Linux Application Engineer

Clearance Level
Systems Engineering
Remote, Working from the USA
Key Skills For Success

Apache HTTP Server

Certificate Management


Red Hat Enterprise Linux (RHEL)


REQ#: RQ170740
Public Trust: NACLC (T3)
Requisition Type: Regular
Your Impact

Own your opportunity to work alongside federal civilian agencies. Make an impact by providing services that help the government ensure the well being of U.S. citizens.

Job Description

GDIT is seeking a Linux Application Engineer to support the National Institute of Allergy and Infectious Diseases (NIAID).  This position is on the Applications Hosting team in the Operations and Engineering Branch. The Branch is responsible for the organization’s infrastructure.

We are looking for a creative, customer-focused individual to provide exceptional service in supporting critical scientific research and clinical operations. The ideal candidate enjoys working on a team and will find the challenges and opportunities provided by a fast paced customer oriented environment satisfying.  If you want to work with a dynamic group of dedicated, technical professionals on a collaborative team that supports a life-saving mission of global importance, we encourage you to apply. 

Work Visa sponsorship will not be provided for this role.


  • Configuring and supporting daily application management tasks, such as troubleshooting issues, deploying changes, installing and configuring new custom and third-party applications, remediating application security vulnerabilities, and optimizing performance settings
  • Monitoring the health of applications and responding to alerts, such as service down, failed backup, slow response time, and full file systems
  • Working closely with application owners and software engineers to identify requirements
  • Planning and implementing projects, such as installing new custom applications with web services, database components, data hosting, load balancing, and advanced web application firewall (AWAF)
  • Automating daily processes and creating self-service capabilities to empower software developers and application owners to perform routine maintenance tasks, such as renewing TLS certificates, changing service account passwords, and rebooting application servers
  • Researching and recommending innovative approaches for application hosting to modernize our customers hosting environment and speed up delivery times
  • Documenting daily administrative processes and configuration information about our customers applications


* Education: Bachelor's degree (or equivalent)

* Required Experience:  Minimum of five years’ hands-on experience with Linux/Unix variants, especially RedHat/RHEL version 7.x/8.x/9.x and its derivatives, including best practices for deploying LAMP (Linux, Apache, MySQL, PHP) applications and supporting variants of LAMP such as Tomcat, Java, Python, MariaDB, and PostgreSQL.

* Required Technical Skills:

  • Expert knowledge of Red Hat Enterprise Linux 7.x/8.x & 9.x to include troubleshooting complex issues, configuration best practices, security hardening, and automated provisioning.
  • Experience in managing hardware load balanced applications
  • Experience in creating, applying and troubleshooting TLS certificates for web servers such as Tomcat, Apache, or nginx
  • Experience with Puppet configuration management system and writing Puppet manifests or equivalent experience with Ansible or Chef
  • Experience installing, configuring, maintaining, and troubleshooting MySQL, MariaDB, and Postgres databases

*Required Skills and Abilities:

  • Experience designing and implementing technologies following NIST standards, such as SP 800-53, SP 800-190, and SP 500-291
  • Strong scripting experience with Python, Bash, Java, or Ruby
  • Experience developing and implementing continuous integration and continuous deployment (CI/CD) pipelines to deploy infrastructure and applications using tools such as GoCD, Jenkins, Azure DevOps, or GitHub Actions
  • Experience breaking down monolithic applications into microservices and Docker containers

*Preferred Qualifications:

  • Experience with access and authentication technologies, such as LDAP, SimpleSAML, or Kerberos
  • Experience managing EC2 instances, containers, applications deployment and troubleshooting on AWS
  • Knowledge of layer 3 networking technologies, such as switching and routing
  • Knowledge of enterprise storage protocols, such as NFS v4, CIFS, and SMB
  • Experience with content management and learning frameworks such as Drupal 7.x & 8.x or Moodle on Red Hat Enterprise Linux

*Security Clearance Level: Must be able to obtain a NIH Public Trust

*Location:  Remote 


● 401K with company match
● Comprehensive health and wellness packages
● Internal mobility team dedicated to helping you own your career
● Professional growth opportunities including paid education and certifications
● Cutting-edge technology you can learn from
● Rest and recharge with paid vacation and holidays



Work Requirements
Years of Experience

5 + years of related experience

* may vary based on technical training, certification(s), or degree


Travel Required


Salary and Benefit Information

The likely salary range for this position is $84,000 - $126,000. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.
View information about benefits and our total rewards program.

About Our Work

We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 30 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.

GDIT is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.