Mimecast is a leading cybersecurity company that secures Human, Data and AI, protecting organizations across the people who work for them, the data they rely on, and the AI systems now woven through how they operate. With over 42,000 customers worldwide, we analyse more than 18 billion security events daily to stop attacks before they cause harm.
Our business is to secure Human, Data and AI. People remain both an organization's greatest asset and its most targeted point of attack, the data they create and depend on needs protecting wherever it moves, and the AI systems now embedded in daily work introduce a new surface that has to be defended. Our platform combines advanced threat detection, awareness training, and Incydr data protection to reduce the likelihood and impact of security incidents across all three.
Mimecast is an AI-First engineering organization. Our teams actively leverage AI-powered development tools across all facets of engineering, from code development to testing, documentation, and operations. We are looking for leaders who don't just use AI tools but champion their adoption and establish new ways of working.
Our AI leadership extends beyond how we build to what we build. Our Mihra AI agent delivers 7x faster threat response for customers, and we're recognized as "Agents of Change" in cybersecurity. Engineers here work at the intersection of cutting-edge AI tooling and AI-powered security products that protect organizations worldwide.
This is a pivotal leadership role owning Mimecast's largest product engineering pillar. Email & Collaboration Threat Protection protects organizations from the most prevalent attack vector in cybersecurity: email. Our products detect and block phishing, malware, business email compromise, and advanced persistent threats before they reach users.
You will lead approximately 140 engineers globally, across multiple product lines including Secure Email Gateway, API Based Protection for Microsoft 365 and Google Workspace, MTA infrastructure, DMARC authentication services, and Mimecast's core Threat Detection Capabilities and Threat Research teams (including AI/ML teams).
Threat detection is a core Mimecast capability that sits within this pillar. It is used most heavily by Email & Collaboration and also supports other product areas, so you will lead it as a shared capability and collaborate closely across pillars to keep priorities aligned. Your Threat Research teams keep Mimecast ahead of how attackers evolve, including the detection of AI-powered threats such as prompt injection, agent abuse, and deepfakes.
You will drive a significant transformation agenda including migrating our platform to AWS with a strong focus on FinOps, cost of goods sold (COGS), and overall cost optimisation. As we move to the public cloud, cost to serve and capacity planning are essential. You will also accelerate AI adoption across engineering practices, modernise legacy systems, and build the next generation of engineering leadership. Our MTA platform processes billions of emails daily; you'll ensure this critical infrastructure evolves while maintaining the reliability our customers depend on.
We operate with a sense of urgency. Cyber threats don't wait, and neither do we. You'll lead teams that move fast, make decisions with conviction, and deliver results. We expect leaders who thrive in this environment and instil the same urgency across their organizations.
Experience and Technical Depth
Cloud, FinOps and Platform Transformation
AI Fluency (Required)
Leadership and Mindset
This role is based in London with a minimum of two days per week in the office. You will lead teams distributed globally across London, Bangalore, and the US and Canada, requiring flexibility to collaborate across time zones. Travel to team locations is expected several times per year.
We offer an attractive compensation package for the right candidate, including base salary, performance bonus, and equity participation.
This is an opportunity to own a critical pillar at scale, leading the defence against the most prevalent attack vector in cybersecurity. You'll work with real, large-scale data, processing billions of messages daily and protecting tens of thousands of organizations globally.
You'll drive genuine transformation. The cloud migration, AI adoption, and platform modernization represent meaty technical and organizational challenges for a leader who wants to build.
We're fast-paced and results-driven. If you thrive on impact, accountability, and making things happen, you'll find Mimecast energising.
Mimecast offers formal and on-the-job learning opportunities, maintains a comprehensive benefits package, and fosters a culture that celebrates achievement. We believe in growth that's good, a culture that cares, and a mission that matters.
The base salary range for this position is £148,000 - £222,000 base + benefits. This reflects the minimum and maximum target for new hire salaries for this position. This position may also be eligible for incentive plans and other related benefits. Our salary ranges are determined by role, level, and location. These factors and individual capabilities will also determine the individual pay offered.
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Belonging at Mimecast
Cybersecurity is a community effort. That’s why we’re committed to building an inclusive, diverse community that celebrates and welcomes everyone – unless they’re a cybercriminal, of course.
We’re proud to be an Equal Opportunity and Affirmative Action Employer, and we’d encourage you to join us whatever your background. We particularly welcome applicants from traditionally underrepresented groups.
We consider everyone equally: your race, age, religion, sexual orientation, gender identity, ability, marital status, nationality, or any other protected characteristic won’t affect your application.
Due to certain obligations to our customers, an offer of employment will be subject to your successful completion of applicable background checks, conducted in accordance with local law.
It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment.
Human Risk, Secured
Mimecast is transforming the way businesses manage and secure human risk. Its AI-powered, API-enabled connected human risk platform is purpose-built to protect organizations from the spectrum of cyber threats. Integrating cutting-edge technology with human-centric pathways, our platform enhances visibility and provides strategic insight. Our technology safeguards critical data and actively engages employees in reducing risk and enhancing productivity. More than 42,000 businesses worldwide trust Mimecast to help them keep ahead of the ever-evolving threat landscape. From insider risk to external threats, customers get more with Mimecast. More visibility. More agility. More control. More security.
For help, please email support@mimecast.com.
