Senior Security Engineer - SecOps

Mozilla·Remote UKRemotesenior

In short

→Ingeniero de Seguridad Senior especializado en respuesta a incidentes a nivel global
→Gestiona incidentes en tiempo real, lidera equipos y crea playbooks para detección automática
→Destaca por su rol en un entorno no lucrativo con enfoque en privacidad y seguridad abierta

Fluent English required for collaboration across global teams.

In ~1 minute you get: who interviews you, the likely questions answered from your CV, and your CV tailored to this job. Free, no card.

The questions they'll ask you

1. ¿Cómo diseñarías un playbook para responder a un ataque de ransomware en servicios críticos de Mozilla?

🔒 +7 more questions

No card. Upload your resume and the full dossier is ready in ~1 minute.

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💵 USD · Remote · No visa

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What they ask for

✓5+ años de experiencia en incidentes de seguridad a escala global
✓Experiencia en SOC, PSIRT o CSIRT
✓Experto en SIEM (ej. Splunk, Elastic Security)
✓Capacidad para liderar incidentes como comandante
✓Habilidades avanzadas de comunicación y colaboración
✓Disponibilidad para rotación en servicio de guardia (on-call)

Don't tick every box? That's normal — your free dossier shows your gaps and how to cover them in the interview.

SplunkElastic SecuritySIEMPlaybooksAutomated ActionsThreat IntelligenceIncident ResponseThreat HuntingEscalation WorkflowsPost-Mortem Processes

Who should you write to at Mozilla?

Your free dossier identifies the people who'd interview you — their background, what they value, and how to reach out so you stand out before applying.

Why Mozilla? Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission – to make the internet better for people. The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms. About this team and role: Mozilla is looking for an Incident Responder to monitor and mitigate attacks across Mozilla’s products and services. In this position, you will be a part of a flexible team responsible for handling security incidents. As such, you’ll need to have years of practical security experience and knowledge of the state of the art for detecting and responding to attacks. You’ll be someone Mozillians across the company depend on and trust to respond quickly and effectively in a crunch, with the outstanding communication and collaboration skills needed to work in partnership with diverse stakeholders. Most importantly, you will become a critical member of the team responsible for ensuring the integrity of Mozilla’s products and for keeping Mozilla’s users safe, within a company dedicated to building a more secure internet. What you'll do: • Identify and respond to security incidents on a global scale. • Act as an incident commander to drive incidents through the entire response lifecycle. • Design and maintain a portfolio of security alerts, automated actions, playbooks and escalation workflows in support of a high-performing 24/7 incident response capability. • Conduct threat hunting activities, anticipate future threats, and maintain forward-thinking strategies for tools/technology/processes that combat sophisticated threat actors. • Research threat intelligence reports, triage and manage resulting workflows. • Partner with key stakeholders and communicate effectively to maintain a continuously improving feedback loop of preparation, identification, analysis, containment, and post mortem activities. • Participate in on-call rotation. What you'll bring: • 5+ years of demonstrated ability managing security incidents at a global scale and/or experience working in Security Operations Centers (SOC), Product Security Incident Response Teams (PSIRT), and Computer Security Incident Response Teams (CSIRT). • Expertise with security information and event management (SIEM) systems (eg.

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