Location: Navi Mumbai (on-site initially, remote-support capable)
Role Summary: We're looking for a skilled Infrastructure & SMTP Server Specialist who can fully set up, manage, and secure a high-volume email delivery infrastructure from scratch, including SMTP servers, IP pools with rotation, domain authentication, DNS management, and remote-access configuration. This role requires deep expertise in email server technologies, network architecture, and cybersecurity best practices.
Key Responsibilities:
- Plan, deploy, and manage a robust, high-volume SMTP infrastructure on bare-metal servers.
- Configure IP pools, perform IP warming, and implement dynamic IP rotation strategies for optimal deliverability.
- Set up and manage domain authentication processes (SPF, DKIM, DMARC).
- Ensure DNS propagation, domain latching, and seamless customer domain integrations.
- Configure and manage load balancers (HAProxy/Nginx).
- Implement and manage queue systems (Redis/RabbitMQ/Kafka) for email throughput.
- Collaborate closely with developers to integrate backend logic and database systems.
- Implement security best practices, ensuring infrastructure security, data protection, and regulatory compliance (GDPR/CCPA).
- Set up comprehensive monitoring, alerting, and logging systems (Prometheus, Grafana, ELK stack).
- Configure remote access (VPN, SSH) securely, allowing remote administration from international locations (e.g., UAE).
- Document configurations, architectures, and operational procedures clearly and thoroughly.
Qualifications & Experience:
- 5+ years experience in managing SMTP servers, email deliverability, IP rotation, and DNS management.
- Strong hands-on experience with Postfix, Exim, PowerMTA, or similar SMTP software.
- Proven experience managing load balancers (HAProxy/Nginx).
- Proficiency with DNS configuration and management, including SPF, DKIM, DMARC.
- Demonstrable experience with security implementations (firewalls, SSL/TLS, VPNs).
- Experience with queue management solutions (Redis/RabbitMQ/Kafka).
- Solid knowledge of Linux systems administration.
- Familiarity with monitoring and logging tools (ELK, Prometheus, Grafana).
- Excellent problem-solving and troubleshooting skills.
- Strong communication and documentation skills.
Preferred:
- Previous experience working with email marketing platforms or high-volume email-sending services.
- Understanding of backend programming languages and databases (Node.js, Python, Java, Go, PostgreSQL/MySQL).
Availability:
- Immediate availability is preferred.
Work Mode:
- On-site (Navi Mumbai) for initial setup and occasional maintenance, otherwise capable of remote support and administration.
Compensation:
- Competitive remuneration, based on skills and experience.
