Senior Unix/Linux Admin

Parsons Corporation

2d•Remote

About The Position

This job opening is for an experienced Unix/Linux Administrator to provide systems and middleware support services. The ideal candidate will be responsible for managing and maintaining Unix-based systems and leveraging AWS services to ensure high availability, scalability, and security of our infrastructure. Remote role preferred candidate to be located on East Coast.

Requirements

Bachelor's degree in Computer Science, Information Technology, or a related field.
Minimum of 5 years of experience as a Unix/Linux System Administrator.
Strong knowledge of Unix/Linux operating systems (e.g., Red Hat, CentOS, Ubuntu, Solaris).
Working experience with email delivery (postfix, exim, DKIM, SPF, DMARC) and middleware (Tomcat, WebSphere Application Server, Oracle Application Server, Pentaho, Actuate).
Hands-on experience with AWS services and cloud architecture.
Experience with infrastructure as code (IaC) tools (e.g., CloudFormation, Terraform).
Proficiency in scripting languages such as Bash, or Python.
Experience with configuration management tools (e.g., Ansible, Puppet, Chef).
Understanding of networking concepts and protocols.
Excellent problem-solving skills and attention to detail.
Strong communication and teamwork abilities.

Nice To Haves

Familiarity with containerization technologies (e.g., Docker, Kubernetes, AWS ECS/EKS, Fargate) is a plus.
Knowledge of database management systems (e.g., MySQL, PostgreSQL, Oracle).
Experience with monitoring and logging tools (e.g., CloudWatch, Grafana, Loki).

Responsibilities

Install, configure, and maintain Unix/Linux operating systems (e.g., Red Hat, CentOS, Amazon Linux, Ubuntu, Solaris).
Assist with installation, configuration, and maintenance of middleware applications (e.g., WebSphere Application Server, Tomcat, Oracle Application Server)
Perform system patching, upgrades, and performance tuning.
Manage user accounts, permissions, and security.
Troubleshoot and resolve hardware and software issues.
Implement, maintain and test backup and recovery procedures.
Monitor system performance and availability.
Deploy, manage, and maintain Unix/Linux instances in AWS (EC2).
Configure and manage AWS services such as VPC, IAM, S3, RDS, and CloudWatch.
Implement and maintain infrastructure as code (IaC) using tools like CloudFormation or Terraform.
Automate deployment and configuration tasks using scripting languages (e.g., Bash, Python).
Monitor AWS resources and optimize costs.
Implement and maintain AWS security best practices.
Develop and maintain scripts for system administration and automation tasks.
Utilize configuration management tools (e.g., Ansible) to automate system configuration.
Implement CI/CD pipelines for application deployments.
Provide technical support to developers and other teams.
Diagnose and resolve complex system and application issues.
Participate in afterhours systems and middleware deployments
Participate in weekly on-call rotation.
Create and maintain documentation for system configurations, procedures, and troubleshooting guides.