Senior Collaboration Engineer

Position Overview

The NASA IT portfolio with Digital Modernization Sector currently has an opening for a Senior Collaboration Engineer to manage and maintain our Red Hat Enterprise Linux (RHEL) servers and M365 collaboration services as well as support enterprise email services. This role involves responsibility for both M365 and on-premises email infrastructure, including Postfix, Exchange Server SE, Exchange Online, Microsoft Teams, and the M365 Security Suite, ensuring high availability, robust security, and overall system hardening.

This is a telework position; however, the ideal candidate will reside within reasonable commuting distance of a NASA operating center (either Johnson Space Center in Houston, TX or Marshall Space Flight Center in Huntsville, AL). The successful candidate will utilize deep expertise in Linux, email security, and automation to support NASA’s End-User Services and Technologies (NEST) mission – transforming, integrating, and safeguarding NASA IT systems and data while enhancing the end-user experience.

Key Responsibilities

• Email Security & Authentication:
  • Implement and monitor SPF, DKIM, and DMARC policies.
  • Troubleshoot email delivery issues and enforce anti-spoofing measures.
• Linux Server Administration:
  • Manage the full lifecycle of Red Hat servers including installation, configuration, and patching in both production and test environments.
  • Perform security patching, upgrades, and system hardening to meet compliance standards and remediate vulnerabilities.
• Email Infrastructure Management:
  • Configure and maintain Postfix SMTP servers for enterprise email flow.
  • Integrate email services with DNS, LDAP, and TLS for secure delivery.
• Load Balancing & High Availability:
  • Apply knowledge of load balancers and DNS to support email services.
  • Support failover and disaster recovery strategies.
• Monitoring & Troubleshooting:
  • Utilize tools such as Grafana, Nagios, and Zabbix for system and service monitoring.
  • Analyze logs to resolve complex SMTP and network issues.
• Automation & Scripting:
  • Automate routine tasks using Bash, Python, PowerShell, and configuration management tools such as Ansible or Puppet.
  • Maintain accurate documentation of configurations and processes.
• Microsoft 365 Tenant Management:
  • Deliver, support, and enhance M365 services including Exchange Online Protection, retention policies, and litigation holds.
  • Introduce new and modify existing M365 mail flow features to support customer issues across NASA.

Required Qualifications

• Advanced proficiency in Red Hat Enterprise Linux (RHEL 8/9) Bash administration.
• Advanced proficiency in Hybrid Exchange and the M365 collaboration stack.
• Expertise in Postfix SMTP configuration, troubleshooting, and mailflow management.
• Expertise in SPF, DKIM, and DMARC implementation, troubleshooting, and monitoring.
• Familiarity with load balancers (NGINX, HAProxy) and reverse proxy configurations.
• Solid understanding of DNS, TCP/IP, LDAP, and secure email transport (TLS/SSL).
• Proficiency in scripting with Bash, Python, and PowerShell.
• Experience with automation tools such as Ansible or Puppet.
• Knowledge of system monitoring tools and performance tuning.
• Must be a US citizen and able to obtain a Public Trust or possess a current security clearance.
• Education: Bachelor’s degree in Computer Science, Information Technology, or equivalent experience.
• Experience Required: 8-12 years of relevant experience, including SMTP management, command-line Linux system administration, and experience within an enterprise or GCC M365 environment.
• Red Hat certifications (RHCSA, RHCE) are strongly preferred.

Benefits & Perks

• Salary: $92,300.00 - $166,850.00 per year
• Location: Telework with required commute proximity to Houston, TX (Johnson Space Center) or Huntsville, AL (Marshall Space Flight Center)
• Benefits: Competitive compensation, Health and Wellness programs, Income Protection, Paid Leave, and Retirement plans