Senior Network Engineer
About the Company:
Join a passionate and innovative team dedicated to designing, implementing, and supporting robust network infrastructure across Mimecast’s global corporate operations. We’re committed to leveraging cutting-edge networking technologies, automation tools, and best practices to deliver reliable, secure, and high-performance connectivity that enables seamless communications, enhances productivity and provides exceptional user experiences for our worldwide family of Mimecasters.
Role Overview:
As a Senior Network Engineer, you will be responsible for the day-to-day operation, troubleshooting, and continuous improvement of Mimecast’s global corporate network infrastructure. You’ll work with diverse networking platforms including Cisco, Juniper, and Aruba to maintain optimal performance and availability. Collaborating closely with IT, Security, and Workspace teams, you’ll resolve complex network issues, implement strategic upgrades, and leverage automation to enhance operational efficiency across Mimecast worldwide operations.
What You’ll Do:
- Design, build, and maintain network infrastructure across Mimecast’s global office locations, including edge routing, enterprise switching, and wireless systems to support hybrid workforce connectivity.
- Monitor, troubleshoot, and resolve complex network issues affecting LAN, WAN, SD-WAN, SASE, and wireless services, ensuring optimal performance and minimal downtime for both on-site and remote users.
- Configure and maintain out-of-band management infrastructure to ensure administrative access and recovery capabilities across all network devices globally.
- Collaborate with Security teams to implement and maintain network security policies, access controls, and segmentation strategies that protect corporate assets and user data.
- Partner with Workspace and IT teams to ensure network infrastructure supports collaboration platforms, productivity tools, and hybrid work technologies seamlessly.
- Develop and maintain comprehensive network documentation, including topology diagrams, configuration standards, runbooks, and change management procedures.
- Lead network upgrade projects and technology refresh initiatives, evaluating new solutions and implementing strategic improvements to enhance performance and scalability.
- Leverage automation tools and scripting to streamline network operations, reduce manual tasks, and improve configuration consistency across multi-vendor environments.
- Participate in on-call operations to provide 24/7 network support for critical incidents affecting Mimecast’s global workforce.
- Engage with business stakeholders and end users to understand Mimecast’s evolving business needs and continuously enhance the digital user experience.
What You’ll Bring:
- A wealth of experience with enterprise network engineering experience with demonstrated expertise in designing, implementing, and supporting large-scale network infrastructure
- Extensive hands-on experience with Juniper platforms including Mist, EX switches, and SRX firewalls, including configuration, troubleshooting and optimization.
- Strong proficiency with Cisco Meraki solutions for network management, including cloud-managed switching, wireless, and security appliances.
- Proven experience deploying and managing Aruba wireless infrastructure in enterprise environments with multiple sites and diverse user populations.
- Working knowledge of Opengear or similar out-of-band management platforms for remote device access and network recovery.
- Experience with SASE (Secure Access Service Edge) and ZTNA (Zero Trust Network Access) solutions supporting secure hybrid cloud and remote workforce connectivity.
- Comprehensive enterprise wireless planning expertise including RF site surveys, heat mapping, interference analysis, capacity optimization, and adapting to evolving wireless spectrum standards (Wi-Fi 6/6E/7)
- Strong understanding of network protocols including BGP, OSPF, spanning tree, VLANs, VPN technologies, and QoS implementations.
- Experience with network automation and scripting using tools such as Python, Ansible, or similar technologies to streamline operations and ensure consistency.
- Bachelor’s degree in Computer Science, Information Technology, or related field, or equivalent practical experience. Preferred industry certifications such as CCNP, CCIE, JNCP, etc.
- Exceptional communication, interpersonal, and collaboration skills with a focus on delivering outstanding user experiences.
- Based in the London, UK office working in a hybrid environment, with flexibility for occasional on-call support and travel requirements.
What We Bring:
Join our Network team to accelerate your career journey, working with cutting-edge technologies and contributing to projects that have real customer impact. You will be immersed in a dynamic environment that recognizes and celebrates your achievements.
Mimecast offers formal and on the job learning opportunities, maintains a comprehensive benefits package that helps our employees and their family members to sustain a healthy lifestyle, and importantly - working in cross functional teams to build your knowledge!
Our Hybrid Model:
We provide you with the flexibility to live balanced, healthy lives through our hybrid working model that champions both collaborative teamwork and individual flexibility. Employees are expected to come to the office at least two days per week, because working together in person:
- Fosters a culture of collaboration, communication, performance and learning.
- Drives innovation and creativity within and between teams.
- Introduces employees to priorities outside of their immediate realm.
- Ensures important interpersonal relationships and connections with one another and our community!
The base salary range for this position is £64,000−£96,000 plus benefits. This range represents the minimum and maximum new hire compensation for this role. The position may also be eligible for incentive plans and additional benefits, in accordance with company policy and local regulations. Our salary ranges are determined by role, level, and location with individual compensation also dependent on factors such as qualifications, experience, and skills. Final offers will reflect these considerations and may vary accordingly.
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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.
