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For Companies At a Glance
- Tasks: Lead security projects and enhance our cloud and IT infrastructure.
- Company: Join Mattermost, a trusted platform for secure collaboration.
- Benefits: Enjoy competitive salary, equity, and fully remote work flexibility.
- Other info: Open to diverse backgrounds; we value your unique perspective.
- Why this job: Shape security strategy and make a real impact in a global team.
- Qualifications: 3+ years in security engineering and incident response required.
The predicted salary is between 60000 - 80000 £ per year.
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 operations, DevSecOps, incident response, and cyber defence—enabling secure collaboration from tactical edge and DDIL environments to enterprise HQ.
Why Join Mattermost:
- Fully remote, globally distributed team | no commute, genuine flexibility
- Be a key voice in shaping and delivering security strategy
- Competitive salary, equity, and benefits with meaningful work attached
The Role:
As a Senior Security Engineer, you will lead the design and implementation of security tooling, harden our cloud and IT infrastructure, and serve as a key responder to incidents. You will work across a globally distributed team and partner closely with Engineering to manage AI-enabled risk.
Key Responsibilities:
- Lead security and IT projects to enhance the security posture of infrastructure and the company
- Detect, investigate, and remediate security incidents using SIEM, EDR, and SOAR tooling (e.g. CrowdStrike, SentinelOne)
- Conduct threat hunting across cloud and endpoint environments using a Zero Trust framework
- Administer company-wide IAM and security monitoring infrastructure
- Contribute to security policies, incident response, forensics, and endpoint management programmes
- Partner with Engineering to assess and mitigate risks from AI-enabled tools and workflows
- Explore and implement AI/automation in detection, analysis, and response pipelines
- Engage closely with North American and international staff across time zones
Required Background & Skills:
- Bachelor’s degree in Computer Science or a related field, or significant professional security experience
- 3+ years of hands-on experience in security engineering and incident response
- Experience with SIEM platforms and security monitoring systems
- Experience with EDR tools such as CrowdStrike or SentinelOne
- Knowledge of SOAR platforms and automation of security workflows
- Familiarity with Zero Trust architecture principles and threat hunting methodologies
- Experience with cloud security controls across AWS, GCP, and/or Azure
- Strong knowledge of Linux systems and Kubernetes/Docker environments
- Experience with IAM solutions and infrastructure automation
- Practical experience evaluating security implications of AI systems and AI-assisted workflows
- Experience managing security of Microsoft 365 and Google Workspace tenants
- Excellent written and verbal communication skills
Preferred Background & Skills:
- Experience with certification processes: SOC2, ISO 27001, FedRAMP, or Cyber Essentials Plus
- Certifications: OSCP, GCIH, GCFA, or equivalent penetration testing / incident response credentials
- Experience in Go or Python
- Background in open-source communities
- Endpoint security management experience in a fully remote organisation
This role may involve access to information subject to U.S. export control regulations (EAR/ITAR). Applicants should be aware that eligibility requirements may apply. We encourage candidates with questions about this to reach out. Many UK-based security professionals with defence backgrounds will qualify. We are happy to discuss your specific situation.
Mattermost is an EEO Employer, we are a remote-first, open-source company. Mattermost values your unique perspective—we welcome all applicants. We encourage individuals from all backgrounds to apply and are committed to assessing candidates based on their skills and qualifications. We do not tolerate discrimination against staff or applicants based on race, religion, national origin, age, disability, pregnancy status, veteran status, or other personal characteristics. If you require accommodations during the interview process, please let us know—we’re happy to assist.
Senior Security Engineer United Kingdom in London employer: Mattermost, Inc.
Contact Detail:
Mattermost, Inc. Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Security Engineer United Kingdom in London
✨Tip Number 1
Network like a pro! Reach out to folks in the industry, especially those already at Mattermost. A friendly chat can open doors and give you insider info on what they're really looking for.
✨Tip Number 2
Show off your skills in real-time! Consider participating in relevant online forums or communities where you can demonstrate your expertise. This not only builds your profile but also shows your passion for security engineering.
✨Tip Number 3
Prepare for the interview by brushing up on your technical knowledge and incident response strategies. Be ready to discuss specific tools like SIEM and EDR, and how you've used them in past roles.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining the Mattermost team.
We think you need these skills to ace Senior Security Engineer United Kingdom in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV reflects the skills and experiences that Mattermost is looking for. Highlight your security engineering experience, especially with tools like SIEM and EDR, to show us you’re the right fit for the role.
Craft a Compelling Cover Letter: Use your cover letter to tell us why you’re passionate about security and how your background aligns with our mission at Mattermost. Share specific examples of your past work that demonstrate your expertise in incident response and cloud security.
Showcase Your Communication Skills: Since this role involves working with a globally distributed team, it’s crucial to highlight your written communication skills. Make sure your application is clear, concise, and free of jargon—this will help us see how well you can convey complex ideas.
Apply Through Our Website: We encourage you to apply directly through our website. This way, you’ll ensure your application gets to the right people and you’ll have access to all the latest updates about the position and our company.
How to prepare for a job interview at Mattermost, Inc.
✨Know Your Stuff
Make sure you brush up on your knowledge of security engineering and incident response. Familiarise yourself with SIEM platforms, EDR tools like CrowdStrike or SentinelOne, and Zero Trust principles. Being able to discuss these topics confidently will show that you're serious about the role.
✨Showcase Your Experience
Prepare specific examples from your past work that demonstrate your hands-on experience in security projects. Whether it's leading a security initiative or responding to an incident, having concrete stories ready will help you stand out and illustrate your capabilities.
✨Understand the Company Culture
Mattermost values a remote-first, collaborative environment. Research their platform and understand how it supports secure collaboration. Be ready to discuss how you can contribute to their mission and fit into their culture, especially when working across time zones.
✨Ask Insightful Questions
Prepare thoughtful questions about the company's security strategy, the tools they use, and how they handle AI-enabled risks. This not only shows your interest in the role but also gives you a chance to assess if the company aligns with your career goals.