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Groupon is looking for a Systems Engineer (SRE III) to join the Marketing Engineering team, focused on building and operating reliable, scalable email infrastructure and automation systems. In this role, you will work on email delivery platforms, system infrastructure, and automation pipelines that support large-scale customer communications.
Job Responsibility:
Design, configure, and operate Mail Transfer Agents (MTAs) such as Postfix, Sendmail, or Exim, along with SMTP servers
Build and maintain email notification systems used by multiple services and teams
Develop and manage Infrastructure as Code (IaC) using Terraform and Ansible
Automate system provisioning, configuration, and deployment using CI/CD pipelines, primarily with Jenkins
Ensure high availability, performance, and security of email and system infrastructure
Monitor email delivery and system health to consistently meet a 99.5% SLA
Troubleshoot email delivery issues, including bounces, blocks, throttling, and reputation-related problems
Implement and maintain email security best practices, including DNS, SPF, DKIM, and DMARC
Maintain clear documentation and runbooks for infrastructure and operational processes
Participate in on-call rotations and support incident response when required
Requirements:
Bachelor’s degree in Computer Science, Engineering, or equivalent practical experience
3+ years of hands-on experience in systems engineering, infrastructure, or DevOps roles
Strong experience configuring and operating MTAs and SMTP-based systems
Solid understanding of SMTP, DNS, TLS certificates, and email deliverability best practices
Practical experience with Ansible and Terraform for infrastructure automation
Strong experience with Linux systems and shell scripting
Hands-on experience with CI/CD pipelines, especially Jenkins, for build and deployment workflows
Experience in troubleshooting email delivery, bouncing, blocking, and security-related issues
Experience working with cloud platforms such as AWS, GCP, or Azure, including end-to-end migrations
Good understanding of cloud networking, including VPCs, subnets, routing, BYOIP processes, ARIN IP management, and IP propagation to ISPs
Nice to have:
Experience with cloud-based email services such as KumoMTA, MTA Bird, Amazon SES, SendGrid, or Mailgun
Familiarity with Git-based version control and collaborative workflows
Experience using monitoring and observability tools like Prometheus, Grafana, or Nagios
Exposure to high-volume or large-scale email delivery systems