14 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 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 intersection...

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...

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 seeking a Senior React Native Engineer to take ownership of the Mattermost mobile experience for teams working in defense, intelligence, and critical infrastructure. This role sits at the...

What We’re Building Honeycomb is a service for the near and present future, defining observability and raising expectations of what developer tools can do! We’re working with well known companies like HelloFresh, Slack, LaunchDarkly, and Vanguard and more across a range of industries. This is an exciting time in our trajectory, we’ve closed Series D funding, scaled past the 200-person mark, and were named to Forbes’ America’s Best Startups of 2022 and 2023!    If you want to see what we’ve been up to, please check out these blog posts and Honeycomb.io press releases .    Who We Are We come for the impact, and stay for the culture! We’re a talented, opinionated, passionate, fiercely inclusive, and responsible group of bees. We have conviction and we strive to live  our values  every day. We want our people to do what they truly love amongst a team of highly talented (but humble) peers.   How We Work We are a fully distributed company, which means we...

What We’re Building Honeycomb is a service for the near and present future, defining observability and raising expectations of what developer tools can do! We’re working with well known companies like HelloFresh, Slack, LaunchDarkly, and Vanguard and more across a range of industries. This is an exciting time in our trajectory, we’ve closed Series D funding, scaled past the 200-person mark, and were named to Forbes’ America’s Best Startups of 2022 and 2023!    If you want to see what we’ve been up to, please check out these blog posts and Honeycomb.io press releases .    Who We Are We come for the impact, and stay for the culture! We’re a talented, opinionated, passionate, fiercely inclusive, and responsible group of bees. We have conviction and we strive to live  our values  every day. We want our people to do what they truly love amongst a team of highly talented (but humble) peers.   How We Work We are a fully distributed company, which means we...

CloudLinux and TuxCare build Linux, security, and enterprise infrastructure products used by hosting providers, software vendors, and engineering teams around the world. The Infrastructure team runs the platforms behind that work: data centers, public cloud providers, OpenNebula, Kubernetes/Talos, Ceph, CI/CD, observability, identity and access systems, and internal services. We are hiring a hands-on Senior Cloud Network Engineer to own and evolve the network layer of our hybrid infrastructure. This is an engineering role with real architecture ownership: you will design, implement, monitor, document, automate, secure, and troubleshoot production networking across data centers, cloud regions, Kubernetes/Talos clusters, OpenNebula environments, and bare metal. This is a technical ownership role. It is not a diagrams-only architecture position, and it is not a people-management role. You will define technical solutions, ship production changes, verify behavior, support...

TuxCare 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, Angular, Django, Flask, and more....

TuxCare is a subsidiary of CloudLinux. It offers a portfolio of security solutions for Linux and open-source software aimed at enterprise organisations. With TuxCare, enterprises can automate live vulnerability patching, minimise 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. For more information, visit our website: https://tuxcare.com/ One of TuxCare's key products is Endless Lifecycle Support (ELS) , which enables organisations 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:...

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...

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 fully remote US Defense Software Engineering Lead anywhere in the United States to lead a small, agile development team dedicated to building mission-critical capabilities on...

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...

What We’re Building Honeycomb is a service for the near and present future, defining observability and raising expectations of what developer tools can do! We’re working with well known companies like HelloFresh, Slack, LaunchDarkly, and Vanguard and more across a range of industries. This is an exciting time in our trajectory, we’ve closed Series D funding, scaled past the 200-person mark, and were named to Forbes’ America’s Best Startups of 2022 and 2023!    If you want to see what we’ve been up to, please check out these blog posts and Honeycomb.io press releases .    Who We Are We come for the impact, and stay for the culture! We’re a talented, opinionated, passionate, fiercely inclusive, and responsible group of bees. We have conviction and we strive to live  our values  every day. We want our people to do what they truly love amongst a team of highly talented (but humble) peers.   How We Work We are a fully distributed company, which means we...

What We’re Building Honeycomb is a service for the near and present future, defining observability and raising expectations of what developer tools can do! We’re working with well known companies like HelloFresh, Slack, LaunchDarkly, and Vanguard and more across a range of industries. This is an exciting time in our trajectory, we’ve closed Series D funding, scaled past the 200-person mark, and were named to Forbes’ America’s Best Startups of 2022 and 2023!    If you want to see what we’ve been up to, please check out these blog posts and Honeycomb.io press releases .    Who We Are We come for the impact, and stay for the culture! We’re a talented, opinionated, passionate, fiercely inclusive, and responsible group of bees. We have conviction and we strive to live  our values  every day. We want our people to do what they truly love amongst a team of highly talented (but humble) peers.   How We Work We are a fully distributed company, which means we...