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Senior Site Reliability Engineer

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Senior Site Reliability Engineer

We are looking for DevOps / Site Reliability Engineers to help us develop the operational aspects of our security software and associated platforms. An ideal candidate will have passion for tackling complex problems with ingenuity, as well as investigating and implementing new ideas to build and scale reliable, high performing software in cloud environments. Prior experience working as a DevOps Engineer or Site Reliability Engineer with multiple teams is required.

Mimecast provides cyber security that helps thousands of organizations worldwide make email and messaging safer, restore trust, and bolster cyber resilience. We help organizations stand strong in the face of cyberattacks, human error, and technical failure.

At Mimecast, Senior DevOps Engineers are responsible for:

  • Deploying, managing, and monitoring software across the full Continuous Delivery lifecycle
  • Building and supporting analysis tools for our cloud-security products
  • Participating in development of new services within the Mimecast platform
  • Supporting and troubleshooting, occasionally outside of regular office hours when needed
  • Working closely with developers to bring an operational perspective to the work of the team, suggesting ways to help the systems scale further, better, and more easily
  • Participating in and driving forward any operational initiatives such as containerization and virtualization technologies
  • Contributing to design/code reviews for product and test code
  • Perform deep dive investigations into systemic and latent reliability issues
  • Drive standardization efforts across multiple disciplines and services in conjunction with embedded SREs throughout the organization
  • Reporting, reproducing, and helping development resolve defects – emphasis on troubleshooting, root cause analysis, and prevention of similar issues in the future
  • Monitoring our results and driving continuous improvement through process changes
  • Mentoring and coaching Software Developers to design software with observability and reliability in mind

Required Skills / Experience:

  • Engineering / Computer science degree or equivalent experience
  • Strong experience in Linux system administration
  • Admin-level familiarity with Linux, including configuration, troubleshooting, and performance tuning / identifying bottlenecks
  • Scripting and automation with Python and Bash
  • Experience operating a hybrid infrastructure that includes cloud-based services and on-premise data-centers
  • Experience administering Java and/or python applications (tuning, GC, memory, etc.)
  • Extensive experience with AWS compute (EC2, Lambda), storage (S3, EFS, Glacier), databases (MySQL/Aurora, RDS, ElastiCache, Dynamo, Neptune), management (Auto Scaling, provisioning, monitoring, and reporting tools), security (IAM, Secrets Manager), and other technologies including Kinesis Data Streams, Route53, Fargate, Cloudfront, load balancers, and AWS Secrets Manager
  • Hands-on experience automating the deployment and monitoring of distributed applications at large scale running in both public and private cloud, including:
    • Configuration management of servers using tools such as Puppet, Chef, or Ansible
    • Infrastructure as Code (IaC) and orchestration tools like Terraform (preferred) and CloudFormation
    • Logging, Monitoring, Alerting technologies like CloudWatch, Humio, Nagios, Prometheus, Grafana, Graphite and similar
    • Solid network understanding of VPC and CIDR blocks
  • Working knowledge of Docker/Kubernetes/Minikube
  • Experience with build and CI/CD pipeline tools like Jenkins (preferred) or Gitlab CI and related technologies (Nexus, static code analysis tools, open-source scans, etc.)
  • Working knowledge of networking and routing in general
  • Basic database knowledge, working knowledge of SQL
  • Solid grasp of object-oriented programming concepts
  • Proven ability to integrate with and automate using third party APIs (e.g., Google, Microsoft, Amazon etc)

Desirable Skills:

  • Experience with Agile Kanban methodology
  • Clear understanding of OWASP Top 10 security vulnerabilities
  • Experience of working as part of a SaaS solution and multi-tenant systems
  • Familiar with multiple cloud vendors (GCP, Azure)
  • Basic understanding of authorization protocols such as OAuth
  • Experience with NGINX, API Management Platforms such as Apigee, Kong and WSO2, and Identity and Access management servers.
  • Prior experience in Distributed Systems Architecture and best practices.
  • Continuous delivery - principles and pragmatics of dealing with build pipelines, artifact repositories, zero-downtime deployment, and modern software development engineering best practices.
  • Experience in migrating and supporting applications on Kubernetes
  • Hands on experience with open-source monitoring and graphing solutions such as Zabbix, Sensu, etc.
  • PostgreSQL database configuration and management of replication.
  • Proving resilience via failure injection (chaos monkey), DR testing, scalability via load and stress testing.

Personal Skills:

  • Passion for development and engineering best practices, automation, and productivity
  • Excellent verbal/written communication and interpersonal skills
  • Presentation skills, communicating with peers and management
  • Highly self-motivated and able to understand tasks on own initiative
  • Highly organized individual with the ability to work under pressure, assimilating information quickly and acting decisively in an environment of changing priorities
  • Experience at working both independently and in a team-oriented, collaborative environment is essential


DEI Statement

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.

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