risks that truly matter. Endor Labs solves this challenge by building a call graph of your entire software estate—enabling teams to clearly identify, prioritize, and fix critical risks faster.  Trusted by companies that are one or one hundred years old, Endor Labs secures code whether it was written by humans or AI, and whether it's 40-year old C++ code or cutting edge Bazel Monorepos. Endor Labs was founded by serial entrepreneurs Varun Badhwar and Dimitri Stiliadis, and is backed by leading VC firms such as Dell Technology...

Mattermost is the leading collaborative workflow platform for defense, intelligence, security, and critical infrastructure. Trusted by the U.S. Department of War and Fortune 500s, our platform runs on-premises and in private clouds, delivering secure messaging, file sharing, workflow automation, audio/screenshare, and project management—all with full data and operational control. Mattermost powers high-stakes workflows across mission planning, real-time, real-world operations, DevSecOps, incident response, and cyber defense—enabling secure collaboration from tactical edge and DDIL environments to enterprise HQ. Teams operate across web, desktop, and mobile, with embedded interoperability for Microsoft Teams, Outlook, and Microsoft 365. To learn more, visit  www.mattermost.com Mattermost is seeking an experienced and visionary Lead Site Reliability Engineer (SRE) to guide the architecture, reliability, and operational excellence of the infrastructure powering our...

Mattermost is the leading collaborative workflow platform for defense, intelligence, security, and critical infrastructure. Trusted by the U.S. Department of War and Fortune 500s, our platform runs on-premises and in private clouds, delivering secure messaging, file sharing, workflow automation, audio/screenshare, and project management—all with full data and operational control. Mattermost powers high-stakes workflows across mission planning, real-time, real-world operations, DevSecOps, incident response, and cyber defense—enabling secure collaboration from tactical edge and DDIL environments to enterprise HQ. Teams operate across web, desktop, and mobile, with embedded interoperability for Microsoft Teams, Outlook, and Microsoft 365. To learn more, visit  www.mattermost.com Mattermost is seeking a visionary Staff Software Design Engineer (SDE) in Testing Infrastructure to lead a company-wide transformation of test automation and quality engineering . In this highly...

About CloudBees CloudBees enables enterprises to deliver scalable, compliant, and secure software, empowering developers to do their best work.  Seamlessly integrating into any hybrid and heterogeneous environment, CloudBees is more than a tool—it's a strategic partner in your cloud transformation journey, ensuring security, compliance, and operational efficiency while enhancing the developer experience across your entire software development lifecycle. It allows developers to bring and execute their code anywhere, providing greater flexibility and freedom through fast, self-serve, and secure workflows. CloudBees supports organizations at every step of their DevSecOps journey, whether using Jenkins on-premise or transitioning software delivery to the cloud. We’re helping customers build the future, today. About the role CloudBees is evolving beyond traditional UI to create "invisible" and headless software experiences. We are looking for a Staff UX Designer...