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 lifecycle management
- Privileged Access Management (PAM)
- Security hardening
- Vulnerability remediation

Open Source Technologies

- Sendmail
- PostgreSQL
- OpenSSL

Directory Services

- LDAP
- Enterprise Directory Services

Automation

- Automated patch management
- Operating system updates
- Certificate renewal automation
- Infrastructure automation using scripting tools

Monitoring & Operations

- Infrastructure monitoring tools
- Log analysis
- System auditing
- Performance monitoring
- Root Cause Analysis (RCA)

Preferred Skills

- Experience in enterprise SMTP backbone modernization or migration projects.
- Knowledge of ITIL processes (Incident, Change, Problem Management).
- Experience with enterprise monitoring platforms (e.g., Nagios, Zabbix, Prometheus, Splunk, SolarWinds).
- Exposure to Ansible or similar automation tools.
- Experience working in large-scale enterprise environments.
- Familiarity with cloud-hosted messaging infrastructure is an advantage.

Soft Skills

- Solid analytical and troubleshooting skills.
- Excellent communication and documentation abilities.
- Ability to work independently and collaboratively across cross-functional teams.
- Strong stakeholder management and coordination skills.
- Ability to manage multiple priorities in a fast-paced environment.

Education

- Bachelor's degree in Computer Science, Information Technology, Engineering, or a related discipline.

Preferred Certifications

- Red Hat Certified System Administrator (RHCSA) or RHCE
- Linux Foundation Certification
- ITIL Foundation
- Relevant security or networking certifications are desirable

Pay: ₹15,000.00 - ₹25,000.00 per week

Work Location: In person

📌 Senior Technical Specialist - Smtp Backbone & Unix Infrastructure (Pune)
🏢 Venture Informatrix
📍 Pune