Software Engineer II

Help Build the Backbone of Cybersecurity and the future of Human Risk Management

Mimecast is a global leader in cybersecurity dedicated to protecting organisations and individuals from an ever-evolving threat landscape. Our mission is to deliver scalable secure and resilient solutions that empower our customers to operate with confidence. Beyond technical defences we are pioneers in addressing human risktackling the most unpredictable element of cybersecurity by equipping people to be a critical line of defence through intelligent awareness behaviour change and proactive prevention.

Were looking for a Mid-Level Java Engineer to join our Core Database team. This is not your typical backend role. Youll help architect and build Java applications that operate at petabyte scale enabling powerful performant backend APIs and data processing workflows across PostgreSQL databases. These systems underpin Mimecasts advanced cybersecurity and human risk management platforms.

Being part of the Core Database team has given me the opportunity to solve meaningful problems at massive scale. Its rewarding to be part of an organisation stopping bad things from happening to good organisations. Mark A. Java Engineer

This role is perfect for engineers passionate about backend systems operating at huge scale. Its an exciting chance to work with petabyte-scale databases and drive innovation in one of the most crucial parts of our infrastructure. Brian Campbell Vice President of Core Platform

Why Join

Were building the backbone of Mimecasts global infrastructuresystems that directly power how we combat evolving cyber threats and manage human risk. This isnt just a jobits a chance to solve challenges at scale grow your technical depth and be surrounded by people who genuinely care about their craft and each other. If youre looking for a place to stretch your skills and make a real impact this is it.

What Youll Do

• Engineer the Backbone: Design build and evolve high-performance Java applications that power critical backend services and interact with petabyte-scale PostgreSQL databases.
• Innovate with Intent: Develop robust libraries and applications using a combination of proprietary frameworks Spring Boot and Micronauthelping to standardize engineering excellence across teams.
• Champion Performance & Security: Tune systems for scalability and resilience ensuring that every line of code contributes to secure reliable and responsive services in alignment with Mimecasts cybersecurity standards.
• Drive Ecosystem Integration: Evaluate and implement tools that complement the Java/PostgreSQL stack enabling observability automation and operational efficiency at scale.
• Be a Technical Steward: Lead by example in documentation code reviews and troubleshootingempowering teams across Mimecast with reusable patterns clear processes and proactive problem-solving.

What Youll Bring

• Technical Excellence: At least 3 years experience with Java and modern frameworks like Spring Boot or Micronaut
• Data Fluency: Strong understanding of PostgreSQL including database design optimization and performance tuning at scale.
• Architectural Awareness: Familiarity with RESTful APIs microservices CI/CD pipelines and distributed systemsplus an appreciation for designing systems that last.
• Security Mindset: Awareness of secure coding practices and the fundamentals of cybersecurity with a drive to build resilient trustworthy software.
• Collaboration: You thrive in a team-first culture where sharing knowledge giving thoughtful feedback and solving complex problems together is the norm.
• Curiosity & Drive: A growth mindset with a willingness to learn adapt and engage with both technology and people to create lasting impact.

What We Bring

At Mimecast we dont just build cybersecurity solutionswe build careers. Youll be part of a culture that celebrates curiosity creativity and continuous learning. Our engineering teams thrive in a collaborative environment where knowledge sharing is second nature and where your voice matters. We offer competitive compensation including an extensive package of benefits covering health wellness and professional development. But just as important we provide purpose: your work will directly help protect people and organisations from real-world threatsespecially those stemming from human risk. Join us and youll find mentorship challenge support and the freedom to make meaningful impact every day.

Career Growth Opportunities

This role is a launchpad. Whether your ambition lies in platform scalability cybersecurity innovation or people leadership well help you get there. Youll gain exposure to cutting-edge technologies and high-scale systems while working alongside domain experts who are invested in your development. We support upskilling certifications and lateral mobility ensuring you have the runway to define your own growth pathat your own pace on your own terms.

Managers Working Style & Teams Purpose

Youll be joining a team thats deeply focused on impact quality and integrity. Our leadership values transparency autonomy and frequent feedbackencouraging engineers to speak up try new things and learn through action. Expect daily interactions with peers and stakeholders regular design discussions and a rhythm of experimentation backed by best practices. This team is the backbone of Mimecasts data layerwere entrusted with building the secure scalable systems that every other product

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DEI Statement

Cybersecurity is a community effort. Thats why were committed to building an inclusive diverse community that celebrates and welcomes everyone unless theyre a cybercriminal of course.

Were proud to be an Equal Opportunity and Affirmative Action Employer and wed 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 wont 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.