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Senior Unix Systems Administrator

Saicon Consultants Inc

San Jose, CA

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JOB DETAILS
SKILLS
Access Control, Applications Security, Authentication, Automation, Best Practices, Build Management, CentOS, Computer Engineering, Computer Science, Computer Security, Configuration Management, Cryptography, DNS (Domain Name System), Digital Certificates, Directory Server Software, Electronic Engineering, Enterprise Directory Services, Hardware Installation, Hybrid Cloud, Identify Issues, Identity Data Management, Installation Guide, Kerberos, LDAP (Lightweight Directory Access Protocol), Linux Administration, Linux Operating System, OpenLDAP, Operations Processes, Oracle Solaris (fka Sun Microsystems Solaris), Performance Analysis, Performance Tuning/Optimization, Perl Programming Language, Production Support, Production Systems, Public Key Infrastructure (PKI), Python Programming/Scripting Language, Red Hat Linux Operating System, Root Cause Analysis, Single Sign-On (SSO), Software Engineering, Software Patches, System Migration, Systems Administration/Management, Technical Writing, Ubuntu, Unix Operating Systems, Unix Shell Programming, Unix System Administration
LOCATION
San Jose, CA
POSTED
5 days ago
Job Description:
We are seeking a Senior Unix LDAP Engineer with 10+ years of experience supporting secure LDAP environments within large-scale enterprise infrastructures. This individual will be responsible for administering and securing LDAP/LDAPS environments, managing Unix/Linux systems, supporting DNS services, and leading server lifecycle activities including builds, upgrades, patching, migrations, and troubleshooting.
The ideal candidate will possess strong infrastructure engineering expertise, a security-first mindset, and experience supporting mission-critical production environments.

Key Responsibilities
• Administer and maintain LDAP/LDAPS directory services in enterprise environments
• Configure, secure, and troubleshoot LDAP authentication and directory integrations
• Manage Unix/Linux server environments including builds, installations, upgrades, and patching
• Perform server migrations and infrastructure modernization initiatives
• Administer and support DNS infrastructure and related services
• Implement system hardening, access controls, and security best practices
• Monitor system performance, availability, and reliability across infrastructure environments
• Troubleshoot complex system, authentication, and connectivity issues
• Develop and maintain technical documentation, operational procedures, and standards
• Collaborate with infrastructure, security, and application teams on enterprise initiatives
• Support production incidents, root cause analysis, and remediation efforts

Required Qualifications
• Bachelor's degree in Computer Engineering, Electronics Engineering, Computer Science, or related field from a reputed institution
• 10+ years of hands-on experience with Unix/Linux system administration
• Strong experience administering LDAP and Secure LDAP (LDAPS) environments
• Experience with DNS server administration and troubleshooting
• Expertise with server builds, installations, upgrades, patching, and migrations
• Strong troubleshooting and performance tuning skills
• Knowledge of system security, authentication, and access management concepts
• Experience working in enterprise-scale production environments

Preferred Qualifications
• Experience with OpenLDAP, 389 Directory Server, or similar LDAP platforms
• Knowledge of Kerberos, PAM, SSO, MFA, or Identity & Access Management solutions
• Experience with Red Hat Enterprise Linux (RHEL), CentOS, Ubuntu, or Solaris
• Scripting experience with Shell, Python, or Perl
• Familiarity with automation and configuration management tools
• Exposure to cloud or hybrid infrastructure environments
• Understanding of PKI, certificates, and encryption technologies

Technical Skills
• LDAP / LDAPS
• Unix / Linux Administration
• DNS Administration
• Server Builds & Patching
• System Upgrades & Migration
• Infrastructure Security
• Troubleshooting & Performance Tuning
• Shell Scripting
• Authentication & Access Management

About the Company

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Saicon Consultants Inc