Job Description: Senior Technical Specialist - SMTP Backbone & Unix Infrastructure

Experience

10-15+ Years

Job Summary

Key Responsibilities
- Participate in the SMTP Backbone Modernization program, including planning, migration, implementation, and operational support.
- Design, implement, and administer SMTP relay infrastructure on Red Hat Enterprise Linux (RHEL).
- Perform Unix/Linux server administration, including installation, configuration, hardening, patching, and lifecycle management.
- Automate operating system patching, software updates, and certificate renewals using scripting and automation tools.
- Manage SSL/TLS certificates using OpenSSL and ensure secure SMTP communication.
- Troubleshoot network connectivity, firewall policies, DNS resolution, and SMTP-related issues.
- Configure and maintain monitoring solutions for SMTP services, operating systems, and infrastructure components.
- Perform log analysis, system auditing, root cause analysis (RCA), and performance tuning.
- Manage user authentication and directory integrations using LDAP and enterprise directory services.




- Support Privileged Access Management (PAM) solutions and ensure compliance with organizational security policies.
- Develop operational documentation, standard operating procedures (SOPs), and technical knowledge articles.
- Ensure infrastructure complies with enterprise security, governance, and audit requirements.

Required Technical Skills

Messaging & SMTP
- SMTP architecture and protocols
- SMTP Relay administration
- Sendmail administration
- Mail queue management
- SMTP security (TLS, SSL)

Unix/Linux Administration
- Red Hat Enterprise Linux (RHEL)
- Linux/Unix system administration
- Shell scripting (Bash)
- System performance tuning
- User and group management
- File system management

Infrastructure & Networking
- TCP/IP
- DNS
- Firewall concepts
- Network troubleshooting
- Load balancing concepts
- High Availability (HA)

Security
- OpenSSL
- SSL/TLS certificate li

📌 Senior Technical Specialist (Pune)
🏢 Venture Informatrix
📍 Pune