Senior Linux Engineer: High-Availability & ETL

The Phoenix Group; City of White Plains (NY); Presencial; USD 110.000 - 150.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Health insurance

401(k)

Paid time off

Professional development opportunities

Descripción de la vacante

The Phoenix Group Advisors is seeking a Senior Linux Systems Engineer to manage high-density Linux server infrastructures and support enterprise operations in a fast-paced environment.

You will optimize Ubuntu/RHEL environments, tune web services with Nginx, and harden security across systems while collaborating with development and application teams on integrations and performance issues.

Formación

• Proven hands-on experience managing Ubuntu and RHEL in high-concurrency production environments.
• Strong expertise in Linux system tuning, network configuration, and kernel parameters.
• Proficiency with web server configuration and performance optimization, especially Nginx.
• Experience with Linux security hardening including SELinux, AppArmor, SSH configurations, and firewall management.
• Familiarity with Postfix mail queue management, CUPS printing services, and related hardware/software support.
• Understanding of data ETL pipelines, data replication, and workflows involving SQL Server or similar databases.
• Excellent troubleshooting skills with a logical, analytical approach.

Responsabilidades

• Manage and optimize a mixed fleet of Linux servers (Ubuntu and RHEL), ensuring high availability and performance for thousands of concurrent users and remote sessions.
• Configure, tune, and maintain web server platforms, including Nginx as a reverse proxy and load balancer under peak traffic conditions.
• Monitor and optimize Linux networking components to prevent bottlenecks in high-density session environments.
• Support critical messaging and printing services, including Postfix email queues, enterprise printing solutions (CUPS), and related hardware/software integration.
• Harden Linux systems using security best practices, including SELinux, AppArmor, firewalls, and SSH hardening to minimize security risks.
• Oversee data integration and replication workflows, including monitoring data feeds and maintaining automated ETL processes between Linux environments and SQL Server infrastructure.
• Collaborate with development teams on application support, API integrations, and troubleshooting performance issues related to system resource utilization.
• Diagnose and troubleshoot system and network issues, employing methodical approaches to resolve performance bottlenecks and system irregularities.

Conocimientos

Ubuntu

RHEL

Nginx

Linux tuning

Security hardening

Postfix

CUPS

ETL

SQL Server

Troubleshooting

Herramientas

tcpdump

netstat

ps

top

htop

systemd

Descripción del empleo

The Phoenix Group Advisors is seeking a Senior Linux Systems Engineer to manage high-density Linux server infrastructures and support enterprise operations in a fast-paced environment.

You will optimize Ubuntu/RHEL environments, tune web services with Nginx, and harden security across systems while collaborating with development and application teams on integrations and performance issues.