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For Companies At a Glance
- Tasks: Lead security projects, enhance infrastructure security, and respond to incidents.
- Company: Mattermost, a leading secure collaboration platform trusted by global organisations.
- Benefits: Fully remote work, competitive salary, equity, and meaningful benefits.
- Other info: Join a diverse team and enjoy genuine flexibility in your work.
- Why this job: Shape security strategy and make a real impact in a dynamic environment.
- Qualifications: 3+ years in security engineering, experience with SIEM and EDR tools.
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 New United Kingdom employer: Mattermost, Inc.
Contact Detail:
Mattermost, Inc. Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Security Engineer New United Kingdom
✨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 it’s really like working there.
✨Tip Number 2
Prepare for the interview by brushing up on your technical skills and security knowledge. Be ready to discuss real-world scenarios and how you’d tackle them—show us you’re the problem-solver we need!
✨Tip Number 3
Don’t just focus on your experience; highlight your passion for security and collaboration. Share examples of how you’ve contributed to team success and improved security measures in past roles.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you’re genuinely interested in being part of the Mattermost team.
We think you need these skills to ace Senior Security Engineer New United Kingdom
Some tips for your application 🫡
Tailor Your CV: Make sure your CV is tailored to the Senior Security Engineer role. Highlight your relevant experience with security engineering, incident response, and any specific tools mentioned in the job description. We want to see how your skills align with what we're looking for!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about security and how your background makes you a great fit for Mattermost. Don’t forget to mention any experience with AI-enabled tools or cloud security, as these are key for us.
Showcase Your Communication Skills: Since excellent written communication is crucial for this role, make sure your application is clear and concise. Use proper grammar and structure, and don’t hesitate to show off your personality a bit—after all, we’re looking for someone who can engage with our globally distributed team!
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it gives you a chance to explore more about our company culture and values!
How to prepare for a job interview at Mattermost, Inc.
✨Know Your Stuff
Make sure you brush up on your knowledge of security engineering, incident response, and the specific tools mentioned in the job description, like SIEM and EDR platforms. Familiarity with Zero Trust principles and cloud security controls is a must, so be ready to discuss how you've applied these in your previous roles.
✨Showcase Your Experience
Prepare to share specific examples from your past work that demonstrate your hands-on experience with security projects. Highlight any incidents you've managed, tools you've implemented, or policies you've contributed to. This will show that you can hit the ground running in this role.
✨Communicate Clearly
Since you'll be working with a globally distributed team, strong communication skills are essential. Practice explaining complex security concepts in simple terms, as you may need to collaborate with non-technical colleagues. Clear communication can set you apart from other candidates.
✨Ask Insightful Questions
Prepare thoughtful questions about Mattermost's security strategy, team dynamics, and how they handle AI-enabled risks. This not only shows your interest in the role but also helps you gauge if the company culture aligns with your values and work style.